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Rajiv Singh

Rajiv Singh

Professor, Department of Materials Science and Engineering, University of Florida

Phone: (352) 392-1032

Fax: (352) 392-3771

Materials Science and Engineering
University of Florida
PO Box 116400
Gainesville, Florida 32611



Ph.D. from NCSU

Research Interests:

The Singh group explores a wide variety of different materials research areas, including: Innovative processing of materials; Laser processing; thin films; transient thermal phenomena; superconducting and dielectric(low K and high K) thin films; diamond and related materials, rapid thermal processing of elemental and wide band gap semiconductors, chemical-mechanical planarization, particulate coatings;semiconductor processing; modeling of transient thermal processing; flat panel displays, Angstrom scale advanced materials characterization, oxide thin films & electronics, gallium nitride and diamond crystal growth, nanoparticle synthesis and processing, front and back end semiconductor cleaning, phosphors and flat panel displays, thin film batteries.

Dr. Singh has written a program called S.L.I.M. (Simulation of Laser Interactions with Matter). This program can be used to simulate the thermal effects of laser beam interactions with any target of known composition, based on input parameters provided by the user.

Publications List:

Dr. Singh has written over 300 papers in materials science and engineering journals (Science, Physical Review B,, Applied Physics Letters, Journal of Materials Research, Materials Science and Engineering B, etc.) and Conference Proceedings. Published over 32 original, principal author papers in Applied Physics Letters and 7 papers published in Physical Review B Invited and Contributed Talks: Dr. Singh has presented more than 110 invited talks at international conferences (MRS, SPIE, TMS, APS, ASME, etc.) and academic and research institutions (MIT, Columbia, Purdue, ORNL, Westinghouse, etc.). Dr. Singh and/or his research group have presented over 250 technical papers at international conferences Books and Guest Editorships: ( Edited 5 books & Guest Editor of 5 Journal Issues)

1. R. K. Singh, D. Norton, J Cheung and J. Narayan and L.D. Laude , Eds "Laser Processing of Materials: Fundamentals and Advanced Applications, MRS Proceedings Vol 397, Pittsburgh, PA, 1996

2. N. M. Ravindra and R.K. Singh,"Transient Thermal Processing of Materials", TMS, Warrendale April. 1996

3. K. Gonsalves, M. Baraton, J.. Chen, J. Akkara, R. K. Singh and H. Hofmann , "Surface Controlled Nanoscale and Microscale Materials for High Value Added Applications, MRS Proceedings Vol 501 , Pittsburgh, PA, March 1998

4 .R.K. Singh, D. Lowdnes, J. Narayan, D. Chrisey , T. Kawai, and E. Fogarassy, Editors, Advances in Laser Ablation of Materials?, MRS Proceedings for Spring 1998 .

5. R. K. Singh and D. Kumar, "Advances in Pulsed Laser Deposition of Thin Films", Kluwer publishers, (1998)

1. Guest Editor of September 1994, Vol 23 issue of Journal of Electronic Materials titled " Novel Issues in Photonic Materials"

2. Guest Editor of Jan,96, Vol 1 issue of Journal of Electronic Materials titled "Ion and Laser Beam Processing of Electronic Materials

3. Guest Editor of Materials Science and Engr. B, on Laser Processing of Electronic Materials, Jan 1997

4. Guest Editor of November 1997 Issue of Journal of Electronic Materials on Low Energy Beam Processing of materials.

5. Guest Editor of September 1998 Issue of Journal of Electronic Materials on Chemical-Mechanical Polishing of Semiconductors.

Copyrighted Software: (2 copyrighted software packages) SLIM (Simulation of Laser Interaction with Materials, 36,000 coded lines, 1992) software. This first-of-its-kind software is being used by more than 50 R&D groups (IBM, LANL, ORNL, etc.) in the world. This software calculates the transient thermal induced laser effects like melting, crystallization and ablation of materials. Two new versions (one based on DOS C++ and the other on Windows platform) have been developed.

Femto-SLIM (32,000 coded lines, 1995, Tech: Partner: Univ. of Michigan.) New software to model ultrafast laser -solid interactions by taking into account the electron-phonon energy transfer. Due to nature of the short pulses, a two temperature (electron temperature and lattice temperature) simulation model has been developed to model the short pulse effects.This software is being jointly owned by the University of Florida and the University of Michigan and is done in active collaboration with the NSF Science and Technology Center for Ultrafast Optical Sciences (CUOS) at the University of Michigan.

Selected Patents: [from a total of 35 disclosures:& 14 patents, 10 awarded/pending(final stage) and 4 filed]

1. High Surface Area Metals and Ceramics [US Patent 5,473,138] . A unique laser technique has been developed to increase the surface areas of ceramics, metals and composites. This technique involves the use of multiple-pulse laser irradiation under controlled energy window conditions.

2. Enhanced Chemical Vapor Deposition of Diamond [US Patent 5,485,804 {1996}, Filed for worldwide patent} Novel colloidal method for large area nucleation, of diamond. This method has been used to make the world's largest single monolithic piece of diamond which has a diameter greater than 11" and weighs over 1600 carats.

3. Patterned Deposition of Thin Films [US Patent 5,501,877 {1996}, A method to create patterned deposition of diamond on substrates for micro-electronic applications.

4. Method for the Production of Scratch Resistant Articles and the Scratch Resistance Articles So Produced, [US Patent 5,492,769]. A method to harden thesurfaces of soft materials to improve wear properties.

