+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Yang, Eui-Hyeok [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 6 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order Adjustable Membrane Mirrors Incorporating G-Elastomers Author(s): Chang, Zensheu; Morgan, Rhonda M.; Xu, Tian-Bing; Su, Ji; Hishinuma, Yoshikazu; Yang, Eui-Hyeok Abstract: Lightweight, flexible, large-aperture mirrors of a type being developed for use in outer space have unimorph structures that enable precise adjustment of their surface figures. A mirror of this type includes a reflective ... NASA Center: Jet Propulsion Laboratory, Langley Research Center Publication Year: 2008 Added to NTRS: 2008-12-22 Document ID: 20080047183; Report Number: NPO-45616 A Wafer Transfer Technology for MEMS Adaptive Optics Author(s): Yang, Eui-Hyeok; Wiberg, Dean V. Abstract: Adaptive optics systems require the combination of several advanced technologies such as precision optics, wavefront sensors, deformable mirrors, and lasers with high-speed control systems. The deformable mirror with a ... NASA Center: Jet Propulsion Laboratory Publication Year: 2001 Added to NTRS: 2007-12-18 Document ID: 20070036011 Optimized design, fabrication and charactrization of PZT unimorph microactuators for deformable mirrors Author(s): Hishinuma, Yoshikazu; Yang, Eui-Hyeok; Cheng, Jian-Gong; Trolier-McKinstry, Susan Abstract: This paper describes an optimization of PZT unimorph membrane microactuators in view of their application to deformable mirrors (DMs). NASA Center: Jet Propulsion Laboratory Publication Year: 2004 Added to NTRS: 2006-12-25 Document ID: 20060043338 A Nanochannel fabrication technique using chemical-mechanical polishing (CMP) and thermal oxidation Author(s): Lee, Choonsup; Yang, Eui-Hyeok; Myung, Nosang V.; George, Thomas Abstract: We have developed a new nanochannel fabrication technique using chemical-mechanical polishing (CMP) and thermal oxidation. With this technique, it is possible to control the width, length, and depth of the nanochannels ... NASA Center: Jet Propulsion Laboratory Publication Year: 2003 Added to NTRS: 2006-12-25 Document ID: 20060044015 A piezoelectric liquid-compatible microvalve for integrated micropropulsion Author(s): Lee, Choonsup; Yang, Eui-Hyeok Abstract: A leak-tight, low-power, liquid-compatible, piezoelectric microvalve has been designed, fabricated, and fully characterized. NASA Center: Jet Propulsion Laboratory Publication Year: 2004 Added to NTRS: 2006-12-25 Document ID: 20060043193 Single-crystal silicon continuous membrane deformable mirror with PZT unimorph microactuator arrays Author(s): Hishinuma, Yoshikazu; Yang, Eui-Hyeok Abstract: For the first time, this paper reports on the piezoelectric unimorph-based deformable mirror (DM) with continuous single-crystal silicon deformable membrane. NASA Center: Jet Propulsion Laboratory Publication Year: 2004 Added to NTRS: 2006-12-25 Document ID: 20060043033 + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007