Results 121 to 130 of about 17,119 (265)
Zhongguo dianliUnder the "dual carbon" goal, the ultra-high voltage (UHV) AC project, with its advanced technological means, will play a greater role in consuming clean energy and reducing transmission losses. Considering that there is relatively little research on the
Shuo WANG +6 more
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Rapid Lab‐Based In Situ Monitoring of Germanium Multiple Quantum Wells Interdiffusion
Advanced Physics Research, EarlyView.This study emphasizes important insights into thermally activated diffusion control in Ge/SiGe multiple quantum wells for future design of high‐performance group‐IV optoelectronic devices. A particular fast data acquisition is achieved by in situ X‐ray diffraction and the influence of interdiffusion on the optical properties is presented by ...
Diana Ryzhak +8 more
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, 2008 The main focus of the thesis is on the actuator, which is used for nanopositioning of laser beam in-site AFM (Atomic Force Microscopy). The appropriate shape of supply pulse and frequencies were searched and optimized.
Pavelec, Jiří
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Carbon Energy, EarlyView.Electrode state‐of‐charge heterogeneity critically limits lithium‐ion battery performance and safety. This Perspective highlights iSCAT, a powerful optical technique for real‐time, nanoscale visualization of lithium dynamics within single particles. By revealing the origins of heterogeneity, iSCAT enables rational electrode design.
Hong Zhao +4 more
wiley +1 more source
, 2000 利用SiH_4和GeH_4作为源气体，对UHV/CVD生长Si_(1-x)Ge_x/Si外延层的表面反应机理进行了研究，通过TPD、RHEED等实验观察了Si(100)表面SiH_4的饱和吸附、热脱附过程，得出SiH_4的分解应该是每个SiH_4分子的4个H原子全部都吸附到了Si表面，SiH_4的吸附率正比于表面空位的4次方，并分析了GeH_4的表面吸附机制。在此基础上建立了UHV/CVD生长Si_(1-x)Ge_x/Si的表面反应动力学模型,利用模型对实验结果进行了模拟 ...
黄昌俊 +7 more
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Chemistry – A European Journal, EarlyView.Sr doping regulates oxygen exchange and methane activation in LaFeO3, suppressing nonselective CH4 cracking and coke formation during CL‐DRM. La0.7Sr0.3FeO3 provides the optimal balance, delivering ∼40% CH4 conversion, an H2/CO ratio of 2, and >95% carbon balance.
Ganesh Jabotra +8 more
wiley +1 more source
Recent advances in UHV techniques for particle accelerators
, 1995 The ultrahigh vacuum (UHV) requirements for storage rings and accelerators, and the development of the science and technology of UHV for particle accelerators and magnetic fusion devices have been recently reviewed by N.B. Mistry and H.F.
Rao, M. G.
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Journal of Innovation & KnowledgeUltra-high voltage (UHV) transmission projects are a cornerstone of China’s supply-side energy reforms, enhancing the national power system’s balance, efficiency, and resilience.
Ting Chen, Qiuwang Cheng
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Chemistry – A European Journal, EarlyView.We propose a novel displacement‐assisted approach for temperature‐programmed desorption (TPD), allowing for the detection of reactive intermediates of on‐surface reactions. We demonstrate the approach by investigating the temperature‐dependent ring fusion reactions (cyclodehydrogenations) of tetraphenylporphyrin on Cu(111), revealing the quantitative ...
Simon Steinbach +4 more
wiley +1 more source
Experimental methods in chemical engineering: Temperature‐programmed desorption—TPD
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Temperature‐programmed desorption (TPD) characterizes the surface active sites of functional materials, such as adsorbents (metal hydrides, porous carbons, zeolites, metal–organic frameworks, for example) and catalysts. Solids surfaces are pre‐treated to remove moisture, contaminants, and previously adsorbed species, then a probe molecule (NH3$
Daniel A. Valdivieso‐Vera +2 more
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