High-Precision Nanoscale Temperature Sensing Using Single Defects in Diamond

• DOI: 10.1021/nl401216y
• Publication Date: 2013-05-30T21:09:07Z
• Authors: P. Neumann; I. Jakobi; F. Dolde; C. Burk; R. Reuter; G. Waldherr; J. Honert; T. Wolf; A. Brunner; J. H. Shim; D. Suter; H. Sumiya; J. Isoya; J. Wrachtrup
• Keywords: Nanometre; Atmospheric temperature range

Measuring local temperature with a spatial resolution on the order of few nanometers has wide range applications from semiconductor industry over material to life sciences. When combined precision measurement it promises give excess small changes caused e.g. by chemical reactions or biochemical processes. However, nanoscale measurements and have excluded each other so far owing physical processes used for limited stability probes. Here we experimentally demonstrate novel sensing technique based single atomic defects in diamonds. Sensor sizes millimeter down tens nanometers. Utilizing sensitivity optically accessible electron spin level structure achieve noise floor 5 mK Hz$^{-1/2}$ bulk sensors. Using doped nanodiamonds as sensors yields 130 accuracies 1 at length scales ten The high together excellent outstanding sensor allows determination enough measure molecules their reaction heat even heterogeneous environments like cells.