Results 81 to 90 of about 890,829 (194)

Spontaneous two photon emission from a single quantum dot

, 2011
Spontaneous two photon emission from a solid-state single quantum emitter is observed. We investigated photoluminescence from the neutral biexciton in a single semiconductor quantum dot coupled with a high Q photonic crystal nanocavity.
Arakawa, Y., Iwamoto, S., Kumagai, N., Ota, Y.   +3 more
core   +1 more source

Photoluminescence emission and Raman enhancement in TERS: an experimental and analytic revisiting

Nanophotonics
An analytic model is used to calculate the Raman and fluorescence enhancement of a molecule in between two closely spaced gold nanospheres. Instead of using the conventional approach that only the dipolar plasmonic mode is considered, we calculate the ...
Chen Yu-Ting, Liu Quan, Schneider Felix, Brecht Marc, Meixner Alfred J., Zhang Dai   +5 more
doaj   +1 more source

Electron focusing, mode spectroscopy and mass enhancement in small GaAs/AlGaAs rings

, 1992
A new electron focusing effect has been discovered in small single and coupled GaAs/AlGaAs rings. The focusing in the single ring is attributed solely to internal orbits. The focusing effect allows the ring to be used as a small mass spectrometer.
C. W. J. Beenakker, D. A. Poole, D. A. Wharam, D. A. Wharam, D. van der Marel, D. Weiss, G. Timp, H. U. Baranger, H. van Houten, J. B. Ford, J. B. Ford, J. E. Mooij, J. J. Thompson, J. Liu, J. M. Hong, K. F. Berggren, K. F. Berggren, K. F. Berggren, K. Ismail, K. Ismail, K. T. Bainbridge, K. Y. Lee, K. Y. Lee, P. Exner, S. B. Kaplan, S. E. Laux, S. E. Laux, S. Katsumoto, S. Washburn, S. Washburn, T. Geisel, V. S. Tsoi, Yu. V. Sharvin   +32 more
core   +1 more source

Extraordinary Light-Trapping Enhancement in Silicon Solar Cell Patterned with Graded Photonic Super-Crystals

Photonics, 2017
Light-trapping enhancement in newly discovered graded photonic super-crystals (GPSCs) with dual periodicity and dual basis is herein explored for the first time.
Safaa Hassan, David Lowell, Murthada Adewole, David George, Hualiang Zhang, Yuankun Lin   +5 more
doaj   +1 more source

Multiwave Interactions in Turbulent Jets [PDF]

Nonlinear wave-wave interactions in turbulent jets were investigated based on the integrated energy of each scale of motion in a cross section of the jet.
Mankbadi, Reda R.
core   +1 more source

Optimal mode matching in cavity optomagnonics

, 2019
Inelastic scattering of photons is a promising technique to manipulate magnons but it suffers from weak intrinsic coupling. We theoretically discuss an idea to increase optomagnonic coupling in optical whispering gallery mode cavities, by generalizing ...
Bauer, Gerrit E. W., Blanter, Yaroslav M., Rameshti, Babak Zare, Sharma, Sanchar   +3 more
core   +1 more source

Raman Scattering Enhancement through Pseudo-Cavity Modes

Nanomaterials
Raman spectroscopy plays a pivotal role in spectroscopic investigations. The small Raman scattering cross-section of numerous analytes, however, requires enhancement of the signal through specific structuring of the electromagnetic and morphological properties of the underlying surface.
Vincenzo Caligiuri, Antonello Nucera, Aniket Patra, Marco Castriota, Antonio De Luca   +4 more
openaire   +3 more sources

Resonant Enhancement of Coherent Phonons in Carbon Nanotubes Observed with Sub-10fs Time Resolution

EPJ Web of Conferences, 2013
Using wavelength-resolved pump-probe spectroscopy with a sub-10-fs laser, we investigated resonant enhancement of radial breathing mode and G-mode coherent phonons in carbon nanotubes (CNTs), and successfully distinguished the electronic states of CNTs ...
Yanagi K., Takeda J., Tahara K., Katayama I., Tang J., Kitajima M.   +5 more
doaj   +1 more source

Design and analysis of 10 nm T-gate enhancement-mode MOS-HEMT for high power microwave applications

Journal of Science: Advanced Materials and Devices, 2019
In this work, we propose a novel enhancement-mode GaN metal-oxide-semiconductor high electron mobility transistor (MOS-HEMT) with a 10 nm T-gate length and a high-k TiO2 gate dielectric.
Touati Zine-eddine, Hamaizia Zahra, Messai Zitouni   +2 more
doaj   +1 more source

A Delay-Cell-Controlled VCO Design for Unipolar Single-Gate Enhancement-Mode TFT Technologies. [PDF]

Micromachines (Basel), 2022
Li B, Wei S, Zhao M, Chen R, Wu Z, Xu Y.
europepmc   +1 more source