Sensing of the Molecular Spin in Spin-Crossover Nanoparticles with Micromechanical Resonators

Julien Dugay*, Mónica Giménez-Marqués, Warner J. Venstra, Ramón Torres-Cavanillas, Umit N. Sheombarsing, Nicola Manca, Eugenio Coronado, Herre S.J. Van Der Zant

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)
93 Downloads (Pure)


In the past years, the use of highly sensitive silicon microelectromechanical cantilevers has been proposed as a tool to characterize the spin-crossover phenomenon by employing fast optical readout of the motion. In this work, Fe II -based spin-crossover nanoparticles of the well-known [Fe(Htrz) 2 (trz)](BF 4 ) complex wrapped with thin silica shells of different sizes will be studied by means of silicon microresonators. The silica shell will enhance its chemical stability, whereas the low thickness will allow a proper mechanical coupling between the cantilever and the spin-crossover core. To maximize the sensing of the spin-crossover phenomena, different cantilever geometries and flexural modes were employed. In addition, the experimental observations were also compared with COMSOL numerical simulations, which are in close agreement with them. The probe of spin-crossover phenomena with micro- and nanoelectromechanical actuators offers the possibility of preparing smart sensing memory devices near/above room temperature.

Original languageEnglish
Pages (from-to)6778-6786
JournalJournal of Physical Chemistry C
Issue number11
Publication statusPublished - 2019

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


Dive into the research topics of 'Sensing of the Molecular Spin in Spin-Crossover Nanoparticles with Micromechanical Resonators'. Together they form a unique fingerprint.

Cite this