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@article{ WOS:000697954900001,
Author = {Visschers, Jim C. and Budker, Dmitry and Bougas, Lykourgos},
Title = {{Rapid parameter estimation of discrete decaying signals using
autoencoder networks}},
Journal = {{MACHINE LEARNING-SCIENCE AND TECHNOLOGY}},
Year = {{2021}},
Volume = {{2}},
Number = {{4}},
Month = {{DEC}},
Abstract = {{In this work we demonstrate the use of neural networks for rapid
extraction of signal parameters of discretely sampled signals. In
particular, we use dense autoencoder networks to extract the parameters
of interest from exponentially decaying signals and decaying
oscillations. By using a three-stage training method and careful choice
of the neural network size, we are able to retrieve the relevant signal
parameters directly from the latent space of the autoencoder network at
significantly improved rates compared to traditional algorithmic
signal-analysis approaches. We show that the achievable precision and
accuracy of this method of analysis is similar to conventional
algorithm-based signal analysis methods, by demonstrating that the
extracted signal parameters are approaching their fundamental parameter
estimation limit as provided by the Cramer-Rao bound. Furthermore, we
demonstrate that autoencoder networks are able to achieve signal
analysis, and, hence, parameter extraction, at rates of 75 kHz,
orders-of-magnitude faster than conventional techniques with similar
precision. Finally, our exploration of the limitations of our approach
in different computational systems suggests that analysis rates of >200
kHz are feasible using neural networks in systems where the transfer
time between the data-acquisition system and data-analysis modules can
be kept below similar to 3 mu s.}},
Publisher = {{IOP Publishing Ltd}},
Address = {{TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Visschers, JC; Bougas, L (Corresponding Author), Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.
Visschers, JC; Bougas, L (Corresponding Author), GSI Helmholtzzentrum Schwerionenforsch GmbH, Helmholtz Inst Mainz, D-55128 Mainz, Germany.
Visschers, Jim C.; Budker, Dmitry; Bougas, Lykourgos, Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.
Visschers, Jim C.; Budker, Dmitry; Bougas, Lykourgos, GSI Helmholtzzentrum Schwerionenforsch GmbH, Helmholtz Inst Mainz, D-55128 Mainz, Germany.
Budker, Dmitry, Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.}},
DOI = {{10.1088/2632-2153/ac1eea}},
Article-Number = {{045024}},
EISSN = {{2632-2153}},
Keywords = {{signal processing; data analysis; statistics and probability; machine
learning; parameter estimation}},
Keywords-Plus = {{RING-DOWN SPECTROSCOPY; CAVITY-RING; EVANESCENT-WAVE; POLARIMETRY CRDP;
CLASSIFICATION; ENHANCEMENT; FREQUENCY; TIME}},
Research-Areas = {{Computer Science; Science \& Technology - Other Topics}},
Web-of-Science-Categories = {{Computer Science, Artificial Intelligence; Computer Science,
Interdisciplinary Applications; Multidisciplinary Sciences}},
Author-Email = {{[email protected]
ORCID-Numbers = {{Bougas, Lykourgos/0000-0002-8050-1141}},
Funding-Acknowledgement = {{European Commission Horizon 2020, Project ULTRACHIRAL {[}FETOPEN-737071]}},
Funding-Text = {{J C V and L B are grateful to Christian Schmitt and Michael Everest for
their help and support and specially thank Sharon van Etten for
insightful discussions. This work was supported by the European
Commission Horizon 2020, Project ULTRACHIRAL (Grant No. FETOPEN-737071).}},
Number-of-Cited-References = {{57}},
Times-Cited = {{0}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{2}},
Journal-ISO = {{Mach. Learn.-Sci. Technol.}},
Doc-Delivery-Number = {{UT2MJ}},
Unique-ID = {{WOS:000697954900001}},
OA = {{gold, Green Submitted}},
DA = {{2021-12-22}},
}
@article{ WOS:000695619200042,
Author = {Tran, Dang-Bao-An and Peverall, Robert and Rosson, Sarah and Manfred,
Katherine M. and Ritchie, Grant A. D.},
Title = {{High performance continuous-wave laser cavity enhanced polarimetry using
RF-induced linewidth broadening}},
Journal = {{OPTICS EXPRESS}},
Year = {{2021}},
Volume = {{29}},
Number = {{19}},
Pages = {{30114-30122}},
Month = {{SEP 13}},
Abstract = {{We present precise optical rotation measurements of gaseous chiral
samples using near-IR continuous-wave cavity-enhanced polarimetry.
Optical rotation is determined by comparing cavity ring-down signals for
two counter-propagating beams of orthogonal polarisation which are
subject to polarisation rotation by the presence of both an optically
active sample and a magneto-optic crystal. A broadband RF noise source
applied to the laser drive current is used to tune the laser linewidth
and optimise the polarimeter, and this noise-induced laser linewidth is
quantified using self-heterodyne beat-note detection. We demonstrate the
optical rotation measurement of gas phase samples of enantiomers of
alpha-pinene and limonene with an optimum detection precision of 10 mu
deg per cavity pass and an uncertainty in the specific rotation of
similar to 0.1 deg dm(-1) (g/ml)(-1) and determine the specific rotation
parameters at 730 nm, for (+)- and (-)-alpha-pinene to be 32.10 +/- 0.13
and -32.21 +/- 0.11 deg dm(-1) (g/ml)(-1), respectively. Measurements of
both a pure R-(+)-limonene sample and a non-racemic mixture of limonene
of unknown enantiomeric excess are also presented, illustrating the
utility of the technique. (C) 2021 Optical Society of America under the
terms of the OSA Open Access Publishing Agreement}},
Publisher = {{OPTICAL SOC AMER}},
Address = {{2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Tran, DBA (Corresponding Author), Univ Oxford, Dept Chem, Phys \& Theoret Chem Lab, South Parks Rd, Oxford OX1 3QZ, England.
Tran, DBA (Corresponding Author), Ho Chi Minh City Univ Educ, Dept Phys, Ho Chi Minh City, Vietnam.
Tran, Dang-Bao-An; Peverall, Robert; Rosson, Sarah; Manfred, Katherine M.; Ritchie, Grant A. D., Univ Oxford, Dept Chem, Phys \& Theoret Chem Lab, South Parks Rd, Oxford OX1 3QZ, England.
Tran, Dang-Bao-An, Ho Chi Minh City Univ Educ, Dept Phys, Ho Chi Minh City, Vietnam.
