The LIME team at MPQ laboratory, in collaboration with CEA LETI in Grenoble, has published an article in Microsystems & Nanoengineering presenting an optomechanical platform for characterizing the rheological, optical, and thermal properties of fluids at the micrometric scale.
(Left) Top-view of a suspended silicon disk adjacent to a tapered optical bus waveguide. (Right) Measured power spectral density around the first radial breathing mode of the disk immersed in a binary mixture of water/glycerol of varying concentration.
Using analytical models for fluid-structure interactions, thermo-optical effects, and thermal diffusion, this platform—a suspended silicon microdisk—enables the determination of the viscosity, density, compressibility, refractive index, and thermal conductivity of the fluid in a compact measurement configuration, at rest and in thermal equilibrium.
Reference :
Contact : Ivan Favero
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