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首页> 外文期刊>Advanced Functional Materials >Carbon-Nanotube-PDMS Composite Coatings on Optical Fibers for All-Optical Ultrasound Imaging
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Carbon-Nanotube-PDMS Composite Coatings on Optical Fibers for All-Optical Ultrasound Imaging

机译：光纤上的碳-纳米管-PDMS复合涂层，用于全光超声成像

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摘要

Polymer-carbon nanotube composite coatings have properties that are desirable for a wide range of applications. However, fabrication of these coatings onto submillimeter structures with the efficient use of nanotubes has been challenging. Polydimethylsiloxane (PDMS)-carbon nanotube composite coatings are of particular interest for optical ultrasound transmission, which shows promise for biomedical imaging and therapeutic applications. In this study, methods for fabricating composite coatings comprising PDMS and multiwalled carbon nanotubes (MWCNTs) with submicrometer thickness are developed and used to coat the distal ends of optical fibers. These methods include creating a MWCNT organogel using two solvents, dip coating of this organogel, and subsequent overcoating with PDMS. These coated fibers are used as all-optical ultrasound transmitters that achieve high ultrasound pressures (up to 21.5 MPa peak-to-peak) and broad frequency bandwidths (up to 39.8 MHz). Their clinical potential is demonstrated with all-optical pulse-echo ultrasound imaging of an aorta. The fabrication methods in this paper allow for the creation of thin, uniform carbon nanotube composites on miniature or temperature-sensitive surfaces, to enable a wide range of advanced sensing capabilities.
机译：聚合物-碳纳米管复合涂层具有广泛应用所需的性能。然而，利用纳米管的有效利用将这些涂层制造到亚毫米结构上是具有挑战性的。聚二甲基硅氧烷（PDMS）-碳纳米管复合涂层特别适合光学超声传输，这显示出对生物医学成像和治疗应用的希望。在这项研究中，开发了用于制造包含PDMS和亚微米厚度的多壁碳纳米管（MWCNT）的复合涂层的方法，并将其用于涂覆光纤的远端。这些方法包括使用两种溶剂创建MWCNT有机凝胶，对该有机凝胶进行浸涂以及随后用PDMS进行复涂。这些涂层光纤用作全光学超声发射器，可实现高超声压力（最高峰峰值21.5 MPa）和宽频带（最高39.8 MHz）。通过主动脉全光脉冲回波超声成像证明了其临床潜力。本文中的制造方法允许在微型或对温度敏感的表面上创建薄而均匀的碳纳米管复合材料，以实现多种先进的传感功能。

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  • 来源
    《Advanced Functional Materials》 |2016年第46期|8390-8396|共7页
  • 作者

    Noimark Sacha; Colchester Richard J.; Blackburn Ben J.; Zhang Edward Z.; Alles Erwin J.; Ourselin Sebastien; Beard Paul C.; Papakonstantinou Ioannis; Parkin Ivan P.; Desjardins Adrien E.;

  • 作者单位

    UCL, Dept Med Phys & Biomed Engn, Gower St, London WC1E 6BT, England|UCL, Dept Chem, Mat Chem Res Ctr, 20 Gordon St, London WC1H 0AJ, England;

    UCL, Dept Med Phys & Biomed Engn, Gower St, London WC1E 6BT, England;

    UCL, Dept Chem, Mat Chem Res Ctr, 20 Gordon St, London WC1H 0AJ, England;

    UCL, Dept Med Phys & Biomed Engn, Gower St, London WC1E 6BT, England;

    UCL, Dept Med Phys & Biomed Engn, Gower St, London WC1E 6BT, England;

    UCL, Ctr Med Imaging Comp, Gower St, London WC1E 6BT, England;

    UCL, Dept Med Phys & Biomed Engn, Gower St, London WC1E 6BT, England;

    UCL, Dept Elect & Elect Engn, Gower St, London WC1E 6BT, England;

    UCL, Dept Chem, Mat Chem Res Ctr, 20 Gordon St, London WC1H 0AJ, England;

    UCL, Dept Med Phys & Biomed Engn, Gower St, London WC1E 6BT, England;

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