Direct measurement of bull’s-eye nanoantenna metal loss

Iman Hassani Nia; Sung Jun Jang; Omer Gokalp Memis; Ryan Gelfand; Hooman Mohseni

doi:10.1117/12.2024892

11 September 2013 Direct measurement of bull’s-eye nanoantenna metal loss

Iman Hassani Nia, Sung Jun Jang, Omer Gokalp Memis, Ryan Gelfand, Hooman Mohseni

Proceedings Volume 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI; 880918 (2013) https://doi.org/10.1117/12.2024892
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

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 bull’s-eye nanoantennas and compare them with 3D simulation results.

Citation Download Citation

Iman Hassani Nia, Sung Jun Jang, Omer Gokalp Memis, Ryan Gelfand, and Hooman Mohseni "Direct measurement of bull’s-eye nanoantenna metal loss", Proc. SPIE 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, 880918 (11 September 2013); https://doi.org/10.1117/12.2024892

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KEYWORDS

Nanoantennas

Temperature metrology

Metals

Gold

Cameras

Plasmonics

Calibration

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