Results 21 to 30 of about 11,595,150 (357)

Virtual chromoendoscopy by using optical enhancement improves the detection of Barrett's esophagus-associated neoplasia.

Gastrointestinal Endoscopy, 2019
BACKGROUND AND AIMS The Seattle protocol for endoscopic Barrett's esophagus (BE) surveillance samples a small portion of the mucosal surface area, risking a potentially high miss rate of early neoplastic lesions. We assessed whether the new iScan Optical
M. Everson, L. Lovat, D. G. Graham, P. Bassett, C. Magee, D. Alzoubaidi, J. Fernandez-sordo, R. Sweis, M. Banks, S. Wani, J. Esteban, K. Ragunath, R. Bisschops, R. Haidry   +13 more
semanticscholar   +1 more source

All-optical pulse processing for advanced photonic communication system [PDF]

, 2008
This paper investigates the use of a two-photon absorption photodetector for high speed processing of ultrashort optical pulses in advanced photonic communication systems. Specifically the paper describes how the two-photon absorption photodetector maybe
Guo, Wei Hua, O\u27Dowd, John, K. J. Dexter, O'Dowd, John, Donegan, John Francis, W.H. Guo, A.L. Bradley, P.J. Maguire, Dexter, Karl J., Reid, Douglas A., Barry, Liam P., K. Bondarczuk, Bondarczuk, Krzysztof, Lynch, Michael, D.A. Reid, J. O'Dowd, J.F. Donegan, Bradley, Ann Louise, L.P. Barry, Maguire, Paul J., M. Lynch   +20 more
core   +1 more source

Broadband Enhancement in the Spectral Response of Photovoltaic Modules with Flower-like Silver Particles

Photonics, 2023
Recent research has indicated that metal nanoparticles, known for their unique optical properties, can enhance the spectral response of photovoltaic modules.
Yan Wang, Feng Zhang, Xinmin Fan, Yabin Lu, Chunyan Wang, Xiaodong Huang, Lujun Zhang   +6 more
doaj   +1 more source

Optical Waveguide Enhanced Photovoltaics

Optics Express, 2008
Enhanced light to electric power conversion efficiency of photovoltaic cells with a low absorbance was achieved using waveguide integration. We present a proof of concept using a very thin dye-sensitized solar cell which absorbed only a small fraction of the light at normal incidence.
Sven, Rühle, Shlomit, Greenwald, Elad, Koren, Arie, Zaban   +3 more
openaire   +2 more sources

Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4 [PDF]

, 2015
We analyze the pump wavelength dependence for the photo-induced enhancement of interlayer coupling in La1.885Ba0.115CuO4, which is promoted by optical melting of the stripe order. In the equilibrium superconducting state (T < TC = 13 K), in which stripes
Eliza Casandruc, Daniele Nicoletti, S. Rajasekaran, Y. Laplace, V. Khanna, G. Gu, J. Hill, A. Cavalleri, A. Cavalleri   +8 more
semanticscholar   +1 more source

Revising quantum optical phenomena in adatoms coupled to graphene nanoantennas

Nanophotonics, 2022
Graphene flakes acting as photonic nanoantennas may sustain strong electromagnetic field localization and enhancement. To exploit the field enhancement, quantum emitters such as atoms or molecules should be positioned in such close proximity to the flake
Kosik Miriam, Müller Marvin M., Słowik Karolina, Bryant Garnett, Ayuela Andrés, Rockstuhl Carsten, Pelc Marta   +6 more
doaj   +1 more source

Hybrid Dissipative and Dispersive Optomechanically Induced Transparency

IEEE Transactions on Quantum Engineering, 2021
Traditionally, the optical interference and energy conversion could be modulated by dissipation and dispersion in nonlinear optomechanical systems. Here, in this article, we study the enhancement of dissipative coupling on transparency under generalized ...
Yong-Pan Gao, Daquan Yang, Peng-Fei Lu, Chuan Wang   +3 more
doaj   +1 more source

Optical Antennas for Enhanced Efficiency

Solar Energy: New Materials and Nanostructured Devices for High Efficiency, 2008
High efficiency solutions for photovoltaics requires taking advantage of IR photons energy. Possible solutions are based on up-conversion processes which have a low cross section. We will discuss different solutions to enhance the absorption.
Esteban, Ruben, Laroche, Marine, Greffet, Jean-Jacques   +2 more
openaire   +2 more sources

Impact of geometry and magneto-optical properties on field enhancement and optical bistability in core–shell nanoparticles

Journal of Theoretical and Applied Physics, 2018
We study the interaction of electromagnetic field with two of the most tunable nanostructure geometries for nanoplasmonics including the magneto-optical nanoshell structure and the spheroidal geometry. We investigate the effect of combining both geometry
Tayebeh Naseri, Fatemeh Pourkhavari
doaj   +1 more source

Local field enhancement at the core of cylindrical nanoinclusions embedded in a linear dielectric host matrix

Condensed Matter Physics, 2016
In this paper we have discussed theoretical concepts and presented numerical results of local field enhancement at the core of different assemblages of metal/dielectric cylindrical nanoinclusions embedded in a linear dielectric host matrix.
Y.A. Abbo, V.N. Mal'nev , A.A. Ismail
doaj   +1 more source