Zobrazeno 1 - 10
of 20
pro vyhledávání: '"M. S. Kitai"'
Publikováno v:
Journal of Applied Spectroscopy. 87:401-406
Possible modifications of chromophore structures with nonlinear optical properties by bonding F atoms and F-containing groups to the acceptor site of the molecules are considered. Quantum chemical calculations of dipole moments and first hyperpolariz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97247e3c43716d9355d482c6abcde9f9
https://doi.org/10.1007/s10812-020-01014-1
https://doi.org/10.1007/s10812-020-01014-1
Autor:
Maxim Nazarov, M. S. Kitai
Publikováno v:
Radiophysics and Quantum Electronics. 61:374-381
The power dependence α(ν) ∝ νμ, where μ > 0 is the power exponent which is noninteger in the general case, is observed for amorphous polymers with a small absorption coefficient α in the low-frequency part of the terahertz range, which approx
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b874302e3a64178f8fe41f4958f42735
https://doi.org/10.1007/s11141-018-9898-z
https://doi.org/10.1007/s11141-018-9898-z
Autor:
Yu. E. Pogodina, P. V. Konarev, Victor I. Sokolov, W. W. Volkov, Maxim Nazarov, E. V. Polunin, M. S. Kitai, Ya. V. Zubavichus, A. A. Zharov
Publikováno v:
Journal of Applied Spectroscopy. 85:374-380
Novel amorphous perfluorinated polymers are synthesized and characterized using terahertz (THz) and x-ray spectra. The polymerization of such polymers in which all H atoms are replaced by F is examined. Their optical properties in the THz range show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a5aa4a504f2abb3890329e9e9a3d58a
https://doi.org/10.1007/s10812-018-0660-2
https://doi.org/10.1007/s10812-018-0660-2
Publikováno v:
Radiophysics and Quantum Electronics. 60:409-416
We propose a method for determination of the boundary temperatures of transitions in the structure of polymers by means of analyzing the refractive index of these materials in the terahertz band. The temperatures of glass transition, crystallization,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7e34e5c018f34fc481de235b08cfff8
https://doi.org/10.1007/s11141-017-9810-2
https://doi.org/10.1007/s11141-017-9810-2
Publikováno v:
Quantum Electronics. 45:927-932
The optical quality of the eye cornea surface after performing the laser vision correction essentially depends on the characteristic roughness scale (CRS) of the ablated surface, which is mainly determined by the absorption coefficient of the cornea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94fe26b798c169e88f0e286bc6034482
https://doi.org/10.1070/qe2015v045n10abeh015732
https://doi.org/10.1070/qe2015v045n10abeh015732
Autor:
S. A. Bulgakova, D. A. Sapozhnikov, M. S. Kitai, Maxim V. Bermeshev, V. I. Bykov, B. F. Shklyaruk, Maxim Nazarov
Publikováno v:
Radiophysics and Quantum Electronics. 57:881-890
The basic sizes characterizing the morphology of a few practically important synthetic organic polymers in the glassy and viscoelastic states are confronted with the maxima of the absorption spectra in the terahertz frequency range. These sizes are d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e588e843fd04d34e666154a4f58797bb
https://doi.org/10.1007/s11141-015-9572-7
https://doi.org/10.1007/s11141-015-9572-7
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
Terahertz refraction and absorption spectra were measured for isotactic and syndiotactic polypropylene over a frequency range of 0.1–4 THz and for 140–450°K temperatures. Glass transition, crystallization and melting temperatures are clearly pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3442fff73a37902ee50538046691947
https://doi.org/10.1109/irmmw-thz.2016.7758788
https://doi.org/10.1109/irmmw-thz.2016.7758788
Autor:
S. I. Molchanova, M. S. Kitai
Publikováno v:
Polymer Science Series A. 54:195-200
For a series of polymers, including crosslinked polymers, based on fluoro-containing acrylic monomers, absorption coefficients are measured in the visible and near-IR ranges. The relationship between the intensities of observed absorption bands and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bf1c0b946a8b28a9911b21fc3af029e
https://doi.org/10.1134/s0965545x12030042
https://doi.org/10.1134/s0965545x12030042
Publikováno v:
Journal of Engineering Physics and Thermophysics. 76:343-351
A study is made of the influence of the mass transfer of water on the temperature field occurring in cartilaginous tissue under the action of laser pulses. Two different mechanism of mass transfer of water in cartilaginous tissue (molecular‐diffusi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6b52e3ff382647ab4045f7bb9c37478
https://doi.org/10.1023/a:1023657302475
https://doi.org/10.1023/a:1023657302475
Autor:
M S Kitai, Emil N. Sobol
Publikováno v:
Quantum Electronics. 28:633-636
A theoretical model is developed for the calculation of the temperature fields and determination of the size of a zone with structural changes in the cartilaginous tissue. The model is based on a simultaneous analysis of the heat and mass transfer pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d9fde6004e031f007734bef73f71a84
https://doi.org/10.1070/qe1998v028n07abeh001281
https://doi.org/10.1070/qe1998v028n07abeh001281