Shifted‐excitation Raman difference spectroscopy for the detection of SERS‐encoded gold nanostar probes

Nanostar probes for tip-enhanced spectroscopy.

To overcome the current limit of tip-enhanced spectroscopy that is based on metallic nano-probes, we developed a new scanning probe with a metallic nanostar, a nanoparticle with sharp spikes. A Au nanoparticle of 5 nm was first attached to the end of a tip through DNA-DNA hybridization and mechanical pick-up. The nanoparticle was converted to a nanostar with a core diameter of ∼70 nm and spike ...

High Performance Method for Skin Roughness Detection Using Raman Spectroscopy

Glucose and Froctose Detection Using Raman Spectroscopy and Plasmonic Substrates Coated with Gold Nanoparticles

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Tailoring surface plasmons of high-density gold nanostar assemblies on metal films for surface-enhanced Raman spectroscopy.

Plasmonic systems based on metal nanoparticles on a metal film have generated great interest for surface-enhanced Raman spectroscopy (SERS) chemical sensors. In this study, we describe the fabrication of ultrasensitive SERS substrates based on high-density gold nanostar assemblies on silver films with tailored surface plasmons, where multiple field enhancements from particle-film and interparti...

high performance method for skin roughness detection using raman spectroscopy

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