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Associate Professor, Engineering Sciences & Applied Mathematics,
Department of Mechanical Engineering
Northwestern University
Technological Institute, room M442
2145 Sheridan Rd
Evanston, IL 60208
phone: +1-847-491-7243
fax : +1-847-491-2178
e-mail: sascha@northwestern.edu Engineering Sciences & Applied Mathematics and Department of Mechanical Engineering,
McCormick School of Engineering and Applied Science, Northwestern University We study the interfacial structure and dynamical evolution of soft condensed matter, using experiment, theory, and numerical simulation. We are particularly interested in biological soft matter on the cellular level and in systems of importance in industrial applications (colloids, foams). One focus of our research is on gas/liquid two-phase systems, consisting of single or multiple bubbles. Not only are bubbles a fascinating subject by themselves, they are also extremely useful tools to probe other soft matter. Our research spans all areas from the mathematical fundamentals of the theory to the development of engineering applications. We collaborate with researchers all over the world from the engineering sciences, applied mathematics, physics, and medicine. Understanding soft matter requires drawing from interdisciplinary expertise in many fields, which makes the subject all the more exciting. Research Areas Teaching:
Winter quarter 2005:
ME 495 Mathematics and Mechanics of Soft Matter List of Publications Bubbles in Ultrasound Diagnostics and Biomedicine Refereed journal articles: 1. S. Grossmann, S. H., D. Lohse, and M. Zomack, "Sound radiation of 3-MHz driven gas bubbles" J. Acoust. Soc. Am. 102, 1223 (1997). 2. S. H., D. Lohse, and M. Zomack, "Response of bubbles to diagnostic ultrasound: a unifying theoretical approach", Eur. Phys. J. B 4, 247 (1998). 3. S. H. and D. Lohse, "The acoustics of diagnostic microbubbles: dissipative effects and heat deposition". Ultrasonics 38, 99 (2000). 4. S. H., D. Lohse, and M. Zomack, "Sound scattering and localized heat deposition of pulse driven microbubbles". J. Acoust. Soc. Am. 107, 3530 (2000). 5. •• P. Marmottant and S. H., "Controlled vesicle deformation and lysis by single oscillating bubbles", Nature 423, 153 (2003). 6. S. H. and P. Marmottant "Microbubbles: Tools for vesicle biomechanics", Acta Acustica 89, 727 (2003). 7. P. Marmottant and S. H., "A bubble-driven microfluidic transport element for bioengineering", Proc. Natl. Acad. Science USA, 101, 9523 (2004). 8. M. Postema, P. Marmottant, C. Lancee, S. H., and N. de Jong, "Ultrasound-induced microbubble coalescence", Ultrasound Med. Biol., 30, 1337 (2004). 9. M. Postema, P. Marmottant, C. T. Lanc´ee, M. Versluis, S. H., and N. de Jong, "Ultrasound-induced coalescence of free gas microbubbles", Proc IEEE Ultrason. Symp. 2004, 1-4 (2005). Book contributions: 10. A. Bauer, M. Zomack, S. H., D. Lohse, A. Urbanke, and R. Schlief, "New concepts for ultrasound contrast imaging". In "Transcranial Ultrasound", edited by R. Bogdahn, G. Becker, and F. Schlachetzky, Blackwell (1997). Upcoming articles and preprints: 11. P. Marmottant, J.-P. Raven, H. Gardeniers, J. G. Bomer, and S. H., "Bubble-powered microfluidic transport", submitted to J. Fluid Mech. (2005). 12. D. Hansen, P. Marmottant and S. H., "Steady streaming from surface-adsorbed microbubbles", preprint (2005). Foam Structure and Aging Refereed journal articles: 13. •• S. H., A. M. Kraynik, S. A. Koehler, and H. A. Stone, "An accurate von Neumann's law for three-dimensional foams", Phys. Rev. Lett. 86, 2685 (2001). 14. S. H., S. A. Koehler, and H. A. Stone, "The dynamics of coarsening foams: accelerated and self-limiting drainage", Phys. Rev. Lett. 86, 4704 (2001). 15. S. H., "Foam structure: The importance of bubble geometry", Nieuw Archief voor Wiskunde 5, 224 (2002). 16. S. H., A. M. Kraynik, D. A. Reinelt, and J. M. Sullivan, "The structure of foam cells: Isotropic Plateau Polyhedra", Europhys. Lett. 67, 484 (2004). 
Category: Mechanical Engineering
Type: Scientist & Engineers
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