BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Unconventional nonlinear dynamics of carbon-based structures - Dr 
 Pierpaolo Belardnelli\, Universita Politecnica delle Marche
DTSTART:20250606T150000Z
DTEND:20250606T160000Z
UID:TALK229960@talks.cam.ac.uk
CONTACT:46601
DESCRIPTION:Modern technologies rely on miniature structures that are esse
 ntial to countless devices\nenabling communication\, sensing\, computation
 \, and medical applications. Micro- and nanomechanical systems are embedde
 d in a wide range of transduction and sensing technologies\, making them n
 early ubiquitous in contemporary products. Beyond their commercial impact 
 across\ndiverse fields\, fundamental research continues to push the bounda
 ries of their remarkable capabilities. However\, the ongoing pursuit of mi
 niaturization and improved performance makes the\nengineering of these dev
 ices increasingly complex\, with nonlinearities playing a pivotal role in\
 ntheir design and operation.\nThis talk delves into unconventional dynamic
 al phenomena observed in one- and twodimensional carbon-based nanodevices.
  I will report that a carbon nanotube can exhibit nonhysteretic bistabilit
 y\, where self-oscillations coexist with a quiet state\, a novel phenomeno
 n previously unreported in the field of nanomechanics. Then\, I will show 
 that graphene resonators\,\nwhen driven into the nonlinear regime of motio
 n and modulated by a slow signal in the presence\nof noise\, give rise to 
 exotic switching dynamical paths.\nThese newly observed dynamical regimes\
 , along with the methods used to reveal them\,\nare generic and applicable
  to a broad range of mesoscopic vibrational systems. They offer\nnew oppor
 tunities for sensing applications and for enhancing weak signals through s
 tochastic\nresonance.
LOCATION:JDB Seminar Room\, CUED
END:VEVENT
END:VCALENDAR