Presentation Title

Synthesis of concave Au and Ag nanoprisms containing SERS ‘hotspots’

Faculty Mentor

Fan Yang

Start Date

18-11-2017 10:00 AM

End Date

18-11-2017 11:00 AM

Location

BSC-Ursa Minor 106

Session

Poster 1

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

We replicate known seedless synthesis and seeded growths of Au and Ag nanoplates to create a plate with concavities that act as Surface Enhanced Raman Scattering (SERS) hotspots. Firstly, we recreated a seedless synthesis of gold nanoprisms, to which SiO2 nanospheres were attached. Next, different amounts of TEOS was added (to further increase volume of silica sphere.) When set to the right conditions, the gold tips that are not covered in silica will act as seeds for the extended growth . Once the product has the desired morphology the silica is washed off using HCl and its desired morphology should remain. Due to time restraints the SERS properties of the substrate were not tested. In theory the concavities are where the electric field enhancement will occur.

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Nov 18th, 10:00 AM Nov 18th, 11:00 AM

Synthesis of concave Au and Ag nanoprisms containing SERS ‘hotspots’

BSC-Ursa Minor 106

We replicate known seedless synthesis and seeded growths of Au and Ag nanoplates to create a plate with concavities that act as Surface Enhanced Raman Scattering (SERS) hotspots. Firstly, we recreated a seedless synthesis of gold nanoprisms, to which SiO2 nanospheres were attached. Next, different amounts of TEOS was added (to further increase volume of silica sphere.) When set to the right conditions, the gold tips that are not covered in silica will act as seeds for the extended growth . Once the product has the desired morphology the silica is washed off using HCl and its desired morphology should remain. Due to time restraints the SERS properties of the substrate were not tested. In theory the concavities are where the electric field enhancement will occur.