Results 21 to 30 of about 51,913 (299)

Precision EDM of Micron-Scale Diameter Hole Array Using in-Process Wire Electro-Discharge Grinding High-Aspect-Ratio Microelectrodes

Micromachines, 2020
Micro-electrical discharge machining (micro-EDM) is a good candidate for processing micro-hole arrays, which are critical features of micro-electro-mechanical systems (MEMS), diesel injector nozzles, inkjet printheads and turbine blades, etc.
Zhixiang Zou, Zhongning Guo, Qinming Huang, Taiman Yue, Jiangwen Liu, Xiaolei Chen   +5 more
doaj   +1 more source

Micro-hole and strip plate-based photosensor [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2007
Abstract The performance of a new VUV photosensor, based on an micro-hole and strip plate (MHSP) electron multiplier with a CsI photocathode deposited on its top electrode, is described. This photosensor presents gains above 104 when operating in an Ar–5%Xe gas mixture at 1 atm.
Freitas, E. D. C., Veloso, J. F. C. A., Breskin, A., Chechik, R., Amaro, F. D., Ferreira, L. F. Requicha, Maia, J. M., Santos, J. M. F. dos   +7 more
openaire   +2 more sources

MHSP in reversed-biased operation mode for ion blocking in gas-avalanche multipliers [PDF]

, 2005
We present recent results on the operation of gas-avalanche detectors comprising a cascade of gas electron multipliers (GEMs) and Micro-Hole and Strip Plates (MHSPs) multiplier operated in reversed-bias (R-MHSP) mode.
A. Breskin, A.V. Lyashenko, Anderson, Bachmann A. Bressan, Biagi, Bondar, Breskin, Breskin, Chechik, Chechik, Colas, Edmends, F.D. Amaro, Friedrich, J.F.C.A. Veloso, J.M. Maia, J.M.F. dos Santos, M. Bouianov, Maia, Maia, Mormann, Némethy, O. Bouianov, R. Chechik, Roth, Sauli, Sauli, Sauli, Veenhof, Veloso   +29 more
core   +2 more sources

Wire Electrochemical Machining with Pulsating Radial Electrolyte Supply and Preparation of Its Tube Electrode with Micro-Holes

Applied Sciences, 2020
Wire electrochemical machining (WECM) has great advantages and potential for fabricating parts with ruled surfaces made of difficult-to-machine materials.
Chongchang Xu, Xiaolong Fang, Zhao Han, Di Zhu   +3 more
doaj   +1 more source

Efficient ion blocking in gaseous detectors and its application to gas-avalanche photomultipliers sensitive in the visible-light range [PDF]

, 2008
A novel concept for ion blocking in gas-avalanche detectors was developed, comprising cascaded micro-hole electron multipliers with patterned electrodes for ion defocusing.
A. Breskin, A. Lyashenko, Balcerzyk, Bondar, Breskin, Buzulutskov, Escada, F.D. Amaro, Fraenkel, Hagstrum, J.F.C.A. Veloso, J.M.F. dos Santos, Ketzer, Lyashenko, Mörmann, Piuz, R. Chechik, Singh, Veloso   +18 more
core   +2 more sources

Micro-Hole and Strip Plate (MHSP) operation in CF4 [PDF]

, 2007
The Micro-Hole and Strip Plate (MHSP) is a hybrid electron multiplier which combines the working principles of a Gas Electron Multiplier (GEM) and a Micro-Strip Gas Counter (MSGC).
Luz, H. Natal da, Mir, J. A., Rhodes, N. J., Santos, J. M. F. dos, Schooneveld, E. M., Veloso, J. F. C. A.   +5 more
core   +1 more source

Investigation on Cutting Performance of Micro-Textured Cutting Tools

Micromachines, 2019
This paper explores the influence of micro textures on cutting performance of polycrystalline cubic boron nitride (PCBN) tools from two aspects, that is, tool wear and machined surface roughness.
Qinghua Li, Chen Pan, Yuxin Jiao, Kaixing Hu   +3 more
doaj   +1 more source

Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode

Micromachines, 2020
The instability of machining process caused by the difficulty of the electrolyte refresh in electrochemical micromachining (EMM) of micro through-hole has been an unsolved problem. Thus, this paper investigates the electrochemical micromachining of micro
Baohui Liu, Hang Zou, Haixuan Luo, Xiaoming Yue   +3 more
doaj   +1 more source

Gravity coupling from micro-black holes [PDF]

, 2000
Recently much work has been done in lowering the Planck threshold of quantum gravitational effects (sub-millimeter dimension(s), Horava-Witten fifth dimension, strings or branes low energy effects, etc.).
Banks, Carr, Casadio, Duff, Fabio Scardigli, Halzen, Hawking, Horava, Landau, MacGibbon, Scardigli, Scardigli   +11 more
core   +3 more sources

Generalized Uncertainty Principle in Quantum Gravity from Micro-Black Hole Gedanken Experiment [PDF]

, 1999
We review versions of the Generalized Uncertainty Principle (GUP) obtained in string theory and in gedanken experiments carried out in Quantum Gravity. We show how a GUP can be derived from a measure gedanken experiment involving micro-black holes at the
Douglas, Fabio Scardigli, Scardigli
core   +2 more sources