Michael George Professor, Department of Space Science Biography A primary interest has been to study the properties of thin films and other nanoscale deposits such as clusters. Because they are very small, when compared to bulk materials, both thin films and nanoscale clusters demonstrate much different properties then their bulk counterparts. These size-dependent effects result in unusual mechanical, optical and electrical properties that when stimulated by physical changes such as adsorption, often lead to observable changes. These measurable changes can often be utilized for the development of a sensor or detector. Dr. George has employed scanning tunneling microscopy and atomic force microscopy to obtain information about the structure, composition and electrical properties of surfaces. He also has experience in x-ray photoelectron and Auger electron spectroscopies for the characterization of the chemical composition and bonding properties of surfaces. Recent research has involved investigation of the properties of microcantilevers and investigations of fundamental molecular scale interactions between cantilever tips and surfaces. Professor George's Lab is the Scanning Probe Microscopy Lab & Nanosurface Phenomena Research Group Education Ph.D., Physical Chemistry, Arizona State University, 1991 Classes Taught CH 121 - GENERAL CHEMISTRY I CH 123 - GENERAL CHEMISTRY II CH 223 - QUANTITATIVE ANALYSIS Publications J.D. Ng, J.J. Dowell1, A.K. Kar, K. Hansen, T. Thundat and M. A. George, “Measurement of Temperature induced Unfolding of DNA hairpins by Microcantilever Sensors” J. Biosens. Vol. 2 (2013) pp. 78-82 A. Kar, M.A. George, “Nonlinear Response of Multi-segmented Photodetectors used for Measurement of Microcantilever Motion over Large Dynamic Ranges,” J. Sens. Tech. 2, (2012) pp. 196-205. M.Yegnaraman, Y. Shtessel, M.A. George, J. English, “Microcantilever sensor using second order sliding mode control”, Proceedings IEEE, (2007), p 423 A.R. Kadam, G.P. Nordin, and M.A. George “Use of thermally induced higher order modes of a microcantilever for mercury vapor detection”, Journal of Applied Physics 99, (2006) 94,905. A.P. Kadam, G.P. Nordin and M.A. George “Comparison of microcantilever Hg sensing behavior with thermal higher order modes for as-deposited sputtered and thermally evaporated Au films” Journal of Vacuum Science and Technology (B) 24, 5 (2006) 2271. Y. J. Wright, A.K. Kar, C. Scholz and M.A. George, “Study of microcapillary pipette-assisted method to prepare polyethylene glycol-coated microcantilever sensors” Sensors and Actuators B 107 (2005) 242-251. A. K. Kar and M. A. George, “Improved detection of thermally induced higher resonance modes and harmonics of a microcantilevers,” Journal of Applied Physics, 94(7) (2003) 4626-4631. R. Singh, J. Doolittle, Jr., M. A. George and P. K. Dutta, "Novel Surface Structure of Microporous Faujasitic-like Zincophosphate Crystals Grown via Reverse Micelles,” Langmuir (2002), 18, 8193-8197. S. Zhu, C.-H. Su, S.L. Lehoczky, M.T. Harris, M.J. Callahan, P. McCarty, M.A. George, "Substrate preparations in epitaxial ZnO film growth,” Journal of Crystal Growth, v 225, n 2-4, (2001) 190. Shen Zhu, C-H Su, S. L. Lehoczky, and M. A. George, “Polarity Effects of Substrate Surface in Epitaxial ZnO Film Growth”, J. of Cryst. Growth, 219 (2000) 361. S. Vijayalakshmi, Z. Iqbal, M.A. George, J. Federici, H. Grebel, "AFM Characterization of Laser Ablated Silicon Thin Films" Thin Solid Films v 339 n 1-2 Feb 8 (1999 )p. 102-108. D. D. Smith, Youngkwon Yoon, Robert W. Boyd, Joseph K. Campbell, Lane A. Baker, Richard M. Crooks, and Michael George. "Z-scan measurement of the nonlinear absorption of a thin gold film", Journal of Applied Physics, v. 86, n. 11, (1999) p 6200.