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Jack and Pearl Resnick
Institute for Advanced
Science and Technology
Ramat-Gan 52900
Israel

Yuri Kaganovskii Yuri
Phone: +972-3-5317864
Room: 103
 
Research

  • Photo-induced heat and mass transfer in optical materials.

  • Laser micro fabrication (microlenses, ordered two-dimensional and three-dimensional periodic structures for integrated optics).

  • Diffusion in nanomaterials; surface and grain boundary diffusion; reactive interdiffusion; kinetics of intermetallic growth; formation of chemical compounds enhanced by surface and grain boundary diffusion.

  • Light scattering by solid surfaces and thin dielectric layers, optical modeling of remote sensing studies.


Photo-induced heat and mass transfer in optical materials

  Our research concerns physical phenomena accompanying laser recording and fabrication of nano-optical components in glasses and semiconductors doped by metal nanoclusters. During laser irradiation metal clusters (in a transparent glass matrix or in the surface layer of a nontransparent semiconductor) absorb light energy. Absorption leads to high-temperature heating of the absorbing species and leads to permanent changes in the optical properties of the substrate. Huge thermodynamic driving forces appear, consisting of compressive stresses and local electric and temperature field gradients, which induce redistribution of carriers between the clusters and the matrix, can lead to their capture in the matrix, and mass transfer in the irradiated volume; all this occurring even during a very short single laser pulse. The principles governing such laser-induced mass transfer are of importance both for the physics of light interaction with solids and for many applications of the mass transfer process in integrated optics, nano-optics, laser welding, etc.

Laser micro fabrication

  Our studies open opportunities for fabrication of various optical elements using cw and pulsed laser beams. Some examples are shown below, such as AFM images of micro lenses and lens arrays produced in metal nanoparticle doped glasses; 1D and 2D gratings produced in thin metal films, nano-lines and nano-ridges, etc.

Micro lenses and lens arrays produced by a focused beam of Argon laser in silver doped glasses.

 

1D and 2D gratings produced by a pulsed laser in gold films on a glass surface. Depending on the beam power and film thickness we can produce “positive” or “negative” gratings

Reactive interdiffusion

We study the kinetics and mechanisms of reactive interdiffusion in nano-materials (NMs) used in microelectronics, nano-photonics, and catalysis. Reactive interdiffusion is accompanying by formation of chemical compounds. The rate of compound formation is controlled either by diffusion mobility of reactants, or by the kinetics of chemical reaction at the interfaces. One of our research goals consist in detection and measuring of surface and interfacial contributions in the compound growth kinetics.

(a) - Typical SEM image of two-phase diffusion zone in Cu - Sn thin film couple with overlap (T=200oC; t=1h, thickness of Cu-film, H=50nm); (b) - fragment of the spreading front of Cu3Sn phase. Penetration of the phase along grain boundaries in the Cu film is clearly seen.
Publications

  • Yu. Kaganovskii, I. Antonov, M. Rosenbluh, J. Ihlemann, A. A. Lipovskii. Two- and three-dimensional photonic crystals produced by pulsed laser irradiation in silver-doped glass. - Solid State Phenomena, 2004, v. 99-100, p. 65-72.

  • D. Blumberg, V. Freilikher, Yu. S. Kaganovskii, A. Kotlyar, A. A. Maradudin, Backscattering of light from a dielectric layer on reflecting substrate. - Optics Letters, 2004, v. 29, No 12, p. 1372-1374.

  • L.N. Paritskaya, Yu. Kaganovskii and V.V. Bogdanov. Size-Dependent Interdiffusion in Nanomaterials. - Solid State Phenomena, 2004, v. 101-102, p. 123-130.

  • I. Beszeda, D. L. Beke, Yu. Kaganovskii. Kinetics of growth and lateral spreading of a spinel layer around NiO particles on Al2O3 substrate. – Surface Sci., 2004, v. 569, p. 5 – 11.

  • I. Beszeda, D. L. Beke, E. G. Gontier-Moya, Yu. S. Kaganovskii, D. Ianetz. Calculation of surface self-diffusion coefficients from AES data on decay of thin metal films. – Defect and Diff. Forum, 2005, v. 237-240, p. 727-732.

  • Yu. Kaganovskii, E. Mogilko, A. Ofir, A.A. Lipovskii, and M. Rosenbluh. Diffusion of silver in silicate glass and clustering in hydrogen atmosphere. – Defect and Diff. Forum, 2005, v. 237-240, p. 689-694.

  • L. N. Paritskaya, V. V. Bogdanov, Yu. Kaganovskii , and W. Lojkowski. Kinetics of Competitive Phase Growth in Cu-Ni-Sn System, - Defect and Diff. Forum, 2005, v. 237-240, p. 456-461.

  • V. I. Ivanenko, E. P. Lokshin, st1:place w:st="on">I. A. Udalova, M. Rosenbluh, Yu. Kaganovskii, S. V. Zdobina, V. T. Kalinnikov. Synthesis of fine powders of KTP-group compounds of stoichiometric composition. - PPowder Technology, 2006, v. 166, No.1, pp. 24-29.

  • Yu. Kaganovskii, H. Vladomirsky, M. Rosenbluh. Periodic lines and holes produced in thin Au films by pulsed laser irradiation. JJournal of Applied Physics, 2006, v.100, No.4, p. 44317-1-7.

