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Investigation of dual plasmonic core-shell Ag@CuS nanoparticles for potential surface-enhanced Raman
Anindita Das1, Vinothini Arunagiri2, Hsieh-Chih Tsai2,3,4
1Department of Physics, Nanophotonics Lab, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, Jharkhand, India.
Abstract:
Aim: To prepare efficient metal-semiconductor nanoparticles as noninvasive, real-time imaging probes for photothermal therapy (PTT) applications. Materials & methods: A bottom-up approach was used to fabricate core-shell Ag@CuS nanoparticles (NPs). PTT and Raman mapping were done using HeLa cells. Theoretical simulation of electric field enhancement and heat dissipation density of Ag@CuS NPs was performed. Results: PTT-induced hyperthermia was achieved under 940 nm near-infrared light irradiation. Surface-enhanced Raman spectroscopy (SERS) signals of dye molecules were observed when conjugated with Ag@CuS NPs. Conclusion: Ag@CuS NPs are found to be efficient for SERS imaging and localized heating under laser irradiation, making a promising candidate for SERS-guided PTT.
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