Results 61 to 70 of about 78,535 (255)

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Uncertainty Estimation for the Brillouin Frequency Shift Measurement Using a Scanning Tandem Fabry–Pérot Interferometer

Micromachines, 2023
The expanded uncertainty of the measured Brillouin scattering shift frequencies is essential in assessing the measurements of parameters of various materials. We describe the general operation principles of a Brillouin light scattering (BLS) spectrometer
Patrice Salzenstein, Thomas Y. Wu
doaj   +1 more source

Nonmonotonic d_{x^2-y^2} Superconducting Order Parameter in Nd_{2-x}Ce_xCuO_4

, 2002
Low energy polarized electronic Raman scattering of the electron doped superconductor Nd_1.85Ce_0.15CuO_4 (T_c=22 K) has revealed a nonmonotonic d_{x^2-y^2} superconducting order parameter.
A. Chubukov, A. Gozar, A. Koitzsch, A. P. Kampf, B. S. Dennis, B. Stadlober, C. A. Kendziora, C. C. Tsuei, D. Einzel, D. H. Wu, D. Manske, E. J. Singley, G. Blumberg, G. Blumberg, G. Blumberg, G. Blumberg, H. L. Liu, H. Takagi, J. D. Kokales, J. L. Peng, J. L. Peng, J. Schmalian, L. B. Ioffe, M. Kang, M. R. Norman, M. R. Norman, M. T. Beal-Monod, M. T. Beal-Monod, M. V. Klein, N. P. Armitage, N. P. Armitage, P. Fournier, Q. Huang, R. Hackl, R. Hlubina, R. L. Greene, R. Nemetschek, R. Prozorov, S. B. Dierker, S. I. Woods, S. L. Cooper, S. L. Cooper, S. Uchida, T. P. Devereaux, T. P. Devereaux, T. Sato, T. Staufer, Wu Jiang, X. K. Chen, Y. Tokura, Z-X. Shen   +50 more
core   +1 more source

Stimulated Brillouin Scattering Microscopic Imaging [PDF]

Scientific Reports, 2015
AbstractTwo-dimensional stimulated Brillouin scattering microscopy is demonstrated for the first time using low power continuous-wave lasers tunable around 780 nm. Spontaneous Brillouin spectroscopy has much potential for probing viscoelastic properties remotely and non-invasively on a microscopic scale.
Charles W. Ballmann, Jonathan V. Thompson, Andrew J. Traverso, Zhaokai Meng, Marlan O. Scully, Vladislav V. Yakovlev   +5 more
openaire   +2 more sources

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

Advanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo, Masoud Mansouri, Carlos Garcia‐Fernandez, Daniel Sánchez‐Portal, Aran Garcia‐Lekue, Gustavo Ceballos, Aitor Mugarza   +6 more
wiley   +1 more source

Bond-Bending and Bond-Stretching Phonons in Ferromagnetic La_0.7Sr_0.3MnO_3

, 2005
Longitudinal optical phonons with oxygen character were measured in La_0.7Sr_0.3MnO_3 by inelastic neutron scattering in the (1 0 0) cubic direction and results were compared with shell model predictions.
D. Reznik, W. Reichardt, W. Reichardt
core   +2 more sources

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Enhancement of Brillouin Scattering Signal in Perfluorinated Graded-Index Polymer Optical Fibers

Applied Sciences, 2012
Perfluorinated graded-index polymer optical fibers (PFGI-POFs), fabricated by replacing the hydrogen atoms of standard polymethyl methacrylate-based POFs with fluorine atoms, have been extensively studied due to their relatively low propagation loss even
Yosuke Mizuno, Kentaro Nakamura
doaj   +1 more source

Temperature independent diffuse scattering and elastic lattice deformations in relaxor PbMg1/3Nb2/3O3

, 2011
The results of diffuse neutron scattering experiment on PbMg1/3Nb2/3O3 single crystal above the Burns temperature are reported. It is shown that the high temperature elastic diffuse component is highly anisotropic in low-symmetry Brillouin zones and this
A. I. Rudskoy, A. V. Filimonov, G. A. Smolensky, K. Hirota, M. A. Krivoglaz, M. Matsuura, R. G. Burkovsky, S. B. Vakhrushev   +7 more
core   +1 more source

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source