Results 51 to 60 of about 1,741,812 (125)

Polishing-related optical anisotropy of semi-insulating GaAs studied by reflectance difference spectroscopy

open access: yes, 2000
The strong in-plane optical anisotropy of (001) semi-insulating GaAs, which comes from the submicron region under the surface, has been observed by reflectance difference spectroscopy.
Chen YH,Chinese Acad Sci,Inst Semicond,Lab Semicond Mat Sci,POB 912,Beijing 100083,Peoples R China.   +4 more
core  

Shining Light on Quantum Materials: Interplay of Symmetry, Quantum Geometry, and Nonlinear Photocurrents

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 9, September 2026.
Nonlinear photocurrents provide broadband spectroscopic access to quantum materials from terahertz to optical frequencies. Their sensitivity to spin, orbital, chiral, topological, and quantum‐geometric properties enables insights across ferroelectrics, magnetic and two‐dimensional materials, moiré heterostructures, topological flat bands, and light ...
Kurosch Mehrgan   +2 more
wiley   +1 more source

Mesoporous Hexametallic High‐Entropy Alloy Nanotubes With Multicomponent Electronic Modulation for Efficient Bifunctional Catalysis

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Platinum‐based electrocatalysts are fundamentally constrained by strong oxygen binding, which restricts the oxygen reduction reaction (ORR) kinetics, and by severe CO poisoning, which hinders the methanol oxidation reaction (MOR). To address these limitations, we synthesized PdPtRuIrRhNi high‐entropy alloy (HEA) mesoporous nanotubes that ...
Hong Pan   +6 more
wiley   +1 more source

Biomimetic Design of Biopolymer‐Based Water‐Resistant Food Packaging Materials

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 5, September 2026.
ABSTRACT With the growing demand for sustainable and eco‐friendly food packaging, biopolymer‐based materials are emerging as promising candidates due to their recyclability, biodegradability, and food safety. However, in practical applications dealing with high moisture content or perishable foods, their lack of water resistance poses a significant ...
Ajahar Khan   +3 more
wiley   +1 more source

Study on in-plane optical anisotropy of semiconductor materials by reflectance difference spectroscopy

open access: yes, 2006
In the present review, the measuring principle of reflectance difference spectroscopy (RDS) is given. As a powerful tool in the surface and interface analysis technologies, the application of RDS to the research on semiconductor materials is summarized ...
Zuo YH (Zuo Yu-hua)   +5 more
core  

The use of near infrared (NIR) spectroscopy to improve soil mapping at the farm scale [PDF]

open access: yes, 2008
The creation of fine resolution soil maps is hampered by the increasing costs associated with conventional laboratory analyses of soil. In this study, near infrared (NIR) reflectance spectroscopy was used to reduce the number of conventional soil ...
Söderström, Mats   +2 more
core   +1 more source

Studies of Near Infrared Spectroscopy for P!'edicting Forage Quality of Tropical Grasses [PDF]

open access: yes, 1992
Introduction Near Infrared Reflectance Spectroscopy (NIRS) for forage has been widely and successfully used throughout the world, but the study for tropical grasses is still limited, especially in Asia including Japan and Indonesia.
Kameoka, Kenichi   +2 more
core   +1 more source

Interface-related in-plane optical anisotropy in GaAs/AlxGa1-xAs single-quantum-well structures studied by reflectance difference spectroscopy

open access: yes, 2002
The in-plane optical anisotropies of a series of GaAs/AlxGa1-xAs single-quantum-well structures have been observed at room temperature by reflectance difference spectroscopy.
Chen YH,Chinese Acad Sci,Inst Semicond,Lab Semicond Mat Sci,POB 912,Beijing 100083,Peoples R China.   +5 more
core  

Molecular orientation with visible light: reflectance-anisotropy spectroscopy of 3-thiophene carboxylate on Cu(110) surfaces

open access: yes, 1998
We present reflectance-anisotropy spectroscopy data for the adsorption of 3-thiophene carboxylic acid on the clean and O(2 x 1)/Cu(110) surfaces, which demonstrates the sensitivity to orientation parallel and perpendicular to the surface.
Cole, RJ   +10 more
core   +2 more sources

Determination of Degree of Anisotropy of KTP Crystal Using Reflectance Anisotropy Spectroscopy Technique

open access: yes, 2006
Reflectance anisotropy spectroscopy (RAS) is a non-distractive optical probe of surfaces that is capable of operation within a wide range of environments.
Gashaw, Fekadu
core   +1 more source

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