Results 11 to 20 of about 10,535,256 (359)

Sub-terahertz feedback interferometry and imaging with emitters in 130 nm BiCMOS technology

Scientific Reports, 2023
In this work, we present the effect of self-mixing in compact terahertz emitters implemented in a 130 nm SiGe BiCMOS technology. The devices are based on a differential Colpitts oscillator topology with optimized emission frequency at the fundamental ...
Dmytro B. But, Kȩstutis Ikamas, Cezary Kołaciński, Aleksandr V. Chernyadiev, Domantas Vizbaras, Wojciech Knap, Alvydas Lisauskas   +6 more
doaj   +1 more source

Enhancing reversibility of LiNi0.5Mn1.5O4 by regulating surface oxygen deficiency

Carbon Energy, 2023
Oxygen deficiency has crucial effects on the crystal structure and electrochemical performance of spinel oxide lithium electrode materials such as LiNi0.5Mn1.5O4 (LNMO) cathode.
Dandan Wang, Cong Gao, Xuefeng Zhou, Shang Peng, Mingxue Tang, Yonggang Wang, Lujun Huang, Wenge Yang, Xiang Gao   +8 more
doaj   +1 more source

The near-room-temperature upsurge of electrical resistivity in Lu-H-N is not superconductivity, but a metal-to-poor-conductor transition

Matter and Radiation at Extremes, 2023
The recent report of superconductivity in nitrogen-doped lutetium hydride (Lu-H-N) at 294 K and 1 GPa brought hope for long-sought-after ambient-condition superconductors.
Di Peng, Qiaoshi Zeng, Fujun Lan, Zhenfang Xing, Yang Ding, Ho-kwang Mao   +5 more
doaj   +1 more source

Hexagonal B–C–N composite consisting of h-BN and graphite separated by B–C nanolayer [PDF]

Matter and Radiation at Extremes
Graphite and hexagonal boron nitride (h-BN), despite their structural similarity, exhibit opposing electronic properties, namely, metallic conductivity and wide-bandgap insulation, respectively.
Baoyin Xu, Xiaohong Yuan, Bingtao Feng, Yifeng Jiang, Yaqi She, Zhanhui Ding, Yue Pan, Shucheng Liu, Kuo Hu, Zhaodong Liu, Quanjun Li, Bingbing Liu, Hu Tang   +12 more
doaj   +1 more source

Some Magnetic Properties and Magnetocaloric Effects in the High-Temperature Antiferromagnet YbCoC₂

Magnetochemistry, 2023
The YbCoC2 compound, which crystallizes in a base-centered orthorhombic unit cell in the Amm2 space group CeNiC2 structure, is unique among Yb-based compounds due to the highest magnetic ordering temperature of TN=27 K.
Denis Alexandrovich Salamatin, Vladimir Nikolaevich Krasnorussky, Mariya Viktorovna Magnitskaya, Alexei Valeryevich Semeno, Alexander Vladimirovich Bokov, Atanas Velichkov, Zbigniew Surowiec, Anatoly Vasilyevich Tsvyashchenko   +7 more
doaj   +1 more source

Tempus Fugit: Time Pressure in Risky Decisions [PDF]

, 2011
We study the effects of time pressure on risky decisions for pure gain prospects, pure loss prospects, and mixed prospects involving both gains and losses.
Kocher, Martin G., Pahlke, Julius, Trautmann, Stefan T.   +2 more
core   +2 more sources

Implantable micromechanical parylene-based pressure sensors for unpowered intraocular pressure sensing [PDF]

, 2007
This paper presents the first implantable, unpowered, parylene-based microelectromechanical system (MEMS) pressure sensor for intraocular pressure (IOP) sensing.
Agrawal, Rajat, Chen, Po-Jui, Humayun, Mark S., Meng, Ellis, Rodger, Damien C., Saati, Saloomeh, Tai, Yu-Chong, Varma, Rohit   +7 more
core   +1 more source

Phase transition mechanism and bandgap engineering of Sb2S3 at gigapascal pressures

Communications Chemistry, 2021
Antimonite (Sb2S3) has potential applications for solar energy, but how its layered structure changes under pressure is incompletely understood. Here diamond anvil cell experiments supported by first principles calculations offer a structural explanation
Zhongxun Cui, Kejun Bu, Yukai Zhuang, Mary-Ellen Donnelly, Dongzhou Zhang, Philip Dalladay-Simpson, Ross T. Howie, Jiandong Zhang, Xujie Lü, Qingyang Hu   +9 more
doaj   +1 more source

Room-Temperature Synthesis of Tubular Hexagonal Boron Nitride under Pressure

Crystals, 2023
Hexagonal boron nitride (h-BN) exhibits interesting optical and mechanical properties, including chemical and thermal stability. Extensive techniques have been applied for the realization of h-BN at high temperatures.
Junkai Li, Donghan Jia, Guoliang Niu, Peiyang Mu, Huiyang Gou   +4 more
doaj   +1 more source

Pressure relieving support surfaces (PRESSURE) trial : cost effectiveness analysis [PDF]

, 2006
Objective To assess tire cost effectiveness of alternating pressure mattresses compared with alternating pressure overlays for the prevention of pressure ulcers in patients admitted to hospital.
Cranny, Gillian, Cullum, Nicky, Grp, PRESSURE Trial, Hawkins, Kim, Iglesias, Cynthia, Mason, Su, Nelson, E Andrea, Nixon, Jane, Phillips, Angela, Torgerson, David   +9 more
core   +2 more sources