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Frode Tyholdt

Senior Research Scientist

Frode Tyholdt

Senior Research Scientist

Frode Tyholdt
Phone: 917 58 274
Department: Microsystems and Nanotechnology
Office: Oslo

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1754673

Piezoelectric microelectromechanical systems (piezoMEMS) technology has found many applications within sensor and communication technology. A scientific challenge is the reliability of piezoMEMS operating at high electromechanical stresses in realistic environments, often associated with high humidi...

Authors Dahl-Hansen Runar Plunnecke Tyholdt Frode Gjessing Jo Vogl Andreas Vedum Jon Wittendorp Paul Tybell Per Thomas Martin
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1754670

Pb(Zr, Ti)O3 (PZT) is a piezoelectric material with large dielectric and piezoelectric compliances and is one of the most technologically important materials for thin film piezoelectric microelectromechanical systems. Reliability in humid conditions is a key concern for deploying devices in realisti...

Authors Dahl-Hansen Runar Plunnecke Vøllestad Einar Tyholdt Frode Trolier-Mckinstry Susan E Tybell Per Thomas Martin
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1754667

Ambient humidity significantly accelerates degradation of PZT films in microelectromechanical systems; the cause of such degradation is under debate. Here it is shown that the primary driving force for PZT degrading in humid conditions is coupled to the electrochemical activity of the system towards...

Authors Dahl-Hansen Runar Plunnecke Akkopru-Akgun Betul Polfus Jonathan M. Vøllestad Einar Denis Lyndsey Coleman Kathleen Tyholdt Frode Trolier-Mckinstry Susan E Tybell Per Thomas Martin
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1662186

The number of application areas for piezoelectric micro electromechanical systems based on PZT have increased rapidly over the years. Thus, to continue the development towards commercial deployment, characterizing lifetime and reliability during operation in realistic and harsh environments is impor...

Authors Dahl-Hansen Runar Plunnecke Tybell Per Thomas Martin Tyholdt Frode
Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1660782

Lead Zirconate Titanate (Pb(Zrx,Ti1−x )O3) is, due to its high piezoresponse, widely used in piezoelectric Micro Electro Mechanical Systems (piezoMEMS) such as accelerometers, gyroscopes and actuators. However, since PZT is highly sensitive to humidity, devices tend to suffer severe degradation when...

Authors Dahl-Hansen Runar Plunnecke Tyholdt Frode Bakke Thor Gjessing Jo Vedum Jon Tybell Thomas
Year 2018
Type Conference lecture and academic presentation
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1631229

Bimorphly actuated piezoelectric thin films offer an efficient low-power route for generating microelectromechanical motion compared to e.g. electrostatic or thermo-mechanical actuation principles [1]. This is since a large effective in-plane stress can be generated by applying relatively low voltag...

Authors Dahl-Hansen Runar Plunnecke Dirdal Christopher Andrew Gjessing Jo Tyholdt Frode Tybell Thomas
Year 2018
Type Conference lecture and academic presentation