Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Moishe S. Kitai"'
Publikováno v:
Applied Surface Science. 90:235-239
A model of cluster-type laser ablation of materials which as a result of the thermochemical reaction can be decomposed into solid and gaseous products, is developed on the basis of the solution of thermoconductivity and mechanical problems. The ablat
Publikováno v:
Applied optics. 42(13)
Like pure water, the water incorporated into cartilage and cornea tissue shows a pronounced dependence of the absorption coefficient on temperature. Alteration of the temperature by radiation with an IR free-electron laser was studied by use of a pul
Autor:
Jonathan M. Gilligan, Alexander P. Sviridov, Emil N. Sobol, Glenn S. Edwards, Norman Tolk, Moishe S. Kitai
Publikováno v:
Journal of biomedical optics. 8(2)
Light scattering is used to monitor the dynamics and energy thresholds of laser-induced structural alterations in biopolymers due to irradiation by a free electron laser (FEL) in the infrared (IR) wave- length range 2.2 to 8.5 mm. Attenuated total re
Autor:
Alexander P. Sviridov, Jonathan M. Gilligan, Glenn S. Edwards, Emil N. Sobol, Moishe S. Kitai
Publikováno v:
Biomedical Applications of Free-Electron Lasers.
The effect of temperature dependent shift of water absorption band, known for pure water, has been examined, for the first time, for tissue water, using the IR Free Electron Laser radiation. Cooling kinetics of cartilage and cornea irradiated was mea
Autor:
Emil N. Sobol, Glenn S. Edwards, Norman Tolk, Jonathan M. Gilligan, Alexander P. Sviridov, Moishe S. Kitai
Publikováno v:
SPIE Proceedings.
We consider the denaturation process as an alteration in ordered organization of tissue structure and study the threshold and kinetics of laser-induced denaturation in cartilage and cornea undergoing irradiation from a free electron laser (FEL) in th
Publikováno v:
SPIE Proceedings.
Optical parameters (scattering coefficient s, absorption coefficient k and scattering anisotropy coefficient g) of hyaline cartilage were studied for the first time. Optical properties of human and pig nasal septum cartilage, and of bovine ear cartil
Autor:
Nick Jones, Thomas E. Milner, Moishe S. Kitai, Alexander P. Sviridov, Emil N. Sobol, Brian J. F. Wong
Publikováno v:
SPIE Proceedings.
We develop a theoretical model to calculate the temperature field and the size of modified structure area in cartilaginous tissue. The model incorporates both thermal and mass transfer in a tissue regarding bulk absorption of laser radiation, water e
Autor:
Moishe S. Kitai
Publikováno v:
SPIE Proceedings.
The femtosecond visible laser radiation ranked among the possible modem light sourses for the optical microlithography. For the intensive femtosecond laser radiation the multyphoton excitation of high molecular electron states prevails over the linea
Autor:
Nick Jones, Emil N. Sobol, Moishe S. Kitai, Alexander P. Sviridov, Zenger Vg, Alexy N. Nasedkin, Alexander I. Omelchenko, Victor N. Bagratashvili, M. Isaev, V. Karlov, A. B. Shekhter
Publikováno v:
SPIE Proceedings.
We examine thermal effect of a 2.1 micrometer Holmium laser on the internal stress and shape of cartilage. For 2.1 microns radiation, the absorption depth is more by an order of magnitude than that, for 10 micrometer radiation. We have studied the in
Publikováno v:
SPIE Proceedings.
The quantitative model of PHMA ablation is developed. The photochemical reactions heating of the polymer film and mechanical stresses are taken into consideration. The increasing of the optical absorption during the photochemical reaction caused by e