Results 91 to 100 of about 1,129 (234)

Flexible Implantable Silicon Carbide Multi‐Electrode Array (MEA) for Cell Multichannel Recording and Cell Ablation

Advanced Materials Technologies, EarlyView.
Flexible silicon carbide (SiC) microelectrode arrays enable high‐fidelity, multichannel cell extracellular recording and precise localized ablation. SiC has been extensively evaluated to persist long‐term in chronic physiological conditions while remaining robust, with excellent electrical and electrochemical stability.
Minh Anh Huynh, Matthew Barton, Sharda Yadav, Tuan‐Khoa Nguyen, Nam‐Trung Nguyen   +4 more
wiley   +1 more source

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

An integrated transceiver based on a reflective semiconductor optical amplifier for the access network

, 2006
In this paper, a reflective transceiver is presented which monolithically integrates a wavelength duplexer, a reflective SOA (RSOA) and a detector.
Smit, M.K., Vries, T de, Nötzel, R., Veldhoven, PJ van, Leijtens, XJM Xaveer, Oei, YS Yok-Siang, Nötzel, R Richard, Sander - Jochem, MJH, Sander - Jochem, M.J.H., Besten, den, J.H., Leijtens, X.J.M., Oei, Y.S., Vries, de, T., Besten, JH Jan Hendrik den, Koonen, A.M.J., Sieben - Xu, L., Smit, MK Meint, Veldhoven, van, P.J., Leijtens, X.J.M.; id_orcid, Sieben-Xu, L Ling   +19 more
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Waveguide Geometry–Driven Trade‐Offs in Resonant Cavity Sensor Performance

Advanced Optical Materials, EarlyView.
Waveguide geometry governs the interplay between sensitivity, intrinsic Q‐factor, and wavelength noise in silicon nitride resonant sensors. Contrary to intuition, higher sensitivity does not ensure superior performance. Low‐noise, high‐Q ridge resonators achieve the lowest detection limits, revealing that detection is ultimately constrained by noise ...
Mohammad Talebi Khoshmehr, Bakiye Imran Akca, Mateusz Słowikowski, Drecka Dagmara, Marcin Juchniewicz, Ryszard Piramidowicz, Muhammad Ali Butt   +6 more
wiley   +1 more source

Quantum dot semiconductor optical amplifier/silicon external cavity laser for O-band high-speed optical communications Quantum dot semiconductor optical amplifier/silicon external cavity laser for O-band high-speed optical communications

, 2020
. We report a hybrid integrated external cavity laser by butt coupling a quantum dot reflective semiconductor optical amplifier and a silicon-on-insulator chip.
Qi Li, Keren Bergman, Peter Magill, Xiaoliang Zhu, Shuyu Yang, Yi Zhang, Michael Hochberg, Thomas Baehr-Jones   +7 more
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When Cubic is Not Isotropic: Phonon–Exciton Decoupling in CuInSnS4 Single Crystals

Advanced Optical Materials, EarlyView.
A cubic CuInSnS4 crystal does not fully play by cubic rules. While phonons follow the average iso‐tropic lattice symmetry, the disorder‐localized excitons break away, showing strong, and reproduci‐ble polarization‐dependent emission. This work shows how intrinsic cation disorder can turn a mac‐roscopically cubic material into a source of hidden ...
Lara Kim Linke, Yvonne Tomm, Xinyun Liu, Galina Gurieva, Daniel M. Többens, Pardis Adams, Michel Calame, Ryan W. Crisp, Jessica Boland, Seán Kavanagh, Susan Schorr, Mirjana Dimitrievska   +11 more
wiley   +1 more source

Mono‐ and Bilayer MoS2 Photodetectors: High‐Performance Broadband AC Readout With Color‐Selective Noise Suppression

Advanced Optical Materials, EarlyView.
Mono‐ and bilayer MoS2 photodetectors enable wavelength‐selective AC photoresponse and optically driven capacitance modulation under visible illumination. Green excitation produces the strongest cumulative capacitive response, consistent with trap‐mediated charge accumulation at mono/bilayer and metal–MoS2 interfaces.
Pegah Zandi, Mengqi Fang, Arindam Phani, Muhammad Toyabur Rahman, Eui‐Hyeok Yang, Seonghwan Kim   +5 more
wiley   +1 more source

Applications of Ring Resonators and fiber delay lines for sensors and WDM Networks [PDF]

, 2008
En esta tesis doctoral, se presentan diversas aportaciones científicas en el ámbito de las aplicaciones de la fibra óptica y de las comunicaciones ópticas. En primer lugar, la tesis doctoral describe nuevas técnicas de medida remota y multiplexación en
Montalvo García, Julio
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Circularly Polarized Red‐NIR Emission With High Dissymmetry Factor From Achiral [Mo6I8(OCOC2F5)6]2− Cluster Anion Embedded in a Bent‐Core Liquid Crystal Host

Advanced Optical Materials, EarlyView.
Associating a chiral bent core liquid crystal molecule, that self‐assembles into helical nanofilaments, with an achiral red‐NIR phosphorescent octahedral molybdenum cluster produces a hybrid material exhibiting efficient red‐NIR circularly polarized emission under UV excitation.
Jeanne Rebours, Shamima Akhter, Md Kamrul Hasan, Serge Paofai, Maria Amela‐Cortes, Marianne Estelle Prévôt, Yann Molard   +6 more
wiley   +1 more source

An InP Reflective SOA-EAM for 10 Gb/s Colorless Multi-IFoF/mmWave Fiber-Wireless Uplink in 5G Networks

, 2021
International audienceWe experimentally present a 10-Gb/s Fiber Wireless IFoF/V-band uplink of four625Mbaud 16QAM signals with a linear, high-power monolithically integrated reflective electroabsorptionmodulator with semiconductor optical amplifier for ...
Gomez, Carmen, Ruggeri, Eugenio, Atra, Kebede, Miliou, Amalia, Provost, Jean-Guy, Vagionas, Christos, Achouche, Mohand, Pommereau, Frederic, Cerulo, Giancarlo, Garreau, Alexandre, Erasme, Didier, Ware, Cédric, Mallecot, Franck, Mekhazni, Karim, Wilk, Arnaud, Paret, Jean-François, Fortin, Catherine   +16 more
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