University of Minnesota
School of Physics & Astronomy
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Cheng-Cher Huang

Professor

335 Tate, 624-0861/624-1876, email huang001 @ umn.edu
http://groups.physics.umn.edu/lcrystal/index.html
CClabweb.jpg

Current Research

Optical investigations of free-standing liquid-crystal films, in particular, the films possessing a net electrical dipole moment to acquire the molecular orientational arrangements within the films. We have been empolying the following three probes: ellipsometry, differential optical reflectivity and depolarized reflected light microscopy. In collaboration with other research groups, we have been utilizing polarization analyzed resonant x-ray diffraction to determine the molecular orientational order in various mesophases found in rod-like and bent-core liquid crystal compounds.

Advisees and Collaborators

LiDong Pan, Research Assistant

Selected Publications

LiDong Pan, B.K. McCoy, Shun Wang, Wolfgang Weissflog, and C.C. Huang, Uniaxial to biaxial smectic-A transition in a bent core liquid crystal, Phys. Rev. Lett. 105, 117802 (2010).

Shun Wang, LiDong Pan, R. Pindak, Z.Q. Liu, H. T. Nguyen, and C. C. Huang, Discovery of a novel smectic-C* liquid crystal phase with six-layer periodicity, Phys. Rev. Lett. 104, 027801 (2010).

LiDong Pan, Shun Wang, C.S. Hsu, and C.C. Huang, Thickness dependent phase behavior of antiferroelectric liquid crystal films, Phys. Rev. Lett. 103, 187802 (2009)

LiDong Pan, Shun Wang, C.S. Hsu, and C.C. Huang, Surface-induced ordering effect in one antiferroelectric liquid crystal compound, Phys. Rev. E 79, 031704 (2009).

Shun Wang, LiDong Pan, B.K. McCoy, S.T. Wang, R. Pindak, H.T. Nguyen, and C.C. Huang, Recovery of a reversed phase sequence in one ternary liquid-crystal-mixture system, Phys. Rev. E 79, 021706 (2009).

B.K. McCoy, Z.Q. Liu, S.T. Wang, LiDong Pan, Shun Wang, H.T. Nguyen, R. Pindak, and C.C. Huang, Effects of doping on an unusual semctic_alpha*-smectic_FI2*-smectic_C* phase sequence, Phys. Rev. E 77, 061704 (2008).

P. Fernandes, P. Barois, S. T. Wang, Z. Q. Liu, B. K. McCoy, C. C. Huang, R. Pindak, W. Caliebe, and H. T. Nguyen, Polarization studies of resonant “Forbidden” reflections in liquid crystals, Phys. Rev. Lett. 99, 227801 (2007).

P. D. Brimicombe, N.W. Roberts, S. Jaradat, C. Southern, S.T. Wang, C.C. Huang, E. DiMasi, R. Pindak, and H.F. Gleeson, “Deduction of the temperature-dependent structure of the four-layer intermediate smectic phase using resonant x-ray scattering”, Eur. Phys. J. E 23, 281 (2007)

Z. Q. Liu, B. K. McCoy, S. T. Wang, R. Pindak, W. Caliebe, P. Barois, P. Fernandes, H. T. Nguyen, C. S. Hsu, Shung Wang and C. C. Huang, Unique Pitch Evolution in the Smectic-C*_alpha Phase, Phys. Rev. Lett. 99, 077802 (2007).

B. K. McCoy, Z. Q. Liu, S. T. Wang, R. Pindak, K. Takekoshi, K. Ema, A. Seed, and C. C. Huang, , “SmC* phase with two coexistent pitch values and a first order SmC_alpha*-SmC* transition”, Phys. Rev. E 75, 051706 (2007)

Education

B.Sc. Physics, National Taiwan University, Taipei, 1969.
Ph.D., Physics, University of Pennsylvania, 1975.