Effects of Helical Distortions on the Optical Properties of Amide NH Infrared Absorption in Short Peptides in Solution

2002 ◽  
Vol 106 (22) ◽  
pp. 5733-5738 ◽  
Author(s):  
B. Pispisa ◽  
A. Palleschi ◽  
L. Stella ◽  
M. Venanzi ◽  
C. Mazzuca ◽  
...  
Keyword(s):  
Optical Properties ◽  
Infrared Absorption ◽  
Short Peptides

scholarly journals Cesium polytungstates with blue-tint-tunable near-infrared absorption

RSC Advances ◽  
2020 ◽  
Vol 10 (18) ◽  
pp. 10491-10501
Author(s):  
Satoshi Yoshio ◽  
Masao Wakabayashi ◽  
Kenji Adachi
Keyword(s):  
Optical Properties ◽  
High Temperature ◽  
Infrared Absorption ◽  
Near Infrared

Revisiting Wöhler's method (1824), Cs-doped tungsten bronzes were synthesized by reducing Cs-polytungstate at high temperature, and were pulverized into nanoparticles for determining their optical properties.

OPTICAL SPECTROSCOPY AND NONLINEAR TRANSMITTANCE STUDY OF FULLERENE C60 IN MIXTURES WITH 2-CYCLOOCTYLAMINO-5-NITROPYRIDINE (COANP)

2004 ◽  
Vol 13 (01) ◽  
pp. 113-127 ◽  
Author(s):  
SERGEY S. SARKISOV ◽  
ELENA I. RADOVANOVA ◽  
BURL H. PETERSON ◽  
ALEX LEYDERMAN ◽  
MICHAEL CURLEY ◽  
...  
Keyword(s):  
Optical Properties ◽  
Absorption Spectrum ◽  
Optical Absorption ◽  
Infrared Absorption ◽  
Chemical Bonding ◽  
Infrared Absorption Spectrum ◽  
Visible Region ◽  
Fullerene C60 ◽  
Amino Group

Characterization of the infrared absorption spectrum of the solutions of fullerene C 60 with 2-cyclooctylamino-5-nitropyridine additive has been performed with the focus on possible bonding with the amino-group of the additive. No occurrence of such bonding was found at normal conditions. Also no change of optical absorption in visible region and optical limiting of fullerene due to chemical bonding with the additive was detected. The resulting optical properties of the mixture were simply a sum of the properties of the components for a molar proportion of the additive to fullerene approaching 200:1.

scholarly journals Structural particularities and optical properties of lithium niobate single crystals grown from the charge doped by boron.

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 189-195
Author(s):  
R. A. Titov ◽  
◽  
N. V. Sidorov ◽  
N. A. Teplyakova ◽  
M. N. Palatnikov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Light Scattering ◽  
Lithium Niobate ◽  
Distribution Coefficient ◽  
Single Crystals ◽  
Infrared Absorption ◽  
Cation Sublattice ◽  
Structural Units ◽  
Photoinduced Light Scattering ◽  
Laser Conoscopy

The analysis of structural particularities and optical properties of LiNbO3 : B (0,55, 0,69 and 0,83 mol. % B2O3) was performed by methods of Raman and photoinduced light scattering, infrared absorption and laser conoscopy. It has been established that the boron impurity brings to 1 the distribution coefficient of lithium and niobium in the growing process. Thus, LiNbO3: B crystals grown from a congruent melt approach the stoichiometric crystals in ordering the structural units of the cation sublattice and the Li / Nb ratio.

scholarly journals Morphology and Optical Properties of Nanostructures Formed in Non-Stoichiometric CdI2 Crystals

2018 ◽  
Vol 63 (9) ◽  
pp. 816 ◽  
Author(s):  
I. M. Bolesta ◽  
I. N. Rovetskii ◽  
S. R. Velgosh ◽  
S. V. Rykhlyuk ◽  
I. D. Karbovnyk ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Optical Properties ◽  
Phase Composition ◽  
Infrared Absorption ◽  
Morphological Changes ◽  
Threshold Value ◽  
Optical Characteristics ◽  
Force Microscopy ◽  
Atomic Force