Manfred, Katherine M., Univ York, Dept Chem, Wolfson Atmospher Chem Labs, York YO10 5DD, N Yorkshire, England.}},
DOI = {{10.1364/OE.435006}},
ISSN = {{1094-4087}},
Keywords-Plus = {{CHIRAL MOLECULES; OPTICAL-ACTIVITY}},
Research-Areas = {{Optics}},
Web-of-Science-Categories = {{Optics}},
Author-Email = {{[email protected]
ORCID-Numbers = {{Peverall, Robert/0000-0003-2326-2495}},
Funding-Acknowledgement = {{European CommissionEuropean CommissionEuropean Commission Joint Research
Centre; Horizon 2020 Framework Programme {[}FETOPEN-737071]}},
Funding-Text = {{European Commission; Horizon 2020 Framework Programme (FETOPEN-737071).}},
Number-of-Cited-References = {{20}},
Times-Cited = {{0}},
Usage-Count-Last-180-days = {{3}},
Usage-Count-Since-2013 = {{3}},
Journal-ISO = {{Opt. Express}},
Doc-Delivery-Number = {{UP8JC}},
Unique-ID = {{WOS:000695619200042}},
OA = {{gold, Green Accepted}},
DA = {{2021-12-22}},
}
@article{ WOS:000692200200026,
Author = {Droulias, Sotiris},
Title = {{Enhanced chiral sensing using achiral metasurfaces with gain}},
Journal = {{JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS}},
Year = {{2021}},
Volume = {{38}},
Number = {{9}},
Pages = {{C210-C216}},
Month = {{SEP 1}},
Abstract = {{The inherent weak nature of chiroptical signals provided by typical
polarimetric measurements of natural optically active media has led to
the development of different techniques to achieve enhanced chiral
sensing. Intuitively, the introduction of gain could provide the desired
enhancement; however, this requires gain media that can couple directly
to the chiral medium. Here, it is shown that nanophotonic systems that
generate collinear electric and magnetic dipole moments can mediate the
coupling between the gain and chiral medium, leading to signals stronger
than those achieved by the chiral medium alone or when combined with the
same nanophotonic system without gain. Depending on how strongly gain
couples with the nanophotonic system, both background amplification and
loss compensation are possible. In this context, it also is shown that
the enhancement occurs within the regime of loss compensation, because
background amplification may also result in amplified transmitted
fields, but does not guarantee the enhancement of chiroptical signals.
(C) 2021 Optical Society of America}},
Publisher = {{OPTICAL SOC AMER}},
Address = {{2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Droulias, S (Corresponding Author), FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Crete, Greece.
Droulias, S (Corresponding Author), Univ Crete, Dept Mat Sci \& Technol, Iraklion 70013, Greece.
Droulias, Sotiris, FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Crete, Greece.
Droulias, Sotiris, Univ Crete, Dept Mat Sci \& Technol, Iraklion 70013, Greece.}},
DOI = {{10.1364/JOSAB.430588}},
ISSN = {{0740-3224}},
EISSN = {{1520-8540}},
Keywords-Plus = {{AMPLIFICATION; WAVE}},
Research-Areas = {{Optics}},
Web-of-Science-Categories = {{Optics}},
Author-Email = {{[email protected]}},
ORCID-Numbers = {{Droulias, Sotiris/0000-0002-2404-2649}},
Funding-Acknowledgement = {{Horizon 2020 Framework Programme {[}FETOPEN-737071]}},
Funding-Text = {{Horizon 2020 Framework Programme (FETOPEN-737071)}},
Number-of-Cited-References = {{31}},
Times-Cited = {{0}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{1}},
Journal-ISO = {{J. Opt. Soc. Am. B-Opt. Phys.}},
Doc-Delivery-Number = {{UK8FM}},
Unique-ID = {{WOS:000692200200026}},
DA = {{2021-12-22}},
}
@article{ WOS:000684135400003,
Author = {Droulias, Sotiris and Bougas, Lykourgos},
Title = {{Chiral sensing with achiral anisotropic metasurfaces}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2021}},
Volume = {{104}},
Number = {{7}},
Month = {{AUG 9}},
Abstract = {{We present a theoretical analysis for chiral sensing using achiral
anisotropic metasurfaces. We derive analytically, and verify
numerically, simple formulas that provide insight into the sensing
mechanism and explain how anisotropic metasurfaces offer additional
degrees of freedom with respect to their isotropic counterparts. We
demonstrate how to deconvolve the unknown chirality from the background
dispersion of the metasurface, and we propose practical measurement
schemes for its unambiguous determination. Last, we discuss the key
functionalities and benefits of anisotropic metasurfaces, and we provide
the design principles towards broadband operation-from near-infrared to
near-ultraviolet frequencies-opening the way for highly sensitive
nanoscale chiroptical spectroscopy. Our numerical examples are focused
on ametasurface design that we recently proposed, which belongs to the
wider class of achiral anisotropic metasurfaces.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Droulias, S (Corresponding Author), FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Greece.
Droulias, S (Corresponding Author), Univ Crete, Dept Mat Sci \& Technol, Iraklion 70013, Greece.
Droulias, Sotiris, FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Greece.
Droulias, Sotiris, Univ Crete, Dept Mat Sci \& Technol, Iraklion 70013, Greece.
Bougas, Lykourgos, Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.}},
DOI = {{10.1103/PhysRevB.104.075412}},
Article-Number = {{075412}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{CIRCULAR-DICHROISM; NANOPHOTONIC PLATFORMS; SPECTROSCOPY; FIELDS;
AMPLIFICATION; ENHANCEMENT; WAVE}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter}},
Author-Email = {{[email protected]
ORCID-Numbers = {{Droulias, Sotiris/0000-0002-2404-2649
Bougas, Lykourgos/0000-0002-8050-1141}},
Funding-Acknowledgement = {{European Commission Horizon 2020 ULTRACHIRAL Project {[}FETOPEN-737071]}},
Funding-Text = {{We acknowledge the support of the European Commission Horizon 2020
ULTRACHIRAL Project (Grant No. FETOPEN-737071).}},
Number-of-Cited-References = {{45}},
Times-Cited = {{1}},
Usage-Count-Last-180-days = {{11}},
Usage-Count-Since-2013 = {{11}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{TY9ZD}},
Unique-ID = {{WOS:000684135400003}},
OA = {{Green Submitted}},
DA = {{2021-12-22}},
}
@article{ WOS:000664306400041,
Author = {Droulias, Sotiris and Soukoulis, Costas M. and Koschny, Thomas},
Title = {{Effects of Coherent versus Incoherent Illumination and Imaging Setup on
Experimental Measurements of Scattering Amplitudes in Metamaterials}},
Journal = {{ACS PHOTONICS}},
Year = {{2021}},
Volume = {{8}},
Number = {{6}},
Pages = {{1856-1862}},
Month = {{JUN 16}},
Abstract = {{The characterization of metamaterials typically depends on the
determination of scattering parameters like transmittance and
reflectance, and comparison with numerical models. While, numerically,
coherent plane wave scattering amplitudes for infinite perfectly
periodic samples are readily accessible, experimental measurements
necessarily involve scattering of possibly incoherent optical probes
with finite-size illumination spots on finite sample surfaces that need
to serve as a proxy for the true plane wave scattering amplitudes. In
some situations, but not always, this difference can lead to
substantially different observed scattering spectra. Here, we
investigate and analyze the observable effects on the measured
scattering spectra originating from coherent versus incoherent optical
probes, finite illumination spot size, magnifying imaging systems, as
well as beam shaping optical elements. We discuss the relation of all
the above to the wave vector content of the illumination and the
sample's spatial dispersion properties, and we show that they can result
in qualitatively significant deviations of observed scattering spectra
from true plane wave scattering, which needs to be taken into account to
really understand experiments and allow a faithful comparison with
simulations.}},
Publisher = {{AMER CHEMICAL SOC}},
Address = {{1155 16TH ST, NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Droulias, S (Corresponding Author), FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Crete, Greece.
Droulias, Sotiris; Soukoulis, Costas M., FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Crete, Greece.
Soukoulis, Costas M.; Koschny, Thomas, Iowa State Univ, Dept Phys \& Astron, Ames, IA 50011 USA.
Koschny, Thomas, Iowa State Univ, Ames Lab, Ames, IA 50011 USA.}},
DOI = {{10.1021/acsphotonics.1c00599}},
ISSN = {{2330-4022}},
Keywords = {{metamaterials; metasurfaces; incoherent illumination; characterization;
imaging system}},
Keywords-Plus = {{DISCRETE-DIPOLE APPROXIMATION; MAGNETIC RESPONSE; FABRICATION}},
Research-Areas = {{Science \& Technology - Other Topics; Materials Science; Optics; Physics}},
Web-of-Science-Categories = {{Nanoscience \& Nanotechnology; Materials Science, Multidisciplinary;
Optics; Physics, Applied; Physics, Condensed Matter}},
Author-Email = {{[email protected]}},
ORCID-Numbers = {{Droulias, Sotiris/0000-0002-2404-2649}},
Funding-Acknowledgement = {{Department of Energy (Basic Energy Sciences, Division of Materials
Sciences and Engineering)United States Department of Energy (DOE)
{[}DE-AC02-07CH11358]; European Commission Horizon 2020, Project
ULTRACHIRAL {[}FETOPEN-737071]}},
Funding-Text = {{Work at Ames Laboratory was supported by the Department of Energy (Basic
Energy Sciences, Division of Materials Sciences and Engineering) under
Contract No. DE-AC02-07CH11358. Work at FORTH was supported by the
European Commission Horizon 2020, Project ULTRACHIRAL (Grant No.
FETOPEN-737071).}},
Number-of-Cited-References = {{38}},
Times-Cited = {{0}},
Usage-Count-Last-180-days = {{3}},
Usage-Count-Since-2013 = {{3}},
Journal-ISO = {{ACS Photonics}},
Doc-Delivery-Number = {{SW1UP}},
Unique-ID = {{WOS:000664306400041}},
DA = {{2021-12-22}},
}
@article{ WOS:000659178700002,
Author = {Jahani, Yasaman and Arvelo, Eduardo R. and Yesilkoy, Filiz and Koshelev,
Kirill and Cianciaruso, Chiara and De Palma, Michele and Kivshar, Yuri
and Altug, Hatice},
Title = {{Imaging-based spectrometer-less optofluidic biosensors based on
dielectric metasurfaces for detecting extracellular vesicles}},
Journal = {{NATURE COMMUNICATIONS}},
Year = {{2021}},
Volume = {{12}},
Number = {{1}},
Month = {{MAY 31}},
Abstract = {{Biosensors are indispensable tools for public, global, and personalized
healthcare as they provide tests that can be used from early disease
detection and treatment monitoring to preventing pandemics. We introduce
single-wavelength imaging biosensors capable of reconstructing spectral
shift information induced by biomarkers dynamically using an advanced
data processing technique based on an optimal linear estimator. Our
method achieves superior sensitivity without wavelength scanning or
spectroscopy instruments. We engineered diatomic dielectric metasurfaces
supporting bound states in the continuum that allows high-quality
resonances with accessible near-fields by in-plane symmetry breaking.
The large-area metasurface chips are configured as microarrays and
integrated with microfluidics on an imaging platform for real-time
detection of breast cancer extracellular vesicles encompassing exosomes.
The optofluidic system has high sensing performance with nearly 70 1/RIU
figure-of-merit enabling detection of on average 0.41 nanoparticle/mu
m(2) and real-time measurements of extracellular vesicles binding from
down to 204 femtomolar solutions. Our biosensors provide the robustness
of spectrometric approaches while substituting complex instrumentation
with a single-wavelength light source and a
complementary-metal-oxide-semiconductor camera, paving the way toward
miniaturized devices for point-of-care diagnostics. The authors engineer
a type of bound states in the continuum in diatomic dielectric
metasurfaces, allowing for high-quality resonances with accessible
enhanced fields. Metasurface microarrays are integrated with
microfluidics on an imaging platform for real-time detection of
biosamples, based on reconstructing spectral shift information.}},
Publisher = {{NATURE RESEARCH}},
Address = {{HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Altug, H (Corresponding Author), Ecole Polytech Fed Lausanne EPFL, Inst Bioengn, Lausanne, Switzerland.
Jahani, Yasaman; Arvelo, Eduardo R.; Altug, Hatice, Ecole Polytech Fed Lausanne EPFL, Inst Bioengn, Lausanne, Switzerland.
Yesilkoy, Filiz, Univ Wisconsin, Dept Biomed Engn, Madison, WI USA.
Koshelev, Kirill; Kivshar, Yuri, Australian Natl Univ, Res Sch Phys, Nonlinear Phys Ctr, Canberra, ACT, Australia.
Koshelev, Kirill, ITMO Univ, Sch Phys \& Engn, St Petersburg, Russia.
Cianciaruso, Chiara; De Palma, Michele, Ecole Polytech Fed Lausanne EPFL, Sch Life Sci, Swiss Inst Expt Canc Res ISREC, Lausanne, Switzerland.}},
DOI = {{10.1038/s41467-021-23257-y}},
Article-Number = {{3246}},
ISSN = {{2041-1723}},
Keywords-Plus = {{LABEL-FREE DETECTION; OPTICS; EXOSOMES; ARRAYS}},
Research-Areas = {{Science \& Technology - Other Topics}},
Web-of-Science-Categories = {{Multidisciplinary Sciences}},
Author-Email = {{[email protected]}},
ResearcherID-Numbers = {{Koshelev, Kirill/K-1514-2015
}},
ORCID-Numbers = {{Koshelev, Kirill/0000-0001-7475-1024
Cianciaruso, Chiara/0000-0002-5635-5404
Jahani, Yasaman/0000-0003-2345-2264}},
Funding-Acknowledgement = {{European Union Horizon 2020 Framework Programme for Research and
Innovation {[}FETOPEN-737071, 777714]; European Research CouncilEuropean
Research Council (ERC)European Commission {[}682167, 725051]; Australian
Research CouncilAustralian Research Council {[}DP210101292]; Strategic
Fund of the Australian National University; Russian Foundation for Basic
ResearchRussian Foundation for Basic Research (RFBR) {[}19-02-00419]}},
Funding-Text = {{The authors thank T. Andrejic and S. Taghishokrgozar for assistance in
preparing the sensor chips, E'cole Polytechnique Fe'de'rale de Lausanne,
and Center of MicroNano Technology (CMi) for nanofabrication. We also
acknowledge funding from the European Union Horizon 2020 Framework
Programme for Research and Innovation under Grant Agreements
No.FETOPEN-737071 (ULTRA-CHIRAL Project) and no. 777714 (NOCTURNO
project), the European Research Council under grants agreement no.
