Results 41 to 50 of about 13,032 (198)

Basal Plane Activation of SnS2 Thin‐Film by Fluorine Doping for Selective Solar‐Driven CO2 Reduction With Enhanced Quantum Efficiency

Advanced Science, EarlyView.
The synergistic effect of fluorine doping and sulfur vacancies boosts the activity of the active sites without active‐site modulation, leading to enhanced CO2 photoreduction efficiency and a selectivity switch from CH4 to CO on tin disulfide continuous thin films. ABSTRACT Photocatalytic conversion of CO2 into value‐added fuels offers a viable approach
Tadios Tesfaye Mamo, Mohammad Qorbani, Adane Gebresilassie Hailemariam, Putikam Raghunath, Che‐Men Chu, Wen‐Hsin Yuan, Amr Sabbah, Yen‐Yu Wang, Shuo‐Yun Chang, Ming‐Chang Lin, Wei‐Yen Woon, Yu‐Jung Lu, Heng‐Liang Wu, Ken‐Tsung Wong, Kuei‐Hsien Chen, Li‐Chyong Chen   +15 more
wiley   +1 more source

HgCdTe-based heterostructures for terahertz photonics

APL Materials, 2017
Due to their specific physical properties, HgCdTe-based heterostructures are expected to play an important role in terahertz photonic systems. Here, focusing on gated devices presenting inverted band ordering, we evidence an enhancement of the terahertz ...
S. Ruffenach, A. Kadykov, V. V. Rumyantsev, J. Torres, D. Coquillat, D. But, S. S. Krishtopenko, C. Consejo, W. Knap, S. Winnerl, M. Helm, M. A. Fadeev, N. N. Mikhailov, S. A. Dvoretskii, V. I. Gavrilenko, S. V. Morozov, F. Teppe   +16 more
doaj   +1 more source

Restricting Copper Reconstruction with Ultrathin Polydopamine for Selective and Stable Electrochemical CO2 Reduction Reaction to C2 Products

Advanced Energy and Sustainability Research, EarlyView.
An ultrathin polydopamine coating on copper microcubes mitigates the surface reconstruction during EC‐CO2RR. Copper nanocubes form on the surface of the microcubes in the early stages of the EC‐CO2RR, contributing to suppressed surface reconstruction and sustained Faradaic efficiency for C2 products.
Omran Moradlou, Mohammad Qorbani, Amr Sabbah, Varad Modak, Mengstu Etay Ashebir, Osama Nasr, Chih‐Yang Huang, Fadila Arum Ramadani, Chen‐Hao Wang, Heng‐Liang Wu, Li‐Chyong Chen, Kuei‐Hsien Chen   +11 more
wiley   +1 more source

Facet‐Tailored Co3O4 as Electronic Regulator and Stabilizing Support for Ru Nanocluster: Toward Efficient Alkaline HER

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Facet‐engineered Ru@Co3O4 nanosheets precisely anchor Ru nanoclusters on the Co3O4 (111) facets, optimizing the hydrogen‐bond network of interfacial water and downshifting the Ru d‐band center. The Ru@Co3O4 NSs show outstanding HER activity and long‐term durability in AEMWE devices. This work demonstrates a crystal facet engineering strategy to develop
Jia Wang, De Wang, Zhenyu He, Mengyu Yan, Yinyu Xiang, Huipeng Li, Lina Xu, Junsheng Li   +7 more
wiley   +1 more source

Barrier Detectors Versus Homojunction Photodiode

Metrology and Measurement Systems, 2014
In the last two decades several new concepts of photodetectors to improve their performance have been proposed. New strategies are especially addressed to the group of so called high-operating-temperature detectors where - apart from increasing of ...
Martyniuk P., Gawron W.
doaj   +1 more source

Nonlinearity and pixel shifting effects in HXRG infrared detectors [PDF]

, 2017
We study the nonlinearity (NL) in the conversion from charge to voltage in infrared detectors (HXRG) for use in precision astronomy. We present laboratory measurements of the NL function of a H2RG detector and discuss the accuracy to which it would need ...
Huff, E., Plazas, A. A., Rhodes, J., Shapiro, C., Smith, R.   +4 more
core   +2 more sources

Laser Absorption Shock Tube Study of C1 to C4 n‐Alkyl Formate Pyrolysis

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT n$n$‐Alkyl formates are considered as potential alternative fuels or fuel additives. While their oxidation chemistry has been investigated intensely, their pyrolysis chemistry requires more experimental insights. The present work utilizes shock tube experiments in combination with infrared laser absorption measurements to obtain information ...
Malte Döntgen, Alina Wildenberg, Karl Alexander Heufer   +2 more
wiley   +1 more source

Near-Infrared InGaAs Detectors for Background-limited Imaging and Photometry [PDF]

, 2014
Originally designed for night-vision equipment, InGaAs detectors are beginning to achieve background-limited performance in broadband imaging from the ground. The lower cost of these detectors can enable multi-band instruments, arrays of small telescopes,
Croll, Bryce, Simcoe, Robert A., Sullivan, Peter W.   +2 more
core   +2 more sources

Mid‐Infrared Integrated Photonics: Material Platforms and Emerging Applications

Laser &Photonics Reviews, EarlyView.
Mid‐infrared (MIR) integrated photonics enables advanced chemical and biological sensing through the unique absorption features of molecules in the 2–20 µm range. This review highlights recent material advances such as chalcogenide glasses, silicon, and graphene and explores MIR applications in environmental monitoring, medical diagnostics ...
Muhammad Ali Butt, Daniel Pastor Abellán, Ryszard Piramidowicz   +2 more
wiley   +1 more source

Method of preparing radially homogeneous mercury cadmium telluride crystals [PDF]

, 1989
Hg(1-x)Cd(x)Te is prepared in an improved directional solidification method in which a precast alloy sample containing predetermined amounts of Hg, Cd, and Te is disposed in a sealed ampule and a furnace providing two controlled temperature zones is ...
Lehoczky, Sandor L., Szofran, Frank R.
core   +1 more source