title: Fluorescent two-photon nanolithography.
abstract: Improving the excitation conditions in two-photon fluorescent lithography reduces the size of the fabricated structures to nanometre scales. We demonstrate that a precise control of the illumination profile and the scanning speed of the laser beam is enough to decrease the photo-polymerization volume of resins by orders of magnitude. This work also shows experimental evidence of surface effects that yield a different polymerization intensity threshold compared with bulk. Such phenomenon enables to perform a non-linear optical nanolithography in a simple way, allowing fast-prototyping procedures. We present a detailed study of the polymer growth process using fluorescence and atomic force microscopy.
authors.affiliation: Departamento de Física, FCEN, Universidad de Buenos Aires, Buenos Aires, Argentina. dkunik@df.uba.ar
authors.forename: D
authors.initials: D
authors.lastname: Kunik
authors.forename: S J
authors.initials: SJ
authors.lastname: Ludueña
authors.forename: S
authors.initials: S
authors.lastname: Costantino
authors.forename: O E
authors.initials: OE
authors.lastname: Martínez