A temperature microsensor for measuring laser-induced heating in gold nanorods

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 co...

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Bibliographic Details
Published in:Analytical and bioanalytical chemistry 2015-01, Vol.407 (3), p.719-725
Main Authors: Pacardo, Dennis B., Neupane, Bhanu, Wang, Gufeng, Gu, Zhen, Walker, Glenn M., Ligler, Frances S.
Format: Article
Language:English
Subjects:
ABCs 13th Anniversary
Analytical Chemistry
Biochemistry
Cancer
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Chemistry Techniques, Analytical - instrumentation
Chemistry Techniques, Analytical - methods
Devices
Enzymes
Equipment Design
Experimental methods
Food Science
Gold
Heating
Hot Temperature
Hyperthermia
Irradiation
Laboratory Medicine
Lasers
Light
Mathematical analysis
Microtechnology
Monitoring/Environmental Analysis
Nanomaterials
Nanoparticles
Nanorods
Nanostructure
Nanotechnology
Nanotubes - analysis
Optical properties
Rapid Communication
Research methodology
Sensors
Silicon
Silicon nitride
Silicon wafers
Temperature measurement
Temperature measuring instruments
Thermal energy
Thermal properties
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Summary: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 10 °C 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.
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-014-8222-9