Bimetallic silver-gold nanostars: synthesis, surface modification, and application in SERS sensing

Supriya Atta; Tuan Vo-Dinh

doi:10.1117/12.3003586

13 March 2024 Bimetallic silver-gold nanostars: synthesis, surface modification, and application in SERS sensing

Supriya Atta, Tuan Vo-Dinh

Proceedings Volume PC12860, Plasmonics in Biology and Medicine XXI; PC1286003 (2024) https://doi.org/10.1117/12.3003586
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

We will discuss here a new seed-mediated synthesis of BGNS-Ag in which the morphology of the BGNS-Ag can be tuned precisely. Thus their plasmon resonances can be tuned by changing the concentration of the chemicals required in this synthesis. Herein we show how the concentration of AgNO3 plays a significant role in the spike length and spike sharpness. To illustrate the usefulness of the BGNS-Ag morphology in practical real-world in-field applications, we will discuss that the BGNS-Ag can be utilized as a solution-based SERS detection of a variety of analytes including illegal drugs (heroin, cocaine, and fentanyl), biomarkers (pyocyanin, methimazole), pesticides (thiram, ziram), and many more.

Conference Presentation

Citation Download Citation

Supriya Atta and Tuan Vo-Dinh "Bimetallic silver-gold nanostars: synthesis, surface modification, and application in SERS sensing", Proc. SPIE PC12860, Plasmonics in Biology and Medicine XXI, PC1286003 (13 March 2024); https://doi.org/10.1117/12.3003586

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