Results 41 to 50 of about 1,772,724 (258)

An InGaAsSb Based 640 × 512 Focal Plane Array With Low Surface Leakage Current for Extended Shortwave Detection

open access: yesIEEE Photonics Journal
An extended-wavelength InGaAsSb focal plane array (FPA) with a 15 μm pixel pitch, 640 × 512 format, and a cutoff wavelength of 3.22 μm is demonstrated.
Ruoyu Xie   +13 more
doaj   +1 more source

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

open access: yesAdvanced 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   +1 more
wiley   +1 more source

Electroluminescent devices based on polymeric thin films [PDF]

open access: yes, 2001
This thesis is concerned with the preparation of organic light-emitting diodes (LEDs) by using different thin film technologies: the Langmuir-Blodgett (LB) technique; spin-coating and thermal evaporation.
Young, J.G., Young, Jung Gun
core  

Photonic integrated devices and functions on hybrid polymer platform

open access: yes, 2017
Paper 100981A, 11 S.Photonic devices and new functions based on HHI's hybrid integration platform PolyBoard are presented providing lowloss thin-film-element-based light routing, an on-chip micro-optical bench and flexible chips comprising optical and ...
Norbert Keil   +23 more
core   +1 more source

2.49 GHz low phase-noise optoelectronic oscillator using 1.55μm VCSEL for avionics and aerospace applications [PDF]

open access: yes, 2008
We present here a 1.55 μm single mode Vertical-Cavity Surface-Emitting Laser (VCSEL) based low phase-noise ring optoelectronic (OEO) oscillator operating at 2.49 GHz for aerospace, avionics and embedded systems applications.
Jean-Claude Mollier   +9 more
core   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Optoelectronic oscillators for communication systems [PDF]

open access: yes, 2012
We introduce and report recent developments on a novel five port optoelectronic voltage controlled oscillator consisting of a resonant tunneling diode (RTD) optical-waveguide integrated with a laser diode.
Romeira, Bruno, Figueiredo, J. M. L.
core   +1 more source

Dynamics of resonant tunneling diode optoelectronic oscillators [PDF]

open access: yes, 2012
Tese de dout., Física, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2012The nonlinear dynamics of optoelectronic integrated circuit (OEIC) oscillators comprising semiconductor resonant tunneling diode (RTD) nanoelectronic quantum devices has ...
Romeira, Bruno
core   +1 more source

Chemical doping of unsubstituted perylene diimide to create radical anions with enhanced stability and tunable photothermal conversion efficiency

open access: yesFrontiers in Chemistry, 2023
N-doping of perylene diimides (PDIs) to create stable radical anions is significant for harvesting photothermal energy due to their intensive absorption in the near-infrared (NIR) region and non-fluorescence.
Canyan Che   +7 more
doaj   +1 more source

Modeling and simulation of injection dynamics for quantum dot based single-photon sources

open access: yes, 2016
Single semiconductor quantum dots embedded in p-i-n diodes have been demonstrated to operate as electrically driven single-photon sources. By means of numerical simulations one can explore the limitations in the carrier injection dynamics and further ...
Hans-Jurgen Wunsche   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy