Impact of Strain in Free-Standing PtSe2 in Scalable 2D MEMS

Impact of Strain in Free-Standing PtSe2 in Scalable 2D MEMS

© 2025 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 18. Aug., Seite e12564
1. Verfasser: Heiserer, Stefan (VerfasserIn)
Weitere Verfasser: Galfe, Natalie, Loibl, Michael, Wagner, Maximilian, Hartwig, Oliver, Schlosser, Simon, Boche, Silke, Thornley, William, Clark, Nick, Lee, Kangho, Stimpel-Lindner, Tanja, Ó Coileáin, Cormac, Kiendl, Josef, Haigh, Sarah J, de Coster, George J, Duesberg, Georg S, Seifert, Paul
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article 2D material MEMS NEMS PtSe2 piezo resistivity strain
Beschreibung
Zusammenfassung:© 2025 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
2D layered materials such as PtSe2 are prime candidates for next-generation micro- and nano-electro-mechanical systems (MEMS/NEMS), including piezoresistive sensors. However, due to difficulties in large-scale synthesis and the inherent drawbacks associated with mechanical transfer of 2D material films, scalable NEMS production remains challenging. In this work, we report a fabrication route for free-standing, as-grown 2D material channels of PtSe2 with controlled dimensions, avoiding a mechanical film transfer. The free-standing devices provide a universal platform for strain engineering of 2D materials because tension can be easily controlled by application of a back-contact voltage. Moreover, the piezoresistivity of PtSe2, together with the possibility of wafer-scale synthesis at back-end-of-line compatible growth temperatures, make it ideally suited for scalable incorporation into integrated circuits. Our measurements show that the material properties can be tuned via strain, which offers pathways for classically non-gateable materials in electronic and photonic devices. Finite element simulations of representative free-standing films elucidate the nano-mechanical properties of large-scale-grown, polycrystalline 2D materials under tensile strain and demonstrate the influence of polycrystallinity on the optical and electrical behavior
Beschreibung:Date Revised 18.08.2025
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202412564