Superconducting vibrating wires are widely used in low-temperature measurem
ents. We report on the fabrication of silicon micromechanical resonators co
vered by a superconducting layer. These resonators are designed to be vibra
ting wire thermometers adapted for ultra-low-temperature experiments. We de
scribe the first tests at 4.2 K. (C) 2000 Elsevier Science B.V. All rights
reserved.