Multilayered carbon nanotube yarn based optoacoustic transducer with high energy conversion efficiency for ultrasound application

Zeyu Chen, Yue Wu, Yang Yang, Jiapu Li, Benshuai Xie, Xiangjia Li, Shuang Lei, Jun Ou-Yang, Xiaofei Yang, Qifa Zhou, Benpeng Zhu

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Carbon Nanotube assemblies are currently of considerable interest for their properties of high-packing-density and aligned configurations, which offer a promising route to achieve higher strength and conductivity in macroscopic materials. While most researches have focused on their mechanical and electrical properties, recently, their light absorption and thermal conductivity have attracted more and more attention. This work introduces a novel freestanding optoacoustic transducer using continuous multilayered carbon nanotube yarns, gold nanoparticles and elastomeric polymer, which can be used for efficient conversion from laser energy to acoustic power and generating high acoustic pressure (~33.6 MPa) without focusing. The calculated energy conversion efficiency is as high as 2.74 × 10−2. Such excellent performances could be attributed to its freestanding structure and the enhanced optical absorption due to localized surface plasmon resonance (LSPR) caused by gold nanoparticles. The laser-generated ultrasound has been experimentally demonstrated to be capable of manipulating micro particles (50 µm) in a transparent channel.

Original languageEnglish (US)
Pages (from-to)314-321
Number of pages8
JournalNano Energy
Volume46
DOIs
StatePublished - Apr 2018
Externally publishedYes

Keywords

  • CNT yarn
  • Localized surface plasmon resonance
  • Optoacoustic transducer
  • Particle manipulation

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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