Piezoelectric Nanoelectromechanical Systems (NEMS)
Event details
| Date | 04.11.2013 |
| Hour | 10:20 › 10:40 |
| Speaker | Prof. Luis Guillermo Villanueva (EPFL/IMT/Advanced NEMS Group) |
| Location | |
| Category | Conferences - Seminars |
EPFL/IMT - Peking University workshop on MEMS and related technologies
For almost a century piezoelectric materials have been widely used in actuators, clocks, frequency sources, filters and other components in communication systems. Quartz has been the most used material but, harnessing the development of micro- and nano-fabrication techniques, it is now possible to grow very thin layers of piezoelectric materials. This is particularly interesting for the fabrication of resonant Nanoelectromechanical Systems (NEMS), which have generated an enormous interest over the last 15 years, driven by a combination of fundamental questions and practical needs. I will describe how the use of piezoelectric materials is beneficial when increasing the operational frequency, and how it facilitates some sensing mechanisms, in particular considering the non-dissipative and extremely linear nature of this transduction scheme. In addition, fundamental studies as parametric pumping, noise squeezing and intermodal coupling, which can lead to an overall improvement of the sensing performance of these devices.
Biography :
Guillermo 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 probes. He then worked as a post-doctoral researcher at EPFL, Caltech and DTU 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 2005 he was awarded the MNE Young Investigator Award for his PhD work and in 2008 he was awarded a Marie Curie Fellowship.
For almost a century piezoelectric materials have been widely used in actuators, clocks, frequency sources, filters and other components in communication systems. Quartz has been the most used material but, harnessing the development of micro- and nano-fabrication techniques, it is now possible to grow very thin layers of piezoelectric materials. This is particularly interesting for the fabrication of resonant Nanoelectromechanical Systems (NEMS), which have generated an enormous interest over the last 15 years, driven by a combination of fundamental questions and practical needs. I will describe how the use of piezoelectric materials is beneficial when increasing the operational frequency, and how it facilitates some sensing mechanisms, in particular considering the non-dissipative and extremely linear nature of this transduction scheme. In addition, fundamental studies as parametric pumping, noise squeezing and intermodal coupling, which can lead to an overall improvement of the sensing performance of these devices.
Biography :
Guillermo 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 probes. He then worked as a post-doctoral researcher at EPFL, Caltech and DTU 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 2005 he was awarded the MNE Young Investigator Award for his PhD work and in 2008 he was awarded a Marie Curie Fellowship.
Links
Practical information
- Informed public
- Registration required
- This event is internal
Organizer
- EPFL/IMT