Electroadhesion

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Electroadhesion is the electrostatic effect of astriction between two surfaces subjected to an electrical field. Applications include the retention of paper on plotter surfaces, astrictive robotic prehension (electrostatic grippers) etc. Clamping pressures in the range of 0.5 to 1.5 N/cm2 (0.8 to 2.3 psi) have been claimed.[1]

An electroadhesive pad consists of conductive electrodes placed upon a polymer substrate. When alternate positive and negative charges are induced on adjacent electrodes, the resulting electric field sets up opposite charges on the surface that the pad touches, and thus causes electrostatic adhesion between the electrodes and the induced charges in the touched surface material.[2]

Electroadhesion can be loosely divided into two basic forms: that which concerns the prehension of electrically conducting materials where the general laws of capacitance hold (D = E ε) and that used with electrically insulating subjects where the more advanced theory of electrostatics (D = E ε + P) applies.[3]

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Further reading[edit]

  • Monkman. G.J., S. Hesse, R. Steinmann & H. Schunk – Robot Grippers - Wiley, Berlin 2007.
  • Hesse. S, G.J. Monkman, R. Steinmann & H. Schunk - Robotergreifer - Hanser, München 2004.
  • Monkman. G.J,. - 24:1 - Electroadhesive Microgrippers - Assembly Automation - Vol 24, No. 1, pp 326–330 - MCB University Press, October 2003.
  • Monkman. G.J. - Workpiece Retention during Machine Processing - Assembly Automation - Vol 20, issue 4, MCB University Press, 2000.
  • Monkman. G.J. - An analysis of astrictive prehension - International Journal of Robotics Research - Vol 16, No. 1 - February 1997.
  • Monkman. G.J. - Robot Grippers for use with Fibrous Materials - International Journal of Robotics Research - Vol 14, No. 2, pp. 144–151 - April 1995.
  • Monkman. G.J. ‑ Compliant Robotic Devices and Electroadhesion ‑ Robotica ‑ Volume 10, pp. 183‑185, February 1992.
  • Monkman. G.J., P.M. Taylor & G.J. Farnworth ‑ Principles of Electroadhesion in Clothing Technology ‑ International Journal of Clothing Science & Technology, vol 1, No. 3, pp. 14‑20. ‑ MCB University Press, 1989.
  • T. Bamber, J. Guo, et al., Visualization methods for understanding the dynamic electroadhesion phenomenon, J. Phys. D. Appl. Phys. 50 (2017).
  • J. Guo, T. Bamber, et al., Experimental study of relationship between interfacial electroadhesive force and applied voltage for different substrate materials, Appl. Phys. Lett. 110 (2017).
  • J. Guo, T. Bamber, et al., Towards adaptive and intelligent electroadhesives for robotic material handling, IEEE Robot. Autom. Lett. 2 (2017).
  • J. Guo, T. Bamber, et al., Optimization and experimental verification of coplanar interdigital electroadhesives, J. Phys. D. Appl. Phys. 49 (2016).
  • J. Guo, M. Tailor, et al., Investigation of relationship between interfacial electroadhesive force and surface texture, J. Phys. D. Appl. Phys. 49 (2016).

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