Collective vibrational modes in molecular assembly of DNA and its application to biological systems. Low frequency Raman spectroscopy

1985 ◽  
Vol 82 (1) ◽  
pp. 531-535 ◽  
Author(s):  
Hisako Urabe ◽  
Hideyuki Hayashi ◽  
Yasunori Tominaga ◽  
Yoshifumi Nishimura ◽  
Kenji Kubota ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Biological Systems ◽  
Low Frequency ◽  
Molecular Assembly ◽  
Vibrational Modes ◽  
Collective Vibrational Modes

scholarly journals Raman spectroscopy studies of the terahertz vibrational modes of a DUT-8 (Ni) metal–organic framework

2017 ◽  
Vol 19 (47) ◽  
pp. 32099-32104 ◽  
Author(s):  
Alexander Krylov ◽  
Alexander Vtyurin ◽  
Petko Petkov ◽  
Irena Senkovska ◽  
Mariia Maliuta ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Metal Organic Framework ◽  
Low Frequency ◽  
Molecular Dynamic Simulations ◽  
Vibrational Modes ◽  
Dynamic Simulations ◽  
Metal Organic ◽  
Flexible Metal ◽  
Spectroscopy Studies ◽  
Organic Framework

Raman spectroscopy and Molecular Dynamic simulations were applied to study low-frequency vibrations of a flexible metal–organic framework DUT-8(Ni).

A Low Frequency Study of the Vibrational Modes in Alkalisilicate Glasses by Raman Spectroscopy

1995 ◽  
Vol 407 ◽  
Author(s):  
R. Sommer ◽  
J. Toulouse ◽  
H. Jain
Keyword(s):  
Raman Spectroscopy ◽  
Force Constant ◽  
Density Of States ◽  
System Analysis ◽  
Low Frequency ◽  
Boson Peak ◽  
Single Parameter ◽  
Silicate Glasses ◽  
Vibrational Modes ◽  
Peak Region

ABSTRACTWe have performed a study on low frequency modes in several alkali silicate glasses by Raman spectroscopy. The Boson peak region is analyzed with a single parameter ω0 which is believed to characerize the density of states of the system. Analysis of the dependence of ω0 on the nature and concentration of the alkali suggests that the position of the Boson peak is essentially governed by the ratio “force constant” over “mass” of localized oscillator modes. At lower frequency (below 30 cm−1), the “excess” intensity can be explained by considering secondorder processes of the same vibrational modes, superimposed on other (possibly relaxational) modes.

scholarly journals Low-frequency collective vibrational modes of asparagine by terahertz time-domain spectroscopy

2006 ◽  
Vol 55 (8) ◽  
pp. 4091
Author(s):  
Ma Shi-Hua ◽  
Shi Yu-Lei ◽  
Xu Xin-Long ◽  
Yan Wei ◽  
Yang Yu-Ping ◽  
...  
Keyword(s):  
Time Domain ◽  
Low Frequency ◽  
Vibrational Modes ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Collective Vibrational Modes

scholarly journals Low frequency vibrational modes of oxygenated myoglobin, hemoglobins, and modified derivatives.

1994 ◽  
Vol 269 (49) ◽  
pp. 31047-31050
Author(s):  
S Jeyarajah ◽  
L M Proniewicz ◽  
H Bronder ◽  
J R Kincaid
Keyword(s):  
Low Frequency ◽  
Vibrational Modes

scholarly journals Moduli and modes in the Mikado model

Soft Matter ◽  
2021 ◽  
Author(s):  
Brian Tighe ◽  
Karsten Baumgarten
Keyword(s):  
Shear Modulus ◽  
Mechanical Model ◽  
Low Frequency ◽  
Vibrational Modes ◽  
Prior Work ◽  
Fiber Networks ◽  
Elastic Shear Modulus ◽  
Flexible Fiber ◽  
Elastic Shear

We determine how low frequency vibrational modes control the elastic shear modulus of Mikado networks, a minimal mechanical model for semi-flexible fiber networks. From prior work it is known that...

Temperature Dependent Raman Scattering in CsTiOAsO4 Single Crystal

1995 ◽  
Vol 398 ◽  
Author(s):  
A.R. Guo ◽  
C.-S. Tu ◽  
Ruiwu Tao ◽  
R.S. Katiyar ◽  
Ruyan Guo ◽  
...  
Keyword(s):  
Soft Mode ◽  
Low Frequency ◽  
High Mobility ◽  
Vibrational Modes ◽  
Frequency Range ◽  
Temperature Dependent ◽  
Higher Symmetry ◽  
Phonon Spectra ◽  
Symmetry Structure ◽  
Increasing Temperature

ABSTRACTThe longitudinal (LO) and transverse (TO) A1 vibrational modes have been measured between 30-1200 cm−1 as a function of temperature (30–1240 K) for CsTiOAsO4 (CTA). The frequencies for all corresponding Raman components shifted to lower frequencies on increasing the temperature, however, there is no typical soft-mode like behavior observed in the measured frequency range. The relative intensities of the low frequency bands increase dramatically with increasing temperature due to high mobility of Cs+ ion. A higher symmetry structure taking place above 940K has been confirmed by changes in the phonon spectra.

Sign in / Sign up

Export Citation Format

Share Document