Current advances in nanotechnology allow the design of sensors with multilayer architectures enabling exceptional performance and ultra-sensitive response. The development of a tunable micro/nano-mechanical resonator consisting of piezoelectric, photoresistive or functional (memory) materials usable in a wide range of applications, including biomedicine, photovoltaics or microelectronics, thus appears feasible. A sensor with such a complex structure inevitably exhibits nonlinear behavior resulting from both global and local nonlinearities. In order to be able to use this behavior to the benefit of the sensor, or to prevent it, it is necessary to understand it and be able to model it. The goal of the research topic is to study the given problem in detail both theoretically and experimentally with the aim of understanding the physical essence and thus enabling the development of new powerful sensors or nonlinear dynamic systems. For this purpose, multi-level mathematical models are developed, which are confronted with experiments carried out at partner workplaces and the synergy of experience of all participating teams is used.
Projekty
Publikace
STACHIV, I.; MACHŮ, Z.; ŠEVEČEK, O.; JENG, Y.; LI, W.; KOTOUL, M.; PRÁŠEK, J. Achievable accuracy of resonating nanomechanical systems for mass sensing of larger analytes in GDa range. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2022, roč. 224, č. červen, s. 1-15. ISSN: 0020-7403.
STACHIV, I.; MACHŮ, Z.; ŠEVEČEK, O.; TUHOVČÁK, O.; KOTOUL, M.; JENG, Y. Resolving measurement of large (similar to GDa) chemical/biomolecule complexes with multimode nanomechanical resonators. Sensors and Actuators B: Chemical, 2022, roč. 353, č. 15, s. 1-9. ISSN: 0925-4005.
STACHIV, I.; GAN, L.; KUO, CH.Y.; ŠITTNER, P.; ŠEVEČEK, O. Mass Spectrometry of Heavy Analytes and Large Biological Aggregates by Monitoring Changes in the Quality Factor of Nanomechanical Resonators in Air. ACS Sensors, 2020, roč. 5, č. 7, s. 2128-2135. ISSN: 2379-3694.
Contact person
prof. RNDr. Michal Kotoul, DrSc.