Results 61 to 70 of about 353,031 (193)

Further progress in ion back-flow reduction with patterned gaseous hole-multipliers

, 2007
A new idea on electrostatic deviation and capture of back-drifting avalanche-ions in cascaded gaseous hole-multipliers is presented. It involves a flipped reversed-bias Micro-Hole & Strip Plate (F-R-MHSP) element, the strips of which are facing the drift
, A Breskin, A V Lyashenko, A. Buzulutskov ., A. Lyashenko ., D. Mörmann, F D Amaro, J F C A Veloso, J M F Dos Santos, J.F.C.A. Veloso ., R Chechik   +10 more
core   +1 more source

EFFECTS OF SURFACE MICROMORPHOLOGY CHARACTERISTICS ON FATIGUE PERFORMANCE OF DOUBLE COLD EXPANDED HOLE

Jixie qiangdu, 2022
Established the double cold expansion simulation model, and investigated the effects of surface micromorphology characteristics on the fatigue performance of double cold expanded holes.
JIANG TingYu, WANG Yang, YANG Zhen, WANG Peng, WAN ZhiCheng, ZHANG QuanLi, SU HongHua   +6 more
doaj  

Fourier Analysis of the BTZ Black Hole [PDF]

, 2009
In this paper we extend our previous work regarding the role of the Fourier transformation in bulk to boundary mappings to include the BTZ black hole. We follow standard procedures for modifying Fourier Transformations to accommodate quotient spaces and ...
Tolfree, Ian M.
core  

Influence of assisted gases and parameters on quasi-continuous wave laser drilling of high aspect ratio micro-holes in SiCf/SiC composite

Journal of Materials Research and Technology
In the present research, a coaxial gas assisted Quasi-continuous wave (QCW) laser was applied to machine micro-holes with high aspect ratios in SiCf/SiC composites.
Shanshan Chen, Zenggan Bian, Zhibin Liu, Yue Cao, Bin Wang, Wenwu Zhang, Liyuan Sheng   +6 more
doaj   +1 more source

A Parallax Distance to the Microquasar GRS 1915+105 and a Revised Estimate of its Black Hole Mass

, 2014
Using the Very Long Baseline Array, we have measured a trigonometric parallax for the micro quasar GRS 1915+105, which contains a black hole and a K-giant companion. This yields a direct distance estimate of 8.6 (+2.0,-1.6) kpc and a revised estimate for
Dhawan, V., McClintock, J. E., Narayan, R., Reid, M. J., Remillard, R. A., Steeghs, D., Steiner, J. F.   +6 more
core   +1 more source

Unintentional high density p-type modulation doping of a GaAs/AlAs core-multi-shell nanowire [PDF]

, 2014
Achieving significant doping in GaAs/AlAs core/shell nanowires (NWs) is of considerable technological importance but remains a challenge due to the amphoteric behavior of the dopant atoms.
A. Bertoni, A. Kretinin, A. Mitioglu, Adachi S., Algra R. E., Assali S., Bertoni A., Bimberg D., Borghs G., Butov L. V., Casadei A., Cui Y., Cui Y., D. K. Maude, Duan X., Dufouleur J., Estrin Y., Ferreira A. C., Fickenscher M., Fishman G., Fontcuberta i Morral A., Funk S., G. Goldoni, Glasberg S., Gunnarsson O., Hadas Shtrikman, Harper P. G., Heiss M., Hilse M., Hocevar M., Hu J., I. Breslavetz, J. Jadczak, Jahn U., Klitzing K. v., Krogstrup P., Kunzel H., Levinshtein M., Lieber C. M., Lu W., M. Royo, Meynadier M. H., Musin I. R., P. Kossacki, P. Plochocka, Pashley M. D., Pavesi L., Petroff P. M., Pistol M.-E., Plochocka P., Royo M., Rudolph D., Sager D., Shtrikman H., Shtrikman H., Skolnick M. S., Spirkoska D., Spirkoska D., T. Smolenski, Tans S. J., Thelander C., Titova L. V., Tokumitsu E., Tsui D. C., Walck S. N.   +64 more
core   +5 more sources

General Relativistic Simulations of Jet Formation in a Rapidly Rotating Black Hole Magnetosphere

, 1999
To investigate the formation mechanism of relativistic jets in active galactic nuclei and micro-quasars, we have developed a new general relativistic magnetohydrodynamic code in Kerr geometry.
Blandford R. D., Cui W., David L. Meier, Iwasawa K., Kazunari Shibata, Lovelace R. V. E., Shibata K., Shinji Koide, Takahiro Kudoh, Yokosawa M., Yokosawa M.   +10 more
core   +1 more source

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

Acoustic black hole effect enhanced micro-manipulator

Microsystems & Nanoengineering
AbstractMicroparticle manipulation is a critical concern across various fields including microfabrication, flexible electronics and tissue engineering. Acoustic-activated sharp structures have been designed as simple and flexible tools to manipulate microparticles with their good compatibility, fast response, and broad tunability.
Qiu Yin, Haoyong Song, Zhaolong Wang, Zhichao Ma, Wenming Zhang   +4 more
openaire   +3 more sources

Approaching the event horizon: 1.3mm VLBI of SgrA*

, 2008
Advances in VLBI instrumentation now allow wideband recording that significantly increases the sensitivity of short wavelength VLBI observations. Observations of the super-massive black hole candidate at the center of the Milky Way, SgrA*, with short ...
Bower G C, Doeleman S S, Falcke H, Ghez A M, Maoz E, Marrone D, Noble S C, Reid M J, Sheperd Doeleman, Yusef-Zadeh F   +9 more
core   +1 more source