The morphology of nanostructures formed in non-stoichiometric CdI2 crystals has been studied, by using the atomic force microscopy methods. Morphological changes are observed, when the concentration of cadmium atoms approaches a non-stoichiometric threshold value of 0.1 mol%. The features in the phase composition of nanostructures are analyzed with the help of Raman and infrared absorption spectroscopies. The influence of the researched nanostructures on the optical characteristics of non-stoichiometric CdI2 crystals is analyzed.

Optical properties of variable-composition gadolinium selenide in the fundamental and infrared absorption regions

1980 ◽  
Vol 19 (12) ◽  
pp. 834-836
Author(s):  
L. A. Ivanchenko ◽  
T. M. Mikhlina ◽  
V. A. Obolonchik ◽  
V. A. Serdyuk ◽  
A. S. Knyazev ◽  
...  
Keyword(s):  
Optical Properties ◽  
Infrared Absorption ◽  
Variable Composition

Optical properties of porcine dermis in the mid-infrared absorption band of glucose

The Analyst ◽  
2017 ◽  
Vol 142 (8) ◽  
pp. 1235-1243 ◽  
Author(s):  
Arthur Schönhals ◽  
Hans Tholl ◽  
Mathias Glasmacher ◽  
Niels Kröger-Lui ◽  
Annemarie Pucci ◽  
...  
Keyword(s):  
Optical Properties ◽  
Absorption Band ◽  
Quantum Cascade Laser ◽  
Infrared Absorption ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Infrared Absorption Band ◽  
Porcine Dermis

Mid-infrared absorption and scattering properties of porcine dermis are quantified using quantum cascade laser-based goniometry.

scholarly journals Photoactive properties of supramolecular assembled short peptides

2019 ◽  
Vol 48 (16) ◽  
pp. 4387-4400 ◽  
Author(s):  
Bingbing Sun ◽  
Kai Tao ◽  
Yi Jia ◽  
Xuehai Yan ◽  
Qianli Zou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Short Peptides ◽  
Short Peptide ◽  
Review Current ◽  
Advanced Applications

In this review, current studies on the optical properties and modulation of photoactive short peptide self-assemblies, as well as their diverse advanced applications, are summarized.

Impacts of uniaxial strain on optical properties of graphene by first principles

2019 ◽  
Vol 12 (04) ◽  
pp. 1950056 ◽  
Author(s):  
Gongjie Xu ◽  
Yaole Wang ◽  
Gongming Song ◽  
Hongbin Dou
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Infrared Absorption ◽  
Electron Concentration ◽  
First Principles ◽  
Infrared Sensors ◽  
Strained Graphene ◽  
Polarization Of Light ◽  
Near Future ◽  
Armchair Direction

The impacts of strain along the zigzag and armchair directions on optical properties of graphene have been investigated theoretically by first principles. The relative changes of the refractive index achieve up to 1 with increasing polarized angle at some frequency points for both cases. It must be noted that strain along the armchair direction results in an additional infrared absorption peak at 1511[Formula: see text]cm[Formula: see text], because the electron concentration is inhomogeneous at the direction of atomic vibration. Thus, this work paves the way of strained graphene application in identifying polarization of light and infrared sensors in near future.

First-principles study on the phase transition temperature of X-doped (X = Li, Na or K) VO2

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64394-64399 ◽  
Author(s):  
Yuanyuan Cui ◽  
Yongxin Wang ◽  
Bin Liu ◽  
Hongjie Luo ◽  
Yanfeng Gao
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Infrared Absorption ◽  
First Principles ◽  
Electronic Structures ◽  
Near Infrared ◽  
Doping Element ◽  
First Principles Study

The calculated electronic structures and optical properties indicate that K can be selected as an appropriate doping element for VO2, since it can effectively lower the phase transition temperature as well as enhance the near-infrared absorption.

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