Results 71 to 80 of about 10,154 (259)
Excitation of vortices in semiconductor microcavities [PDF]
Physical Review B, 2007 4 pages, 4 ...
Liew, T C H, Kavokin, A V, Shelykh, I A
openaire +2 more sources
GeSn Quantum Wells for Room‐Temperature Mid‐Infrared Lasing on Si and on Insulator Platforms
Advanced Optical Materials, EarlyView.This work demonstrates a high‐performance GeSn‐on‐Insulator (GeSnOI) platform achieving laser emission up to room temperature. By utilizing Group IV GeSn quantum well heterostructures, we successfully reached a target wavelength of 3.3 µm. This advancement paves the way for fully integrated Mid‐IR photonic CMOS‐compatible sources, overcoming the ...
Antoine Meyer +10 more
wiley +1 more source
Two-photon-induced photoconductivity enhancement in semiconductor microcavities: a theoretical investigation [PDF]
, 2002 We describe a detailed theoretical investigation of two-photon absorption photoconductivity in semiconductor microcavities. We show that high enhancement (by a factor of >10, 000) of the nonlinear response can be obtained as a result of the microcavity ...
Folliot, H. +7 more
core
Photonic-crystal-embedded microcavities [PDF]
, 2004 We propose two-dimensional photonic-crystal-embedded microcavities. Numerical simulations of waveguide-coupled square microcavities with square lattice of holes reveal spatially selective high-Q resonances with maximum internal field intensity about two ...
Poon, Andrew W. +5 more
core +1 more source
Observation of Zitterbewegung in photonic microcavities
Light: Science & Applications, 2023 AbstractWe present and experimentally study the effects of the photonic spin–orbit coupling on the real space propagation of polariton wavepackets in planar semiconductor microcavities and polaritonic analogues of graphene. In particular, we demonstrate the appearance of an analogue Zitterbewegung effect, a term which translates as ‘trembling motion ...
Lovett, S. +8 more
openaire +5 more sources
High Efficiency 3‐Tandem Top Emitting Pure‐Blue OLEDs Beyond the BT.2020 Blue Standard
Advanced Optical Materials, EarlyView.We report a high‐efficiency ultrapure‐blue 3‐tandem TEOLED through synergistic optimization of a narrowband MR‐TADF emitter, Purcell‐based cavity design, and pure Ag cathode/CPL structure. The optimized device achieves 463 nm emission, an ultranarrow FWHM of 10 nm, CIE y of 0.040, and a blue index of 1,596 cd/A/y, surpassing the BT.2020 blue standard ...
Jun Hyeog Oh +5 more
wiley +1 more source
Electrochemically oxidised porous silicon microcavities [PDF]
, 2000 Ageing effects in porous silicon microcavities result in emission enhancement and resonance peak blueshift. In this paper we propose electrochemical oxidation as a method to control these effects. Properties of porous silicon microcavities obtained after
L. Pavesi +3 more
core +1 more source
Origami‐Mediated Low‐Voltage Electret Soft Robotic Actuators for Human‐Machine Haptic Interfaces
Advanced Science, EarlyView.This work introduces an origami‐mediated soft electret actuator that combines compliant mechanical design and enhanced charge retention for low‐voltage vibrotactile feedback. The device delivers reliable tactile cues, demonstrates durable performance under continuous actuation, and enables intuitive interaction in applications such as tactile ...
Han Chen +8 more
wiley +1 more source
Advanced Science, EarlyView.A continuous conductivity gradient is formed in a porous MXene/melamine foam via directional evaporation, thereby improving impedance matching and enhancing electromagnetic attenuation. The resulting monolithic composite delivers absorption‐dominant EMI shielding with ultralow reflection, offering a simple route toward lightweight EMI shielding ...
Dawei Zhang +6 more
wiley +1 more source
Diagnostyka, 2023 The problem of the dense presence of voids in the solid insulation of cables remains a concern for researchers in terms of diagnosis and maintenance. The focus of this paper is to investigate the influence of both the layout and density of microcavities ...
Medoukali Hemza, Zegnini Boubakeur
doaj +1 more source