682167 (VIBRANT-BIO) and no. 725051 (EVOLVE), the Australian Research
Council (the grant DP210101292), the Strategic Fund of the Australian
National University, and the Russian Foundation for Basic Research
(19-02-00419). K. Koshelev thanks the Advancement of Theoretical Physics
and Mathematics ``BASIS{''}.}},
Number-of-Cited-References = {{57}},
Times-Cited = {{6}},
Usage-Count-Last-180-days = {{42}},
Usage-Count-Since-2013 = {{47}},
Journal-ISO = {{Nat. Commun.}},
Doc-Delivery-Number = {{SO7TR}},
Unique-ID = {{WOS:000659178700002}},
OA = {{Green Published, gold}},
DA = {{2021-12-22}},
}
@article{ WOS:000644720900002,
Author = {Pfannerstill, Eva Y. and Reijrink, Nina G. and Edtbauer, Achim and
Ringsdorf, Akima and Zannoni, Nora and Araujo, Alessandro and Ditas,
Florian and Holanda, Bruna A. and Sa, Marta O. and Tsokankunku, Anywhere
and Walter, David and Wolff, Stefan and Lavric, V, Jost and Poehlker,
Christopher and Soergel, Matthias and Williams, Jonathan},
Title = {{Total OH reactivity over the Amazon rainforest: variability with
temperature, wind, rain, altitude, time of day, season, and an overall
budget closure}},
Journal = {{ATMOSPHERIC CHEMISTRY AND PHYSICS}},
Year = {{2021}},
Volume = {{21}},
Number = {{8}},
Pages = {{6231-6256}},
Month = {{APR 26}},
Abstract = {{The tropical forests are Earth's largest source of biogenic volatile
organic compounds (BVOCs) and thus also the largest atmospheric sink
region for the hydroxyl radical (OH). However, the OH sink above
tropical forests is poorly understood, as past studies have revealed
large unattributed fractions of total OH reactivity. We present the
first total OH reactivity and volatile organic compound (VOC)
measurements made at the Amazon Tall Tower Observatory (ATTO) at 80,
150, and 320 m above ground level, covering two dry seasons, one wet
season, and one transition season in 2018-2019. By considering a wide
range of previously unaccounted for VOCs, which we identified by proton
transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the
unattributed fraction was with an overall average of 19\% within the
measurement uncertainty of similar to 35 \%. In terms of seasonal
average OH reactivity, isoprene accounted for 23 \%-43\% of the total
and oxygenated VOCs (OVOCs) for 22 \%-40 \%, while monoterpenes,
sesquiterpenes, and green leaf volatiles combined were responsible for 9
\%-14 \%. These findings show that OVOCs were until now an
underestimated contributor to the OH sink above the Amazon forest.
By day, total OH reactivity decreased towards higher altitudes with
strongest vertical gradients observed around noon during the dry season
(-0.026 s(-1) m(-1)), while the gradient was inverted at night. Seasonal
differences in total OH reactivity were observed, with the lowest
daytime average and standard deviation of 19.9 +/- 6.2 s(-1) during a
wet-dry transition season with frequent precipitation; 23.7 +/- 6.5
s(-1) during the wet season; and the highest average OH reactivities
during two dry-season observation periods with 28.1 +/- 7.9 s(-1) and
29.1 +/- 10.8 s(-1), respectively. The effects of different
environmental parameters on the OH sink were investigated, and
quantified, where possible. Precipitation caused short-term spikes in
total OH reactivity, which were followed by below-normal OH reactivity
for several hours. Biomass burning increased total OH reactivity by 2.7
to 9.5 s(-1). We present a temperature-dependent parameterization of OH
reactivity that could be applied in future models of the OH sink to
further reduce our knowledge gaps in tropical-forest OH chemistry.}},
Publisher = {{COPERNICUS GESELLSCHAFT MBH}},
Address = {{BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Pfannerstill, EY (Corresponding Author), Max Planck Inst Chem, Atmospher Chem \& Multiphase Chem Dept, D-55128 Mainz, Germany.
Pfannerstill, EY (Corresponding Author), Univ Calif Berkeley, Dept Environm Sci Policy \& Management, Berkeley, CA 94720 USA.
Pfannerstill, Eva Y.; Reijrink, Nina G.; Edtbauer, Achim; Ringsdorf, Akima; Zannoni, Nora; Ditas, Florian; Holanda, Bruna A.; Tsokankunku, Anywhere; Walter, David; Wolff, Stefan; Poehlker, Christopher; Soergel, Matthias; Williams, Jonathan, Max Planck Inst Chem, Atmospher Chem \& Multiphase Chem Dept, D-55128 Mainz, Germany.
Reijrink, Nina G., IMT Lille Douai, Dept Sci Atmosphere \& Genie Environm SAGE, F-59508 Douai, France.
Araujo, Alessandro, Empresa Brasileira Pesquisa Agr Embrapa Amazonia, BR-66095100 Belem, Para, Brazil.
Sa, Marta O., Inst Nacl Pesquisas Amazonia INPA, BR-69067375 Manaus, Amazonas, Brazil.
Lavric, Jost, V, Max Planck Inst Biogeochem, Biogeochem Proc Dept, D-07745 Jena, Germany.
Williams, Jonathan, Cyprus Inst, Energy Environm \& Water Res Ctr, CY-1645 Nicosia, Cyprus.
Pfannerstill, Eva Y., Univ Calif Berkeley, Dept Environm Sci Policy \& Management, Berkeley, CA 94720 USA.
Ditas, Florian, Hess Landesamt Nat Schutz Umwelt \& Geol, D-65203 Wiesbaden, Germany.}},
DOI = {{10.5194/acp-21-6231-2021}},
ISSN = {{1680-7316}},
EISSN = {{1680-7324}},
Keywords-Plus = {{VOLATILE ORGANIC-COMPOUNDS; SPECTROMETRY PTR-MS; TRACE GASES; ISOPRENE
PHOTOOXIDATION; MONOTERPENE FLUXES; LEAF PHENOLOGY; VOC EMISSIONS;
AMBIENT AIR; AEROSOL; BIOMASS}},
Research-Areas = {{Environmental Sciences \& Ecology; Meteorology \& Atmospheric Sciences}},
Web-of-Science-Categories = {{Environmental Sciences; Meteorology \& Atmospheric Sciences}},
Author-Email = {{[email protected]}},
ResearcherID-Numbers = {{Lavric, Jost/H-4487-2011
Pfannerstill, Eva Y./AAT-9500-2021
}},
ORCID-Numbers = {{Lavric, Jost/0000-0003-3610-9078
Pfannerstill, Eva Y./0000-0001-7715-1200
Edtbauer, Achim/0000-0001-8824-2132
Zannoni, Nora/0000-0003-2721-5362}},
Funding-Acknowledgement = {{German Federal Ministry of Education and Research (BMBF)Federal Ministry
of Education \& Research (BMBF) {[}01LB1001A, 01LK1602A, 01LK1602B];
Brazilian Ministerio da Ciencia, Tecnologia e Inovacoes (MCTI/FINEP)
{[}01.11.01248.00]; Amazonas State University (UEA); FAPESPFundacao de
Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); CNPqConselho Nacional
de Desenvolvimento Cientifico e Tecnologico (CNPQ); FAPEAM; LBA/INPA;
SDS/CEUC/RDS Uatuma; European Commission Horizon 2020 UltraChiral
project {[}FETOPEN-737071]}},
Funding-Text = {{This research has been supported by the German Federal Ministry of
Education and Research (BMBF contracts 01LB1001A, 01LK1602A, and
01LK1602B) and the Brazilian Ministerio da Ciencia, Tecnologia e
Inovacoes (MCTI/FINEP contract 01.11.01248.00). Further support was
provided by the Amazonas State University (UEA), FAPESP, CNPq, FAPEAM,
LBA/INPA, and SDS/CEUC/RDS Uatuma. Nora Zannoni was supported by the
European Commission Horizon 2020 (grant no. FETOPEN-737071) UltraChiral
project.}},
Number-of-Cited-References = {{124}},
Times-Cited = {{1}},
Usage-Count-Last-180-days = {{3}},
Usage-Count-Since-2013 = {{5}},
Journal-ISO = {{Atmos. Chem. Phys.}},
Doc-Delivery-Number = {{RT8QQ}},
Unique-ID = {{WOS:000644720900002}},
OA = {{gold, Green Submitted}},
DA = {{2021-12-22}},
}
@article{ WOS:000640033600095,
Author = {Kakkanattu, Aneeth and Eerqing, Narima and Ghamari, Shahin and Vollmer,
Frank},
Title = {{Review of optical sensing and manipulation of chiral molecules and
nanostructures with the focus on plasmonic enhancements {[}Invited]}},
Journal = {{OPTICS EXPRESS}},
Year = {{2021}},
Volume = {{29}},
Number = {{8}},
Pages = {{12543-12579}},
Month = {{APR 12}},
Abstract = {{Chiral molecules are ubiquitous in nature; many important synthetic
chemicals and drugs are chiral. Detecting chiral molecules and
separating the enantiomers is difficult because their physiochemical
properties can be very similar. Here we review the optical approaches
that are emerging for detecting and manipulating chiral molecules and
chiral nanostructures. Our review focuses on the methods that have used
plasmonics to enhance the chiroptical response. We also review the
fabrication and assembly of (dynamic) chiral plasmonic nanosystems in
this context. Published by The Optical Society under the terms of the
Creative Commons Attribution 4.0 License.}},
Publisher = {{OPTICAL SOC AMER}},
Address = {{2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA}},
Type = {{Review}},
Language = {{English}},
Affiliation = {{Vollmer, F (Corresponding Author), Univ Exeter, Living Syst Inst, Phys \& Astron, Exeter EX4 4QD, Devon, England.
