{"id":185,"date":"2015-06-18T12:22:51","date_gmt":"2015-06-18T16:22:51","guid":{"rendered":"https:\/\/www.bu.edu\/photonics-ret\/?page_id=185"},"modified":"2021-09-28T13:05:12","modified_gmt":"2021-09-28T17:05:12","slug":"thomas-bifano","status":"publish","type":"page","link":"https:\/\/www.bu.edu\/photonics-ret\/research-projects\/projects-2025\/2015-summer-projects\/thomas-bifano\/","title":{"rendered":"Thomas Bifano"},"content":{"rendered":"<h3>Dynamic Surface Interferometry<\/h3>\n<figure id=\"attachment187\" aria-describedby=\"caption-attachment187\" style=\"width: 178px\" class=\"wp-caption alignright\"><img loading=\"lazy\" src=\"\/photonics-ret\/files\/2015\/06\/Bifano-4-426x636.jpg\" alt=\"Thomas Bifano\" width=\"168\" height=\"251\" class=\"wp-image-187\" srcset=\"https:\/\/www.bu.edu\/photonics-ret\/files\/2015\/06\/Bifano-4-426x636.jpg 426w, https:\/\/www.bu.edu\/photonics-ret\/files\/2015\/06\/Bifano-4-685x1024.jpg 685w, https:\/\/www.bu.edu\/photonics-ret\/files\/2015\/06\/Bifano-4.jpg 1800w\" sizes=\"(max-width: 168px) 100vw, 168px\" \/><figcaption id=\"caption-attachment187\" class=\"wp-caption-text\">Prof. Thomas Bifano Mechanical Engineering<\/figcaption><\/figure>\n<p><span style=\"color: #333333;\"><strong><a href=\"\/photonics-ret\/files\/2015\/06\/2015-NSF-REU-Bifano.pptx\" style=\"color: #333333;\">PROJECT DESCRIPTION<\/a><\/strong><\/span><br \/>\nThe goal of this project is to measure the mechanical response of a small (600\u00b5m span, 10\u00b5m thick) mirror segment that can be moved in angular (Tilt) or surface-normal (Piston) directions by appying voltage to one or more of three underlying electrostatic actuators.<\/p>\n<p>The measurements will be made using an existing Zygo NT 600 Dynamic Interferometer. The participants will assess the dynamic response (i.e. angular and surface normal velocity in response to a step input) of a tip-tilt-piston (TTP) microelectromechanical deformable mirror (DM) that is to be used in high speed beam steering applications.<\/p>\n<p>The mirror description can be found in: Stewart JB, Bifano TG, Cornelissen S, Bierden P, Levine BM, and Cook T, &#8220;Design and development of a 331-segment tip-tilt-piston mirror array for space-based adaptive optics,&#8221; Sensors and Actuators a-Physical, vol. 138, pp. 230-238, (2007).<\/p>\n<p><strong>REU STUDENT<br \/>\n<\/strong><a href=\"\/photonics-ret\/files\/2015\/07\/NSF-REU-INM-Introductory-Day-for-RET-participants-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Jesus Ramos<\/a><\/p>\n<p><strong>LEARNING GOALS<br \/>\n<\/strong><span>\u2022 <\/span>Understand the principles of surface mapping interferometry and its use to measure static and dynamic surfaces.<br \/>\n<span>\u2022 <\/span>Gain hands-on experience with microelectromechanical systems (MEMS) devices and their control.<br \/>\n<span>\u2022 <\/span>Understand dynamic response and temporal bandwidths of mechanical structures.<\/p>\n<p><strong>Learn more about Professor Bifano on his<span>\u00a0<\/span><a href=\"https:\/\/www.bu.edu\/eng\/profile\/thomas-bifano-ph-d\/\" target=\"_blank\" rel=\"noopener noreferrer\">faculty page<\/a>.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dynamic Surface Interferometry PROJECT DESCRIPTION The goal of this project is to measure the mechanical response of a small (600\u00b5m span, 10\u00b5m thick) mirror segment that can be moved in angular (Tilt) or surface-normal (Piston) directions by appying voltage to one or more of three underlying electrostatic actuators. The measurements will be made using an [&hellip;]<\/p>\n","protected":false},"author":10577,"featured_media":0,"parent":117,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/pages\/185"}],"collection":[{"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/users\/10577"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/comments?post=185"}],"version-history":[{"count":12,"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/pages\/185\/revisions"}],"predecessor-version":[{"id":1777,"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/pages\/185\/revisions\/1777"}],"up":[{"embeddable":true,"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/pages\/117"}],"wp:attachment":[{"href":"https:\/\/www.bu.edu\/photonics-ret\/wp-json\/wp\/v2\/media?parent=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}