Laser Spectroscopy and Nanoparticle Research at The University of Texas in Austin

Publications

Bruce, M.R.; Layne, W.B.; Whitehead, C.A.; Keto, J.W., "Radiative lifetimes and collisional deactivation of two-photon excited xenon in argon and xenon",
J. Chem. Phys., Vol. 92, p 2917, 1990

Bruce, M.R.; Layne, W.B.; Keto, J.W., "A multichannel harpoon model for reactive quenching of Xe 5p/sup 5/np by Cl/sub 2/", J. Chem. Phys., Vol. 92, p428, 1990

Bruce, M.R.; Layne, W.B.; Meyer, E.; Keto, J.W., "Reactive quenching of two-photon excited xenon atoms by Cl/sub 2/", J. Chem. Phys., Vol. 92, p420, 1990

Joppien, M.; Groteluschen, F.; Kloiber, T.; Lengen, M.; Moller, T.; Wormer, J.; Zimmerer, G.; Keto, J.; Kykta, M.; Castex, M.C., "Some aspects of the photoluminescence properties of solid argon. Solids versus clusters in a supersonic beam", J. Lumin., Vol. 48-49, p601, 1991

Borysow, J.; Golnabi, H.; Taylor, R.H.; Keto, J.W., "Techniques for measuring small changes in the intensity of a pulsed laser", Appl. Opt., Vol. 31, p2814, 1992

Whitehead, C.A.; Pournasr, H.; Keto, J.W., "Two-photon absorption in liquid xenon", Phys. Rev. B, Condens. Matter, Vol. 47, p4979, 1993

Karnbach, R.; Castex, M.C.; Keto, J.W.; Joppien, M.; Wormer, J.; Zimmerer, G.; Moller, T., "Excited state dynamics of Kr/sub N/ clusters probed with time- and energy-resolved photoluminescence methods", Chem. Phys. Lett., Vol. 203, p248, 1993

C.B. Juang, H. Cai, M. F. Becker, J. W. Keto, and J. R. Brock, "Synthesis of ultrafine glass particles by laser ablation of microspheres," Nanostruct. Mater., Vol. 4, p569, 1994

C.B. Juang, H. Cai, M. F. Becker, J. W. Keto, and J. R. Brock, "Synthesis of nanometer glass particles by pulsed-laser ablation of microspheres, " Appl. Phys. Lett. 65, 40 (1994).

C.B. Juang, H. Cai, M. F. Becker, J. W. Keto, and J. R. Brock, "Production of ultrafine particles by laser ablation of microspheres, " Proceedings of the Joint NSF-NIST Conference on Ultrafine Particle Engineering (25-27 May, 1994), NSF, Arlington VA (1994).

Whitehead, C.A.; Pournasr, H.; Bruce, M.R.; Hong Cai; Kohel, J.; Layne, W.B.; Keto, J.W., "Deactivation of two-photon excited Xe(5p/sup 5/6p,6p',7p) and Kr(4p/sup 5/5p) in xenon and krypton",J. Chem. Phys., Vol. 102, p1965, 1995

Michael F. Becker, James R. Brock, and John W. Keto, Process for the production of nanoparticles, U. S. Patent # 5,585,020, Dec. 17, 1996.

Guttroff, G.; Keto, J.W.; Shih, C.K.; Anselm, A.; Streetman, B.G., "A design of reflection scanning near-field optical microscope and its application to AlGaAs/GaAs heterostructures" Appl. Phys. Lett., Vol.68, p3620, 1996

Bhatia, P.S.; Keto, J.W., "Precisely tunable, narrow-band pulsed dye laser", Appl. Opt., Vol. 35, p4152, 1996

Pournasr, H.; Holder, J.P.; Keto, J.W., "Even-parity excitons in condensed xenon", Phys. Rev. B, Condens. Matter, Vol. 54, p864, 1996

Keto, J.W.; Hong Cai; Kykta, M.; Chen Lei; Moller, T.; Zimmerer, G., "Two-photon spectroscopy of xenon dimers in supersonic jets", J. Chem. Phys., Vol. 107, p6080, 1997

Bhatia, P.S.; Holder, J.P.; Keto, J.W., "Highly sensitive optically heterodyned, Raman-induced Kerr-effect spectrometer using pulsed lasers", J. Opt. Soc. Am. B, Opt. Phys. ,Vol. 14, p263, 1997

H. Cai, N. Chaudhary, J. Lee, M.F. Becker, J.R. Brock, and John W. Keto, "Generation of Metal Nanoparticles by Laser Ablation of Microspheres", J. of Aerosol Science 29, 627, 1998

Becker, M.F.; Brock, J.R.; Hong Cai; Henneke, D.E.; Keto, J.W.; Jaemyoung Lee; Nichols, W.T.; Glicksman, H.D., "Metal nanoparticles generated by laser ablation" Nanostruct. Mater., Vol.10, p853, 1998

Becker, M.F.; Brock, J.R.; Hong Cai; Henneke, D.; Hilsz, L.; Keto, J.W.; Jaemyoung Lee; Nichols, W.T.; Glicksman, H.D., "Nanoparticles generated by laser ablation" in Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178), p151, 1998

Htoon, H.; Hongbin Yu; Kulik, D.; Keto, W.J.; Baklenov, O.; Holmes, A.L., Jr.; Streetman, B.G.; Shih, C.K., "Quantum dots at the nanometer scale: Interdot carrier shuffling and multiparticle states", Phys. Rev. B, Condens. Matter, Vol.60, p11026, 1999

Bhatia, P.S.; Keto, J.W., "Pressure and power dependence of the optically heterodyne Raman-induced Kerr effect line shape", Phys. Rev. A, At. Mol. Opt. Phys., Vol. 59, p4045, 1999

