 Phase change meta-surfaces based on vanadium dioxide, which are pre-heated with electric current and optically addressed by projected structured light hologram, are considered to become a new paradigm in programmed terahertz slash mid-infrared flat optics. Macroscopic quasi-homogeneous arrays of gold nanoparticles show large linear infrared absorption and a significant photothermal effect capable of boosting a light-triggered switching of vanadium dioxide and are to be carefully examined. We propose a new approach to simultaneously probe the altered temperature and electric conductivity of a hybrid gold particle vanadium dioxide film composite by monitoring a phase shift and attenuating a surface acoustic wave in a yttrium lithium anniobate substrate. The method shows a temperature resolution of 0.1 degrees Celsius comparable with the best existing techniques for studying nanoscale objects and surfaces. Laser-induced photothermal effects were characterized in a macroscopic array of gold nanostars, gold nanostars, with different surface coverage, in a monolayer of. This article was authored by Vladimir Kitashev, Boris Kletsov, Maxim Kupov, and others. We are article.tv, links in the description below.