Results 51 to 60 of about 2,970 (179)

Coarsening‐Resistant Ag Sinter Composites: Mechanistic Insights From Different Ag–Additive Systems

Advanced Electronic Materials, EarlyView.
An Ag–WC sintered composite exhibiting superior resistance to thermal coarsening. Different particle‐reinforced Ag sinter composites showed markedly different microstructural responses to thermal aging. The comparison revealed that robust Ag–additive interfaces maintain grain‐boundary pinning, whereas insufficient interfacial stability results in the ...
Yang Liu, Chuantong Chen, Ran Liu, Akitsu Shigetou, Katsuaki Suganuma   +4 more
wiley   +1 more source

GaSb-based 2062 nm single-frequency VECSEL with 3.2 W output power

JPhys Photonics
In contrast to the electrically pumped VCSEL, the optically pumped VECSELs (vertical-external-cavity surface-emitting lasers) feature an external resonator and thus combine the power and brightness scalability of solid-state disk lasers with the ...
Steffen Adler, Peter Holl, Elke Diwo-Emmer, Lutz Kirste, Marcel Rattunde   +4 more
doaj   +1 more source

Short-wavelength GaInNAs/GaAs semiconductor disk lasers

Electronics Letters, 2008
The use of GaInNAs/GaAs as an alternative active material to InGaAs/GaAs for semiconductor disk lasers with Watt-level emission in the 1160-1210-nm wavelength range is reported.
Vetter, S.L., Hastie, J.E., Korpijarvi, V.M., Puustinen, J., Guina, M., Okhotnikov, O., Calvez, S., Dawson, M.D.   +7 more
openaire   +3 more sources

MXene‐Derived Highly Oriented TiN Enables Ta3N5 Photoanodes for Transmission‐Mode Bias‐Free Solar Water Splitting

Advanced Energy Materials, EarlyView.
This work reports 2D MXene‐derived TiN thin films with (111)‐preferred orientation for transparent Ta3N5 photoanodes, demonstrating effective electron transfer behavior. All‐nitride electron‐collection architecture based on MXene‐derived TiN and n‐GaN resolves a long‐standing materials bottleneck between photocarrier transport and light transmission in
Jin Wook Yang, Hee Ryeong Kwon, Young Seon Yoon, Sung Yeon Lim, Tae Hyung Lee, Jiwoo Lee, Sung Hyuk Park, Sohyeon Park, Jungwon Park, Jin Young Kim, Ho Won Jang   +10 more
wiley   +1 more source

On the Impact of Mechanical Constraint on Band Structure and Photo‐Elastic Effect in Photonic Resonators

Advanced Physics Research, EarlyView.
We computationally investigate the mechanical, electronic, and optical properties of strained GeSn microdisks on silicon substrates. By combining photo‐elasticity, strain‐dependent band‐structure calculations, and optical mode analysis, we study how strain distribution, structural configuration, and temperature affect the electronic band structure and ...
Jon Schlipf, Ignatii Zaitsev, Inga Anita Fischer, Davide Spirito, Bernd Witzigmann, Costanza Lucia Manganelli   +5 more
wiley   +1 more source

A narrow bandgap Schottky heterojunction Fe2N/CeO2 microneedle triggering sonodynamic reactive oxygen species storm for drug‐resistance‐free skin fungal infection

BMEMat, EarlyView.
Inorganic sonosensitizers suffer from inefficient electron‐hole separation, rapid recombination, and wide bandgaps in anti‐fungal applications. We propose MN@Fe2N/CeO2 to directly eliminate fungi without drug resistance. Combining semiconductor CeO2's advantages with Fe2N's high work function and activity enables efficient Schottky heterojunctions ...
Li Wang, Jiayi Yang, Ning Tang, Youbin Zheng, Yichao Hou, Chutong Liu, Lihao Guo, Yingying Liao, Gandong Zhou, Weiwei Wu, Xin Du, Shuxiang Xu, Jie Yin, Miaomiao Yuan   +13 more
wiley   +1 more source

Reverse Engineering and Performance Evaluation of a Pump Impeller Fabricated With Additive Manufacturing

Chemie Ingenieur Technik, EarlyView.
This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler, Kati Schatz, Sebastian Rehfeldt, Harald Klein   +3 more
wiley   +1 more source

Optically pumped DBR-free semiconductor disk lasers

Optics Express, 2015
We report high power distributed Bragg reflector (DBR)-free semiconductor disk lasers. With active regions lifted off and bonded to various transparent heatspreaders, the high thermal impedance and narrow bandwidth of DBRs are mitigated. For a strained InGaAs multi-quantum-well sample bonded to a single-crystalline chemical-vapor deposited diamond, a ...
Zhou, Yang, Alexander R, Albrecht, Jeffrey G, Cederberg, Mansoor, Sheik-Bahae   +3 more
openaire   +2 more sources

Interface‐Engineered MXene/g‐C3N4 Heterostructures for Energy and Environmental Applications

EcoEnergy, EarlyView.
This review highlights how interface engineering in MXene/g‐C3N4 heterostructures regulates charge transfer, band alignment, and surface chemistry, enabling broad applications in photocatalytic conversion, environmental remediation, energy storage, and multifunctional sensing/therapy. ABSTRACT Two‐dimensional MXene/g‐C3N4 heterostructures have recently
Feng Wang, Geng Liu, Xiaoqiang An
wiley   +1 more source

Programmable luminescent platform based on carbon quantum dots enables wavelength‐multiplexed optical data storage and encryption

FlexMat, EarlyView.
A carbon‐quantum‐dots (CQDs)‐based programmable luminescent platform is proposed for multidimensional optical information encryption and high‐capacity data storage by leveraging wavelength‐division multiplexing. Furthermore, a prototype tri‐layer optical disk is demonstrated, where data written via laser ablation on different CQD layers are retrieved ...
Honglei Sun, Qingfeng Gui, Yunsong Di, Zihan Ying, Siqi Liu, Mengqi Li, Meng Zhang, Lun Yang, Yushen Liu, Zhixing Gan   +9 more
wiley   +1 more source