Bhatia, P.S.; McCluskey, C.W.; Keto, J.W., " Calibration of a computer-controlled precision wavemeter for use with pulsed lasers", Appl. Opt., Vol. 38, p2486, 1999

Kohel, J.; Keto, J.W., "Energy disposal in the two-photon laser-assisted reaction in xenon and chlorine gas mixtures", J. Chem. Phys., Vol.113, p10551, 2000

W.T. Nichols, G. Malyavanatham, M.P. Beam, D.E. Henneke, J. R. Brock, M. F. Becker, and John W. Keto, "Synthesis of nanostructured WC films by supersonic impaction of nanoparticle aerosols"  in Nanophase and Nanocomposite Materials III. Symposium (Materials Research Society Proceedings Vol.581, p193, 2000

Htoon, H.; Hongbin Yu; Kulik, D.; Keto, J.W.; Baklenov, O.; Holmes, A.L., Jr.; Shih, C.K., "Nano-photoluminescence studies of self-assembled quantum dots" in Self-Organized Processes in Semiconductor Alloys. Symposium (Materials Research Society Symposium Proceedings Vol.583, p105, 2000)

Htoon, H.; Keto, J.W.; Baklenov, O.; Holmes, A.L., Jr.; Shih, C.K.,"Cross-sectional nanophotoluminescence studies of Stark effects in self-assembled quantum dots" Appl. Phys. Lett., Vol.76, p700, 2000

Nichols, W.T.; Malyavanatham, G.; Henneke, D.E.; Brock, J.R.; Becker, M.F.; Keto, J.W.; Glicksman, H.D., "Gas and pressure dependence for the mean size of nanoparticles produced by laser ablation of flowing aerosols"  J. Nanoparticle Res., Vol.2, p141, 2000

W.T. Nichols, John W. Keto, D.E. Henneke, J. R. Brock, G. Malyavanatham, M. F. Becker, and H.D. Glicksman, "Large-scale production of nanocrystals by laser ablation of microparticles in a flowing aerosol" Appl. Phys. Lett. 78, p1128 (2001)

J. Lee, M.F. Becker, and John W. Keto, J., "Dynamics of laser ablation of microparticles prior to nanoparticle generation" J. Appl. Phys., 89(12), p8146, 2001

W.T. Nichols, D.T. O'Brien, G. Malyavanatham, M. F. Becker, and John W. Keto in Mat. Res. Soc. Symp. Proc., Nanophase and Nanocomposite Materials IV, edited by S. Komarneni, R.A. Vaja, G.Q. Lu, J.-I. Matsushita, and J.C. Parker, p209, MRS, 703 Warrendale, PA, 2002

Nichols, W.T.; O'Brien, D.T.; Malyavanatham, G.; Becker, M.F.; Keto, J.W., "Supersonic nanocrystal deposition for nanostructured materials" in Nanophase and Nanocomposite Materials IV. Symposium (Materials Research Society Symposium Proceedings Vol.703) p209, 2002

Nichols, W.T.; Malyavanatham, G.; Henneke, D.E.; O'Brien, D.T.; Becker, M.F.; Keto, J.W."Bimodal nanoparticle size distributions produced by laser ablation of microparticles in aerosols" J. Nanoparticle Res., Vol. 4, p423, 2002

D.E. Henneke, G. Malyavanatham, D. Kovar, D.T. O'Brien, M.F. Becker, W.T. Nichols, and J.W. Keto; "Stabilization of silver nanoparticles in nonanoic acid: a temperature activated conformation reaction observed with surface enhanced Raman spectroscopy" J. Chem. Phys., vol.119, no.13, p. 6802-9, 2003

G. Malyavanatham, D.T. O'Brien, M.F. Becker, J.W. Keto, and D. Kovar; "Au-Cu nanoparticles produced by laser ablation of mixtures of Au and Cu microparticles"  J. NANOPART RES 6 (6): 661-664, 2004

Stoker, D.; Downer, M.C.; Becker, M.F.; Keto, J.W.; "Optical third-harmonic surface microscopy using ultra-short laser pulses" Physica Status Solidi C, 2005, no.12, pp. 3978-82

Stoker, D, Becker, MF, Keto, JW; "Optical third-harmonic generation using ultrashort laser pulses" PHYS REV A 71 (6), 2005

G. Malyavanatham, D.T. O'Brien, M.F. Becker, W.T. Nichols, J.W. Keto, D. Kovar, S. Euphrasie, T. Loue and P. Pernod; "Thick films fabricated by laser ablation of PZT microparticles" J. MATER PROCESS TECH 168 (2): 273-279, 2005

Baek, J, Kovar, D, Keto, JW, et al.; "Determination of properties of wedged, nonuniformly thick, and absorbing thin films by using a new numerical method"
APPL OPTICS 45 (7): 1627-1639, 2006

J.W. Keto, G. Malyavanatham, A. Mueller, D.T. O'Brien, C.K. Shih, M.F. Becker, and D. Kovar; "Nanoparticles of Er doped glass produced by laser ablation of microparticles" submitted J. Nanoparticle Res.

W.T. Nichols, G. Malyavanatham, M.F. Becker, and J.W. Keto; "Fluorescence of CdSe and Si nanocrystals produced by laser ablation of microparticles" in preparation

W.T. Nichols, M.F. Becker, D.T. O'Brien, J.W. Keto, and D. Kovar; "Direct Writing of nanocomposite Films" in preparation

"Characterization of Semiconductor Core-Shell  Nanoparticles Generated by Laser Ablation of Nanoparticles" in preparation