Results 251 to 260 of about 18,719 (306)

Surface roughness and backscattering

Optics Letters, 1996
Surface roughness is normally considered to be the main cause of attenuation in intergrated-optics glass waveguides. Previous analyses have concentrated on scattering of light into the radiation field; in fact, depending on the roughness length scale, scattering can be predominantly in the backward direction, raising the question of how important the ...
F, Ladouceur, L, Poladian
openaire   +2 more sources

An Overview on Backscatter Communications

Journal of Communications and Information Networks, 2019
As a key low-power communication technique, backscatter communications exploits the reflected or backscattered signals to transmit data, where the backscattered signals can be the reflection of ambient radio frequency (RF) signals, the RF signals from the dedicated carrier emitter or the signal photons in the non-classical quantum entangled pairs, etc.
Jinping Niu, Geoffrey Ye Li
openaire   +1 more source

Coherent backscattering of neutrons

Physical Review B, 1987
We study the effects of multiple scattering on the elastic incoherent cross section of neutron backscattering. The cross section is found to be enhanced within a narrow cone centered around the backscattering direction. An antienhancement of intensities is predicted, provided that spin-flip scattering is dominant.
openaire   +2 more sources

Backscatter

IEEE Microwave Magazine, 2007
  +4 more sources

Cognitive backscatter metasurface

2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
We study a novel spectrum-sharing paradigm for multicarrier cognitive radio (CR) networks, where the conventional primary system employs an orthogonal frequency-division multiplexing (OFDM) modulation scheme, whereas the secondary system is represented by an Internet of Things (IoT) metasurface that concurrently transmits data to a secondary receiver ...
Verde, Francesco, Galdi, Vincenzo
openaire   +2 more sources

Channeling and Backscatter Imaging

2016
While the default imaging mode in HIM uses secondary electrons, backscattered helium or neon contains valuable information about the sample composition and structure. In this chapter, we will discuss how backscattered helium can be used to obtain information about buried structures and provide qualitative elemental contrast.
Hlawacek, Gregor, Veligura, Vasilisa, van Gastel, Raoul, Poelsema, Bene   +3 more
openaire   +2 more sources

Backscattering from a randomly rough dielectric surface

IEEE Transactions on Geoscience and Remote Sensing, 1992
A. Fung, Z. Li, Kun Shan Chen
semanticscholar   +1 more source

Algorithms for the rapid simulation of Rutherford backscattering spectra

, 1985
L. Doolittle
semanticscholar   +1 more source

Coherent backscattering of Raman light

Nature Photonics, 2017
B. Fazio, A. Irrera, S. Pirotta, C. D'Andrea, S. Del Sorbo, Maria José Lo Faro, P. Gucciardi, M. Iatì, R. Saija, M. Patrini, P. Musumeci, Cirino Salvatore Vasi, D. Wiersma, M. Galli, F. Priolo   +14 more
semanticscholar   +1 more source

Backscatter

IEEE Microwave Magazine, 2006
  +4 more sources