title: Optofluidic variable focus lenses.
abstract: Here we propose optofluidic spherical microlenses that can change their focal distance by varying the refractive index of the liquid that composes them. These lenses are fabricated in the bulk of a polymeric mixture. Results of a characterization study of the profile of the lenses, the image forming capability, and the behavior of the focal distance as a function of the refractive index are presented. Ionic liquids are suggested as a source of liquids useful for fabricating this type of lens.
authors.affiliation: Centro de Investigaciones en Optica, Loma del Bosque 115, León, Guanajuato, c.p. 37150, Mexico. scalixto@cio.mx
authors.forename: Sergio
authors.initials: S
authors.lastname: Calixto
authors.forename: M E
authors.initials: ME
authors.lastname: Sánchez-Morales
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Sánchez-Marin
authors.forename: Martha
authors.initials: M
authors.lastname: Rosete-Aguilar
authors.forename: Antonio Martínez
authors.initials: AM
authors.lastname: Richa
authors.forename: Karla A
authors.initials: KA
authors.lastname: Barrera-Rivera