In this Letter, we show that giant thermo-optical oscillations can be triggered in millimeter (mm)-size whispering gallery mode (WGM) disk resonators when they are pumped by a resonant continuous-wave laser. Our resonator is an ultrahigh-Q barium fluoride cavity that features a positive thermo-optic coefficient and a negative thermo-elastic coefficient. We demonstrate for the first time, to our...

Typically, the elastic and electrical properties of composite materials are strongly microstructure dependent. So it comes as a nice surprise to come across exact formulae for effective moduli that are universally valid no matter what the microstructure. Such exact formulae provide useful benchmarks for testing numerical and actual experimental data, and for evaluating the merit of various appr...

Gels with the ability to immobilize a liquid phase are structures of three-dimensional network. These types of gels consist of two parts, gelling agent (network forming) and liquid solvent phase (hydrophilic or hydrophobic). However, depending on the polarity of the liquid immobilized within the networked structure, gels may be termed either as hydro gels (polar solvent-water) or organogels (or...

Abstract In this work we study, from the numerical point of view, a one-dimensional thermoelastic problem where thermal law is type III. Quasi-static microvoids are also assumed within model. The variational formulation leads to coupled linear system made equations and it written in terms velocity, volume fraction temperature. Fully discrete approximations introduced by using finite element met...