Results 51 to 60 of about 225,412 (285)

Experimental and Theoretical Investigations of Molecular Structure and Vibrational Frequencies of Hypericin Molecule

Cumhuriyet Science Journal, 2017
In the present study, vibrational analysis ofhypericin molecule was experimentally performed using FT-IR spectroscopy. Themolecular structure, geometric parameters, vibrational wavenumbers, molecularelectrostatic potential and the highest and the lowest ...
Tuba Özdemir, Halil Gökçe
doaj   +1 more source

Infrared dynamic polarizability of HD+ rovibrational states [PDF]

, 2011
A calculation of dynamic polarizabilities of rovibrational states with vibrational quantum number $v=0-7$ and rotational quantum number $J=0,1$ in the 1s$\sigma_g$ ground-state potential of HD$^+$ is presented. Polarizability contributions by transitions
Amitay, Bakalov, Bakalov, Bakalov, Berkeland, Blatt, Chou, Colbourn, Dunn, Esry, Hilico, J.C.J. Koelemeij, Karr, Karr, Koelemeij, Korobov, Moss, Moss, Schiller, Schmidt, Shelkovnikov, Vanhaecke, Wing   +22 more
core   +3 more sources

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Vibrational Spectroscopy of Perovskite Ferroelectrics

Solids
Ferroelectric and antiferroelectric materials are technologically important by the richness of applications such as piezoelectric, pyroelectric, electro-optic, elasto-optic, and nonlinear optic effects.
Seiji Kojima
doaj   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

Raman Spectroscopy and 2DCOS Analysis of Unsaturated Fatty Acid in Edible Vegetable Oils

Applied Sciences, 2019
Raman spectroscopy has been applied to study unsaturated fatty acid in edible vegetable oils. The relative intensity ratio of characteristic vibrational bands has been investigated as a function of the content of totally unsaturated fatty acid ...
Jin Qiu, Hua-Yi Hou, Nguyen Thi Huyen, In-Sang Yang, Xiang-Bai Chen   +4 more
doaj   +1 more source

Influences of quantum mechanically mixed electronic and vibrational pigment states in 2D electronic spectra of photosynthetic systems: Strong electronic coupling cases

, 2015
In 2D electronic spectroscopy studies, long-lived quantum beats have recently been observed in photosynthetic systems, and it has been suggested that the beats are produced by quantum mechanically mixed electronic and vibrational states.
Fleming, Graham R., Fujihashi, Yuta, Ishizaki, Akihito   +2 more
core   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Enhancement of Signal‐to‐Background Ratio in Molecular Vibrational Signal Extraction by Stimulated Emission Depletion Mechanism

Advanced Photonics Research
Herein, a novel approach is presented to mitigate the fluorescence interference during the detection of vibrational signal via the stimulated emission depletion (STED).
Ge Wang, Lizhen Chen, Qiuqiang Zhan, Guangyou Fang, Yisen Wang   +4 more
doaj   +1 more source

The Ability of Vibrational Spectroscopy to Analyze Holistically the Food Matrix-Moving Away from the Concept of Individual Compounds

Methods and Protocols
The concepts of food matrix and holistic analysis have been used in a wide range of scientific disciplines to describe the sum of the parts of a whole that provide a specific property or functionality to the sample.
Daniel Cozzolino
doaj   +1 more source