Results 41 to 50 of about 61,834 (304)

2D Bi₂Se₃ van der Waals Epitaxy on Mica for Optoelectronics Applications

Nanomaterials, 2020
Bi2Se3 possesses a two-dimensional layered rhombohedral crystal structure, where the quintuple layers (QLs) are covalently bonded within the layers but weakly held together by van der Waals forces between the adjacent QLs.
Shifeng Wang, Yong Li, Annie Ng, Qing Hu, Qianyu Zhou, Xin Li, Hao Liu   +6 more
doaj   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Modeling of van der Waals-Based Photovoltaic Devices

IEEE Journal of the Electron Devices Society
Two-dimensional Transition Metal Dichalcogenide-based van der Waals heterostructures have been proposed for avant-garde, highly scalable optoelectronic and excitonic devices.
Angel A. Diaz-Burgos, Enrique G. Marin, Francisco Pasadas, Francisco G. Ruiz, Andres Godoy   +4 more
doaj   +1 more source

Theoretical and experimental investigation of low-volgage and low-loss 25-Gbps Si photonic crystal slow light Mach-Zehnder modulators with interleaved p/n junction

Frontiers in Physics, 2014
In this study, we investigated the performance of Si lattice-shifted photonic crystal waveguide (LSPCW) Mach-Zehnder modulators theoretically and experimentally. The LSPCW increases the phase shift in modulator to 2.3 - 2.5 times higher, which allows for
Yosuke eTerada, Hiroyuki eIto, Hong C Nguyen, Toshihiko eBaba   +3 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

DESORPTION OF Te CAPPING LAYER FROM ZnTe (100): AUGER SPECTROSCOPY, LOW-ENERGY ELECTRON DIFFRACTION AND SCANNING TUNNELING MICROSCOPY

Journal of Fundamental and Applied Sciences, 2016
The influence of the annealing temperature to desorb a protective Te capping layer of the zinc telluride (ZnTe (100)) surface was investigated. The surface reconstruction of the ZnTe (100) upon the removal of a Te capping layer grown by the molecular ...
K. K. Sossoe, M. M. Dzagli, A. Sylla, B. Grandidier, A. M. Mohou, T .J. Zoueu, S. Toure   +6 more
doaj   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Control of Intrinsic Defects in Lithium Niobate Single Crystal for Optoelectronic Applications

Crystals, 2017
A single crystal of lithium niobate is an important optoelectronic material. It can be grown from direct melt only in a lithium deficient non-stoichiometric form as its stoichiometric composition exhibits incongruent melting.
Rajeev Bhatt, Indranil Bhaumik, Sarveswaran Ganesamoorthy, Riscob Bright, Mohammad Soharab, Ashwini Kumar Karnal, Pradeep Kumar Gupta   +6 more
doaj   +1 more source

Chemical State Detection and Charge Transfer in Complex Oxide Heterostructures via In Situ Auger Electron Spectroscopy

Advanced Functional Materials, EarlyView.
In situ Auger Electron Spectroscopy resolves oxidation states with high fidelity during the pulsed laser deposition of multivalent perovskite manganate and vanadate heterostructures. The chemical‐state signature is carried by the valence‐electron population of the transition‐metal cation, read out through the relative intensities of Auger fine ...
Harish Kumarasubramanian, Jayakanth Ravichandran   +1 more
wiley   +1 more source

Waveguide optoelectronics / [PDF]

, 1992
"Proceedings of the NATO Advanced Study Institute on Waveguide Optoelectronics, Glasgow, Scotland, 30 July-10 August 1990.""Published in cooperaton with NATO Scientific Affairs Division."Includes bibliographical references and ...
NATO Advanced Study Institute on Waveguide Optoelectronics(1990 :Glasgow, Scotland), North Atlantic Treaty Organization.Scientific Affairs Division., De La Rue, Richard M.,, Marsh, John H.,   +3 more
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