Results 21 to 30 of about 377 (127)

Reflectance anisotropy spectroscopy: A probe to explore organic epitaxial growth [PDF]

, 2009
Reflectance anisotropy spectroscopy (RAS) is demonstrated to be particularly suitable for studying the deposition of organic epitaxial layers in ultrahigh vacuum by organic molecular beam epitaxy, thanks to its high sensitivity and applicability in situ.
S. Cirilli, Sassella, A., V. Chiostri, Chiostri, V, Raimondo, L., G. Bussetti, Violante, A., BUSSETTI, GIANLORENZO, A. Sassella, Campione, M., Braga, D, Raimondo, L, Goletti, C., Violante, A, Chiostri, V., GOLETTI, CLAUDIO, Goletti, C, Chiaradia, P, C. Goletti, Borghesi, A., Chiaradia, P., Cirilli, S., M. Campione, CHIARADIA, PIETRO, A. Violante, Campione, M, D. Braga, CHIOSTRI, VINCENZO, L. Raimondo, Bussetti, G, P. Chiaradia, Braga, D., Sassella, A, Cirilli, S, Borghesi, A, A. Borghesi   +35 more
core   +1 more source

Anisotropic NMR as a Crucial Tool for Differentiation of Epimers With High Conformational Flexibility

Angewandte Chemie, EarlyView.
Epimer discrimination remains challenging due to subtle NMR differences. Here, we propose a methodology based on 13C‐RCSA and RDC anisotropic parameters, enabling the assignment of two flexible tetraprenyltoluquinol epimers (1a and 1b) with remote stereoclusters.
Juan Carlos C. Fuentes‐Monteverde, Abel M. Forero, Nilamoni Nath, Antonio Hernández Daranas, Carlos Jiménez, Jaime Rodríguez, Christian Griesinger   +6 more
wiley   +2 more sources

Photosensitive AlGaAs / GaAs Structures Grown by Molecular Beam Epitaxy [PDF]

Журнал нано- та електронної фізики, 2014
AlGaAs / GaAs photosensitive structures were grown by molecular beam epitaxy and photodetector devices were fabricated. The structures were characterized by reflection high-energy electron diffraction (RHEED), reflectance anisotropy spectroscopy (RAS ...
M.A. Bazalevsky, G.I. Koltsov, S.I. Didenko, S.Yu. Yurchuk, S.A. Legotin, O.I. Rabinovich, V.N. Murashev, I.P. Kazakov   +7 more
doaj  

Basic Concepts and Interfacial Aspects of High-Efficiency III-V Multijunction Solar Cells

CHIMIA, 2007
Among various types of solar cells, MOVPE-grown triple-junction III-V compound semiconductors are today's most efficient photovoltaic devices with conversion efficiencies exceeding 40%.
B. Erol Sağol, Ulf Seidel, Nadine Szabó, Klaus Schwarzburg, Thomas Hannappel   +4 more
doaj   +1 more source

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

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

Machine Learning‐Assisted Design and Performance Prediction of a Compact Dual‐Band Polarization‐Insensitive THz Metamaterial Absorber for Skin‐Cancer‐Related Refractive‐Index Sensing

Advanced Electronic Materials, EarlyView.
A compact QASRR‐based THz metamaterial absorber enables polarization‐insensitive dual‐band absorption and skin‐cancer‐related refractive‐index sensing through measurable resonance shifts. Field, surface‐current, and circuit analyses clarify the dual‐resonance mechanism, while StackNet‐assisted prediction accurately estimates the simulated absorption ...
Md. Murad Kabir Nipun, S. M. Rifatur Rana, Md. Golam Morshed, Imrose Jahan, F. A. Sabbir Ahamed, Md. Jahedul Islam   +5 more
wiley   +1 more source

Use of reflectance anisotropy spectroscopy for mapping the anisotropy of lyotropic liquid crystal dispersions in formulations

, 2016
Lyotropic liquid crystal dispersions have commercial importance in the formulation of cleaning products and pharmaceuticals. The anisotropy of such dispersions is an important aspect of their properties and a simple method for measurement would be ...
Weightman, P, Smith, CI, Prescott, EM, Rabone, KL   +3 more
core   +1 more source

Reflectance anisotropy spectroscopy of Fe3O4(110): Anisotropic strain

, 2018
We present a study of (110)-terminated magnetite using a range of surface-sensitive techniques, the foremost of those being reflectance anisotropy spectroscopy (RAS).
Lübben, O/, Shvets, Igor, Walls, Brian, WALSHE, KILLIAN, Zhussupbekova, K., Fleischer, Karsten   +5 more
core   +1 more source

Reflectance anisotropy and Raman scattering spectroscopy studies of ZnSe grown on GaAs(001)

, 1995
Using an evaporation chamber equipped with a ZnSe compound source, we have grown ZnSe on GaAs(001) and characterized the surface using low-energy electron diffraction (LEED), Raman scattering spectroscopy and reflectance anisotropy spectroscopy (RAS ...
Morris, S. J., Spaltmann, D., Matthai, Clarence Cherian, Williams, Robert   +3 more
core   +1 more source