A temperature microsensor for measuring laser-induced heating in gold nanorods. Academic Article uri icon

abstract

  • Measuring temperature is an extensively explored field of analysis, but measuring a temperature change in a nanoparticle is a new challenge. Here, a microsensor is configured to measure temperature changes in gold nanorods in solution upon laser irradiation. The device consists of a silicon wafer coated with silicon nitride in which a microfabricated resistance temperature detector was embedded and attached to a digital multimeter. A polydimethylsiloxane mold served as a microcontainer for the sample attached on top of the silicon membrane. This enables laser irradiation of the gold nanorods and subsequent measurement of temperature changes. The results showed a temperature increase of 8 to 10C and good correlation with theoretical calculations and bulk sample direct temperature measurements. These results demonstrate the suitability of this simple temperature microsensor for determining laser-induced heating profiles of metallic nanomaterials; such measurements will be essential for optimizing therapeutic and catalytic applications.

published proceedings

  • Anal Bioanal Chem

altmetric score

  • 6.25

author list (cited authors)

  • Pacardo, D. B., Neupane, B., Wang, G., Gu, Z., Walker, G. M., & Ligler, F. S.

citation count

  • 13

complete list of authors

  • Pacardo, Dennis B||Neupane, Bhanu||Wang, Gufeng||Gu, Zhen||Walker, Glenn M||Ligler, Frances S

publication date

  • January 2015