[Journal Articles]

Ophelia Tsui

Associate Professor
Boston University
Associate Professor
590 Commonwealth Ave.
SCI 215
Boston, MA 02215
Office: (617) 358-4669



*Atomic force microscopic nanolithography
*Dewetting of polymer thin films
*Dynamics of polymer thin films
*Liquid crystal alignment on inhomogeneous patterned surfaces

My current research interest comprises various fields of soft condensed matter physics, including dewetting instability of polymer thin films, dynamics of polymer ultra thin films, wetting properties of textured surfaces, surface and frustration induced orientational ordering in polymer films and liquid crystal systems and application of microfluidics in biological studies. As atomic force microscopy (AFM) is a major tool in my research, I am also engaged in the development and application of various AFM techniques such as AFM mechanics, nanotribology and nanolithography.

Journal Articles

21.) A. Clough, D. Peng, Z. Yang, and O. Tsui, "Glass transition temperature of polymer films that slip," Macromolecules, Vol. 44, 16 February 2011, pp. 1649-1653

20.) Z. Yang, Y. Fujii, F. K. Lee, C. Lam, and O. Tsui, "Glass transition dynamics and surface layer mobility in unentangled polystyrene films," Science, Vol. 328, No. 1676-1679, 25 June 2010

19.) Y. Fujii, Z. Yang, A. Clough, and O. Tsui, "Shear modulus of a polymer brush," Macromolecules, Vol. 43, No. 9, 14 April 2010, pp. 4310-4313

18.) Y. Fujii, Z. Yang, J. Leach, H. Atarashi, K. Tanaka, and O. Tsui, "Affinity of polystyrene films to hydrogen-passivated silicon and its relevance to the Tg of the films," Macromolecules, Vol. 42, 2009, pp. 7418-7422

17.) Z. Yang, C. Lam, E. DiMasi, N. Bouet, J. Jordan-Sweet, and O. Tsui, "Method to measure the viscosity of nanometer liquid films from the surface fluctuations," Applied Physics Letters, Vol. 94, 2009, pp. 251906

16.) Z. Yang, Y. Wang, L. Todorova, and O. Tsui, "Examination of Nonliquidlike Behaviors in Molten Polymer Films," Macromolecules, Vol. 41, 14 September 2008, pp. 8785-8788

15.) X. Zhang, F. K. Lee, and O. Tsui, "Wettability of End-Grafted Polymer Brush by Chemically Identical Polymer Films," Macromolecules, Vol. 41, 14 August 2008, pp. 8148-8151

14.) K. J. Morton, K. Loutherback, D. W. Inglis, O. Tsui, J. C. Sturm, S. Y. Chou, and R. H. Austin, "Crossing microfluidic streamlines to lyse, label and wash cells," Lab on a Chip, Vol. 8, No. 9, 23 July 2008, pp. 1448-1453

13.) K. J. Morton, K. Loutherback, D. W. Inglis, O. Tsui, J. C. Sturm, S. Y. Chou, and R. H. Austin, "Examination of Nonliquidlike Behaviors in Molten Polymer Films," Proceedings of the National Academy of Science, Vol. 105, No. 21, 21 February 2008, pp. 7434-7438

12.) O. Tsui, Y. J. Wang, F. K. Lee, C. Lam, and Z. Yang, "Equilibrium Pathway of Spin-Coatd Polymer Films," Macromolecules, Vol. 41, No. 4, 2008, pp. 1465-1468

11.) Y. J. Wang, C. Lam, X. Zhang, and O. Tsui, "Stability of polymer films as a 2D system," The European Physical Journal Special Topics, Vol. 141, 2007, pp. 181-187

10.) Y. J. Wang, and O. Tsui, "Unconventionl Spinodal Surface Fluctuations on Polymer Films," Langmuir, Vol. 22, No. 5, 2006, pp. 1959-1963

9.) F. S. Yeung, F. Xie, J. T. Wan, F. K. Lee, O. Tsui, P. Sheng, and H. S. Kwok, "Liquid crystal pretilt angle control using nanotextured surfaces," Journal of Applied Physics, Vol. 99, 2006, pp. 124506

8.) F. K. Lee, B. Zhang, P. Sheng, H. S. Kwok, and O. Tsui, "Continuous liquid crystal pretilt control through textured substrates," Applied Physics Letters, Vol. 85, No. 23, December 2004, pp. 5556-5558

7.) B. Zhang, F. K. Lee, O. Tsui, and P. Sheng, "Liquid crystal orientation transiton on microtextured substrates," Physical Review Letters, Vol. 91, No. 21, November 2003, pp. 215501

6.) Q. Liang, O. Tsui, Y. Xu, H. Li, and X. Xiao, "Effect of C60 molecular rotation on nanotribology," Physical Review Letters, Vol. 90, 2003, pp. 146102

5.) H. Huang, F. Zhang, Z. Hu, B. Du, T. He, F. K. Lee, Y. Wang, and O. Tsui, "Study on the origin of inverted phase in drying solution-cast block copolymer films," Macromolecules, Vol. 36, No. 11, 2003, pp. 4084-4092

4.) O. Tsui, T. Russell, and C. J. Hawker, "Effect of Interfacial Interactions on the Glass Transition of Polymer Thin Films," Macromolecules, Vol. 34, No. 16, 2001, pp. 5535-5539

3.) O. Tsui, X. P. Wang, J. Y. Ho, T. K. Ng, and X. Xiao, "Studying surface glass-to-rubber transition usig atomic force microscopic adhesion measurements," Macromolecules, Vol. 33, No. 11, 2000, pp. 4198-4204

2.) O. Tsui, N. P. Ong, and J. B. Peterson, "Excitation ofthe Josephson Plasma Mode in Bi2Sr2CaCu2O8+d in an Oblique Field," Physical Review Letters, Vol. 76, No. 5, January 1996, pp. 819-822

1.) O. Tsui, N. P. Ong, Y. Matsuda, Y. F. Yan, and J. B. Peterson, "Sharp Magnetoabsorption Resonances in the Vortex State of Bi2Sr2CaCu2O8+d," Physical Review Letters, Vol. 73, No. 5, August 1994, pp. 724-727

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