Results 11 to 20 of about 14,554 (282)

Sensing strain-induced symmetry breaking by reflectance anisotropy spectroscopy [PDF]

Applied Physics Letters, 2021
Intentional breaking of the lattice symmetry in solids is a key concept to alter the properties of materials by modifying their electronic band structure. However, the correlation of strain-induced effects and breaking of the lattice symmetry is often indirect, resorting to vibrational spectroscopic techniques, such as Raman scattering.
M. Volpi, Sophie Beck, Alexander Hampel, Henning Galinski, Alla S. Sologubenko, Ralph Spolenak   +5 more
openalex   +4 more sources

In-situ etch-depth control better than 5 nm with reflectance anisotropy spectroscopy (RAS) equipment during reactive ion etching (RIE): A technical RAS application [PDF]

AIP Advances, 2019
A measurement technique, i.e. reflectance anisotropy/difference spectroscopy (RAS/RDS), which had originally been developed for in-situ epitaxial growth control, is employed here for in-situ real-time etch-depth control during reactive ion etching (RIE ...
Christoph Doering, Johannes Strassner, Henning Fouckhardt   +2 more
doaj   +2 more sources

Effects of varying solar-view geometry and canopy structure on solar-induced chlorophyll fluorescence and PRI

International Journal of Applied Earth Observations and Geoinformation, 2020
The increasing amount of continuous time series of solar-induced fluorescence (SIF) and vegetation indices (e.g. Photochemical Reflectance Index, PRI) acquired with high temporal (sub-minute) frequencies is foreseen to allow tracking of the structural ...
Khelvi Biriukova, Marco Celesti, Anton Evdokimov, Javier Pacheco-Labrador, Tommaso Julitta, Mirco Migliavacca, Claudia Giardino, Franco Miglietta, Roberto Colombo, Cinzia Panigada, Micol Rossini   +10 more
doaj   +2 more sources

Characterization of the Manufacturing Processes to Grow Triple-Junction Solar Cells [PDF]

International Journal of Photoenergy, 2014
A number of important but little-investigated problems connected with III-V/Ge heterostructure in the GaInP/GaInAs/Ge multijunction solar cells grown by MOVPE are considered in the paper.
N. A. Kalyuzhnyy, V. V. Evstropov, V. M. Lantratov, S. A. Mintairov, M. A. Mintairov, A. S. Gudovskikh, A. Luque, V. M. Andreev   +7 more
doaj   +5 more sources

In Situ Optical Monitoring and Morphological Evolution of Si Nanowires Grown on Faceted Al₂O₃(0001) Substrates [PDF]

Nanomaterials
This paper presents the growth and in situ optical characterization of silicon nanowires (Si NWs) on Al2O3(0001) substrates that are thermally faceted using the atomic low angle shadowing technique (ATLAS) method. Annealing Al2O3 substrates in air before
Olzat Toktarbaiuly, Mergen Zhazitov, Muhammad Abdullah, Yerbolat Tezekbay, Nazerke Kydyrbay, Nurxat Nuraje, Tolagay Duisebayev   +6 more
doaj   +2 more sources

Polarized optical contrast spectroscopy of in plane anisotropic van der Waals materials [PDF]

Scientific Reports
Polarized optical contrast spectroscopy is a simple and non-destructive approach to characterize the crystalline anisotropy and orientation of two-dimensional materials.
Ernst Knöckl, Alexandre Bernard, Alexander Holleitner, Christoph Kastl   +3 more
doaj   +2 more sources

A Reflectance Anisotropy Spectroscopy Investigation of Porphyrin Langmuir-Blodgett Films [PDF]

physica status solidi (a), 2001
Until now, with a few exceptions, Reflectance Anisotropy Spectroscopy (RAS) has been applied mostly to inorganic semiconductors and metals, proving to be a powerful tool to investigate their optical properties, via anisotropies introduced by the surface in otherwise isotropic bulk materials.
C. Goletti, Gianlorenzo Bussetti, P. Chiaradia, Roberto Paolesse, Corrado Di Natale, Eugenio Mazzone, A. D’Amico   +6 more
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A microprocessor-aided platform enabling surface differential reflectivity and reflectance anisotropy spectroscopy [PDF]

The European Physical Journal Plus, 2021
Abstract Surface differential reflectivity (SDR) and reflectance anisotropy spectroscopy (RAS) [sometimes known as reflectance difference spectroscopy] are two well-known optical spectroscopies used in the investigation of surfaces and interfaces.
Gianlorenzo Bussetti, Lorenzo Ferraro, Alberto Bossi, Marcello Campione, Lamberto Duò, F. Ciccacci   +5 more
openalex   +4 more sources

Optical anisotropy of pristine and reduced V2O5(010) [PDF]

Scientific Reports
The optical anisotropy of pristine and reduced single crystalline (010) orientated $$\hbox {V}_{2}\hbox {O}_{5}$$ is presented. The reduction of $$\hbox {V}_{2}\hbox {O}_{5}$$ is complex due to the abundance of V-O phases, strong dependence on the ...
Brian Walls, Oisín Murtagh, Chris M. Smith, Daragh Mullarkey, Dmitry Shulyatev, Karsten Fleischer, Ainur Zhussupbekova, Igor V. Shvets   +7 more
doaj   +2 more sources

Bilipid membrane phase characterization by reflectance anisotropy spectroscopy (RAS)

SPIE Proceedings, 2013
In this work we propose the use of experimental and theoretical reflectance anisotropy spectra (RAS) as a new tool to identify structural and dynamical aspects of the bilipid membrane and its various constituent molecules. The role of geometric details at the atomic level and macroscopic quantities, such as the membrane curvature and tilt for the ...
Priscila P. Fávero, A. C. Ferraz, Maurı́cio S. Baptista, R. Miotto   +3 more
openalex   +2 more sources