title: Multi force optical tweezers to generate gradients of forces.
abstract: We present a multi trap optical tweezes system that enables to generate two-dimensional dynamical configurations of focal spot where the trapping force of each element of the pattern can be individually changed. Force gradients in the pN range can be generated on a micrometer scale.
authors.forename: Valentina
authors.initials: V
authors.lastname: Emiliani
authors.forename: Daniele
authors.initials: D
authors.lastname: Sanvitto
authors.forename: Morad
authors.initials: M
authors.lastname: Zahid
authors.forename: Fabien
authors.initials: F
authors.lastname: Gerbal
authors.forename: Maite
authors.initials: M
authors.lastname: Coppey-Moisan