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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261020T102053Z
LAST-MODIFIED:20180226T192947Z
DTSTART:20180228T160000Z
DTEND:20180228T170000Z
UID:event1920@bu.edu
URL:http://physics.bu.edu/internal/events/show/1920
SUMMARY:Nonlinear Mechanics and Nonlinear Material Properties in Micromecha
	nical Resonators
DESCRIPTION:Featuring Joseph Boales\n\nPart of the Departmental Seminars.\n
	\nMicroelectromechanical Systems are ubiquitous in modern technology\, with
	 applications ranging from accelerometers in smartphones to ultra-high prec
	ision motion stages used for atomically-precise positioning. As the sizes o
	f such devices decrease\, their mechanical\, electrical\, and material prop
	erties can no longer be treated as linear. Despite (and because of) these a
	dded complications\, nonlinear effects open up an entirely new world of beh
	aviors that can be measured or taken advantage of to create even more advan
	ced technologies.\nUsing aluminum-nitride-based resonators\, I demonstrate 
	the incredible sensitivity of these devices in their linear regimes by actu
	ating a mechanical resonant mode using only the force generated by the radi
	ation pressure. Next\, I will describe information transfer by taking advan
	tage of the nonlinear frequency-mixing behavior of the resonators using bot
	h acoustic pressure waves and radiation pressure. For my final experiments\
	, I will describe new methods to probe the nonlinear nature of the piezoele
	ctric material rather than take advantage of the nonlinear resonator behavi
	or and to determine the nonlinear piezoelectric coefficients.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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