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| 1 | Efficient unidirectional polarization-controlled excitation of surface plasmon polaritons显示文摘Efficient excitation of surface plasmon polaritons(SPPs)remains one of the most challenging issues in areas of plasmonics related to information communication technologies.In particular,combining high SPP excitation efficiency and acceptance of any polarization of incident light appeared to be impossible to attain due to the polarized nature of SPPs.Here we demonstrate plasmonic couplers that represent arrays of gap SPP resonators producing upon reflection two orthogonal phase gradients in respective linear polarizations of incident radiation.These couplers are thereby capable of efficiently converting incident radiation with arbitrary polarization into SPPs that propagate in orthogonal directions dictated by the phase gradients.Fabricated couplers operate at telecom wavelengths and feature the coupling efficiency of,25%for either of two linear polarizations of incident radiation and directivity of SPP excitation exceeding 100.We further demonstrate that an individual wavelength-sized unit cell,representing a meta-scatterer,can also be used for efficient and polarization sensitive SPP excitation in compact plasmonics circuits. | Anders Pors Michael G Nielsen Thomas Bernardin Jean-Claude Weeber Sergey I Bozhevolnyi | 2014 | Light(Science & Applications)2014，3，1： | 11 |
| 2 | High-fidelity multimode fibre-based endoscopy for deep brain in vivo imaging显示文摘Progress in neuroscience relies on new techniques for investigating the complex dynamics of neuronal networks.An ongoing challenge is to achieve minimally invasive and high-resolution observations of neuronal activity in vivo inside deep brain areas.Recently introduced methods for holographic control of light propagation in complex media enable the use of a hair-thin multimode optical fibre as an ultranarrow imaging tool.Compared to endoscopes based on graded-index lenses or fibre bundles,this new approach offers a footprint reduction exceeding an order of magnitude,combined with a significant enhancement in resolution.We designed a compact and high-speed system for fluorescent imaging at the tip of a fibre,achieving a resolution of 1.18±0.04μm across a 50-μm field of view,yielding 7-kilopixel images at a rate of 3.5 frames/s.Furthermore,we demonstrate in vivo observations of cell bodies and processes of inhibitory neurons within deep layers of the visual cortex and hippocampus of anaesthetised mice.This study paves the way for modern microscopy to be applied deep inside tissues of living animal models while exerting a minimal impact on their structural and functional properties. | Sergey Turtaev Ivo T.Leite Tristan Altwegg-Boussac Janelle M.P.Pakan Nathalie L.Rochefort Tomáš Čižmár | 2018 | Light(Science & Applications)2018，7，1： | 8 |
| 3 | Bifunctional gap-plasmon metasurfaces for visible light: polarization-controlled unidirectional surface plasmon excitation and beam steering at normal incidence显示文摘Integration of multiple diversified functionalities into a single,planar and ultra-compact device has become an emerging research area with fascinating possibilities for realization of very dense integration and miniaturization in photonics that requires addressing formidable challenges,particularly for operation in the visible range.Here we design,fabricate and experimentally demonstrate bifunctional gap-plasmon metasurfaces for visible light,allowing for simultaneous polarization-controlled unidirectional surface plasmon polariton(SPP)excitation and beam steering at normal incidence.The designed bifunctional metasurfaces,consisting of anisotropic gap-plasmon resonator arrays,produce two different linear phase gradients along the same direction for respective linear polarizations of incident light,resulting in distinctly different functionalities realized by the same metasurface.The proof-of-concept fabricated metasurfaces exhibit efficient(425%on average)unidirectional(extinction ratio 420 dB)SPP excitation within the wavelength range of 600–650 nm when illuminated with normally incident light polarized in the direction of the phase gradient.At the same time,broadband(580–700 nm)beam steering(30.6°–37.9°)is realized when normally incident light is polarized perpendicularly to the phase gradient direction.The bifunctional metasurfaces developed in this study can enable advanced research and applications related to other distinct functionalities for photonics integration. | Fei Ding Rucha Deshpande Sergey I Bozhevolnyi | 2017 | Light(Science & Applications)2017，6，1： | 3 |
