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High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
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Electric Tweezers.

D L Fan1, F Q Zhu2, R C Cammarata3

  • 1Materials Science and Engineering Program, Texas Materials Institute, Center of Nano and Molecular Science and Technology, and Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78759.

Nano Today
|April 17, 2023
PubMed
Summary
This summary is machine-generated.

Electric tweezers precisely manipulate nanowires using electric fields for applications like nanoelectromechanical systems and targeted drug delivery. These tools enable controlled movement, rotation, and assembly of nanoscale components.

Keywords:
MEMSNEMSNanowiresdrug deliverymanipulationnanodevicesnanotubes

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Area of Science:

  • Nanotechnology
  • Biophysics
  • Materials Science

Background:

  • Electric tweezers are devices that use electric fields to manipulate nanoscale objects in liquids.
  • Nanowires, especially those with high aspect ratios, are ideal for manipulation with electric tweezers.
  • The low particle Reynolds number regime (approx. 10-5) characterizes the operating conditions for electric tweezers.

Purpose of the Study:

  • To highlight the capabilities of electric tweezers in manipulating nanowires.
  • To showcase the applications of electric tweezers in fabricating nanoelectromechanical systems (NEMS).
  • To demonstrate the potential of electric tweezers for controlled drug delivery using functionalized nanowires.

Main Methods:

  • Utilizing DC and AC electric fields generated by patterned electrodes.
  • Applying voltages to electrodes to create electric fields for manipulation.
  • Suspending nanoentities, specifically nanowires, in a liquid medium for manipulation.

Main Results:

  • High-precision manipulation of nanowires along prescribed trajectories.
  • Controlled rotation of nanowires, including chirality and angular velocity.
  • Assembly of nanowires to fabricate NEMS devices like nanomotors and nano-oscillators.
  • Transport of drug-carrying functionalized nanowires for targeted drug delivery.

Conclusions:

  • Electric tweezers offer precise control over nanowire manipulation at the nanoscale.
  • Nanowire manipulation via electric tweezers facilitates the creation of advanced NEMS devices.
  • Electric tweezers show promise for sophisticated biomedical applications, including cell-specific drug delivery.