Frequency Tuning of $\hbox{VO}_{2}$ -Coated Buckled Microbridges

This letter reports a resonant frequency shift of approximately - 23% for a VO
₂
-coated silicon dioxide (SiO
₂
) buckled microbridge when the coating's insulator-to-metal transition (IMT) is thermally induced by heat conduction using a Peltier heater or by light irradiation from a laser diode. The frequency tuning is attributed to the large stress levels developed during the IMT and the large sensitivity of buckled microbridges to changes in stress.