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SUMMARY:Piezoelectric Nanoelectromechanical Systems (NEMS)
DTSTART:20131104T102000
DTEND:20131104T104000
DTSTAMP:20260510T202456Z
UID:cdbcb6b0b3e418dd18f22e12aa0c170e33483594efb19eabdf88ef1d
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Luis Guillermo Villanueva (EPFL/IMT/Advanced NEMS Group)
 \nEPFL/IMT - Peking University workshop on MEMS and related technologies\n
 For almost a century piezoelectric materials have been widely used in actu
 ators\, clocks\, frequency sources\, filters and other components in commu
 nication systems. Quartz has been the most used material but\, harnessing 
 the development of micro- and nano-fabrication techniques\, it is now poss
 ible to grow very thin layers of piezoelectric materials. This is particul
 arly interesting for the fabrication of resonant Nanoelectromechanical Sys
 tems (NEMS)\, which have generated an enormous interest over the last 15 y
 ears\, driven by a combination of fundamental questions and practical need
 s. I will describe how the use of piezoelectric materials is beneficial wh
 en increasing the operational frequency\, and how it facilitates some sens
 ing mechanisms\, in particular considering the non-dissipative and extreme
 ly linear nature of this transduction scheme. In addition\, fundamental st
 udies as parametric pumping\, noise squeezing and intermodal coupling\, wh
 ich can lead to an overall improvement of the sensing performance of these
  devices.Biography :\nGuillermo Villanueva obtained his Ms. Sc. graduated 
 in physics in 2002 from the University of Zaragoza and obtained his Ph.D. 
 in Microelectronic Engineering from the Autonomous University of Barcelona
  in 2006 for his work on the NEMS/MEMS for biodetection and scanning probe
 s.  He then worked as a post-doctoral researcher at EPFL\, Caltech and DT
 U in the fields of nanofabrication\, coupled and non-linear phenomena and 
 dissipation in NEMS. In 2013 he joined EPFL as a SNSF Assistant Professor 
 to continue his research in fundamentals of nanomechanical sensing. In 200
 5 he was awarded the MNE Young Investigator Award for his PhD work and in 
 2008 he was awarded a Marie Curie Fellowship.
LOCATION:Vittoz http://plan.epfl.ch/?lang=fr&room=bp1122
STATUS:CONFIRMED
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