Broadband thermoacoustic spectroscopy of single walled carbon nanotubes

Daniel R. Bauer, Xiong Wang, Jeff Vollin, Hao Xin, Russell S Witte

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

7 Citations (Scopus)

Abstract

Thermoacoustic imaging (TAI) is a promising new modality that shows potential for improved detection of small more easily treatable breast tumors. In TAI, an incident microwave pulse is locally absorbed, causing thermoelastic expansion and the generation of ultrasonic waves, which are detected to form an image proportional to the sample's absorption. This study explores the use of spectroscopic TAI used in conjunction with contrast agents, to increase the modality's diagnostic capabilities. The absorption magnitude and spectral properties of metallic and semiconducting single-walled carbon nanotubes (SWNT) are investigated. At 2.9 GHz both types of nanoparticles were found to generate ∼40% greater TA signal than water. The TA signal of each SWNT type was highly linearly correlated with nanoparticle concentration (R2 ≥ 0.98; p < 0.01). Furthermore, between 7 and 9 GHz, semiconducting and metallic SWNTs both exhibited strong positive absorption slopes of 1.75 AU/GHz and 2.8 AU/GHz, respectively, and relative to water. The absorption spectra of SWNTs could potentially be used to help discriminate them from healthy adipose tissue, enabling highly specific and contrast enhanced detection of small breast tumors.

Original languageEnglish (US)
Title of host publicationIEEE International Ultrasonics Symposium, IUS
Pages1204-1207
Number of pages4
DOIs
StatePublished - 2012
Event2012 IEEE International Ultrasonics Symposium, IUS 2012 - Dresden, Germany
Duration: Oct 7 2012Oct 10 2012

Other

Other2012 IEEE International Ultrasonics Symposium, IUS 2012
CountryGermany
CityDresden
Period10/7/1210/10/12

Fingerprint

carbon nanotubes
broadband
breast
tumors
adipose tissues
spectroscopy
nanoparticles
ultrasonic radiation
water
slopes
absorption spectra
microwaves
expansion
pulses

Keywords

  • breast cancer
  • contrast agents
  • dielectric properties
  • microwave imaging
  • spectroscopic

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Bauer, D. R., Wang, X., Vollin, J., Xin, H., & Witte, R. S. (2012). Broadband thermoacoustic spectroscopy of single walled carbon nanotubes. In IEEE International Ultrasonics Symposium, IUS (pp. 1204-1207). [6562555] https://doi.org/10.1109/ULTSYM.2012.0300

Broadband thermoacoustic spectroscopy of single walled carbon nanotubes. / Bauer, Daniel R.; Wang, Xiong; Vollin, Jeff; Xin, Hao; Witte, Russell S.

IEEE International Ultrasonics Symposium, IUS. 2012. p. 1204-1207 6562555.

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

Bauer, DR, Wang, X, Vollin, J, Xin, H & Witte, RS 2012, Broadband thermoacoustic spectroscopy of single walled carbon nanotubes. in IEEE International Ultrasonics Symposium, IUS., 6562555, pp. 1204-1207, 2012 IEEE International Ultrasonics Symposium, IUS 2012, Dresden, Germany, 10/7/12. https://doi.org/10.1109/ULTSYM.2012.0300
Bauer DR, Wang X, Vollin J, Xin H, Witte RS. Broadband thermoacoustic spectroscopy of single walled carbon nanotubes. In IEEE International Ultrasonics Symposium, IUS. 2012. p. 1204-1207. 6562555 https://doi.org/10.1109/ULTSYM.2012.0300
Bauer, Daniel R. ; Wang, Xiong ; Vollin, Jeff ; Xin, Hao ; Witte, Russell S. / Broadband thermoacoustic spectroscopy of single walled carbon nanotubes. IEEE International Ultrasonics Symposium, IUS. 2012. pp. 1204-1207
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