Kakkanattu, Aneeth; Eerqing, Narima; Ghamari, Shahin; Vollmer, Frank, Univ Exeter, Living Syst Inst, Phys \& Astron, Exeter EX4 4QD, Devon, England.}},
DOI = {{10.1364/OE.421839}},
ISSN = {{1094-4087}},
Keywords-Plus = {{CIRCULAR-DICHROISM; DNA-ORIGAMI; GOLD NANOPARTICLES; CHIROPLASMONIC
ASSEMBLIES; ULTRASENSITIVE DETECTION; RAMAN; PROTEIN; RESONANCE;
NANOTECHNOLOGY; ENANTIOMERS}},
Research-Areas = {{Optics}},
Web-of-Science-Categories = {{Optics}},
Author-Email = {{[email protected]}},
ORCID-Numbers = {{eerqing, narima/0000-0001-6238-7528}},
Funding-Acknowledgement = {{University of Exeter; EPSRC Centre for Doctoral Training (CDT) in
Metamaterials (XM2)UK Research \& Innovation (UKRI)Engineering \&
Physical Sciences Research Council (EPSRC); Engineering and Physical
Sciences Research CouncilUK Research \& Innovation (UKRI)Engineering \&
Physical Sciences Research Council (EPSRC) {[}EP/R031428/1]; European
Research Council under an H2020-FET open grant (ULTRACHIRAL) {[}737071];
Royal Society (Wolfson Research Merit Award)Royal Society of London}},
Funding-Text = {{The authors acknowledge funding from the University of Exeter, the EPSRC
Centre for Doctoral Training (CDT) in Metamaterials (XM2), the
Engineering and Physical Sciences Research Council (Ref. EP/R031428/1),
and from the European Research Council under an H2020-FET open grant
(ULTRACHIRAL, ID: 737071), as well as funding from The Royal Society
(Wolfson Research Merit Award to FV). The authors thank Gillian
Fearnyough for proofreading the manuscript.}},
Number-of-Cited-References = {{196}},
Times-Cited = {{1}},
Usage-Count-Last-180-days = {{17}},
Usage-Count-Since-2013 = {{22}},
Journal-ISO = {{Opt. Express}},
Doc-Delivery-Number = {{RN0GI}},
Unique-ID = {{WOS:000640033600095}},
OA = {{gold}},
DA = {{2021-12-22}},
}
@article{ WOS:000638986400009,
Author = {Tran, Dang-Bao-An and Manfred, Katherine M. and Peverall, Robert and
Ritchie, Grant A. D.},
Title = {{Continuous-Wave Cavity-Enhanced Polarimetry for Optical Rotation
Measurement of Chiral Molecules}},
Journal = {{ANALYTICAL CHEMISTRY}},
Year = {{2021}},
Volume = {{93}},
Number = {{13}},
Pages = {{5403-5411}},
Month = {{APR 6}},
Abstract = {{Precise optical rotation measurements play an important role in the
analysis of chiral molecules in various fields, especially in biological
chemistry and pharmacology. In this paper, we demonstrate a new variant
of continuous-wave cavity-enhanced polarimetry for detecting the optical
activity of two enantiomers of a chiral molecule at 730 nm. It is based
on a signal-reversing technique for which the chiral specific rotation
is directly determined by the cavity ring-down signal from two
counter-propagating beams in a bow-tie cavity. In particular, we ensure
reproducible excitation of both modes by broadening the linewidth of a
diode laser source by application of a radio frequency perturbation to
its injection current. The performance of the polarimeter is
demonstrated for the specific rotation of (+)- and (-)-alpha-pinene in
different environments, including the pure vapor, open air, and the
liquid phase; the detection precision ranges between 10(-5) and 10(-4)
degrees per cavity pass depending on the environment. The apparatus is a
robust and practical tool for quantifying chirality and can be developed
for the entire visible and near-infrared spectral regions.}},
Publisher = {{AMER CHEMICAL SOC}},
Address = {{1155 16TH ST, NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Tran, DBA; Ritchie, GAD (Corresponding Author), Univ Oxford, Dept Chem, Phys \& Theoret Chem Lab, Oxford OX1 3QZ, England.
Tran, Dang-Bao-An; Manfred, Katherine M.; Peverall, Robert; Ritchie, Grant A. D., Univ Oxford, Dept Chem, Phys \& Theoret Chem Lab, Oxford OX1 3QZ, England.}},
DOI = {{10.1021/acs.analchem.0c04651}},
ISSN = {{0003-2700}},
EISSN = {{1520-6882}},
Research-Areas = {{Chemistry}},
Web-of-Science-Categories = {{Chemistry, Analytical}},
Author-Email = {{[email protected]
ORCID-Numbers = {{Peverall, Robert/0000-0003-2326-2495}},
Funding-Acknowledgement = {{European Commission Horizon 2020, ULTRACHIRAL Project (FETOPEN)
{[}737071]}},
Funding-Text = {{This work was funded by the European Commission Horizon 2020,
ULTRACHIRAL Project (grant no. FETOPEN, ID number 737071). The authors
would like to thank Prof. Gus Hancock for valuable comments. D.-B.-A.T.
would like to thank Dr. Benoit Darquie for his discussion of the
experimental setup.}},
Number-of-Cited-References = {{35}},
Times-Cited = {{1}},
Usage-Count-Last-180-days = {{9}},
Usage-Count-Since-2013 = {{20}},
Journal-ISO = {{Anal. Chem.}},
Doc-Delivery-Number = {{RL5AR}},
Unique-ID = {{WOS:000638986400009}},
DA = {{2021-12-22}},
}
@article{ WOS:000624968100045,
Author = {Visschers, Jim C. and Wilson, Emma and Conneely, Thomas and Mudrov,
Andrey and Bougas, Lykourgos},
Title = {{Rapid parameter determination of discrete damped sinusoidal oscillations}},
Journal = {{OPTICS EXPRESS}},
Year = {{2021}},
Volume = {{29}},
Number = {{5}},
Pages = {{6863-6878}},
Month = {{MAR 1}},
Abstract = {{We present different computational approaches for the rapid extraction
of the signal parameters of discretely sampled damped sinusoidal
signals. We compare time- and frequency-domain-based computational
approaches in terms of their accuracy and precision and computational
time required in estimating the frequencies of such signals, and observe
a general trade-off between precision and speed. Our motivation is
precise and rapid analysis of damped sinusoidal signals as these become
relevant in view of the recent experimental developments in
cavity-enhanced polarimetry and ellipsometry, where the relevant time
scales and frequencies are typically within the similar to 1 - 10 mu s
and similar to 1 - 100 MHz ranges, respectively. In such experimental
efforts, single-shot analysis with high accuracy and precision becomes
important when developing experiments that study dynamical effects
and/or when developing portable instrumentations. Our results suggest
that online, running-fashion, microsecond-resolved analysis of
polarimetric/ellipsometric measurements with fractional uncertainties at
the 10(-6) levels, is possible, and using a proof-of-principle
experimental demonstration we show that using a frequency-based analysis
approach we can monitor and analyze signals at kHz rates and accurately
detect signal changes at microsecond time-scales. Published by The
Optical Society under the terms of the Creative Commons Attribution 4.0
License.}},
Publisher = {{OPTICAL SOC AMER}},
Address = {{2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Bougas, L (Corresponding Author), Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.
Visschers, Jim C.; Bougas, Lykourgos, Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.
Wilson, Emma; Mudrov, Andrey, Univ Leicester, Dept Math, Leicester LE1 7RH, Leics, England.
Wilson, Emma; Conneely, Thomas, Photek Ltd, St Leonards On Sea TN38 9NS, E Sussex, England.}},
DOI = {{10.1364/OE.411972}},
ISSN = {{1094-4087}},
Keywords-Plus = {{DOWN POLARIMETRY CRDP; CAVITY-RING; EVANESCENT-WAVE; SPECTROSCOPY;
FREQUENCY; ALGORITHM; SCHEME}},
Research-Areas = {{Optics}},
Web-of-Science-Categories = {{Optics}},
Author-Email = {{[email protected]}},
ORCID-Numbers = {{Wilson, Emma/0000-0003-2695-9853
Bougas, Lykourgos/0000-0002-8050-1141}},
Funding-Acknowledgement = {{Horizon 2020 Framework Programme {[}FETOPEN-737071]; Seventh Framework
Programme (EPOCHSE) {[}189]; Innovate UKUK Research \& Innovation
(UKRI)Innovate UK {[}KTP 010819]}},
Funding-Text = {{Horizon 2020 Framework Programme (FETOPEN-737071); Seventh Framework
Programme (EPOCHSE (no. 189)); Innovate UK (KTP 010819).}},
Number-of-Cited-References = {{47}},
Times-Cited = {{2}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{4}},
Journal-ISO = {{Opt. Express}},
Doc-Delivery-Number = {{QR1HP}},
Unique-ID = {{WOS:000624968100045}},
OA = {{Green Submitted, gold}},
DA = {{2021-12-22}},
}
@article{ WOS:000612567900005,
Author = {Tseng, Ming Lun and Jahani, Asaman and Leitis, Aleksandrs and Altug,
Hatice},
Title = {{Dielectric Metasurfaces Enabling Advanced Optical Biosensors}},
Journal = {{ACS PHOTONICS}},
Year = {{2021}},
Volume = {{8}},
Number = {{1}},
Pages = {{47-60}},
Month = {{JAN 20}},
Abstract = {{Dielectric metasurfaces have emerged as a powerful platform for novel
optical biosensors. Due to their low optical loss and strong
light-matter interaction, they demonstrate several exotic optical
properties, including sharp resonances, strong nearfield enhancements,
and the compelling capability to support magnetic modes. They also show
advantages such as CMOS-compatible fabrication processes and lower
resonance-induced heating compared to their plasmonic counterparts.
These unique characteristics are enabling the advancement of
cutting-edge sensing techniques for new applications. In this
Perspective, we review the recent progress of dielectric metasurface
sensors. First, the working mechanisms and properties of dielectric
metasurfaces are briefly introduced by highlighting several
state-of-the-art examples. Next, we describe the application of
dielectric metasurfaces for label-free sensing in three different
detection schemes, namely, refractometric sensing, surface-enhanced
spectroscopy through Raman scattering and infrared absorption, and
chiral sensing. Finally, we provide a perspective for the future
directions of this exciting research field.}},
Publisher = {{AMER CHEMICAL SOC}},
Address = {{1155 16TH ST, NW, WASHINGTON, DC 20036 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Altug, H (Corresponding Author), Ecole Polytech Fed Lausanne EPFL, Inst BioEngn, CH-1015 Lausanne, Switzerland.
Tseng, Ming Lun; Jahani, Asaman; Leitis, Aleksandrs; Altug, Hatice, Ecole Polytech Fed Lausanne EPFL, Inst BioEngn, CH-1015 Lausanne, Switzerland.}},
DOI = {{10.1021/acsphotonics.0c01030}},
ISSN = {{2330-4022}},
Keywords = {{dielectric metasurface; biosensing; bound state in the continuum; chiral
sensing; surface-enhanced infrared absorption; surface enhanced Raman
sensing}},
Keywords-Plus = {{SURFACE-ENHANCED RAMAN; FEMTOSECOND LASER; BROAD-BAND; METAMATERIALS;
NANOPARTICLES; SPECTROSCOPY; FABRICATION; NANOPHOTONICS; RESONANCES;
SCATTERING}},
Research-Areas = {{Science \& Technology - Other Topics; Materials Science; Optics; Physics}},
Web-of-Science-Categories = {{Nanoscience \& Nanotechnology; Materials Science, Multidisciplinary;
Optics; Physics, Applied; Physics, Condensed Matter}},
Author-Email = {{[email protected]}},
ResearcherID-Numbers = {{Tseng, Ming Lun/J-8127-2012
}},
ORCID-Numbers = {{Tseng, Ming Lun/0000-0003-0418-8162
Leitis, [email protected]/0000-0003-4855-5876}},
Funding-Acknowledgement = {{European Research Council (ERC)European Research Council (ERC)European
Commission {[}682167]; European Union Horizon 2020 Framework Programme
for Research and Innovation {[}FETOPEN-737071, 777714, 875672]}},
Funding-Text = {{The authors gratefully acknowledge funding from the European Research
Council (ERC) under Grant Agreement No. 682167 VIBRANT-BIO and the
European Union Horizon 2020 Framework Programme for Research and
Innovation under Grant Agreement Nos. FETOPEN-737071 (ULTRA-CHIRAL
Project), 777714 (NOCTURNO Project), and 875672 (POCSEL Project). The
authors also acknowledge the comments from Deepthy Kavungal and Dr.