5. Adherent Diamond Coated Cutting Tools [ US Patent # 5,558,789 (1996)] A critical problem of diamond adhesion has been solved by creating a three dimensional carbide-diamond interface to linearly grade thermal and mechanical stresses. A paper on this technique has published in the journal Science

Selected Publications in Materials Science and Engineering: (from a total of over 300)

R. K. Singh, D. R. Gilbert et. al., " Engineered Interface for Adherent Diamond Coatings", Science 272, 396-399 (1996) [ Unique method to improve adhesion of diamond on hard materials)

D. Kumar and R. K. Singh, "Observation of very high ( > 108 %) giant magnetoresitance ratios in Pr-Ba-Mn-O Systems. Phy. Rev B 56, 13666 (1997) ( [ Very high GMR values observed at relatively low fields]

R. K. Singh, D. Bhattacharya and P. Holloway "Sub-surface Heating Effects During Pulsed Laser Deposition of Materials", J. Appl. Physics, 70, 5433-5439 (1991) [New hypothesis to explain particulate generation phenomena during laser ablation of materials]

R. K. Singh S. Harkness et. al,"Existence of superconductivity in oxygen disordered YBaCuO", Phys. Rev B 51, 9155 (1995) [Unique electrical properties of chain disordered superconducting thin films]

P. Pronko, S.K. Dutta, D. Du, and R. K Singh, "Sub-nanosecond pulsed laser ablation of materials", J.Appl. Phys.Vol 78, 6233 (1996) [Simulation of electron-phonon coupling effects in short pulse processing Basis for Femto-SLIM]

R. K Singh and J. Narayan "Laser Technique for Deposition of Thin Films: Physics and Model", Phys.Rev.B, 41, 8843-8858 (1990) [First paper to explain relevant laser-solid-plasma interactions] R.K. Singh and J. Fitz-Gerald," Surface Composites: A New Class of Engineered Material", J. Materials Res, 12, March 1997 [Creation of a new class of Engineered Materials Awarded US patent]

R.K. Singh. S. Moon Jung and R. Hummell, "Novel Method to Obtain Large Grained Silicon Films on Amorphous Substrates for TFT Applications", Journal of the Electrochemical Society 145, 3963 (1998) [ Development of Patented Method for obtaining excellent electrical properties in silicon films Awarded US Patent]

F. Qian, P. Pronko and R.K. Singh, "Femto second Laser Based Deposition of Diamond Like Carbon Films", J. Appl. Phys. 86, 2281 (1999) [First publication of thin film deposition using femtosecond lasers]

J. Narayan, R. K. Singh et. al."Formation of Superconducting Thin Films by Laser Method", Appl. Phys. Lett, 51,1845 (1987) [Initial demonstration of this technique to fabricate superconducting films]

R. K. Singh et. al."In-Situ Processing of Epitaxial Y-Ba-Cu-O High Tc Superconducting Thin Films on (100) SrTiO3 and YSZ Substrates at 500 - 650°C", Appl. Phys. Lett., 54, 2271-2273 (1989). [ Identification of processing regimes to produce excellent quality superconducting thin films]

R. K. Singh, D. Gilbert, R. Tellshow et. al."Low Temperature Fabrication of Diamond Thin Films by Electron Cyclotron Resonance", Appl. Phys. Lett, 61, 2683-2685, (1992) [Demonstration of technologically significant conditions to fabricate diamond thin films]

R. K. Singh, F. Qian and B. M. Moudgil "Excimer Laser Deposition of Hydroxyapatite Thin Films, Biomaterials, 15, 522 (1994).[New method to fabricate adherent, dense biocompatible coatings] R.K. Singh et. al. "Novel Method for Simulating Laser-Solid Interactions in Semiconductors", Mat. Sci. and Engr., B3, 217-230 (1989) [New simulation method, computational basis for SLIM]

V. Craciun, and R. K. Singh, "In-situ ultraviolet assisted pulsed laser deposition of yttrium oxide thin films", Electrochemical Society Letters, 2, 446 (1999).[ Development of a novel PLD method to increase oxygenation of oxide thin films]

A. Srivastava, R. K. Singh et. al, " Enhanced properties during ultraviolet assisted pulsed laser deposition of BST thin films, Appl. Phys. Lett, October , 1999 [ Development of a novel PLD method to increase oxygenation of oxide thin films]

R. K. Singh et. al., "Nanofunctionalized Particulates for Controlled Drug Delivery Systems", Nature (submitted) [ A new class of particulates using nanothin biodegradable coatings that has been shown to improve the pulmonary drug delivery characteristics. Filed for world-wide patent].

J. Fitzgerald , R. K. Singh et. al., "Novel method for the Synthesis of thin film coatings on particulate materials", J. materials research, 14, 3281, (1999) [ Methodology for formation of nanofunctionalized particulates)

J. Fitz-Gerald, R. K. Singh et. al., "Significant reduction in brightness degradation of coated phosphors in yttrium oxysulfide systems", Appl. Phys Lett, 72, 1451 (98) [Particulate coatings reduce phosphor degradation for FPD applications]

Singh, R.K., Ata, A., Fitz-Gerald, J., and Hendrickson, W., et al. "Dry Coating Method Magnetically Assisted Impaction in a Randomly Turbulent Fluidized Bed," KONA, 15, 121-131 (1997)