Results 81 to 90 of about 8,247 (230)

Self‐Hybridized Exciton‐Polariton Photodetectors From Layered Metal‐Organic Chalcogenolates

Advanced Functional Materials, Volume 36, Issue 34, 27 April 2026.
Self‐hybridized exciton‐polariton photodetectors are demonstrated using high refractive index mithrene, eliminating the need for top mirrors. This simplified architecture enables tunable sub‐bandgap photodetection via lower exciton‐polariton states and enhanced carrier transport through ultrafast polariton group velocities.
Bongjun Choi, Adam D. Alfieri, Wangleong Chen, Deep Jariwala   +3 more
wiley   +1 more source

Patterning of Lead Halide Perovskite Device Stacks on CMOS Readout Using Selective Microfabrication Protocols

Advanced Materials, Volume 38, Issue 21, 13 April 2026.
We present a microfabrication and integration strategy for lead halide perovskite photodetectors on electronic readouts. Standard photolithography, aqueous processing, selective transparent electrode etching, and plasma‐assisted pixel isolation enable precise monolithic integration of patterned 400 × 400 perovskite microphotodetector arrays on a CMOS ...
Sergey Tsarev, Erfu Wu, Kyuik Cho, Xuqi Liu, Quang Nhat Dang Lung, Emeric Hartman, Tian Sun, Bekir Turedi, Gebhard J. Matt, Stefanie Frick, Sebastian Siol, Taekwang Jang, Ivan Shorubalko, Sergii Yakunin, Maksym V. Kovalenko   +14 more
wiley   +1 more source

Colorimetry and efficiency of white LEDs : Spectral width dependence [PDF]

, 2012
The potential colour rendering capability and efficiency of white LEDs constructed by a combination of individual red, green and blue (RGB) LEDs are analysed.
Davis, Haitz, Martin, O'Donnell, Ohno
core   +1 more source

Joint intelligent optimization design of the active region and electron blocking layer for AlGaN-based deep ultraviolet LEDs

AIP Advances
Aiming to enhance the internal quantum efficiency (IQE) of AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs), the active region based on the V-shaped quantum well (QW) and the electron-blocking layer (EBL) structure are jointly optimized ...
Jinglei Wang, Huimin Lu, Jianhua Ma, Yifan Zhu, Zihua Zhang, Tongjun Yu, Xuecheng Wei, Hua Yang, Jianping Wang   +8 more
doaj   +1 more source

The Cosmological Bootstrap: Inflationary Correlators from Symmetries and Singularities [PDF]

, 2019
Scattering amplitudes at weak coupling are highly constrained by Lorentz invariance, locality and unitarity, and depend on model details only through coupling constants and particle content.
Arkani-Hamed, Nima, Baumann, Daniel, Lee, Hayden, Pimentel, Guilherme L.   +3 more
core   +3 more sources

Ultrafast Photocatalytic Wettability Switching in Substrate‐Interface Tailored Titanium Dioxide Thin Films

Advanced Materials Interfaces, Volume 13, Issue 7, 7 April 2026.
This study demonstrates ultrafast photocatalytic wettability switching in TiO2 thin films by tailoring substrate doping and interface oxides. Enhanced switching rates and hemiwicking effects are achieved through optimized material stacks and nanostructuring.
Rucha A. Deshpande, Jesper Navne, David C. B. Nielsen, Mathias Adelmark, Radu Malureanu, Ole Hansen, Rafael Taboryski   +6 more
wiley   +1 more source

Metric embeddings with relaxed guarantees [PDF]

, 2009
We consider the problem of embedding finite metrics with slack: We seek to produce embeddings with small dimension and distortion while allowing a (small) constant fraction of all distances to be arbitrarily distorted.
Chan, THH, Dhamdhere, K, Gupta, A, Kleinberg, J, Slivkins, A   +4 more
core   +1 more source

Room Temperature Synthesis and Photopatterning of Mesoporous Titanium Dioxide Thin Films

Advanced Materials Technologies, Volume 11, Issue 7, 6 April 2026.
A nanofabrication strategy combining deep‐UV photolithography with block copolymer self‐assembly enables direct patterning and mineralization of mesoporous TiO2 thin films at room temperature. Photocatalytic titanium oxo‐clusters promote polymer degradation under UV irradiation, enabling multiscale control over porosity, film thickness, and lateral ...
Youssef Ghossoub, Laurent Noel, Dominique Berling, Victor Malgras, David Grosso, Olivier Soppera   +5 more
wiley   +1 more source

Planar Compound Eye Lens for Enhanced Light Extraction Efficiency in AlGaN‐Based Deep Ultraviolet LEDs

Advanced Photonics Research
Total internal reflection prevents photons from escaping deep‐ultraviolet (DUV) LED, resulting in serious energy waste and reduced service life.
Qilong Tan, Jie Zhao, Qixin Li, Huan Liu, Bin Dong, Chenguang He, Zhitao Chen, Wen Zhou, Ningyang Liu   +8 more
doaj   +1 more source

Problems in extremal graph theory [PDF]

, 2010
We consider a variety of problems in extremal graph and set theory. The {\em chromatic number} of $G$, $\chi(G)$, is the smallest integer $k$ such that $G$ is $k$-colorable.
Ozkahya, Lale
core