Kseniia Boriachek, EPFL.}},
Number-of-Cited-References = {{113}},
Times-Cited = {{16}},
Usage-Count-Last-180-days = {{80}},
Usage-Count-Since-2013 = {{120}},
Journal-ISO = {{ACS Photonics}},
Doc-Delivery-Number = {{PZ2KB}},
Unique-ID = {{WOS:000612567900005}},
DA = {{2021-12-22}},
}
@incollection{ WOS:000637939500003,
Author = {Droulias, Sotiris and Bougas, Lykourgos},
Editor = {{Kamenetskii, E}},
Title = {{Surface Plasmons for Chiral Sensing}},
Booktitle = {{CHIRALITY, MAGNETISM AND MAGNETOELECTRICITY: SEPARATE PHENOMENA AND
JOINT EFFECTS IN METAMATERIAL STRUCTURES}},
Series = {{Topics in Applied Physics}},
Year = {{2021}},
Volume = {{138}},
Pages = {{25-52}},
Abstract = {{Chiral sensitive techniques have been used to probe the fundamental
symmetries of the universe, study biomolecular structures, and even
develop safe drugs. The traditional method for the measurement of
chirality is through optical activity, however, chiroptical signals are
inherently weak and often suppressed by large backgrounds. Different
techniques have been proposed to overcome the limitations of
traditionally used optical polarimetry, such as cavity- and/or
nanophotonic-based schemes. In this chapter we demonstrate how surface
plasmon resonance can be employed as a new research tool for chiral
sensing, which we term here as CHIral Surface Plasmon Resonance
(CHISPR). We present how surface plasmons at a metal-chiral interface
are sensitive to the chirality parameter of the chiral medium and how
their properties can be exploited to reveal information not easily
accessible using standard polarimetric/nanophotonic approaches. We then
present an experimental realisation of CHISPR, an angle-resolved
measurement scheme, and demonstrate how can one detect the complete
chirality (handedness and magnitude) of a chiral sample while being also
sensitive to both the real and imaginary part of a chiral sample's
refractive index. We present analytical results and numerical
simulations of CHISPR measurements, predicting signals in the mdeg range
for chiral samples of <100 nm thickness at visible wavelengths. Finally,
we present a theoretical analysis that clarifies the underlying physics
of the near-field chiral interactions and their far-field manifestation.
In overall, CHISPR builds upon the strengths of standard SPR: does not
require elaborate fabrication and has the advantage of being directly
implementable on existing SPR instrumentation, making it, thus, an ideal
modality for studying chirality dynamics on surfaces.}},
Publisher = {{SPRINGER INTERNATIONAL PUBLISHING AG}},
Address = {{GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND}},
Type = {{Review; Book Chapter}},
Language = {{English}},
Affiliation = {{Droulias, S (Corresponding Author), FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Crete, Greece.
Bougas, L (Corresponding Author), Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.
Droulias, Sotiris, FORTH, Inst Elect Struct \& Laser, Iraklion 71110, Crete, Greece.
Bougas, Lykourgos, Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany.}},
DOI = {{10.1007/978-3-030-62844-4\_2}},
ISSN = {{0303-4216}},
EISSN = {{1437-0859}},
ISBN = {{978-3-030-62844-4; 978-3-030-62843-7}},
Keywords-Plus = {{DOWN POLARIMETRY CRDP; RESONANCE; THIN; BIOMOLECULES; ENHANCEMENT;
REFLECTION; PLATFORM; LENGTH; PATHS; PHASE}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories = {{Materials Science, Multidisciplinary; Physics, Applied}},
Author-Email = {{[email protected]
Funding-Acknowledgement = {{ {[}FETOPEN-737071]}},
Funding-Text = {{We acknowledge theEuropean Commission Horizon 2020, ULTRA-CHIRAL Project
(grant no. FETOPEN-737071) for the financial support.}},
Number-of-Cited-References = {{78}},
Times-Cited = {{0}},
Usage-Count-Last-180-days = {{7}},
Usage-Count-Since-2013 = {{7}},
Journal-ISO = {{Top. Appl. Phys.}},
Doc-Delivery-Number = {{BR2LW}},
Unique-ID = {{WOS:000637939500003}},
DA = {{2021-12-22}},
}
@article{ WOS:000607506400007,
Author = {Spyridakos, Dimitris and Papadogkonaki, Sofia and Dionysopoulou,
Stavroula and Mastrodimou, Niki and Polioudaki, Hara and Thermos,
Kyriaki},
Title = {{Effect of acute and subchronic administration of (R)-WIN55,212-2 induced
neuroprotection and anti inflammatory actions in rat retina: CB1 and CB2
receptor involvement}},
Journal = {{NEUROCHEMISTRY INTERNATIONAL}},
Year = {{2021}},
Volume = {{142}},
Month = {{JAN}},
Abstract = {{Cannabinoids have been shown to protect the retina from
ischemic/excitotoxic insults. The aim of the present study was to
investigate the neuroprotective and anti-inflammatory properties of the
synthetic cannabinoid (R)-WIN55,212-2 (CB1/CB2 receptor agonist) when
administered acutely or subchronically in control and AMPA treated
retinas. Sprague-Dawley rats were intravitreally administered (acutely)
with vehicle or AMPA, in the absence or presence of (R)-WIN55,212-2
(10(-7) -10(-4) M) alone or in combination with AM251 {[}CB1 receptor
antagonist/inverse agonist,10(-4) M] and AM630 (CB2 receptor
antagonist,10(-4) M). In addition, AMPA was coadministered with the
racemic (R,S)-WIN55,212 (10(-4) M). (R)-WIN55,212-2 was also
administered subchronically (25,100 mu g/kg,i.p.,4d) in control and AMPA
treated rats. Immunohistochemical studies were performed using
antibodies against the CB1R, and retinal markers for retinal neurons
(brain nitric oxide synthetase, bNOS) and microglia (ionized calcium
binding adaptor molecule 1, Iba1). ELISA assay was employed to assess
TNFa levels in AMPA treated retinas. Intravitreal administration of
(R)-WIN55,212-2 reversed the AMPA induced loss of bNOS expressing
amacrine cells, an effect that was blocked by both AM251 and AM630.
(R,S)WIN55,212 had no effect. (R)-WIN55,212-2 also reduced a) the AMPA
induced activation of microglia, by activating CB2 receptors that were
shown to be colocalized with Ibal + reactive microglial cells, and b)
TNF alpha levels in retina. (R)-WIN55,212-2 administered subchronically
led to the downregulation of CB1 receptors at the high dose of 100 mu
g/kg(i.p.), and to the attenuation of the WIN55,212-2 induced
neuroprotection of amacrine cells. At the same dose, (R)-WIN55,212-2 did
not attenuate the AMPA induced increase in the number of reactive
microglia cells, suggesting CB2 receptor downregulation under subchronic
conditions. This study provides new findings regarding the role of CB1
and CB2 receptor activation by the synthetic cannabinoid
(R)-WIN55,212-2, administered acutely or sub-chronically, on neuron
viability and microglia activation in healthy and diseased retina.}},
Publisher = {{PERGAMON-ELSEVIER SCIENCE LTD}},
Address = {{THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Thermos, K (Corresponding Author), Univ Crete, Fac Med, Dept Pharmacol, Iraklion 71003, Greece.
Spyridakos, Dimitris; Papadogkonaki, Sofia; Dionysopoulou, Stavroula; Mastrodimou, Niki; Thermos, Kyriaki, Univ Crete, Sch Med, Dept Pharmacol, Iraklion 71003, Greece.