  • D. G. Blumberg, V. Freilikher, J. Ben-Asher, J. Daniels, Yu. Kaganovskii, A. Kotlyar, and L. Vulfson. Microwave subsurface remote sensing in the st1:place w:st="on">Negev Desert:: monitoring of soil water-content. – Waves in Random and Complex Media, 2006, v. 16, No. 3, p.179 – 203.

  • Yu. Kaganovskii, A. Lipovskii, M. Rosenbluh, V. Zhurikhina. Formation of nanoclusters through silver reduction in glasses: The model. – Journal of Non-Crystalline Solids, 2007, v. 353, p. 2263–2271.

  • Yu. Kaganovskii, A. A. Lipovskii, M. Rosenbluh, V. Zhurikhina. Spatially Periodic Formation of Nanoparticles in Metal-Doped Glasses. – Defect and Diffusion Forum, 2007, v. 263, p. 57-61.

  • V. Freilikher, Yu. Kaganovskii, and A. Kotlyar. Light scattering from particles located under a rough dielectric layer. - J. Opt. Soc. Am. A, 2007, v. 24, p.1965-1968.

  • Yu. Kaganovskii, L.N. Paritskaya, V.V. Bogdanov, W. Lojkowski. Stress relaxation mechanisms during Cd21Ni5 intermetallic growth under high hydrostatic pressure. - Defect and Diffusion Data, 2007, v. 264, p. 123-132.

  • V. Zhurikhina, A. Lipovskii, Yu. Kaganovskii, Formation of glass-metal metamaterials via reactive diffusion: a model, Proceedings of SPIE, 2007, v. 6581, p. 65810C (8 pages).

  • Yu. Kaganovskii, E. Mogilko, A.A. Lipovskii, M.Rosenbluh. Formation of nanoclusters in silver-doped glasses in wet atmosphere. - Journal of Physics: Conference Series, 2007, v. 61, p. 508-12.

  • Yu. Kaganovskii, H. Vladomirsky, and M. Rosenbluh. Fabrication of periodic structures in thin metal films by pulsed laser irradiation. - Journal of Nanophotonics, 2007, No 1, 011690.

  • A. A. Lipovskii a, Yu. Kaganovskii, V. G. Melehin, D. K. Tagantsev, O. V. Yanush. Electrooptical Kerr phenomenon and Raman spectroscopy of one lithium–niobium–silicate glass-forming system. - J. Non-Crystalline Solids, 2008, v. 354, p. 1245-49.

  • Y. Samoilenko, Yu. Kaganovskii, A. A. Lipovskii, E. Mogilko, M. Rosenbluh. CW laser discoloration of X-ray irradiated silver doped silicate glasses. – Optical Materials, 2008, v. 30, p. 1715-1722,.

  • L. N. Paritskaya and Yu. S. Kaganovskii. Scholar, teacher, and scientific romantic. Powder Metallurgy and Metal Ceramics, 2008, Vol. 47, p.638-645.

  • Yu. S. Kaganovskii, L. N. Paritskaya, and V. V. Bogdanov. Lateral propagation of intermetallic phases in coarse- and nano-grained Cu/Sn diffusion couples. - Powder Metallurgy and Metal Ceramics, 2008, Vol. 47, p.652-659.

  • N. Perkas, G. Amirian, G. Applerot, E. Efendiev, Yu. Kaganovskii, A. V. Ghule, Bo-Jung Chen, Yong-Chien Ling and A. Gedanken. Depositing silver nanoparticles on/in a glass slide by the sonochemical method. – Nanotechnology, 2008, v. 19, 435604 (9 pp).


Collaboration

  • D. L. Beke, Department of Solid State Physics, University of Debrecen, Hungary
    ssphys.science.unideb.hu/personal_sci.php

  • A. A. Lipovskii, Department of Solid State Physics, St-Petersburg Polytechnical University,Russia
    http://www.spbstu-eng.ru

  • L. N. Paritskaya, V. V. Bogdanov, Department of Crystal Physics, Karazin Kharkov University, Ukraine.
    www.univer.kharkov.ua/en

  • W. Lojkowski, High Pressure Research Center, 01-142 Warsaw, Poland www.unipress.waw.pl/nano/index.php

    • CV

    Full CV: PDF

    Educational Background:

    1959-1964              Kharkov State University, Physical Faculty

                                   M. Sc. Degree in Solid State Physics

    1967-1970              Kharkov State University

                                    Ph.D. Degree (Candidate of Science) in Crystallography and Crystal Physics

    1984                        Kharkov State University

                                    Doctor of Science (D.Sc.) in Solid State Physics

     Area of expertise:

                                   Diffusion in Solids

                                   Surface Phenomena

                                   Thin Solid Films

                                   Light Scattering in Solids and at Surfaces

                                   Laser microfabrication

     

    Positions Held:

    2000 - present

    Associate Professor at the Department of Physics, Bar-Ilan University

    1995 - 1999

    Researcher at the Department of Physics, Bar-Ilan University

    1988 - 1995

    Professor at the Dept. of Crystal Physics, Kharkov State University

    1992 - 1995

    Head of the Electron Microscopy Group, Institute for Single Crystals, N.A.S. of the Ukraine

    1984 - 1988

    Head of the Laboratory of High-Temperature Processes in Crystals, Kharkov State University

    1969 - 1984

    Senior Research Scientist, Department of Crystal Physics, Kharkov State University

    Visiting Positions:

    1992 (Febr.-June)       

    Department of Solid State Physics, Kossuth-Lajosh University, Debrecen, Hungary.

    2000 (September)

    Department of Solid State Physics, Kossuth-Lajosh University, Debrecen, Hungary.