(12) United States Patent (10) Patent No.: US 9.482,861 B2 Lahann Et Al
USOO9482861 B2 (12) United States Patent (10) Patent No.: US 9.482,861 B2 Lahann et al. (45) Date of Patent: Nov. 1, 2016 (54) OPTICAL DEVICES WITH SWITCHABLE (58) Field of Classification Search PARTICLES USPC ....... 359/237, 242, 246, 247, 290–292, 295, 359/296, 298 (75) Inventors: Joerg Lahann, Ann Arbor, MI (US); See application file for complete search history. Sang-yeul Hwang, Ann Arbor, MI (US); Jaewon Yoon, Ann Arbor, MI (56) References Cited (US); Srijanani Bhaskar, Boothwyn, PA (US); Kyungjin Lee, Daejeon (KR); U.S. PATENT DOCUMENTS Tae-Hong Park, Daejeon (KR) 3,060,429 A 10, 1962 Winston 4,621,268 A 11/1986 Keeling et al. (73) Assignee: The Regents Of The University Of Michigan, Ann Arbor, MI (US) (Continued) (*) Notice: Subject to any disclaimer, the term of this FOREIGN PATENT DOCUMENTS patent is extended or adjusted under 35 EP 1809719 A2 7/2007 U.S.C. 154(b) by 421 days. EP 2285889 A1 2, 2011 (21) Appl. No.: 13/880,826 (Continued) (22) PCT Filed: Oct. 21, 2011 OTHER PUBLICATIONS Cayre, Olivier, et al., “Fabrication of dipolar colloid particles by (86). PCT No.: PCT/US2011/057305 microcontact printing.” Chem. Commun., pp. 2296-2297 (2003) S 371 (c)(1), (first published online Aug. 5, 2003). (2), (4) Date: Aug. 28, 2013 (Continued) (87) PCT Pub. No.: WO2012/054841 Primary Examiner — Joseph P Martinez PCT Pub. Date: Apr. 26, 2012 Assistant Examiner — Brandi Thomas (74) Attorney, Agent, or Firm — Harness, Dickey & (65) Prior Publication Data Pierce, PLC US 2013/0329275 A1 Dec. 12, 2013 (57) ABSTRACT Optical display devices and methods of operating Such Related U.S.
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