Results 211 to 220 of about 1,458 (254)

Anharmonic effects control interaction of carbyne confined in carbon nanotubes shaping their vibrational properties. [PDF]

Nat Commun
Parth E, Corradini A, Cui W, Romanin D, Schuster C, Freytag C, Shi L, Yanagi K, Calandra M, Pichler T.   +9 more
europepmc   +1 more source

Reactions of the Criegee Intermediate Methyl Vinyl Ketone Oxide with HC(O)OH: Infrared Spectra of the Hydrogen-Transfer Adduct 2-Hydroperoxybut-3-en-2-yl Formate. [PDF]

J Phys Chem A
Hsiao YL, Lee YP.
europepmc   +1 more source

How Vibrational Notations Can Spoil Infrared Spectroscopy: A Case Study on Isolated Methanol. [PDF]

ACS Phys Chem Au
Dinu DF, Oenen K, Schlagin J, Podewitz M, Grothe H, Loerting T, Liedl KR.   +6 more
europepmc   +1 more source

Influence of phonon anharmonicity on Raman spectra of Cu₂ZnSn(S,Se)₄ polycrystalline thin films through computational study. [PDF]

Sci Rep
Romaniuk YA, Babichuk IS, Korotyeyev VV, Yukhymchuk VO, Dzhagan VM, Virko SV, Semenenko MO, Stetsenko MO, Tiutiunnyk A, Pérez LM, Laroze D.   +10 more
europepmc   +1 more source

Separation of harmonic sounds using linear models for the overtone series

IEEE International Conference on Acoustics Speech and Signal Processing, 2002
A signal processing method is described, which separates harmonic sounds by applying linear models for the overtone series of sounds. Time-varying sinusoidal parameters are estimated in an iterative algorithm which is initialized using a multipitch estimator that finds the number of concurrent sounds and their frequency components.
Tuomas Virtanen, Anssi Klapuri
exaly   +4 more sources

Vibration Overtone Hyperpolarizability Measured for H2 Using Electric Field Induced Second Harmonic Generation

, 2020
The vibrational contribution to the second hyperpolarizability (γ) of gas phase H2 was measured using electric field induced second harmonic generation. Measurements were made for the pure vibrational 3-0 Q(J) overtone transitions (v=0,J → v’=3,J for J = 0,1,2,3). Measured intensities were found to be 4-14% larger than ab initio calculations. The first
Ellis, Rachel
openaire   +2 more sources

Inelastic neutron scattering spectra of alkali metal (Na, K) bifluorides: The harmonic overtone of v3

Chemical Physics, 1982
Abstract Inelastic neutron scattering spectra of MFHF (M  Na and K) have been measured up to energy transfers of ca. 4000 cm−1 Both 0 → 1 and 0 → 2 transitions of the bending (v2), and antisymmetric stretching (v3) modes were observed. A normal harmonic (i.e.
Thomas C Waddington, Joseph Howard, John Tomkinson   +2 more
exaly   +2 more sources

A new nonlinear coupling of the fundamental and its harmonic overtone thickness shear modes for improvement of resonator Q

2012 IEEE International Ultrasonics Symposium, 2012
Ultra high frequency resonators have higher noise levels due to their greater miniaturization and higher power density. This paper proposes a new method using nonlinear acoustic coupling for improving the resonator Q and hence reducing noise levels in third overtone thickness shear resonators.
exaly   +2 more sources

Suppression of lower harmonic responses on overtone AT-cut quartz crystal resonators

Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English Translation of Denshi Tsushin Gakkai Ronbunshi), 2000
Yoshiaki Tanaka
exaly   +2 more sources