Polioudaki, Hara, Univ Crete, Sch Med, Dept Biochem, Iraklion 71003, Greece.}},
DOI = {{10.1016/j.neuint.2020.104907}},
Article-Number = {{104907}},
ISSN = {{0197-0186}},
EISSN = {{1872-9754}},
Keywords = {{R)-WIN55,212-2; CB1 and CB2 cannabinoid receptors; Retina;
Excitotoxicity; Neuroprotection; Microglia; Downregulation}},
Keywords-Plus = {{ACID AMIDE HYDROLASE; PRESSURE-INDUCED ISCHEMIA; CANNABINOID RECEPTOR;
ENDOCANNABINOID SYSTEM; MICROGLIAL CELLS; DOWN-REGULATION;
UP-REGULATION; IN-VIVO; EXPRESSION; MODEL}},
Research-Areas = {{Biochemistry \& Molecular Biology; Neurosciences \& Neurology}},
Web-of-Science-Categories = {{Biochemistry \& Molecular Biology; Neurosciences}},
Author-Email = {{[email protected]
ResearcherID-Numbers = {{Polioudaki, Hara/AAT-8496-2020}},
Funding-Acknowledgement = {{Christina Spyraki award; Graduate Program of Neurosciences, School of
Medicine, Ultrachiral project; European Grant Horizon 2020 {[}737071]}},
Funding-Text = {{This work was supported by the Christina Spyraki award to DS and SD, the
Graduate Program of Neurosciences, School of Medicine, Ultrachiral
project, European Grant Horizon 2020 (737071).}},
Number-of-Cited-References = {{83}},
Times-Cited = {{1}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{0}},
Journal-ISO = {{Neurochem. Int.}},
Doc-Delivery-Number = {{PR8TY}},
Unique-ID = {{WOS:000607506400007}},
DA = {{2021-12-22}},
}
@article{ WOS:000585195500003,
Author = {Tsilipakos, Odysseas and Xomalis, Angelos and Kenanakis, George and
Farsari, Maria and Soukoulis, Costas M. and Economou, Eleftherios N. and
Kafesaki, Maria},
Title = {{Split-cube-resonator-based metamaterials for polarization-selective
asymmetric perfect absorption}},
Journal = {{SCIENTIFIC REPORTS}},
Year = {{2020}},
Volume = {{10}},
Number = {{1}},
Month = {{OCT 19}},
Abstract = {{A split-cube-resonator-based metamaterial structure that can act as a
polarization- and direction-selective perfect absorber for the infrared
region is theoretically and experimentally demonstrated. The structure,
fabricated by direct laser writing and electroless silver plating, is
comprised of four layers of conductively-coupled split-cube magnetic
resonators, appropriately rotated to each other to bestow the desired
electromagnetic properties. We show narrowband polarization-selective
perfect absorption when the structure is illuminated from one side; the
situation is reversed when illuminating from the other side, with the
orthogonal linear polarization being absorbed. The absorption peak can
be tuned in a wide frequency range by a sparser or denser arrangement of
the split cube resonators, allowing to cover the entire atmospheric
transparency window. The proposed metamaterial structure can find
applications in polarization-selective thermal emission at the IR
atmospheric transparency window for radiative cooling, in cost-effective
infrared sensing devices, and in narrowband filters and linear
polarizers in reflection mode.}},
Publisher = {{NATURE RESEARCH}},
Address = {{HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Tsilipakos, O (Corresponding Author), Fdn Res \& Technol Hellas, Inst Elect Struct \& Laser, Iraklion 70013, Crete, Greece.
Tsilipakos, Odysseas; Kenanakis, George; Farsari, Maria; Soukoulis, Costas M.; Economou, Eleftherios N.; Kafesaki, Maria, Fdn Res \& Technol Hellas, Inst Elect Struct \& Laser, Iraklion 70013, Crete, Greece.
Xomalis, Angelos, Univ Cambridge, NanoPhoton Ctr, Dept Phys, Cavendish Lab, JJ Thompson Ave, Cambridge CB3 0HE, England.
Soukoulis, Costas M., Iowa State Univ, Ames Lab US DOE, Ames, IA 50011 USA.
Soukoulis, Costas M., Iowa State Univ, Dept Phys \& Astron, Ames, IA 50011 USA.
Economou, Eleftherios N., Univ Crete, Dept Phys, Iraklion 70013, Crete, Greece.
Kafesaki, Maria, Univ Crete, Dept Mat Sci \& Technol, Iraklion 70013, Crete, Greece.}},
DOI = {{10.1038/s41598-020-74221-7}},
Article-Number = {{17653}},
ISSN = {{2045-2322}},
Keywords-Plus = {{METASURFACES; CRYSTALS}},
Research-Areas = {{Science \& Technology - Other Topics}},
Web-of-Science-Categories = {{Multidisciplinary Sciences}},
Author-Email = {{[email protected]}},
ResearcherID-Numbers = {{Kafesaki, Maria/E-6843-2012
Farsari, Maria/W-8041-2019
Economou, Eleftherios N./E-6374-2010
Tsilipakos, Odysseas/C-1275-2011
Kenanakis, George/G-1283-2010}},
ORCID-Numbers = {{Kafesaki, Maria/0000-0002-9524-2576
Farsari, Maria/0000-0003-2435-4156
Tsilipakos, Odysseas/0000-0003-4770-0955
Kenanakis, George/0000-0001-5843-3712}},
Funding-Acknowledgement = {{European UnionEuropean Commission {[}736876, 829061, 737071]; the
project HELLAS-CH under ``Action for Strengthening Research and
Innovation Infrastructures{''} {[}MIS 5002735]; Operational Program
``Competitiveness, Entrepreneurship and Innovation{''} (NSRF 2014-2020)
- Greece; FEMTOSURF, the European Union {[}825512]}},
Funding-Text = {{This work was partially supported by the European Union's Horizon 2020
FETOPEN programme under project VISORSURF grant agreement No. 736876,
project NANOPOLY Grant agreement No. 829061, and project ULTRACHIRAL
grant agreement No. 737071, the project HELLAS-CH (MIS 5002735)
implemented under ``Action for Strengthening Research and Innovation
Infrastructures{''}, funded by the Operational Program
``Competitiveness, Entrepreneurship and Innovation{''} (NSRF 2014-2020)
co-financed by Greece and the European Union (European Regional
Development Fund), and FEMTOSURF, the European Union's Horizon 2020
research and innovation program under grant agreement No. 825512. The
authors acknowledge Dr. A. Selimis for useful discussions on sample
fabrication.}},
Number-of-Cited-References = {{27}},
Times-Cited = {{4}},
Usage-Count-Last-180-days = {{8}},
Usage-Count-Since-2013 = {{14}},
Journal-ISO = {{Sci Rep}},
Doc-Delivery-Number = {{OL2TT}},
Unique-ID = {{WOS:000585195500003}},
OA = {{Green Published, gold}},
DA = {{2021-12-22}},
}
@article{ WOS:000577329800030,
Author = {Zannoni, Nora and Wikelski, Martin and Gagliardo, Anna and Raza, Atif
and Kramer, Stefan and Seghetti, Chiara and Wang, Nijing and Edtbauer,
Achim and Williams, Jonathan},
Title = {{Identifying volatile organic compounds used for olfactory navigation by
homing pigeons}},
Journal = {{SCIENTIFIC REPORTS}},
Year = {{2020}},
Volume = {{10}},