Results 11 to 20 of about 1,547,483 (263)

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, S. Beck, A. Hampel, H. Galinski, A. Sologubenko, R. Spolenak   +5 more
openaire   +2 more sources

Reflectance anisotropy spectroscopy of magnetite (110) surfaces [PDF]

Physical Review B, 2014
Reflectance anisotropy spectroscopy (RAS) has been used to measure the optical anisotropies of bulk and thin-film Fe3O4(110) surfaces. The spectra indicate that small shifts in energy of the optical transitions, associated with anisotropic strain or electric field gradients caused by the (110) surface termination or a native oxide layer, are ...
MAUIT, OZHET, SMITH, CHRISTOPHER, FLEISCHER, KARSTEN, FARRELL, LEO, MCGILP, JOHN, SHVETS, IGOR   +5 more
  +6 more sources

Two Methods of Near Infrared Reflectance Spectroscopy for Determining the Digestibility and Energy Value of Feeds [PDF]

, 1997
Two groups of rations with known in vivo digestibility and energy values were used in this study. These rations were composed of Italian ryegrass only (lRO. n = 45), and combination of Italian ryegrass and concentrates (lRC, n = 58).
Agung PURNOMOADI, Kurihara, Mitsunori, Nishida, Takehiro, Purnomoadi, Agung, Takehiro NISHIDA, Tatsuo HAMADA, ABE, Akira, Akira ABE, Terada , Fuminori, Hamada, Tatsuo, Mitsunori KURIHARA, Fuminori TERADA   +11 more
core   +2 more sources

Structure and Physical Properties of the LaBiFe2O6 Perovskite Produced by the Modified Pechini Method [PDF]

Materials Research, 2017
In this paper the synthesis of the LaBiFe2O6 material by the modified Pechini method is reported. Structural, morphologic, magnetic and optic experimental studies were performed.
Johny Andrés Jaramillo Palacio, Elixir William Barrera Bello, Julián Andrés Munévar Cagigas, Oscar Arnache, David A. Landínez-Téllez, Jairo Roa-Rojas   +5 more
doaj   +2 more sources

Porphycene Films Grown on Highly Oriented Pyrolytic Graphite: Unveiling Structure–Property Relationship through Combined Reflectance Anisotropy Spectroscopy and Atomic Force Microscopy Investigations

Proceedings, 2021
Thin organic films are widely used in sensors, solar cells, and optical devices due to their intense absorption in the visible/near-infrared (IR) region.
Marta Penconi, Lorenzo Ferraro, Jacek Waluk, Lamberto Duò, Franco Ciccacci, Alberto Bossi, Marcello Campione, Gianlorenzo Bussetti   +7 more
doaj   +1 more source

A research product for tropospheric NO₂ columns from Geostationary Environment Monitoring Spectrometer based on Peking University OMI NO₂ algorithm [PDF]

Atmospheric Measurement Techniques, 2023
Tropospheric vertical column densities (VCDs) of nitrogen dioxide (NO2) retrieved from sun-synchronous satellite instruments have provided abundant NO2 data for environmental studies, but such data are limited by retrieval uncertainties and insufficient ...
Y. Zhang, J. Lin, J. Kim, H. Lee, J. Park, H. Hong, M. Van Roozendael, F. Hendrick, T. Wang, T. Wang, P. Wang, P. Wang, Q. He, K. Qin, Y. Choi, Y. Kanaya, J. Xu, P. Xie, P. Xie, X. Tian, S. Zhang, S. Wang, S. Cheng, X. Cheng, J. Ma, T. Wagner, R. Spurr, L. Chen, H. Kong, M. Liu   +29 more
doaj   +1 more source

In Situ and Real-Time Monitoring of Doping Levels by Reflectance Anisotropy Spectroscopy (RAS) during Molecular Beam Epitaxial (MBE) Growth of III/V Semiconductors

Advances in Materials Science and Engineering, 2023
Reflectance anisotropy/difference spectroscopy (RAS/RDS) had been developed for monitoring epitaxial semiconductor growth, especially for the metal-organic chemical vapor deposition (MOCVD) of III/V semiconductors.
Henning Fouckhardt, Johannes Richter, Christoph Doering, Johannes Strassner   +3 more
doaj   +1 more source

Reflectance anisotropy spectroscopy of strain-engineered GaAsBi alloys [PDF]

Applied Physics Letters, 2022
In this paper, we present results obtained by an optical technique, namely, reflectance anisotropy spectroscopy (RAS), applied to a series of GaAs1−xBix samples grown by molecular beam epitaxy (MBE) under different strain conditions with the increasing concentration of Bi, up to the higher value of about 7%.
C. Goletti, L. Fazi, E. Tisbi, B. Bonanni, E. Placidi, F. Arciprete   +5 more
openaire   +4 more sources

Rapid measurement of polycyclic aromatic hydrocarbon contamination in soils by visible and near-infrared spectroscopy [PDF]

, 2013
Polycyclic aromatic hydrocarbons (PAHs) are widely distributed organic pollutants. At petroleum contaminated sites, PAHs are often the key risk drivers because of their carcinogenicity. Assessing the risk of PAH at contaminated sites by conventional soil
Okparanma, Reuben N.
core   +7 more sources

Near infrared reflectance spectroscopy compared with soil clay and organic matter content for estimating within-field variation in N uptake in cereals [PDF]

, 2008
Adjusting fertiliser applications to within-field variations in nitrogen (N) mineralisation during the growing season can increase yields, improve crop quality, reduce costs and decrease nutrient losses to the environment. Predicting such variations at a
Stenberg, Bo, Wetterlind, Johanna, Jonsson, Anders   +2 more
core   +1 more source