Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published January 2014 | Supplemental Material + Published
Journal Article Open

Handheld high-throughput plasmonic biosensor using computational on-chip imaging

Abstract

We demonstrate a handheld on-chip biosensing technology that employs plasmonic microarrays coupled with a lens-free computational imaging system towards multiplexed and high-throughput screening of biomolecular interactions for point-of-care applications and resource-limited settings. This lightweight and field-portable biosensing device, weighing 60 g and 7.5 cm tall, utilizes a compact optoelectronic sensor array to record the diffraction patterns of plasmonic nanostructures under uniform illumination by a single-light emitting diode tuned to the plasmonic mode of the nanoapertures. Employing a sensitive plasmonic array design that is combined with lens-free computational imaging, we demonstrate label-free and quantitative detection of biomolecules with a protein layer thickness down to 3 nm. Integrating large-scale plasmonic microarrays, our on-chip imaging platform enables simultaneous detection of protein mono- and bilayers on the same platform over a wide range of biomolecule concentrations. In this handheld device, we also employ an iterative phase retrieval-based image reconstruction method, which offers the ability to digitally image a highly multiplexed array of sensors on the same plasmonic chip, making this approach especially suitable for high-throughput diagnostic applications in field settings.

Additional Information

© 2014 CIOMP. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs Works 3.0 Unported license. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0 Received 8 April 2013; Revised 21 August 2013; Accepted 27 August 2013. Altug Research Group acknowledges National Science Foundation (NSF) CAREER Award, Presidential Early Career Award for Scientist and Engineers (PECASE) ECCS-0954790, Office of Naval Research Young Investigator Award 11PR00755-00-P00001, NSF Engineering Research Center on Smart Lighting EEC-0812056, Massachusetts Life Sciences Center Young Investigator award and Ecole Polytechnique Federale de Lausanne. Ozcan Research Group acknowledges the support of PECASE, Army Research Office (ARO) Life Sciences Division, ARO Young Investigator Award, NSF CAREER Award, ONR Young Investigator Award and the National Institute of Health (NIH) Director's New Innovator Award DP2OD006427 from the Office of The Director, NIH and the NSF EFRI Award.

Attached Files

Published - lsa20143a.pdf

Supplemental Material - lsa20143x1.docx

Files

lsa20143a.pdf
Files (8.4 MB)
Name Size Download all
md5:aa1322633d658824ef9fe67436552615
2.5 MB Preview Download
md5:263ff02b85cf525976034e8dff927d3e
5.9 MB Download

Additional details

Created:
August 22, 2023
Modified:
October 26, 2023