Gold nanocrescents for remotely measuring and controlling local temperature

TL;DR

This paper introduces gold nanocrescents as nano-thermometers and nano-heaters, enabling remote measurement and control of local temperature through rotational Brownian motion and plasmonic properties.

Contribution

The study presents a novel method using gold nanocrescents for simultaneous remote temperature sensing and heating at the nanoscale.

Findings

High-accuracy temperature measurement via rotational scattering correlation spectroscopy.

Nanocrescents can act as both thermometers and nano-heaters.

Effective remote temperature control demonstrated.

Abstract

We present a novel technique to remotely measure and control the local temperature within a medium. This technique is based on the observation of the rotational Brownian motion of gold nanocrescent particles, which possess a strong anisotropic light interaction due to their plasmonic properties. Rotational scattering correlation spectroscopy performed on a single nanoparticle is able to determine the local temperature with high accuracy. These nano-thermometers can simultaneously play the role of nano-heaters when absorbing the light of a focused laser beam.