The electrophotonic silicon biosensor.

Abstract:

:The emergence of personalized and stratified medicine requires label-free, low-cost diagnostic technology capable of monitoring multiple disease biomarkers in parallel. Silicon photonic biosensors combine high-sensitivity analysis with scalable, low-cost manufacturing, but they tend to measure only a single biomarker and provide no information about their (bio)chemical activity. Here we introduce an electrochemical silicon photonic sensor capable of highly sensitive and multiparameter profiling of biomarkers. Our electrophotonic technology consists of microring resonators optimally n-doped to support high Q resonances alongside electrochemical processes in situ. The inclusion of electrochemical control enables site-selective immobilization of different biomolecules on individual microrings within a sensor array. The combination of photonic and electrochemical characterization also provides additional quantitative information and unique insight into chemical reactivity that is unavailable with photonic detection alone. By exploiting both the photonic and the electrical properties of silicon, the sensor opens new modalities for sensing on the microscale.

journal_name

Nat Commun

journal_title

Nature communications

authors

Juan-Colás J,Parkin A,Dunn KE,Scullion MG,Krauss TF,Johnson SD

doi

10.1038/ncomms12769

subject

Has Abstract

pub_date

2016-09-14 00:00:00

pages

12769

issn

2041-1723

pii

ncomms12769

journal_volume

7

pub_type

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