Tuning of the temperature dependence of the resonance frequency shift in atomically thin mechanical resonators with van der Waals heterojunctions
Source abstract
Abstract
Abstract Atomically thin two-dimensional (2D) mechanical resonators should realize highly sensitive force sensors and high performance nano-electro-mechanical systems due to their excellent electrical and mechanical properties. However, practical applications require stability of the resonance frequencies against temperature. Here, we demonstrate the manipulation of the thermal expansion coefficients (TECs) by creating a van der Waals heterojunction using graphene and MoS 2 , which have opposite signs of TECs. Our method greatly suppresses the apparent TEC of the 2D heterojunction to 1/3 of the monolayer graphene without the detraction of the tunability of the resonance frequency by electrostatic attraction.
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Research context
OpenAlex topics: Mechanical and Optical Resonators · Force Microscopy Techniques and Applications · Quantum Electrodynamics and Casimir Effect
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Osaka Prefecture University
Funding
Japan Society for the Promotion of Science
References (41)
Show source-provided references
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