Organic and inorganic interpretations of the martian UV–IR reflectance spectrum

Nature ◽  
1982 ◽  
Vol 295 (5844) ◽  
pp. 43-46 ◽  
Author(s):  
Kevin D. Pang ◽  
Sandy F. S. Chun ◽  
Joseph M. Ajello ◽  
Zhao Nansheng ◽  
Liang Minji
Keyword(s):  
Reflectance Spectrum ◽  
Ir Reflectance

Quantum-mechanical simulation of the IR reflectance spectrum of Mn3Al2Si3O12 spessartine

2015 ◽  
Author(s):  
A. M. Ferrari ◽  
R. Demichelis ◽  
F. Pascale ◽  
A. Meyer ◽  
L. Maschio ◽  
...  
Keyword(s):  
Reflectance Spectrum ◽  
Quantum Mechanical ◽  
Mechanical Simulation ◽  
Ir Reflectance

Mid-IR reflectance spectrum of multilayer graphene: Influence of adsorbate at the graphene – substrate interface

2019 ◽  
Vol 49 (11) ◽  
pp. 1074-1077
Author(s):  
V D Frolov ◽  
P A Pivovarov ◽  
V G Plotnichenko ◽  
V I Konov
Keyword(s):  
Reflectance Spectrum ◽  
Multilayer Graphene ◽  
Substrate Interface ◽  
Ir Reflectance

Significance of absorption features in Io's IR reflectance spectrum

Nature ◽  
1979 ◽  
Vol 280 (5725) ◽  
pp. 761-763 ◽  
Author(s):  
Fraser P. Fanale ◽  
R. Hamilton Brown ◽  
Dale P. Cruikshank ◽  
Roger N. Clake
Keyword(s):  
Reflectance Spectrum ◽  
Ir Reflectance ◽  
Absorption Features

scholarly journals Identification of pigments in artworks by inverse tangent derivative of spectrum and a new filtering method

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
F. Fazlali ◽  
S. Gorji Kandi
Keyword(s):  
Reflectance Spectrum ◽  
Practical Method ◽  
Chemical Methods ◽  
Munk Function ◽  
Absorption Of Light ◽  
Spectrophotometric Data ◽  
First Time ◽  
Non Destructive ◽  
Derivatives Of

Abstract Employing an economical and non-destructive method for identifying pigments utilized in artworks is a significant aspect for preserving their antiquity value. One of the non-destructive methods for this purpose is spectrophotometry, which is based on the selected absorption of light. Mathematical descriptive methods such as derivatives of the reflectance spectrum, the Kubelka–Munk function and logarithm have been employed for the characterization of the peak features corresponding to the spectrophotometric data. In the present study, the mentioned mathematical descriptive methods were investigated with the aim to characterize the constituents of an Iranian artwork but were not efficient for the samples. Therefore, inverse tangent derivative equation was developed on spectral data for the first time, providing considerable details in the profile of reflectance curves. In the next part, to have a simpler and more practical method it was suggested to use filters made up of pure pigments. By using these filters and placing them on the samples, imaging was done. Then, images of samples with and without filter were evaluated and pure pigments were distinguished. The mentioned methods were also used to identify pigments in a modern Iranian painting specimen. The results confirmed these methods with reliable answers indicating that physical methods (alongside chemical methods) can also be effective in determining the types of pigments.

scholarly journals Optical Response Associated with the Orientation and Structure of Liquid Crystals with Respect to Phosphatidylcholine Concentration

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 678
Author(s):  
Yuqi Han ◽  
Yan Jiang ◽  
Wei Guo ◽  
Bing Li ◽  
Lu Zhang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Reflectance Spectrum ◽  
Optical Response ◽  
The Self ◽  
Cholesteric Liquid Crystals ◽  
Anchoring Effect ◽  
Self Assembling ◽  
Sensitization Effect ◽  
Structure Of Liquid

Based on the anchoring effect due to the self-assembling behavior of the phospholipid molecules at the interface between the liquid crystal and water phases on the orientation of liquid crystals, the optical response associated with the orientation and structure of liquid crystals with respect to the concentration of 1,2-didodecanoyl-sn-glycero-3-phosphocholine solution has been investigated. The optical response owing to changes in the orientation and structure of the mixed cholesteric liquid crystals with respect to the change in the concentration of phosphatidylcholine has been obtained. Moreover, the feasibility of using as-prepared mixed cholesteric liquid crystals to measure the phosphatidylcholine concentration has been verified. A methodology to measure the reflectance spectrum by using mixed cholesteric liquid crystals to sensitize the phosphatidylcholine concentration has been further realized. The sensitization effect of the mixed cholesteric liquid crystals on the measurement of phosphatidylcholine concentration was also verified.

Origin of surface reflectance spectrum during epitaxy

1997 ◽  
Vol 174 (1-4) ◽  
pp. 544-549 ◽  
Author(s):  
Naoki Kobayashi ◽  
Yasuyuki Kobayashi ◽  
Kunihiko Uwai
Keyword(s):  
Reflectance Spectrum ◽  
Surface Reflectance

Temperature dependence of the reflectance spectrum of bis-(ethylendithio)tetrathiafulvalenium perchlorate, (BEDT-TTF)3(ClO4)2

1988 ◽  
Vol 25 (4) ◽  
pp. 323-331 ◽  
Author(s):  
Hiroyuki Tajima ◽  
Hirohisa Kanbara ◽  
Kyuya Yakushi ◽  
Haruo Kuroda ◽  
Gunzi Saito ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Reflectance Spectrum

Reflectance spectrum of plasmon waveguide interband cascade lasers and observation of the Berreman effect

2011 ◽  
Vol 110 (4) ◽  
pp. 043113 ◽  
Author(s):  
Robert T. Hinkey ◽  
Zhaobing Tian ◽  
Rui Q. Yang ◽  
Tetsuya D. Mishima ◽  
Michael B. Santos
Keyword(s):  
Reflectance Spectrum ◽  
Interband Cascade Lasers ◽  
Cascade Lasers
Sign in / Sign up

Export Citation Format

Share Document