Results 21 to 30 of about 423,461 (345)
The hydrous Ca‐sulfates, gypsum and bassanite, have been detected on Mars using both visible/near‐infrared (VNIR) remote sensing measurements and in‐situ rover‐based mineralogical measurements.
Cheng Ye +2 more
doaj +1 more source
We explored spectral diversity in infrared (IR, 4–25 μm) imaginary (k) and real (n) indices of refraction (optical constants) for 26 surface soils that originated from global dust entrainment regions.
Mohammad R. Sadrian +4 more
doaj +1 more source
To Study the Silver Concentration Effect on the Optical and Electrical Properties of the Ag/PMMA Composites [PDF]
The present work was carried out to investigate the silver concentration Effect (Ag %)othe optical and the electrical properties of the polymethyl methacrylate (PMMA).
Nahida G.Hamed, Maraw Rahem
doaj +1 more source
Dopping Effect On Optical Constants of Polymethylmethacrylate (PMMA) [PDF]
The optical constants (refractive index (n) , extinction coefficient (k) , realand imaginary parts of dielectric constant(ε1&ε2)) of polymethyl methacrylate(PMMA) doped with methylene blue (mb) and methyl red (mr) withthickness in the range (0.1-0.2) mm ...
Ahmad H, Awatif M, Zeid N
doaj +1 more source
On the Optical Properties of Cr2Ge2Te6 and Its Heterostructure
Recently, there has been a growing interest in two-dimensional van der Waals (vdW) magnets owing to their unique two-dimensional magnetic phenomena and potential applications.
Hiroshi Idzuchi +7 more
doaj +1 more source
Precision Optical Measurements and Fundamental Physical Constants [PDF]
A brief overview is given on precision determinations of values of the fundamental physical constants and the search for their variation with time by means of precision spectroscopy in the optical ...
A Huber +24 more
core +3 more sources
Extensive study of magneto-optical and optical properties of Cd1−xMnxTe between 675 and 1025 nm
We determine Faraday rotations and measure the optical reflection and transmission from magneto-optical Cd1−xMnxTe crystals with various stoichiometric ratios. For wavelengths between 675 and 1025 nm, we derive Verdet constants, optical loss coefficients,
Christoph Tyborski +4 more
doaj +1 more source
Accurate determination of terahertz optical constants by vector network analyzer of Fabry-Perot response [PDF]
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.38.005438.
Donnan, R +4 more
core +2 more sources
Determination of Optical Constants in the Mid-Infrared Spectral Range by use of the Attenuated Total Reflection Method [PDF]
Infrared (IR) spectroscopy is one of the most useful experimental methods in the investigation of hydrogen-bonded systems. However, application of transmission IR spectroscopy to aqueous systems is only of limited value due to the very strong water ...
Biliškov, N:
doaj
Optical constants of sodium sulphide
Infrared and Raman measurements are reported. From these, real and imaginary parts of the dielectric constant, longitudinal and transverse optical mode, the static dielectric constant and the effective charge are calculated.
Montaner, Antoine +3 more
openaire +2 more sources

