Enhancement of diffraction-based biosensing using porous structures and electromagnetic surface states

J. E. Sipe; J. D. Ryckman; S. M. Weiss; M. Liscidini

doi:10.1117/12.842431

25 February 2010 Enhancement of diffraction-based biosensing using porous structures and electromagnetic surface states

J. E. Sipe, J. D. Ryckman, S. M. Weiss, M. Liscidini

Proceedings Volume 7553, Frontiers in Pathogen Detection: From Nanosensors to Systems; 75530M (2010) https://doi.org/10.1117/12.842431
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

Diffraction-based biosensors are often based on the adsorption of a target material on a grating made of thin layers, where the adsorption is detected by a modification of the diffracted signal. In this communication we discuss two strategies for enhancing this detection process. The first is based on the use of grating structures made of porous elements, where sensing is based on target molecules penetrating into the elements and modifying their effective index of refraction. The second is a resonant process where the effectiveness of the grating is enhanced by the coupling to surface electromagnetic states, in particular Bloch surface waves that exist at the interface between a homogeneous medium and a photonic crystal.

Citation Download Citation

J. E. Sipe, J. D. Ryckman, S. M. Weiss, and M. Liscidini "Enhancement of diffraction-based biosensing using porous structures and electromagnetic surface states", Proc. SPIE 7553, Frontiers in Pathogen Detection: From Nanosensors to Systems, 75530M (25 February 2010); https://doi.org/10.1117/12.842431

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available