Results 21 to 30 of about 1,741,812 (125)

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

open access: yesЖурнал 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   +7 more
doaj  

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

open access: yesCHIMIA, 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   +4 more
doaj   +1 more source

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

open access: yes, 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   +3 more
core   +1 more source

The application of reflectance anisotropy spectroscopy to organics deposition

open access: yes, 2004
Reflectance anisotropy spectroscopy (RAS) has been recently used to investigate organic compounds, similarly to what has been already done in the case of inorganic semiconductors and metals.
Goletti, C   +8 more
core   +2 more sources

Monitoring real time polymorphic transformation of sulfanilamide by diffuse reflectance visible spectroscopy [PDF]

open access: yes, 2016
This study investigated the development of a novel approach to surface characterisation of drug polymorphism and the extension of the capabilities of this method to perform ‘real time’ in situ measurements.
Mitchell, John C.   +11 more
core   +1 more source

Sn‐Driven Grain Boundary Elimination for Single‐Crystalline Ni‐Rich Cathodes with Superior High‐Voltage Stability in Lithium‐Ion Batteries

open access: yesAdvanced Science, EarlyView.
A low‐temperature synthesis method of single‐crystalline NCA was successfully achieved by Sn doping, employing the same synthetic conditions as its polycrystalline counterparts. This synthesis was conducted at a temperature that was 150 °C lower than that required for synthesizing single‐crystalline NCA without Sn doping.
Guomeng Xie   +4 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

open access: yesAdvanced 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   +5 more
wiley   +1 more source

Adsorbate azimuthal orientation from reflectance anisotropy spectroscopy

open access: yes, 1998
We have determined the azimuthal orientation of an adsorbate on a metal surface from an intramolecular-transition-derived feature in reflectance anisotropy spectroscopy (RAS).
Cole, RJ   +4 more
core   +2 more sources

Experimentally Determined Spatiotemporal Charge Carrier Dynamics for the Development of Particulate Photocatalysts

open access: yesAdvanced Energy Materials, EarlyView.
This review looks at the different experimental techniques that measure spatiotemporal charge carrier dynamics. This information is viewed in the context of particulate photocatalysts, outlining the insights these techniques provide and how they advance our understanding.
Sutripto Khasnabis, Robert Godin
wiley   +1 more source

Detection of internal quality in kiwi with time-domain diffuse reflectance spectroscopy [PDF]

open access: yes, 2004
Time-domain diffuse reflectance spectroscopy (TRS), a medical sensing technique, was used to evaluate internal kiwi fruit quality. The application of this pulsed laser spectroscopic technique was studied as a new, possible non-destructive, method to ...
Torricelli, Alessandro   +13 more
core  

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