Frequency modulation of laser ultrasound transducer using carbon nanotube-coated polyethylene microsphere
- Authors
- Kwon, Soo Won; Choi, Won Young; Jo, Hyeong Geun; Park, Kwan Kyu
- Issue Date
- Apr-2020
- Publisher
- ACOUSTICAL SOC AMER AMER INST PHYSICS
- Citation
- JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, v.147, no.4, pp.EL351 - EL356
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
- Volume
- 147
- Number
- 4
- Start Page
- EL351
- End Page
- EL356
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/9908
- DOI
- 10.1121/10.0000952
- ISSN
- 0001-4966
- Abstract
- An ultrasound transducer was fabricated by dropping a multi-walled carbon nanotube solution containing a mixture of carbon nanotubes and ethoxyethanol directly on the surface of polyethylene microspheres. The frequency modulation depended on the diameter of the polyethylene microspheres. To investigate this relationship, three types of polyethylene microspheres with different diameters were used in simulations and experiments. These specimens were attached to polydimethylsiloxane and glass plates. A comparison revealed that the 50 mu m diameter polyethylene spheres coated with carbon nanotubes had the highest ultrasound frequency. This work showed that smaller polyethylene microspheres generate higher ultrasound frequencies.
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