Development of local surface plasmon resonance sensor using gold nanoparticles

Marianna Beiderman; Menachem Motiei; Rachela Popovtzer; Dror Fixler

doi:10.1117/12.2509667

5 March 2019 Development of local surface plasmon resonance sensor using gold nanoparticles

Marianna Beiderman, Menachem Motiei, Rachela Popovtzer, Dror Fixler

Proceedings Volume 10891, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XVI; 108910O (2019) https://doi.org/10.1117/12.2509667
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

The healthcare industry is moving towards personalized medicine and patients seek greater role in their care. In this paper we describe a proof of concept of versatile optical sensor that potentially can be used for in vivo detection of biological events. The developed sensor comprises of a silver thin film glass slide and gold nanoparticles (GNPs) and allows detection of chemical changes using surface plasmon resonance (SPR), local surface plasmon resonance (LSPR) and fluorescence lifetime detection modalities. A change in spectrum was observed after removal of GNPs by 2-mercaptoethanol. Moreover, GNP conjugated to fluorescein were tested using fluorescence lifetime microscopy (FLIM) to enhance sensing capabilities and provide additional dimension for detection. The sensor has the potential to provide real-time analyses of different biological molecules, such as antibody and antigen, receptor and ligand, and complementary DNA fragments.

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Marianna Beiderman, Menachem Motiei, Rachela Popovtzer, and Dror Fixler "Development of local surface plasmon resonance sensor using gold nanoparticles", Proc. SPIE 10891, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XVI, 108910O (5 March 2019); https://doi.org/10.1117/12.2509667

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KEYWORDS

Silver

Gold

Nanoparticles

Fluorescence lifetime imaging

Sensors

Surface plasmons

Thin films

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