Time-Resolved Luminescence Nanothermometry with Nitrogen-Vacancy Centers in Nanodiamonds
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-05-07 |
| Journal | Nano Letters |
| Authors | YanāKai Tzeng, PeiāChang Tsai, Hsiou-Yuan Liu, Oliver Y. ChĆ©n, HsiangāChen Hsu |
| Institutions | National Taiwan University, National Taiwan University of Science and Technology |
| Citations | 118 |
Abstract
Section titled āAbstractāMeasuring temperature in nanoscale spatial resolution either at or far from equilibrium is of importance in many scientific and technological applications. Although negatively charged nitrogen-vacancy (NV(-)) centers in diamond have recently emerged as a promising nanometric temperature sensor, the technique has been applied only under steady state conditions so far. Here, we present a three-point sampling method that allows real-time monitoring of the temperature changes over Ā±100 K and a pump-probe-type experiment that enables the study of nanoscale heat transfer with a temporal resolution of better than 10 Ī¼s. The utility of the time-resolved luminescence nanothermometry was demonstrated with 100 nm fluorescent nanodiamonds spin-coated on a glass substrate and submerged in gold nanorod solution heated by a near-infrared laser, and the validity of the measurements was verified with finite-element numerical simulations. The combined theoretical and experimental approaches will be useful to implement time-resolved temperature sensing in laser processing of materials and even for devices in operation at the nanometer scale.