title: Porous Silicon Based Resonant Mirrors for Biochemical Sensing.
abstract: We report on our preliminary results in the realization and characterization of a porous silicon (PSi) resonant mirror (RM) for optical biosensing. We have numerically and experimentally studied the coupling between the electromagnetic field, totally reflected at the base of a high refractive index prism, and the optical modes of a PSi waveguide. This configuration is very sensitive to changes in the refractive index and/or in thickness of the sensor surface. Due to the high specific area of the PSi waveguide, very low DNA concentrations can be detected confirming that the RM could be a very sensitive and labelfree optical biosensor.
authors.affiliation: Institute for Microelectronics and Microsystems - Unit of Naples - National Council of Research, Via P. Castellino 111, 80131 Napoli, Italy. edetommasi@na.imm.cnr.it.
authors.forename: Edoardo
authors.initials: E
authors.lastname: De Tommasi
authors.affiliation: Institute for Microelectronics and Microsystems - Unit of Naples - National Council of Research, Via P. Castellino 111, 80131 Napoli, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: De Stefano
authors.affiliation: Institute for Microelectronics and Microsystems - Unit of Naples - National Council of Research, Via P. Castellino 111, 80131 Napoli, Italy.|Department of Physical Sciences, University of Naples "Federico II", Via Cinthia, 80126 Naples, Italy.
authors.forename: Ilaria
authors.initials: I
authors.lastname: Rea
authors.affiliation: Institute for Microelectronics and Microsystems - Unit of Naples - National Council of Research, Via P. Castellino 111, 80131 Napoli, Italy.|Department of Physical Sciences, University of Naples "Federico II", Via Cinthia, 80126 Naples, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Di Sarno
authors.affiliation: Institute for Microelectronics and Microsystems - Unit of Naples - National Council of Research, Via P. Castellino 111, 80131 Napoli, Italy.|Department of Organic Chemistry and Biochemistry, University of Naples "Federico II", Via Cinthia, 80128 Napoli, Italy.
authors.forename: Lucia
authors.initials: L
authors.lastname: Rotiroti
authors.affiliation: Department of Biochemistry and Medical Biotechnologies, University of Naples "Federico II", Via S. Pansini 5, 80131 Napoli, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Arcari
authors.affiliation: Department of Biochemistry and Medical Biotechnologies, University of Naples "Federico II", Via S. Pansini 5, 80131 Napoli, Italy.
authors.forename: Annalisa
authors.initials: A
authors.lastname: Lamberti
authors.affiliation: Department of Biochemistry and Medical Biotechnologies, University of Naples "Federico II", Via S. Pansini 5, 80131 Napoli, Italy.
authors.forename: Carmen
authors.initials: C
authors.lastname: Sanges
authors.affiliation: Institute for Microelectronics and Microsystems - Unit of Naples - National Council of Research, Via P. Castellino 111, 80131 Napoli, Italy.
authors.forename: Ivo
authors.initials: I
authors.lastname: Rendina
keywords: DNA Optical Biosensors; Porous Silicon; Resonant Mirrors