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 NJGC  Vol.1 No.2 , July 2011
Photoacoustic Studies of Colloidal Silica Particles after MeV Ion-Induced Shape Deformation
Abstract: Ordered arrays of colloidal submicrometer-sized silica particles deposited onto silicon wafers were irradiated with MeV Si ions. The spherical silica particles turned into oblate particles as a result of the increase of the particle dimension perpendicular to the ion beam direction and the decrease in the parallel direction. Pulsed laser photoacoustic spectroscopy was used to study the structural changes of the silica particles after the ion-induced shape deformation. Our purpose is to correlate the mechanical vibrations generated by the pulsed laser as a function of the Si irradiation parameters: ion energy and fluence. Fast Fourier transform analysis of the photoacoustic signal was carried out in order to obtain the normal vibration modes of the system. The size, size distribution and shape of the silica particles were determined by scanning electron microscopy. Our results revealed significant structural differences between the spherical and the deformed silica particles.
Cite this paper: nullU. Morales, R. Castañeda-Guzmán, S. Pérez-Ruiz and J. Cheang Wong, "Photoacoustic Studies of Colloidal Silica Particles after MeV Ion-Induced Shape Deformation," New Journal of Glass and Ceramics, Vol. 1 No. 2, 2011, pp. 63-68. doi: 10.4236/njgc.2011.12011.
References

[1]   J. P. Hoogenboom, C. Retif, E. de Bres, M. van de Boer, A. K. van Langen-Suurling, J. Romijn and A. van Blaaderen, “Template-Induced Growth of Close-Packed and Non-Close-Packed Colloidal Crystals during Solvent Evaporation,” Nano Letters, Vol. 4, No. 2, 2004, pp. 205-208. doi:10.1021/nl034867h

[2]   L. P. Li, Y. F. Lu, D. W. Doerr, D. R. Alexander, J. Shi and J. C. Li, “Fabrication of Hemispherical Cavity Arrays on Silicon Substrates Using Laser-Assisted Nanoimprinting of Self-Assembled Particles,” Nanotechnology, Vol. 15, No. 3, 2004, pp. 333-336. doi:10.1088/0957-4484/15/3/017

[3]   T. van Dillen, A. Polman, W. Fukarek and A. van Blaaderen, “Energy-Dependent Anisotropic Deformation of Colloidal Silica Particles under MeV Au Irradiation,” Applied Physics Letters, Vol. 78, No. 7, 2001, pp. 910-912. doi:10.1063/1.1345827

[4]   J. C. Cheang-Wong, U. Morales, E. Reséndiz, A. Oliver and L. Rodriguez-Fernández, “Deformation of Colloidal Silica Particles Using MeV Si Ion Irradiation,” Journal of Non-Crystalline Solids, Vol. 353, No. 18-21, 2007, pp. 1925-1929. doi:10.1016/j.jnoncrysol.2007.01.056

[5]   S. Klaumünzer, “Ion Hammering of Silica Colloids,” Nuclear Instruments and Methods B, Vol. 215, No. 3-4, 2004, pp. 345-352. doi:10.1016/j.nimb.2003.08.031

[6]   J. C. Cheang-Wong, U. Morales, A. Oliver, L. Rodríguez-Fernández and J. Rickards, “MeV Ion Beam Deformation of Colloidal Silica Particles,” Nuclear Instruments and Methods B, Vol. 242, No. 1-2, 2006, pp. 452-454. doi:10.1016/j.nimb.2005.08.078

[7]   J. C. Cheang-Wong, U. Morales, E. Reséndiz and A. López-Suárez, “Energy-Dependent Deformation of Colloidal Silica Nanoparticles under Room Temperature Irradiation with MeV Si Ions,” Journal of Nano Research, Vol. 5, 2009, pp. 61-67. doi:10.4028/www.scientific.net/JNanoR.5.61

[8]   D. Schneider and B. Schultrich, “Elastic Modulus: A Suitable Quantity for Characterization of Thin Films,” Surface and Coatings Technology, Vol. 98, No. 1-3, 1998, pp. 962-970. doi:10.1016/S0257-8972(97)00317-4

[9]   R. Casta?eda-Guzmán, A. Huanosta-Tera, L. Ba?os, M. Fernández-Zamora and S. J. Pérez-Ruiz, “Pulsed Photoacoustic: A Reliable Technique to Investigate Diffuse phase Transitions and Associated Phenomena in Ferroelectrics,” Ferroelectrics, Vol. 386, No. 1, 2009, pp. 50-61. doi:10.1080/00150190902961298

[10]   A. C. Tam, “Applications of Photoacoustic Sensing Techniques,” Reviews of Modern Physics, Vol. 58, No. 2, 1986, pp. 381-431. doi:10.1103/RevModPhys.58.381

[11]   V. Torres-Zu?iga, R. Casta?eda-Guzmán, S. J. Pérez-Ruiz, O. G. Morales-Saavedra and M. Zepahua-Camacho, “Optical Absorption Photoacoustic Measurements for Determination of Molecular Symmetries in a Dichroic Organic-Film,” Optics Express, Vol. 16, No. 25, 2008, pp. 20724-20733. doi:10.1364/OE.16.020724

 
 
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