Results 151 to 160 of about 176,371 (204)
Some of the next articles are maybe not open access.
Reflectance Difference Spectroscopy
2018Reflectance difference spectroscopy (RDS) is a linear optical method capable of performing highly sensitive measurements to the reflectance anisotropy (RA) of solid surfaces, providing information on the surface structure and electronic states near the surface (Shudo et al.
Ken-ichi Shudo, Shin-ya Ohno
openaire +1 more source
Reflection anisotropy spectroscopy
Reports on Progress in Physics, 2005Reflection anisotropy spectroscopy (RAS) is a non-destructive optical probe of surfaces that is capable of operation within a wide range of environments. In this review we trace the development of RAS from its origins in the 1980s as a probe of semiconductor surfaces and semiconductor growth through to the present where it is emerging as a powerful ...
P Weightman +3 more
openaire +1 more source
Internal Reflection Spectroscopy
Applied Spectroscopy Reviews, 1985Abstract The history of internal reflection spectroscopy (IRS), also known as attenuated total reflection spectroscopy (ATR), began nearly two centuries ago with the observation by Newton [l] of an evanescent field in a lower index of refraction medium in contact with a higher index of refraction medium in which a propagating wave of radiation ...
openaire +1 more source
Reflection Spectroscopy of Analgesized Skin
Microvascular Research, 2001Analgesized skin, when subjected to heat stimuli, responds by increasing skin perfusion. This response does not originate from increased perfusion in superficial capillaries, but rather in the deeper lying vessels. The aim of this study was to assess changes in blood chromophore content, measured by reflection spectroscopy, in relation to the perfusion
E, Häggblad +4 more
openaire +2 more sources
Cartilage Analysis by Reflection Spectroscopy
Clinical and Biomedical Spectroscopy and Imaging IV, 2015A cartilage bioreactor with analytical functions for cartilage quality monitoring is being developed. For determining cartilage composition, reflection spectroscopy in the visible (VIS) and near infrared (NIR) spectral region is evaluated. Main goal is the determination of the most abundant cartilage compounds water, collagen I and collagen II ...
T. Laun +4 more
openaire +1 more source
Reflectance spectroscopy of pancreatic microcirculation
Journal of Applied Physiology, 1996A technique employing diffuse reflectance spectroscopy (DRS) is described to assess and mirror dynamic changes of pancreatic tissue perfusion. An especially designed reflectance spectrophotometer was initially used to derive the quantitative relation between hemoglobin concentration ([Hb]) and reflectance measurements in vitro.
W T, Knoefel +4 more
openaire +2 more sources
Specular Reflection and Diffuse Reflectance Spectroscopy of Soils
Applied Spectroscopy, 2005Studies on the occurrence and effects of specular reflection in mid-infrared spectra of soils have shown that distortions due to specular reflection occur for both organic (humic acid) and non-organic fractions (carbonates, silica, ashed fraction of soil).
James B, Reeves +2 more
openaire +2 more sources
Diffuse Reflectance Infrared Spectroscopy
Journal of Chemical Education, 1994Diffuse reflectance offers a quick and easy-to-use alternative to the preparation of KBr pellets and Nujol mulls for the infrared spectra of solid samples; includes a comparison of spectra from both techniques.
Kenneth W. Raymond, Jeffrey A. Corkill
openaire +1 more source
Internal Reflection Spectroscopy
1995When a beam of light is incident at an angle of incidence, φ1, on a plane interface from a transparent medium 1, part of the light is reflected at the interface and travels back in the plane of incidence, as shown in Fig. 1. In this specular or regular reflection, the angle of reflection equals the angle of incidence.
W. Suëtaka, John T. Yates
openaire +1 more source