Results 111 to 120 of about 187,352 (298)

New driving parameters for diamond deposition reactors: pulsed mode versus continuous mode

Materials Research, 2003
Experimental investigation and modeling of pulsed H2/CH4 plasmas used for diamond deposition are presented. Two plasma configurations are studied : a 2.45 GHz microwave cavity configuration and a 915 MHz surface-wave configuration.
Alix Gicquel, Khaled Hassouni, Guillaume Lombardi, Xavier Duten, Antoine Rousseau   +4 more
doaj   +1 more source

Two-frequency heating technique at the 18 GHz electron cyclotron resonance ion source of the National Institute of Radiological Sciences

, 2014
The two-frequency heating technique was studied to increase the beam intensities of highly charged ions provided by the high-voltage extraction configuration (HEC) ion source at the National Institute of Radiological Sciences (NIRS).
Biri, S., Drentje, A. G., Kato, Y., Kitagawa, A., Muramatsu, M., Rácz, R., Sasaki, N., Takasugi, W., Yano, K.   +8 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

Advanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt, Katja Lange, Robert Göckeritz, Erik Grunwald, Angelika Hähnel, Alexander Müller, Volker Naumann, Sistan Rasuli, Wolfram Münchgesang, Bruno G. Pollet, Kerstin Witte‐Bodnar, Klemens Ilse   +11 more
wiley   +1 more source

Microwave heating of the lower ionosphere [PDF]

, 1980
Changes in the properties of the lower ionosphere due to ohmic heating of the plasma by the solar power satellite (SPS) microwave power beam are considered.
Meltz, G., Nighan, W. L.
core   +1 more source

Microwave Discharge Ion Sources

, 2014
This chapter describes the basic principles, design features and characteristics of microwave discharge ion sources. A suitable source for the production of intense beams for high-power accelerators must satisfy the requirements of high brightness ...
Celona, L.
core   +1 more source

High‐Power Rapid Laser‐Induced Synthesis of Multi‐functional Cobalt Metal‐Organic Framework With an Unprecedented Synthesis Efficiency

Advanced Materials Technologies, EarlyView.
Laser‐assisted synthesis enables rapid (within 1 h) and high‐yield (≥90%) production of Co‐MOFs with mesoporous structures, tunable magnetic and optical properties, and efficient adsorption of N2, CH4, and CO2 for low‐energy gas separation. DFT calculations elucidate the electronic structure and adsorption behavior.
Saliha Mutlu, Bülend Ortaç, Ali Karatutlu, Taylan Gorkan, Engin Durgun, Dilek Soyler, Saniye Soylemez, Jelena Lillepäg, Volkan Filiz, Nergis Arsu, Sevil Savaskan Yilmaz   +10 more
wiley   +1 more source

Green reverse water gas shift reaction achieved by microwave-induced plasma

Green Chemistry Letters and Reviews
The reverse water-gas shift (RWGS) reaction is a promising route to produce syngas that is a valuable precursor for synthetic fuel production. However, this reaction is possible only using catalysts.
Balazs Peter Kiss, Zsolt Dobo, George Kaptay   +2 more
doaj   +1 more source

Control of plasma profile in microwave discharges via inverse-problem approach

AIP Advances, 2013
In the manufacturing process of semiconductors, plasma processing is an essential technology, and the plasma used in the process is required to be of high density, low temperature, large diameter, and high uniformity.
Yasuyoshi Yasaka, Naoki Tobita, Akihiro Tsuji   +2 more
doaj   +1 more source

Microwave Generation of Harmonics in Plasma Resonance

Kakuyūgō kenkyū, 1962
By taking account of plasma oscillations and a spatial variation of electron density and solving the nonlinear Boltzmann and the Poisson equations by the perturbation method, the harmonic components of the distribution function of electrons, the intensity of inner electric field of plasma and the discharge current density are found in the case of ...
Moriyama, M., Sumi, Masao
openaire   +3 more sources