Fig. 3: Transient and steady-state optical measurements and thermal, mechanical simulations.
From: Gigahertz optoacoustic vibration in Sub-5 nm tip-supported nano-optomechanical metasurface
a Transient reflection spectra of the optomechanical metasurface supported on a monocrystalline silicon substrate and the silicon nanotip arrays. b Optical reflectance spectra of the optomechanical metasurface supported on a monocrystalline silicon substrate and the silicon nanotip arrays. c, d Simulated thermal distribution in the time domain of the two supported forms of the optomechanical metasurface. e, f The simulated geometric strain of the metasurface under the same prestress.
