title: Electromechanical actuation and current-induced metastable states in suspended single-crystalline VO₂ nanoplatelets.
abstract: Current-induced electromechanical actuation enabled by the metal-insulator transition in VO(2) nanoplatelets is demonstrated. The Joule heating by a sufficient current flowing through suspended nanoplatelets results in formation of heterophase domain patterns and is accompanied by nanoplatelet deformation. The actuation action can be achieved in a wide temperature range below the bulk phase transition temperature (68 °C). The observed current-sustained heterophase domain structures should be interpreted as distinct metastable states in free-standing and end-clamped VO(2) samples. We analyze the main prerequisites for the realization of a current-controlled actuator based on the proposed concept.
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States. eva@ornl.gov
authors.forename: Alexander
authors.initials: A
authors.lastname: Tselev
authors.forename: John D
authors.initials: JD
authors.lastname: Budai
authors.forename: Evgheni
authors.initials: E
authors.lastname: Strelcov
authors.forename: Jonathan Z
authors.initials: JZ
authors.lastname: Tischler
authors.forename: Andrei
authors.initials: A
authors.lastname: Kolmakov
authors.forename: Sergei V
authors.initials: SV
authors.lastname: Kalinin