BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20250309T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20241103T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250226T192100Z UID:EC14DA6E-E7A0-461A-9854-DE670ED25F3A DTSTART;TZID=America/New_York:20250225T173000 DTEND;TZID=America/New_York:20250225T193000 DESCRIPTION:Talk Titles:\n\n- Overview of Draper MEMS (15 min)\n- Tactile D isplay based on Low-Cost Circuit Board Fabrication (30 min)\n\nTactile Dis play Abstract\n\nThis talk will describe a tactile display based on CMT (C apacitive Micromachined Transducer) actuation using low-cost circuit board s in place of silicon or glass wafers.\n\nThere are hundreds of millions o f people world-wide who are blind or vision-impaired (BVI) that would bene fit from a tactile display which can communicate low-resolution images or Braille text. It is estimated that 50% of internet content is images\, cur rently inaccessible to BVI. This represents a significant barrier to educa tion and employment. Large area refreshable tactile displays based on arra ys of electromechanical actuators are in development\, but are expensive\, typically $12k - $30k for a tablet sized instrument.\n\nThe human fingert ip is very sensitive to vibration\, about 100X more sensitive than to stat ic bumps. A vibratory display needs to move only a few microns to be sense d\, in contrast to refreshable tactile displays (which raise and lower sta tic bumps) to a height of 500 um. Vibratory motion of 5-10 um is achievabl e using a capacitively actuated array of transducers. We will show some ea rly prototypes fabricated using low-cost printed circuit boards (PCBs)\, F EA modeling and polytec laser vibrometry of the surface motion (in collabo ration with Tufts University)\, and describe the inclusion of electrets in to the devices to reduce the required actuation voltages.\n\nGetting to No rtheastern University: Northeastern University is centrally located among the following three stops of the [MBTA](https://www.mbta.com/) subway syst em: the Green Line E\, “Northeastern\,” stop\; the Green Line E\, “M useum of Fine Arts\,” stop\; and the Orange Line\, “Ruggles\,” stop. Accommodations are located on NU’s main campus.\n\nSpeaker(s): Jon Bern stein\, \n\nAgenda: \n5:30pm - 6:30 PM: Networking Dinner\n\n6:30 - 7:30 P M: TechTalk and Q&A\n\nRoom: EXP 610\, Bldg: Conference room EXP 610\, 815 Columbus Avenue\, Boston\, Massachusetts\, United States\, 02120 LOCATION:Room: EXP 610\, Bldg: Conference room EXP 610\, 815 Columbus Avenu e\, Boston\, Massachusetts\, United States\, 02120 ORGANIZER:ieee.microsystems.boston@gmail.com SEQUENCE:19 SUMMARY:IEEE Microsystems TechTalk: Overview of Draper MEMS and Tactile Dis play Based on Low-Cost Circuit Board Fabrication URL;VALUE=URI:https://events.vtools.ieee.org/m/467839 X-ALT-DESC:Description: <br /><p class="MsoNormal"><strong>Talk Titles:</st rong></p>\n<ul type="disc">\n<li class="m_8084054765212138837MsoListParagr aph">Overview of Draper MEMS (15 min)</li>\n<li class="m_80840547652121388 37MsoListParagraph">Tactile Display based on Low-Cost Circuit Board Fabric ation (30 min)</li>\n</ul>\n<p class="MsoNormal">&nbsp\;</p>\n<p class="Ms oNormal"><strong>Tactile Display Abstract</strong></p>\n<p class="MsoNorma l">This talk will describe a tactile display based on CMT (Capacitive Micr omachined Transducer) actuation using low-cost circuit boards in place of silicon or glass wafers.&nbsp\;</p>\n<p class="MsoNormal">There are hundre ds of millions of people world-wide who are blind or vision-impaired (BVI) that would benefit from a tactile display which can communicate low-resol ution images or Braille text.&nbsp\; It is estimated that 50% of internet content is images\, currently inaccessible to BVI.&nbsp\; This represents a significant barrier to education and employment.&nbsp\; Large area refre shable tactile displays based on arrays of electromechanical actuators are in development\, but are expensive\, typically $12k - $30k for a tablet s ized instrument.</p>\n<p class="MsoNormal">The human fingertip is very sen sitive to vibration\, about 100X more sensitive than to static bumps.&nbsp \; A vibratory display needs to move only a few microns to be sensed\, in contrast to refreshable tactile displays (which raise and lower static bum ps) to a height of 500 um.&nbsp\; Vibratory motion of 5-10 um is achievabl e using a capacitively actuated array of transducers.&nbsp\; We will show some early prototypes fabricated using low-cost printed circuit boards (PC Bs)\, FEA modeling and polytec laser vibrometry of the surface motion (in collaboration with Tufts University)\, and describe the inclusion of elect rets into the devices to reduce the required actuation voltages.</p>\n<p c lass="MsoNormal">Getting to Northeastern University: Northeastern Universi ty is centrally located among the following three stops of the <a href="ht tps://www.mbta.com/" rel="noreferrer noopener">MBTA</a> subway system: the Green Line E\, &ldquo\;Northeastern\,&rdquo\; stop\; the Green Line E\, & ldquo\;Museum of Fine Arts\,&rdquo\; stop\; and the Orange Line\, &ldquo\; Ruggles\,&rdquo\; stop.&nbsp\;Accommodations are located on NU&rsquo\;s ma in campus.</p><br /><br />Agenda: <br /><p>5:30pm - 6:30 PM: Networking Di nner</p>\n<p>6:30 - 7:30 PM: TechTalk and Q&amp\;A</p> END:VEVENT END:VCALENDAR