Scopus Indexed Paper

Paper Details


Title
Porous silicon sensors: From on-chip to mobile diagnostics
Abstract
Porous silicon (PSi) has been recognized as an advantageous material for use in optical biosensors due to its large internal surface area, ability to form multilayer optical structures, and compatibility with standard silicon lithographic techniques. We demonstrate an order of magnitude improvement in small molecule detection sensitivity for on-chip PSi ring resonators and photonic crystal nanobeams compared to the same structures fabricated on silicon-on-insulator wafers. Moreover, we demonstrate that PSi optical structures can be exploited for mobile diagnostics by using a smartphone with no additional functional accessories to detect color changes in the PSi that result from molecule capture.
Keywords
Authors
Tengfei Cao, Caitlin Carfano, Gilberto A. Rodriguez, Moinul H. Choudhury, Francis O. Afzal, Sharon M. Weiss
Phone
Journal or Conference Name
Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Publish Year
2019
Indexing
Scopus