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High precision nano scale temperature sensing using single defects in diamond | Philipp Neumann
; Ingmar Jakobi
; Florian Dolde
; Christian Burk
; Rolf Reuter
; Gerald Waldherr
; Jan Honert
; Thomas Wolf
; Andreas Brunner
; Jeong Hyun Shim
; Dieter Suter
; H. Sumiya
; Junichi Isoya
; Jörg Wrachtrup
; | Date: |
2 Apr 2013 | Abstract: | Measuring local temperature with a spatial resolution on the order of a few
nanometers has a wide range of applications from semiconductor industry over
material to life sciences. When combined with precision temperature measurement
it promises to give excess to small temperature changes caused e.g. by chemical
reactions or biochemical processes. However, nanoscale temperature measurements
and precision have excluded each other so far owing to the physical processes
used for temperature measurement of limited stability of nanoscale probes. Here
we experimentally demonstrate a novel nanoscale temperature sensing technique
based on single atomic defects in diamonds. Sensor sizes range from millimeter
down to a few tens of nanometers. Utilizing the sensitivity of the optically
accessible electron spin level structure to temperature changes we achieve a
temperature noise floor of 5 mK Hz$^{-1/2}$ for single defects in bulk sensors.
Using doped nanodiamonds as sensors yields temperature measurement with 130 mK
Hz$^{-1/2}$ noise floor and accuracies down to 1 mK at length scales of a few
ten nanometers. The high sensitivity to temperature changes together with
excellent spatial resolution combined with outstanding sensor stability allows
for nanoscale precision temperature determination enough to measure chemical
processes of few or single molecules by their reaction heat even in
heterogeneous environments like cells. | Source: | arXiv, 1304.0688 | Services: | Forum | Review | PDF | Favorites |
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