By Yilong Han, A. M. Alsayed, M. Nobili, J. Zhang, Tom C. Lubensky and Arjun G. Yodh, credited as Y. Han, A. M. Alsayed, M. Nobili, J. Zhang, T. C. Lubensky and A. G. Yodh. Science 314(5799), 626–630, published 27 October 2006. The University of Pennsylvania author laboratory hosts the inspected PDF; its upload path does not date publication.
Inspected locators: pp. 626–628, apparatus and angular readout; Figure 1D–F; Figure 2A–B; p. 628, confinement and height fluctuations.