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SUMMARY:Piezoelectric thin films\, key materials for micro and communicati
 on technology
DTSTART:20220530T171500
DTEND:20220530T181500
DTSTAMP:20260414T132343Z
UID:705a4958f6a40605888e15a4029270dffb6c6863d8c211e44de4c926
CATEGORIES:Inaugural lectures - Honorary Lecture
DESCRIPTION:Prof. Paul Muralt\nAfter 20 to 40 years in research and develo
 pment\, micro devices based on piezoelectric thin films have conquered sev
 eral markets such as RF filters for mobile phones and high-resolution ink 
 jet printing. Many more are in the emerging state. Finally\, the advantage
 s of piezoelectric coupling in electro-mechanical problems have become evi
 dent for a growing community of microsystems engineers.  This talk will f
 irst give an overview on the field including own works. The challenges in 
 thin film growth of PZT and AlN-ScN alloys are outlined\, before taking th
 e focus on applications at RF frequencies in the lower GHz range as used i
 n mobile communication for signal transmission. This is a particularly fru
 itful and important application field as sound waves at these high frequen
 cies are trapped within a few micrometers\, allowing for about 100 times s
 maller resonators as compared to trapping the electromagnetic wave directl
 y. In addition\, the acoustic quality of selected piezoelectric materials 
 is so high\, that there is no competition by other principles. The new mic
 rosonics technology is essential for smart phones and 5G networks. Beyond 
 communication\, numerous sensor applications are studied. Presently\, thes
 e include also self-powered\, wireless sensor nodes.  \nBio: Paul Muralt 
 is honorary professor at the Swiss Federal Institute of Technology EPFL at
  Lausanne\, Switzerland. He made his PhD on incommensurate phase transitio
 ns at the Institute of Solid State Physics of ETH Zürich (1984). In his p
 rofessional career he was working at the IBM Research Laboratory in Zurich
 \, where he pioneered electric surface potential mapping by an STM techniq
 ue\, at the Free University of Berlin\, and in a thin film coating industr
 y (Balzers) before joining the Ceramics Laboratory of the Materials Scienc
 e Institute of EPFL in 1993. He was leading a group on electroceramic thin
  films for micro and nano technology. He is particularly known for his wor
 ks in processing\, functional characterization and MEMS applications of pi
 ezoelectric and pyroelectric thin films such as PbZrTiO3\, AlN and AlScN. 
 He authored or co-authored over 250 scientific articles\, which collected 
 16’000 citations so far. He was teaching thin film deposition\, micro an
 d nano structuration\, surface analysis and introduction to ceramics. He i
 s IEEE Fellow\, received the outstanding achievement award of the Internat
 ional Symposium of Integrated Ferroelectrics in 2005\, and the C.B. Sawyer
  award for innovations in materials from the IEEE International Frequency 
 Control Symposium in 2016. He acted as co-chair of the MRS spring meeting 
 in 2008\, and in 2019 he was chair of a large joint meeting in Lausanne in
 cluding the IEEE International Symposium on Applications of Ferroelectrics
 .\n\nProgram:\n\n	Introduction from Prof. Harm-Anton Klok\, Institute of M
 aterials Science and Engineering Director\n	Honorary Lecture from Prof. Pa
 ul Muralt - "Piezoelectric thin films\, key materials for micro and commun
 ication technology"\n\n\n 
LOCATION:CE 1 2 https://plan.epfl.ch/?room==CE%201%202 https://epfl.zoom.u
 s/j/63516130545
STATUS:CONFIRMED
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