Results 61 to 70 of about 313,034 (335)

Electron–Matter Interactions During Electron Beam Nanopatterning

Advanced Functional Materials, EarlyView.
This article reviews the electron–matter interactions important to nanopatterning with electron beam lithography (EBL). Electron–matter interactions, including secondary electron generation routes, polymer radiolysis, and electron beam induced charging, are discussed.
Camila Faccini de Lima, Prathiba Thamizhavel, Taylor J. Woehl   +2 more
wiley   +1 more source

High-Spatial-Resolution Helium Detection and Its Implications for Helium Accumulation Mechanisms

Applied Sciences
Helium is a scarce strategic resource. Currently, all economically valuable helium resources are found in natural gas reservoirs. Owing to helium’s different formation and migration processes compared to natural gas’s, the traditional method of ...
Chao Lu, Bang Wang, Di Zhu, Quanyou Liu, Xuhang Zhang, Huaiyu He   +5 more
doaj   +1 more source

Supercritical Helium Gas Cooling

TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 1969
This paper reviews supercritical helium gas cooling methods. The thermal transport properties of supercritical helium near 4.2°K are collected.Cryogenic helium pump or bellow pump for forced supercritical circulation is adequate to the laboratory-scale cooling system.The superconducting composite configurations with hollow conductors are used for ...
openaire   +2 more sources

Silver Ion‐Mediated [hk1]‐Oriented Sb2Se3 Crystal Growth for Efficient Photoelectrochemical Hydrogen Evolution

Advanced Functional Materials, EarlyView.
Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang, Zhenbin Wang, Mirjana Dimitrievska, Miloš Baljozović, Yongping Gan, Pardis Adams, Sanghyun Bae, Thomas Moehl, Wenzhe Niu, Xiang jiu Guan, S. David Tilley   +10 more
wiley   +1 more source

Enrichment factors and play fairway mapping of helium in typical zones of the Ordos Basin

Meitian dizhi yu kantan
BackgroundThe Ordos Basin enjoys abundant natural gas resources, which generally bear helium, making this basin hold great helium resource potential. In this case, detailed exploration is essential for the future transition from natural gas-helium joint ...
Jianrong GAO, Shizhen TAO, Xiangbai LIU, Wei YANG, Zhenyu ZHAO, Xiuyan CHEN, Wanglin XU, Chunlin ZHANG, Wei SONG, Yue CHEN, Junping HUANG, Zhanrong MA   +11 more
doaj   +1 more source

GEM Operation in Negative Ion Drift Gas Mixtures

, 2003
The first operation of GEM gas gain elements in negative ion gas mixtures is reported. Gains up to several thousand were obtained from single-stage GEMs in carbon disulfide vapor at low pressure, and in mixtures of carbon disulfide with Argon and Helium,
A Schreiner, C.J Martoff, Crane, G Bonvincini, Giomataris, I Shipsey, J Miyamoto, M Katz-Hyman, Martoff, Ohnuki, Pack, R Ayad, Rice-Evans, Sauli, Sauli, Snowden-Ifft   +15 more
core   +1 more source

Single-hit resolution measurement with MEG II drift chamber prototypes [PDF]

, 2016
Drift chambers operated with helium-based gas mixtures represent a common solution for tracking charged particles keeping the material budget in the sensitive volume to a minimum.
Baldini, A. M., Baracchini, E., Cascella, M., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Dussoni, S., Galli, L., Grancagnolo, F., Grassi, M., Martinelli, V., Nicolò, D., Panareo, M., Pepino, A., Piredda, G., Renga, F., Ripiccini, E., Signorelli, G., Tassielli, G. F., Tenchini, F., Venturini, M., Voena, C.   +23 more
core   +2 more sources

Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams

Advanced Functional Materials, EarlyView.
Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan, Erlantz Lizundia, Hao Jia, Lennart Bergström   +3 more
wiley   +1 more source

The coupling action of helium and nitrogen enrichment and its significance

Journal of Natural Gas Geoscience
Helium, a critical rare strategic resource primarily sourced from natural gas, is currently a subject of intense research regarding its enrichment processes within gas reservoirs.
Shengfei Qin, Guoxiao Zhou, Jiyuan Li, Gang Tao, Zizhuo Zhao   +4 more
doaj   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source