Results 31 to 40 of about 21,384 (312)

Blueshift of the surface plasmon resonance in silver nanoparticles studied with EELS

Nanophotonics, 2013
We study the surface plasmon (SP) resonance energy of isolated spherical Ag nanoparticles dispersed on a silicon nitride substrate in the diameter range 3.5–26 nm with monochromated electron energy-loss spectroscopy.
Raza Søren, Stenger Nicolas, Kadkhodazadeh Shima, Fischer Søren V., Kostesha Natalie, Jauho Antti-Pekka, Burrows Andrew, Wubs Martijn, Mortensen N. Asger   +8 more
doaj   +1 more source

On the nature of Seyfert galaxies with high [OIII]5007 blueshifts [PDF]

, 2008
We have studied the properties of Seyfert galaxies with high [OIII]5007 blueshifts (`blue outliers'), originally identified because of their strong deviation from the M_BH - sigma relation of normal, narrow-line Seyfert 1 (NLS1) and broad-line Seyfert 1 (
Binette L., Blandford R., Boller T., Boroson T. A., Brinkmann W., Campanelli M., D. Xu, Elvis M., Erkens U., Fabian A., Fedorenko V. N., H. Zhou, Holt J., Komossa S., Konigl A., L. Binette, Miller P., Penston M. S., S. Komossa, Silk J., T. Storchi‐Bergmann, Terlevich E., Veron M. P., Voges W.   +23 more
core   +3 more sources

Photoluminescence studies of individual and few GaSb/GaAs quantum rings

AIP Advances, 2014
We present optical studies of individual and few GaSb quantum rings embedded in a GaAs matrix. Contrary to expectation for type-II confinement, we measure rich spectra containing sharp lines.
M. P. Young, C. S. Woodhead, J. Roberts, Y. J. Noori, M. T. Noble, A. Krier, E. P. Smakman, P. M. Koenraad, M. Hayne, R. J. Young   +9 more
doaj   +1 more source

Synthesis of SiC/SiO2 core–shell nanowires with good optical properties on Ni/SiO2/Si substrate via ferrocene pyrolysis at low temperature

Scientific Reports, 2021
In this study, the high-density SiC/SiO2 core–shell nanowires were synthesized on the nickel coated SiO2 (100 nm)/Si substrate by chemical vapor deposition (CVD) method with ferrocene precursor at temperature 1000 °C compared to previous studies (1300 ...
Bo-Yu Chen, Chong-Chi Chi, Wen-Kuang Hsu, Hao Ouyang   +3 more
doaj   +1 more source

Prediction of the Bandgap of a Core-Shell Microsphere via Light Intensity Fluctuations

International Journal of Photoenergy, 2011
It has been experimentally observed that in the case of microspheres irradiated by light, the absorption wavelength shift occurs, known as the blueshift, with changing shell materials (i.e., by decreasing the refractive index of the shell).
Moon Kyu Choi, Youngjin Choi
doaj   +1 more source

Photoluminescence Study of the Interface Fluctuation Effect for InGaAs/InAlAs/InP Single Quantum Well with Different Thickness

Nanoscale Research Letters, 2017
Photoluminescence (PL) is investigated as a function of the excitation intensity and temperature for lattice-matched InGaAs/InAlAs quantum well (QW) structures with well thicknesses of 7 and 15 nm, respectively. At low temperature, interface fluctuations
Ying Wang, Xinzhi Sheng, Qinglin Guo, Xiaoli Li, Shufang Wang, Guangsheng Fu, Yuriy I. Mazur, Yurii Maidaniuk, Morgan E. Ware, Gregory J. Salamo, Baolai Liang, Diana L. Huffaker   +11 more
doaj   +1 more source

SOAP 2.0: A tool to estimate the photometric and radial velocity variations induced by stellar spots and plages

, 2014
This paper presents SOAP 2.0, a new version of the SOAP code that estimates in a simple way the photometric and radial velocity variations induced by active regions.
Boisse, I ., Dumusque, X., Santos, N. C.
core   +6 more sources

Ground state and excitation dynamics in Ag doped helium clusters [PDF]

, 2001
We present a quantum Monte Carlo study of the structure and energetics of silver doped helium clusters AgHe$_n$ for $n$ up to 100. Our simulations show the first solvation shell of the Ag atom to be composed by roughly 20 He atoms, and to possess a ...
Gabriele Morosi, Jakubek Z. J., Maria Carola Colombo, Massimo Mella   +3 more
core   +2 more sources

Blueshifted forbidden lines in T Tauri stars [PDF]

Publications of the Astronomical Society of the Pacific, 1983
The authors report observational evidence for a predominance of blueshifts among the radial velocities of the forbidden lines in the spectra of T Tauri stars. The similarities of the velocity distributions and spectra suggests a related physical nature of the H-H objects and the unresolved forbidden-line-producing gas volumes around T Tauri stars.
I. Jankovics, I. Appenzeller, J. Krautter   +2 more
openaire   +1 more source

Phenyl Derivatives Modulate the Luminescent Properties and Stability of CzBTM-Type Radicals

Molecules
The distinctive electron structures of luminescent radicals offer considerable potential for a diverse array of applications. Up to now, the luminescent properties of radicals have been modulated through the introduction of electron-donating substituents,
Quanquan Gou, Jiahao Guan, Lintao Zhang, Xin Ai   +3 more
doaj   +1 more source