Results 21 to 30 of about 217,989 (299)

Investigations of Sidewall Passivation Using the Sol-Gel Method on the Optoelectronic Performance for Blue InGaN Micro-LEDs

Micromachines, 2023
The optoelectronic effects of sidewall passivation on micro-light-emitting diodes (Micro-LEDs) were investigated using sol-gel chemical synthesis. Blue InGaN/GaN multi-quantum well (MQW) Micro-LEDs, ranging in size from 20 × 20 μm to 100 × 100 μm and ...
Wenjun Huang, Xiangyu Miao, Zhaojun Liu
doaj   +1 more source

Revealing excellent passivation performance of a novel Cr-alloyed steel rebar in carbonized concrete environment

Journal of Materials Research and Technology, 2023
In this paper, the passivation behavior and corrosion resistance of a novel Cr-alloyed steel rebar in carbonized concrete environments were systematically studied, and its passivation mechanism was also revealed in view of the intrinsic relationship ...
Gongnian Zou, Qiuyue Wang, Guowei Wang, Weiling Liu, Sijie Zhang, Zhiyong Ai, Huande Chen, Han Ma, Dan Song   +8 more
doaj   +1 more source

Passive euthanasia [PDF]

Journal of Medical Ethics, 2005
The idea of passive euthanasia has recently been attacked in a particularly clear and explicit way by an “Ethics Task Force” established by the European Association of Palliative Care (EAPC) in February 2001. It claims that the expression “passive euthanasia” is a contradiction in terms and hence that there can be no such thing.
Garrard, E., Wilkinson, Stephen
openaire   +3 more sources

Understanding the Sidewall Passivation Effects in AlGaInP/GaInP Micro-LED

Nanoscale Research Letters, 2022
The passivation effects of sulfur treatment and Al2O3 passivation for AlGaInP/GaInP red micro-light-emitting-diodes (LEDs) were investigated in terms of the external quantum efficiency (EQE) and the current density showing the peak EQE (J EQE, peak).
Juhyuk Park, Woojin Baek, Dae-Myeong Geum, Sanghyeon Kim   +3 more
doaj   +1 more source

Understanding of Molecular Contribution of Quinhydrone/Methanol Organic Passivation for Improved Minority Carrier Lifetime on Nanostructured Silicon Surface

Applied Sciences, 2019
In this report, we present a study of the quinhydrone/methanol (QHY/MeOH) organic passivation technique for a silicon (Si) surface. The roles of p-benzoquinone (BQ) and hydroquinone (HQ), which make up QHY, in controlling the uniformity and coverage of ...
Jea-Young Choi
doaj   +1 more source

Sealing Effects of Silica Sol Modified Waterborne Acrylic Resin on Chromium Trivalent Passivation Film of Galvanized Steel

Cailiao gongcheng, 2018
In order to improve the corrosion resistance of the trivalent chromium passivation film on galvanized steel, the effects of silica sol modified waterborne acrylic resin on the passivation film were studied.
SUN Wei, ZHU Li-qun, LI Wei-ping, LIU Hui-cong   +3 more
doaj   +1 more source

Increased amplification efficiency of microchip-based PCR by dynamic surface passivation

BioTechniques, 2004
Surface passivation is critical for effective PCR using silicon-glass chips. We tested a dynamic polymer-based surface passivation method. Polyethylene glycol 8000 (PEG 8000) or polyvinylpyrrolidone 40 (PVP-40) applied at 0.75% (w/v) in the reaction ...
Xing Jian Lou, Nicholas J. Panaro, Peter Wilding, Paolo Fortina, Larry J. Kricka   +4 more
doaj   +1 more source

The Development of Carbon/Silicon Heterojunction Solar Cells through Interface Passivation

Advanced Science
Passivating contactsin heterojunction (HJ) solar cells have shown great potential in reducing recombination losses, and thereby achieving high power conversion efficiencies in photovoltaic devices.
Bingbing Chen, Xuning Zhang, Qing Gao, Dehua Yang, Jingwei Chen, Xuan Chang, Cuili Zhang, Yuhua Bai, Mengnan Cui, Shufang Wang, Han Li, Benjamin S. Flavel, Jianhui Chen   +12 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Organic Passivation‐Enhanced Ferroelectricity in Perovskite Oxide Films

Advanced Science
Perovskite oxides and organic–inorganic halide perovskite materials, with numerous fascinating features, have been subjected to extensive studies. Most of the properties of perovskite materials are dependence on their ferroelectricity that denoted by ...
Hao Meng, Bingbing Chen, Xiuhong Dai, Jianxin Guo, Wenheng Li, Yuhua Bai, Xuan Chang, Xuning Zhang, Jingwei Chen, Qing Gao, Baoting Liu, Jianhui Chen   +11 more
doaj   +1 more source