Direct measurement of bull's-eye nanoantenna metal loss

Iman Hassani Nia, Sung J. Jang, Omer G. Memis, Ryan Gelfand, Hooman Mohseni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


The loss in optical antennas can affect their performance for their practical use in many branches of science such as biological and solar cell applications. However the big question is that how much loss is due to the joule heating in the metals. This would affect the efficiency of solar cells and is very important for single photon detection and also for some applications where high heat generation in nanoantennas is desirable, for example, payload release for cancer treatment. There are few groups who have done temperature measurements by methods such as Raman spectroscopy or fluorescence polarization anisotropy. The latter method, which is more reliable than Raman spectroscopy, requires the deposition of fluorescent molecules on the antenna surface. The molecules and the polarization of radiation rotate depending upon the surface temperature. The reported temperature measurement accuracy in this method is about 0.1° C. Here we present a method based on thermo-reflectance that allows better temperature accuracy as well as spatial resolution of 500 nm. Moreover, this method does not require the addition of new materials to the nanoantenna. We present the measured heat dissipation from bulla's-eye nanoantennas and compare them with 3D simulation results.

Original languageEnglish (US)
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties XI
ISBN (Print)9780819496591
StatePublished - Jan 1 2013
EventPlasmonics: Metallic Nanostructures and Their Optical Properties XI - San Diego, CA, United States
Duration: Aug 25 2013Aug 29 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherPlasmonics: Metallic Nanostructures and Their Optical Properties XI
Country/TerritoryUnited States
CitySan Diego, CA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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