Microfabrication of large area high-stress silicon nitride membranes for   optomechanical devices
  In view of the integration of membrane resonators with more complex MEMS structures, we developed a general fabrication procedure for circular shape SiN$_x$ membranes using Deep Reactive Ion Etching (DRIE). Large area and high-stress SiN$_x$ membranes were fabricated and used as optomechanical resonators in a Michelson interferometer and in a Fabry-P\'erot cavity. The measurements show that the fabrication process preserves both the optical quality and the mechanical quality factor of the membrane. 
E. Serra, M. Bawaj, A. Borrielli, G. Di Giuseppe, S. Forte, N. Kralj,   N. Malossi, L. Marconi, F. Marin, F. Marino, B. Mora...
quant-ph