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Updated: Jul 28, 2026

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Purcell factor based understanding of enhancements in surface plasmon-coupled emission with DNA architectures
S Venkatesh1, Pradeep Kumar Badiya, Sai Sathish Ramamurthy
1Plasmonics Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Puttaparthi, Anantapur, Andhra Pradesh - 515134, India. rsaisathish@sssihl.edu.in.
Abstract:
We demonstrate the successful application of DNA thin films as dynamic bio-spacers in a surface plasmon-coupled emission platform. Site-directed DNA modification using silver and carbon nanomaterials resulted in an amplified Purcell factor (PF) and >130-fold fluorescence enhancements. We present unique architectures of DNA as a plasmonic spacer in metal-dielectric-metal substrates.
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