Single quantum dots as local temperature markers

Sha Li, Kai Zhang, Jui Ming Yang, Liwei Lin, Haw Yang

Research output: Contribution to journalArticlepeer-review

221 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)3102-3105
Number of pages4
JournalNano Letters
Issue number10
StatePublished - Oct 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • Mechanical Engineering
  • Bioengineering
  • General Materials Science


Dive into the research topics of 'Single quantum dots as local temperature markers'. Together they form a unique fingerprint.

Cite this