title: A Fresnel zone plate biosensor for signal amplification with enhanced signal-to-noise ratio.
abstract: We describe a signal amplified biosensor based on self-assembled optical diffraction grating of a Fresnel zone plate structure. Diffracted light rays passed through gratings are interfered constructively at the focal point, resulting in the enhanced signal amplification without sacrificing signal-to-noise ratio (SNR).
authors.affiliation: Department of Chemical and Biomolecular Engineering, KAIST, 373-1, Daejeon, 305-701, Republic of Korea.  ycjeong@kaist.ac.kr.
authors.forename: Yong-Cheol
authors.initials: YC
authors.lastname: Jeong
authors.forename: Bokyung
authors.initials: B
authors.lastname: Jung
authors.forename: Jung-Hwan
authors.initials: JH
authors.lastname: Park
authors.forename: Jung-Ki
authors.initials: JK
authors.lastname: Park