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Rod-based Fabrication of Customizable Soft Robotic Pneumatic Gripper Devices for Delicate Tissue Manipulation
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Pick-and-place using chemically actuated microgrippers.

Jatinder S Randhawa1, Timothy G Leong, Noy Bassik

  • 1Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Journal of the American Chemical Society
|December 5, 2008
PubMed
Summary
This summary is machine-generated.

Chemically triggered micro-grippers offer a novel method for manipulating micro-objects without external power. These reversible tools utilize chemical reactions for precise micro-object handling, paving the way for new micro-systems.

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Area of Science:

  • Materials Science
  • Microtechnology
  • Chemical Engineering

Background:

  • Micro-object manipulation is crucial for various scientific and industrial applications.
  • Existing micro-manipulation systems often rely on complex electrical actuation (Micro Electro-Mechanical Systems).
  • There is a need for simpler, power-independent micro-manipulation tools.

Purpose of the Study:

  • To demonstrate a novel concept of single-use, chemically triggered, reversible micro-grippers.
  • To explore the use of chemical stimuli for actuating micro-scale tools.
  • To lay the foundation for Micro Chemo-Mechanical Systems (MCMS).

Main Methods:

  • Development of mobile grippers with trilayer joints sensitive to chemical changes.
  • Utilizing acetic acid (CH(3)COOH) to trigger gripper closure.
  • Employing hydrogen peroxide (H(2)O(2)) to trigger gripper opening.
  • Modeling gripper actuation using a multilayer thin film approach.

Main Results:

  • Successful demonstration of chemically triggered, reversible micro-gripper operation.
  • Grippers actuated en masse via changes in mechanical properties of trilayer joints.
  • Demonstrated utility in picking and placing 200 micrometer diameter tubes and beads.
  • No external power source required for gripper operation.

Conclusions:

  • Chemically triggered micro-grippers represent a viable alternative to electrically actuated systems.
  • This technology enables the development of functional Micro Chemo-Mechanical Systems (MCMS).
  • The developed micro-grippers offer a new paradigm for micro-object manipulation.