Publicado

2011-03-01

DESIGN AND CHARACTERIZATION OF THERMALLY ACTUATED BIMETALLIC MEMBRANES BY MICHELSON INTERFEROMETRY

Palabras clave:

Bietallic effect, micromembranes, interferometry, Finite Element Method (es)

Descargas

Autores/as

  • JULIO ENRIQUE DUARTE Licenciado en Física, Doctor en Física, Universidad Pedagógica y Tecnológica de Colombia
  • FLAVIO HUMBERTO FERNÁNDEZ MORALES Ingeniero Electrónico, Doctor en Electrónica, Universidad Pedagógica y Tecnológica de Colombia
  • ESTELA MARTIN-BADOSA Department of Applied Physics and Optics, Laboratory of Optics, Faculty of Physics, University of Barcelona, Spain
This paper presents the design and characterization of thermally actuated Al-Si bimetallic membranes. The design was made with the Finite Element Method and was emphasized on optimizing the thickness ratio between the aluminum and silicon layers. The membrane deflection was measured employing the Michelson Interferometer. The experimental process was carried out with square membranes of 5 mm of side length, 10 mm in silicon thickness, and an aluminum thicknesses of 4 and 1 mm. A maximum deflection of 14 mm was obtained for membranes with 4 mm of aluminum thickness, which is consistent with predictions made by numerical calculations.