In-Situ surface characterization of nano- and microparticles by optical Second Harmonic Generation

Schürer B, Wunderlich S, Peschel U, Peukert W (2010)

Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2010

Book Volume: 1

Pages Range: 33-36

Conference Proceedings Title: Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites

Event location: Anaheim, CA US

ISBN: 9781439834015

URI: https://www.scopus.com/record/display.uri?eid=2-s2.0-78049441700&origin=inward

Abstract

Nonlinear optical spectroscopic techniques, namely Second Harmonic Generation (SHG) spectroscopy and Sum Frequency Generation (SFG), are highly interface sensitive and can be used to obtain information exclusively from the surface of particles. Second Harmonic Generation (SHG) has proven to be a versatile technique that can be used to probe different kinds of surface properties of dispersed particle systems in in-situ. Prominent examples are the direct study of molecular adsorption at the surface of particles and the determination of surface potentials of nano- and microparticles. However, in most of these studies well-defined spherical and monodisperse particles with low number densities were used. Here we demonstrate the application of the SHG technique for the study of more complex and technically relevant particle systems. We discuss the influence of particle concentration and particle size distribution. Moreover, we apply a novel nonlinear Mie Model that is capable to simulate the SH scattering from the surface of spherical particles and we show that the model can be used to extract information about molecules at the particle liquid interface.

Authors with CRIS profile

Sarina Wunderlich Professur für Experimentalphysik Ulf Peschel Professur für Experimentalphysik Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

How to cite

APA:

Schürer, B., Wunderlich, S., Peschel, U., & Peukert, W. (2010). In-Situ surface characterization of nano- and microparticles by optical Second Harmonic Generation. In Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites (pp. 33-36). Anaheim, CA, US.

MLA:

Schürer, Benedikt, et al. "In-Situ surface characterization of nano- and microparticles by optical Second Harmonic Generation." Proceedings of the Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010, Anaheim, CA 2010. 33-36.

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