Results 81 to 90 of about 20,087,803 (245)

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

Advanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park, Geon Park, Junhyung Cho, Jaechan Song, Wangmyung Choi, Jaehyun Hur, Nicola Gasparini, Hocheon Yoo   +7 more
wiley   +1 more source

Optical nonlinearities of colloidal InP@ZnS core-shell quantum dots probed by Z-scan and two-photon excited emission

APL Materials, 2015
Spectrally resolved nonlinear optical properties of colloidal InP@ZnS core-shell quantum dots of various sizes were investigated with the Z-scan technique and two-photon fluorescence excitation method using a femtosecond laser system tunable in the range
Dominika Wawrzynczyk, Janusz Szeremeta, Marek Samoc, Marcin Nyk   +3 more
doaj   +1 more source

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source

APTES‐Mediated Ti‐Squarate MOF/n‐GaN Nanowire Photoanodes for Efficient Photoelectrochemical Water Splitting

Advanced Functional Materials, EarlyView.
The APTES linker establishes a permanent interfacial dipole, reducing the work function of n‐GaN from 3.55 to 3.29 eV. This strengthens the built‐in electric field, significantly accelerating hole extraction to drive the oxygen evolution reaction (OER). Ultimately, this tailored charge‐separation architecture achieves a remarkable 4.78‐fold enhancement
Jeong‐Kyun Oh, Sergio Carrasco, Sooyeon Ra, Seok‐Ho Seo, Chandran Bagavath, Sung‐Un Kim, Min‐Seok Lee, Jong‐Su Kim, Miriam Vos‐Gracia, Dan Na, Kyung‐Hwan Jin, Sangmin An, Dong Ick Son, Cheul‐Ro Lee, Patricia Horcajada, Yong‐Ho Ra   +15 more
wiley   +1 more source

Large nonlinear optical absorption and refraction of β-In2Se3 thin film from above to below bandgap excitation

Applied Physics Express
Nonlinear optical materials, especially two-dimensional materials, are anticipated to reveal broadband optical nonlinearity for future miniaturized photonic applications.
Dan Wu, Wen Dong, Yanqing Ge, Xueqin Cao, Mingjian Shi, Erkang Li, Nan Ma, Yixuan Zhou, Yuanyuan Huang, Chunhui Lu, Xinlong Xu   +10 more
doaj   +1 more source

Nonlinear Absorption Response Correlated to Embedded Ag Nanoparticles in BGO Single Crystal: From Two-Photon to Three-Photon Absorption

Scientific Reports, 2018
We report on the embedded silver (Ag) nanoparticles fabricated by Ag+ ion implantation into the Bi4Ge3O12 (BGO) crystal. Localized surface plasmon resonance (LSPR) phenomenon has been observed by linear optical absorption spectrum, which is accordance ...
Rang Li, Ningning Dong, Feng Ren, Hiro Amekura, Jun Wang, Feng Chen   +5 more
doaj   +1 more source

Deformation‐Tolerant Functional Elastomer Overlayers for Haze‐Assisted Light Extraction and Color Conversion in Stretchable Mechanoluminescent Films

Advanced Functional Materials, EarlyView.
Functional elastomer overlayers are integrated onto stretchable ZnS:Cu‐PDMS mechanoluminescent films to regulate light after emission without modifying the emissive composite. NLC‐PU provides haze‐assisted light extraction to enhance green mechanoluminescence, while DCM‐NLC‐PU combines green‐to‐yellow‐orange color conversion with enhanced outward light
Gyudam Jeon, Seongkyu Song, Soon Moon Jeong, Na Young Ha   +3 more
wiley   +1 more source

Emulation of coherent absorption of Fock-state quantum light in a programmable linear photonic circuit

Nature Communications
Non-Hermitian quantum systems, governed by nonunitary evolution, offer powerful tools for manipulating quantum states through engineered loss. A prime example is coherent absorption, where quantum states undergo phase-dependent partial or complete ...
Govind Krishna, Jun Gao, Sam O’Brien, Rohan Yadgirkar, Venkatesh Deenadayalan, Stefan Preble, Val Zwiller, Ali W. Elshaari   +7 more
doaj   +1 more source

Microfluidic Architecting of Patchy MXene Core‐Shell Particles for Ultralow‐Loading Photothermal Shape‐Memory Actuation

Advanced Functional Materials, EarlyView.
Spatially distributing Ti3C2Tx nanosheets into core‐shell architecture, rather than as directly dispersed flakes, mitigates aggregation and enhances photon harvesting. When the Ti3C2Tx core‐shell particles are incorporated into a shape‐memory polymer matrix at an ultralow loading of 0.0024 wt%, the improved photothermal conversion translates into ...
May Maung Zaw, Maxim M. Trubyanov, Qian Wang, Siyu Chen, Hongyi Chen, Keyu Chen, Hongbin Sun, Muthu Vignesh Vellayappan, Xiaoying Qi, Sharon Mui Ling Nai, Kostya S. Novoselov, David W. Rosen, Daria V. Andreeva   +12 more
wiley   +1 more source

Birefringence and Anisotropy of the Losses Due to Two-Photon Absorption of Femtosecond Pulses in Crystals

Photonics
It is shown that the two-photon absorption (TPA)-induced losses in a non-centrosymmetric crystal reduce considerably when the angle θ between the polarization vector of incident radiation and the optical c-axis is 45°.
Valeri Kovalev, George Krasin
doaj   +1 more source