On-chip multivariant COVID 19 photonic sensor based on silicon nitride double-microring resonators

Arieh Grosman*, Tal Duanis-Assaf, Noa Mazurski, Roy Zektzer, Christian Frydendahl, Liron Stern, Meital Reches, Uriel Levy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Coronavirus disease 2019 (COVID-19) is a newly emerging human infectious disease that continues to develop new variants. A crucial step in the quest to reduce the infection is the development of rapid and reliable virus detectors. Here, we report a chip scale photonic sensing device consisting of a silicon-nitride double microring resonator (MRR) for detecting SARS-CoV-2 in clinical samples. The sensor is implemented by surface activation of one of the MRRs, acting as a probe, with DNA primers for SARS-CoV-2 RNA, whereas the other MRR is used as a reference. The performance of the sensor is determined by applying different amounts of SARS-CoV-2 complementary RNA. As will be shown in the paper, our device detects the RNA fragments at concentrations of 10 cp/μL and with sensitivity of 750 nm/RIU. As such, it shows a promise toward the implementation of label-free, small form factor, CMOS compatible biosensor for SARS-CoV-2, which is also environment, temperature, and pressure independent. Our approach can also be used for detecting other SARS-CoV-2 genes, as well as other viruses and pathogens.

Original languageAmerican English
Pages (from-to)2831-2839
Number of pages9
JournalNanophotonics
Volume12
Issue number14
DOIs
StatePublished - 1 Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 the author(s), published by De Gruyter, Berlin/Boston.

Keywords

  • COVID-19
  • biosensors
  • micro ring resonator; nanophotonics; silicon-photonics; SiN

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