Nano Archive

Single quantum dots as local temperature markers

Li, Sha and Zhang, Kai and Yang, Jui-Ming and Lin, Liwei and Yang, Haw (2007) Single quantum dots as local temperature markers. NANO LETTERS, 7 (10). pp. 3102-3105.

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This work describes noncontact, local temperature measurements using wavelength shifts of CdSe quantum dots (QDs). Individual QDs are demonstrated to be capable of sensing temperature variations and reporting temperature changes remotely through optical readout. Temperature profiles of a microheater under different input voltages are evaluated based on the spectral shift of QDs on the heater, and results are consistent with a one-dimensional electrothermal model. The theoretical resolution of this technique could go down to the size of a single quantum dot using far-field optics for temperature characterizations of micro/nanostructures.

Item Type:Article
Subjects:Analytical Science > Nanotechnology for sensing and actuating
Physical Science > Nano objects
Physical Science > Quantum phenomena
ID Code:6249
Deposited By:IoN
Deposited On:07 Aug 2009 12:37
Last Modified:07 Aug 2009 12:37

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