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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-5289
DTSTART:20200213T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260415T040935Z
LAST-MODIFIED:20200203T131519Z
LOCATION:5310 Chamberlin Hall
SUMMARY:The fall and rise of the mass on a spring\, R. G. Herb Condens
 ed Matter Seminar\, Prof. Benjamin Aleman \, University of Oregon
DESCRIPTION:Since antiquity\, the mass on a spring and other simple me
 chanical systems have been used in everyday applications\, like time-k
 eeping clocks. But at one time\, they were also employed in smarter in
 formation technologies such as calculators and computers\, technologie
 s now ruled by silicon-based microelectronics. In recent years\, thank
 s largely to the nanometer-scale miniaturization of mechanical systems
  and the discovery of atomic-scale materials like graphene\, the mass 
 on a spring has been rising in scientific and technological prominence
 \, and is once again knocking on the door of more sophisticated uses. 
 The next step in this mechanical evolution—as occurred with electron
 ic microchips—is to form large programmable networks of interacting 
 nanomechanical resonators\, but such networks demand unprecedented\, s
 calable control over the resonance frequencies and coupling of the con
 stituent resonators. Here\, I will detail recent projects in my lab th
 at advance the quest to realize these networks\, projects enabled by o
 ptically addressable graphene nanoelectromechanical resonators. By har
 nessing several unique properties of graphene\, we develop an optoelec
 tronic non-volatile mechanical strain memory and a means for fast\, ph
 otothermally mediated strain modulation\, which together enable local 
 static and dynamic frequency and coupling control of resonators in lar
 ge arrays. I will discuss several applications already enabled by our 
 work\, such as a new light detector that "hears" light\, as well as so
 me wilder\, yet promising aspirations.
URL:https://www.physics.wisc.edu/events/?id=5289
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