Results 11 to 20 of about 409,231 (284)

Disc loss and renewal in A0535+26 [PDF]

, 1999
This paper presents observations of the Be/X-ray binary system A0535+26 revealing the first observed loss of its circumstellar disc, demonstrated by the loss of its JHK infrared excess and optical/IR line emission. However optical/IR spectroscopy reveals
Alonso, Clark, Clark, Clark, Clark, Coe, Hayakawa, Huang, I. A. Steele, J. Fabregat, Janot-Pacheco, M. J. Coe, Manfroid, N. J. Haigh, Roche, Rosenberg, Steele, Wang   +17 more
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Room temperature emission spectroscopy of GeSn waveguides under optical pumping

AIP Advances, 2022
Waveguides were fabricated from highly n-type doped GeSn layers with Sn content at 5.4%–6.2% and grown on Ge-buffered Si substrates. The waveguides were optically pumped using a 976 nm continuous-wave laser, and the waveguide emission spectrum was ...
Z. Li, Y. Zhao, J. D. Gallagher, D. Lombardo, A. Sarangan, Imad Agha, J. Kouvetakis, J. Menéndez, J. Mathews   +8 more
doaj   +1 more source

Construção de um espectrógrafo de projeção e sua utilização em demonstrações de espectroscopia óptica Construction of a projection spectrograph and its use in optical spectroscopy classrooms demonstrations

Química Nova, 2008
This article describes a projection spectrograph for use in optical spectroscopy classrooms demonstrations. The apparatus is based on an overhead projector and permits the visualization of several phenomena such as, light dispersion by diffraction ...
Eduardo Ribeiro de Azevedo, Luiz Antônio de Oliveira Nunes   +1 more
doaj   +1 more source

Six months of mass outflow and inclined rings in the ejecta of V1494 Aql [PDF]

, 2005
V1494 Aql was a very fast nova which reached a visual maximum of mv≃ 4.0 by the end of 1999 December 3. We report observations from 4 to 284 d after discovery, including submillimetre- and centimetre-band fluxes, a single MERLIN image and optical ...
I. Heywood, R. J. Ivison, S. P. S. Eyres, T. J. O'Brien, T. W. B. Muxlow, V. G. Elkin   +5 more
core   +1 more source

CdZnO coated film: A material for photovoltaic applications

Results in Physics, 2018
The present study reports structural and optical parameters of wide band gap oxide thick film prepared by screen-printing followed by sintering route. Characterization of the samples was carried out with UV-spectroscopy, XRD, SEM, and Photoluminous study.
R.A. Zargar, M.A. Bhat, H.A. Reshi, S.D. Khan   +3 more
doaj   +1 more source

Advanced in-situ electron-beam lithography for deterministic nanophotonic device processing [PDF]

, 2015
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Review of Scientific Instruments 86, 073903 (2015) and may be found at https://doi.org/10.1063/1 ...
Gschrey, Manuel, Heindel, Tobias, Kaganskiy, Arsenty, Reitzenstein, Stephan, Rodt, Sven, Schlehahn, Alexander, Schmidt, Ronny, Schulze, Jan-Hindrik, Strittmatter, André   +8 more
core   +1 more source

Gaseous Material Orbiting the Polluted, Dusty White Dwarf HE1349-2305 [PDF]

, 2012
We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE1349-2305. Optical spectroscopy reveals weak CaII infrared triplet emission indicating that metallic gas debris orbits and is accreted by the
Bessel, Brinkworth, Brinkworth, Debes, Dufour, Dufour, Dufour, Dufour, Epchtein, Farihi, Farihi, Farihi, Girven, Gänsicke, Gänsicke, Jura, Jura, Jura, Klein, Klein, Martin, Melis, Melis, Morrissey, Skrutskie, Zuckerman, Zuckerman   +26 more
core   +2 more sources

Modular Ceramic-Polymeric Device for Analysis of Selected Elements in Liquid Using Microplasma

Proceedings, 2018
Miniaturization of devices for analysis of chemical composition is being still developed. In this article we present a portable device with a microplasma excitation source.
Tomasz Matusiak, Jan Macioszczyk, Krzysztof Świderski, Piotr Jamróz, Paweł Pohl, Leszek Golonka   +5 more
doaj   +1 more source

The AGN and Gas Disk in the Low Surface Brightness Galaxy PGC045080 [PDF]

, 2007
We present radio observations and optical spectroscopy of the giant low surface brightness (LSB) galaxy PGC 045080 (or 1300+0144). PGC 045080 is a moderately distant galaxy having a highly inclined optical disk and massive HI gas content. Radio continuum
Das, M., Kantharia, N., McGaugh, S. S., Prabhu, T. P., Ramya, S., Vogel, S. N.   +5 more
core   +2 more sources

Cascaded exciton emission of an individual strain-induced quantum dot [PDF]

, 2009
Single strain-induced quantum dots are isolated for optical experiments by selective removal of the inducing InP islands from the sample surface.
Finley, J. J., Krenner, H. J., Laucht, A., Lipsanen, H., Mattila, M., Riikonen, J., Schülein, F. J. R., Sopanen, M., Wixforth, A.   +8 more
core   +3 more sources