Results 61 to 70 of about 49,905 (304)

Wafer‐Scale 2D High‐Entropy Transition Metal Dichalcogenide Thin‐Film Catalysts for Efficient and Durable Photoelectrochemical Hydrogen Production

Advanced Materials, EarlyView.
A wafer‐scale 2D high‐entropy (MoWTaNbRu)S2 thin‐film catalyst with a distorted 1T phase integrated onto p‐Si photocathode is designed for highly efficient and durable photoelectrochemical hydrogen evolution reaction. The high‐entropy effect in layered transition metal dichalcogenides optimizes hydrogen adsorption energetics, accelerates photogenerated
Sang Eon Jun, Jin Ho Seo, Jaehyun Kim, Hyungsoo Lee, Seongbeen Kim, Woo Seok Cheon, Sabina Kim, In Hye Kwak, Byeong‐Gwan Cho, Ki Chang Kwon, Chul‐Ho Lee, Jungwon Park, Jooho Moon, Jennifer A. Dionne, Ho Won Jang   +14 more
wiley   +1 more source

Biodegradable Luminescent Silicon Quantum Dots for Two Photon Imaging Applications [PDF]

, 2012
Cadmium- and lead-based quantum dots are normally coated for biological applications, because their degradation may result in the release of toxic heavy metal ions.
Chen-An Tien, Ching-Wen Chang, Folarin Erogbogbo, Folarin Erogbogbo, Mark Swihart, Priscilla Adjei-Baffour, Wing-Chueng Law   +6 more
core   +2 more sources

Plasma‐Sequence‐Engineered Atomic Layer Deposition of Ultra‐Thin SiNx for Enhanced Etching Resistance in Extreme Ultraviolet Pellicles

Advanced Materials Interfaces, EarlyView.
Plasma‐sequence‐engineered ALD (PSE‐ALD), based on sequential NH3 and N2 plasma pulses, enables ultrathin, dense SiNx films. ToF‐MS analysis confirms ligand removal via HCl evolution, while increased film density indicates network densification. The resulting SiNx coating provides robust protection of graphite under H2 plasma exposure.
Hye‐Young Kim, Sung Kyu Jang, Jihun Kim, Jong‐Hyun Choi, Ji‐Beom Yoo, Hyun‐Mi Kim, Seul‐Gi Kim, Hyeongkeun Kim   +7 more
wiley   +1 more source

Differential etching after lithic heat treatment: First results of an experimental study

Journal of Lithic Studies, 2018
The practice of lithic heat treatment creates a combination of initial dull flake scars and subsequent smooth flake scars when the implement is finished after heating.
Linda Kiers
doaj   +1 more source

Determination of Gallium in Coal Fly Ash by Inductively Coupled Plasma-Optical Emission Spectrometry with Microwave Digestion

Yankuang ceshi, 2020
BACKGROUND The content of gallium in coal fly ash is 12-230μg/g. The determination of gallium in coal fly ash is crucial to realize the high-value-added utilization of coal fly ash.
HUANG Jing, WANG Ying-bin, ZHOU Guan-xuan, MA Zhen-qian   +3 more
doaj   +1 more source

XXXIII.—On hydrofluoric acid [PDF]

J. Chem. Soc.
n ...
openaire   +1 more source

Passivated SiC Surfaces for Photonic and Quantum Applications: Balancing Chemical Stability and Surface Luminescence

Advanced Materials Interfaces, EarlyView.
Low‐temperature passivation of SiC reveals that optical surface quality and chemical stability are not directly correlated. Ar plasma‐treated and SiNx‐passivated surfaces yield the lowest photoluminescence background, whereas CF4 plasma and ALD‐grown dielectrics introduce higher emission.
Marina Scharin‐Mehlmann, Sarah Saarmann, Christian Gobert, Robert Köhler, Patrick Berwian   +4 more
wiley   +1 more source

Porous silicon formation and electropolishing

, 2001
Electrochemical etching of silicon in hydrofluoride containing electrolytes leads to pore formation for low and to electropolishing for high applied current. The transition between pore formation and polishing is accompanied by a change of the valence of
A. Ulhir, A. Valance, D. R. Turner, D. Vanmaekelbergh, G. C. John, H. Föll, H. Gerischer, H. K. Henisch, Herbert Spohn, J. Erlebacher, J. Krug, J. O’M. Bockris, L. T. Canham, M. Rauscher, Markus Rauscher, R. L. Smith, V. Lehmann, V. Lehmann, V. P. Parkuthik, V. Parkhutik, Y. Kang   +20 more
core   +1 more source

Spin‐On SiOx‐Assisted Inkjet Printing for Interdigitated n+ and p+ Poly‐Si/SiOx Contacts in Silicon Solar Cells With Suppressed Unintended Doping

Advanced Materials Technologies, EarlyView.
This work presents an innovative spin‐on SiOx‐assisted inkjet‐printed approach to form localized n+ and p+ poly‐Si/SiOx passivating contacts for high‐efficiency silicon solar cells within a single‐annealing step. The developed process results in a well‐defined interdigitated doping pattern, with unintended doping and cross‐doping concentrations ...
Jiali Wang, Jinlei Ren, Laura Creon, Paula Peres, Rene Chemnitzer, Pierre‐Yves Corre, Sieu Pheng Phang, Daniel Macdonald, AnYao Liu   +8 more
wiley   +1 more source

Method of making an apertured casting [PDF]

, 1976
An apertured casting is made by first forming a duplicate in the shape of the finished casting, positioning refractory metal bodies such as wires in the duplicate at points corresponding to apertures or passageways in finished products, forming a ceramic
Terray, A.
core   +1 more source