Spatio-temporal thermal kinetics of in situ MWCNT heating in biological tissues under NIR laser irradiation

Carbon nanotubes have many potential applications in life sciences and engineering as they have very high absorbance in the near-infrared (NIR) spectrum, while biological tissues do not. The purpose of this study was to determine the effect of 1064 nm NIR laser power levels on the spatial temperatur...

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Bibliographic Details
Published in:Nanotechnology 2010-10, Vol.21 (43), p.435101-435101
Main Authors: Picou, Laura, McMann, Casey, Elzer, Philip H, Enright, Frederick M, Biris, Alexandru S, Boldor, Dorin
Format: Article
Language:English
Subjects:
Animals
Biological
Chickens
Heating
Hot Temperature
Infrared
Infrared Rays
Kinetics
Lasers
Life sciences
Nanotechnology
Nanotubes, Carbon - chemistry
Nanotubes, Carbon - ultrastructure
Organ Specificity
Surface Properties
Temperature distribution
Time Factors
Wings, Animal - anatomy & histology
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Summary:Carbon nanotubes have many potential applications in life sciences and engineering as they have very high absorbance in the near-infrared (NIR) spectrum, while biological tissues do not. The purpose of this study was to determine the effect of 1064 nm NIR laser power levels on the spatial temperature distribution and the temperature kinetics in mammalian tissue at both macroscopic and microscopic scales. The model tissue was the 'flat' of a chicken wing (the section containing the radius and ulna), which was injected under the skin in the subcutaneous layer of tissue. Specimens were exposed to laser radiation and an infrared thermography system was used to measure and record the temperature distributions in the specimens at both the macroscopic and microscopic scales. Experimental results concluded that power levels of 1536 mW easily achieved hyperthermic temperatures with localized values as high as 172.7 °C.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/21/43/435101