Continuous tuning of phase transition temperature in VO2 thin films on c-cut sapphire substrates via strain variation Jie Jian and Haiyan Wang, Purdue University VO2 shows great potential in various electrical and optical devices The Tc of VO2 films can be tuned for 20 ºC in two simple approaches: varying VO2 thickness and VO2/AZO interface roughness The Tc tuning is without significant degradation of other transition properties. TEM characterizations on VO2/AZO/c-cut Al2O3 Tc tuning by varying VO2 film thickness Lattice matching between VO2 and ZnO NEEDS Annual Review: May 8-9, 2017