| 4 | Linagliptin alleviates fatty liver disease in diabetic db/db mice显示文摘AIM To study the effects of linagliptin on the structural signs of non-alcoholic fatty liver disease(NAFLD) in db/db mice. METHODS Male diabetic db /db mice(BKS.Cg-Dock7m+/+Leprdb/J) aged 10 wk received the dipeptidyl peptidase 4(DPP4) inhibitor linagliptin(10 mg/kg) or saline as a placebo once per day by gavage for 8 wk. Intact db/db mice served as controls. Structural changes in the liver were analyzed from light and electron microscopic images of sections from intact, placebo-treated and linagliptin-treated animals. We estimated the changes in hepatocytes, sinusoidal cells, liver microvasculature and lymphatic roots. Hepatic staining for lymphatic vessel endothelial hyaluronan receptor-1(LYVE-1) was assessed by immunohistochemistry. RESULTS In 18-wk-old diabetic mice, liver steatosis(predominantly microvesicular and mediovesicular steatosis) was accompanied by dilation of the roots of the lymphatic system, interlobular blood vessels and bile canaliculi. Compared to saline-treated mice, linagliptin-treated mice exhibited a reduction in the mean numeral densities of hepatocytes with lipid droplets(92.4% ± 1.7% vs 64.9% ± 5.8% per field of view, P = 0.0002) and a lower proportion of hepatocytes with a high density of lipid droplets(20.7% ± 3.6% vs 50.4% ± 3.1%, P = 0.0007). We observed heterogeneous hepatocytes and relatively preserved cell structures in the linagliptin group. Dilation of blood and lymphatic vessels, as well as ultrastructural changes in the hepatocyte endoplasmic reticulum and mitochondria, were alleviated by linagliptin treatment. In intact and placebo-treated mice, immunohistochemical staining for LYVE-1 was observed in the endothelial cells of interlobular lymphatic vessels and on the membranes of some endothelial sinusoidal cells. We observed an enlarged LYVE-1 reaction area in linagliptin-treated mice compared to intact and placebo-treated mice. The improvement in the structural parameters of the liver in linagliptin-treated mice was independent to changes in the plasma glucose levels. CONCLUSION The DPP4 inhibitor linagliptin alleviates liver steatosis and structural changes in the hepatic microvasculature and lymphatic roots in a model of NAFLD in diabetic db/db mice. | Svetlana V Michurina Irina Ju Ishenko Vadim V Klimontov Sergey A Archipov Natalia E Myakina Marina A Cherepanova Eugenii L Zavjalov Galina V Koncevaya Vladimir I Konenkov | 2016 | World Journal of Diabetes2016，7，19： | 2 |
| 5 | Synthesis of Gold Nanoparticles by Some Strains of Arthrobacter Genera显示文摘 | Tamaz Levan Kalabegishvi|i Elena Ivan Kirkesalt Alexander Nikoloz Rcheulishvili Etery Nikoloz Ginturi Ivane Giorgi Murusidze Dodo Trofim Pataraya Manana Amiran Gurielidze Giorgi Ilia Tsertsvadze Vakhtang Nikoloz Gabunia Levan Giorgi Lomidze David Nugzar Gvarialadze Marina VladimirovnaFrontasyeva Sergey Sergeevich Pavlov Inga Ivanovna Zinicovscaia Marianne Janette Raven Ntsoaki Maditselana Francinah Seaga Arnaud Faanhof | 2012 | 材料科学与工程(中英文A版)2012，2，2： | 2 |
| 6 | Thermodynamic evaluation and optimization of the MnO-Al2O3 and MnO-Al2 O3 SiO2 systems and applications to inclusion engineering显示文摘 | Jung I H Kang Y B Sergei A | 2004 | Metallurgy and Material Transaction B2004，35，4： | 1 |
| 7 | Biosensors based on enzyme field - effect transistors for determination of some substrates and inhibitors 显示文摘 | Sergei V D Alexey P S Yaroslav I K | 2003 | Anal Bioanal Chem2003，377，3： | 1 |
| 8 | Design,synthesis and biological evaluation of novel potent MDM2/p53 small-molecule inhibitors显示文摘 | Yan A I Sergei V V Elena K B | 2015 | Bioorg Med Chem Lett2015，25，2： | 1 |
| 9 | A piezoactuated droplet-dispensing microfluidic chip显示文摘 | MOHAMMED J A SERGEY I G RIDHA B M | 2010 | Journal of Microelectromchannical Systems2010，19，1： | 1 |
| 10 | Dysregalation ofCa2+ Signa-ling in astrocytes from mice lacking amyloid precursor protein显示文摘 | CRISTINA I UNDE SERGEY G | 2011 | AmJ Physiol Cell Kiysiol2011，300，： | 1 |
| 11 | Antiviral and antitumor peptides from insects显示文摘 | Kim S I Bekker G | 2002 | Proc Natl Acad Sci USA2002，99，12： | 1 |
| 12 | 显示文摘 | Sergei I N Yuri K Yitzhak M | 2002 | The European Journal o5 Neuroscience2002，12，： | 1 |
| 13 | Sonochemi-cal approach to the synthesis of Fe3 04 @ Si02 core-shell nanoparticles with tunable properties 显示文摘 | Anne L M Sergei I N Karine G | 2008 | ACSnano2008，2，5： | 1 |
| 14 | Methane discharge from a deep-sea submarine mud volcano into the upper water column by gas hydrate-coated methane bubbles显示文摘 | Sauter Eberhard J Muyakshin Sergey I Charlou Jean-Luc | 2006 | Earth and Planetary Science Letters2006，243，： | 1 |
| 15 | High Repletion Frequency Picosecond Pulse Generation 显示文摘 | SERGEY V ZAOU I | 2002 | IEEE Conference Record of Power Modulator Symposium2002，10，8： | 1 |
| 16 | Immunity,inflamma-tion and cancer显示文摘 | Sergei I Grivennikov Florian R | 2010 | Cell2010，140，6： | 1 |
| 17 | Kinetics and thermodynamics of the Cr(Ⅲ) adsorption on the activated carbon from co-mingled wastes显示文摘 | Sergei I L Andrei I L Olga L G | 2004 | Colloids and Surfaces A: Physicochem Eng Aspects2004，242，： | 1 |
| 18 | The phenylurea cytokinin 4PU-30 protects maize plants against glyphosate action显示文摘 | ISKREN G S VERA S A SERGEI V I | 2006 | Pesticide Biochemistry and Physiology2006，85，3： | 1 |
| 19 | High-current and high-vohage pulsed testing of resistors 显示文摘 | Sergey I S Kristiansen M Dickens J C | 2000 | IEEE Transactions on Plasma Science2000，28，5： | 1 |
| 20 | Theoretical analysis of long-range dielectric-loaded surface plasmonpolariton waveguides显示文摘 | Gosciniak J Holmgaard T Sergey I | 2011 | Journal of Lightwave Technology2011，29，10： | 1 |
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