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Opto-thermophoretic fiber tweezers.

Abhay Kotnala1, Yuebing Zheng1

  • 1Department of Mechanical Engineering, Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA.

Nanophotonics (Berlin, Germany)
|July 22, 2021
PubMed
Summary

Opto-thermophoretic fiber tweezers (OTFT) enhance nanoparticle manipulation for diverse applications. This versatile platform enables concentration, delivery, and probing, advancing fields like nanomanufacturing and biosensing.

Keywords:
nanoparticle trappingoptical tweezersthermophoresis

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Area of Science:

  • Optics and Photonics
  • Nanotechnology
  • Materials Science

Background:

  • Opto-thermophoretic tweezers offer low-power nanoparticle manipulation for applications in colloidal assembly, nanomanufacturing, life sciences, and nanomedicine.
  • Enhancing the versatility of these tweezers is crucial for broader adoption and advanced applications.

Purpose of the Study:

  • To develop a more versatile nanoparticle manipulation platform by integrating opto-thermophoretic tweezers onto an optical fiber.
  • To demonstrate the capabilities of the novel opto-thermophoretic fiber tweezers (OTFT) for various nanoscale tasks.

Main Methods:

  • Development of opto-thermophoretic fiber tweezers (OTFT) by translating existing opto-thermophoretic tweezer technology onto an optical fiber platform.
  • Experimental demonstration of OTFT functionalities including nanoparticle concentration, single particle delivery (nanopipette), and nanoprobe applications.

Main Results:

  • Successful implementation of opto-thermophoretic tweezers on an optical fiber platform, creating OTFT.
  • Demonstrated OTFT as an effective nanoparticle concentrator.
  • Showcased OTFT's capability as a nanopipette for precise single particle delivery.
  • Validated OTFT's utility as a nanoprobe for nanoscale investigations.

Conclusions:

  • The developed opto-thermophoretic fiber tweezers (OTFT) offer a simple yet versatile platform for nanoparticle manipulation.
  • OTFT's functional versatility is expected to drive its adoption in additive manufacturing, single nanoparticle-cell interactions, and biosensing.
  • This technology advances low-power nanoparticle manipulation, opening new possibilities in nanotechnology and related scientific fields.