On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips

Craig D. Shultz; Michael A. Peshkin; J. Edward Colgate

doi:10.1109/HAPTICS.2018.8357168

On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips

Craig D. Shultz, Michael A. Peshkin, J. Edward Colgate

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

30 Scopus citations

Abstract

We report on the characterization of two variable friction electroadhesive displays using careful electrical and electrochemical impedance measurements. We qualitatively and quantitatively examine the properties of the skin, body, surface coating, and various electrode interface impedances in isolation using different contact interface conditions and measurement types. A lumped series impedance model explains how all impedances are related during normal usage, and the linearity of this model is shown to be valid under certain assumptions, such as high applied frequencies or small applied currents. Speculation as to the physical mechanisms underlying each impedance element is also given. This analysis unambiguously verifies the existence of a previously hypothesized key electrical system parameter: the sliding interfacial impedance (or air gap impedance). This parameter represents the large increase (100-1000 percent) in overall electrical impedance observed when a finger is sliding versus when it is stationary. It is concluded that this impedance increase cannot be explained by other measured electrical impedance elements in the system and that it vanishes again when the finger comes to rest.

Original language	English (US)
Title of host publication	IEEE Haptics Symposium, HAPTICS 2018 - Proceedings
Editors	Yon Visell, Katherine J. Kuchenbecker, Gregory J. Gerling
Publisher	IEEE Computer Society
Pages	151-157
Number of pages	7
ISBN (Electronic)	9781538654248
DOIs	https://doi.org/10.1109/HAPTICS.2018.8357168
State	Published - May 9 2018
Event	2018 IEEE Haptics Symposium, HAPTICS 2018 - San Francisco, United States Duration: Mar 25 2018 → Mar 28 2018

Publication series

Name	IEEE Haptics Symposium, HAPTICS
Volume	2018-March
ISSN (Print)	2324-7347
ISSN (Electronic)	2324-7355

Other

Other	2018 IEEE Haptics Symposium, HAPTICS 2018
Country/Territory	United States
City	San Francisco
Period	3/25/18 → 3/28/18

Funding

This material is based upon work supported by the National Science Foundation grant number IIS-1518602. Thanks to Oerlikon Balzers Coating USA, Inc. for the DLC coating, and Philip Chehade for processing the 3M discs. ACKNOWLEDGEMENT This material is based upon work supported by the National Science Foundation grant number IIS-1518602. Thanks to Oerlikon Balzers Coating USA, Inc. for the DLC coating, and Philip Chehade for processing the 3M discs.

ASJC Scopus subject areas

Artificial Intelligence
Human-Computer Interaction

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10.1109/HAPTICS.2018.8357168

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Shultz, C. D., Peshkin, M. A., & Colgate, J. E. (2018). On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips. In Y. Visell, K. J. Kuchenbecker, & G. J. Gerling (Eds.), IEEE Haptics Symposium, HAPTICS 2018 - Proceedings (pp. 151-157). (IEEE Haptics Symposium, HAPTICS; Vol. 2018-March). IEEE Computer Society. https://doi.org/10.1109/HAPTICS.2018.8357168

Shultz, Craig D. ; Peshkin, Michael A. ; Colgate, J. Edward. / On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips. IEEE Haptics Symposium, HAPTICS 2018 - Proceedings. editor / Yon Visell ; Katherine J. Kuchenbecker ; Gregory J. Gerling. IEEE Computer Society, 2018. pp. 151-157 (IEEE Haptics Symposium, HAPTICS).

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abstract = "We report on the characterization of two variable friction electroadhesive displays using careful electrical and electrochemical impedance measurements. We qualitatively and quantitatively examine the properties of the skin, body, surface coating, and various electrode interface impedances in isolation using different contact interface conditions and measurement types. A lumped series impedance model explains how all impedances are related during normal usage, and the linearity of this model is shown to be valid under certain assumptions, such as high applied frequencies or small applied currents. Speculation as to the physical mechanisms underlying each impedance element is also given. This analysis unambiguously verifies the existence of a previously hypothesized key electrical system parameter: the sliding interfacial impedance (or air gap impedance). This parameter represents the large increase (100-1000 percent) in overall electrical impedance observed when a finger is sliding versus when it is stationary. It is concluded that this impedance increase cannot be explained by other measured electrical impedance elements in the system and that it vanishes again when the finger comes to rest.",

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Shultz, CD, Peshkin, MA & Colgate, JE 2018, On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips. in Y Visell, KJ Kuchenbecker & GJ Gerling (eds), IEEE Haptics Symposium, HAPTICS 2018 - Proceedings. IEEE Haptics Symposium, HAPTICS, vol. 2018-March, IEEE Computer Society, pp. 151-157, 2018 IEEE Haptics Symposium, HAPTICS 2018, San Francisco, United States, 3/25/18. https://doi.org/10.1109/HAPTICS.2018.8357168

On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips. / Shultz, Craig D.; Peshkin, Michael A.; Colgate, J. Edward.
IEEE Haptics Symposium, HAPTICS 2018 - Proceedings. ed. / Yon Visell; Katherine J. Kuchenbecker; Gregory J. Gerling. IEEE Computer Society, 2018. p. 151-157 (IEEE Haptics Symposium, HAPTICS; Vol. 2018-March).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - We report on the characterization of two variable friction electroadhesive displays using careful electrical and electrochemical impedance measurements. We qualitatively and quantitatively examine the properties of the skin, body, surface coating, and various electrode interface impedances in isolation using different contact interface conditions and measurement types. A lumped series impedance model explains how all impedances are related during normal usage, and the linearity of this model is shown to be valid under certain assumptions, such as high applied frequencies or small applied currents. Speculation as to the physical mechanisms underlying each impedance element is also given. This analysis unambiguously verifies the existence of a previously hypothesized key electrical system parameter: the sliding interfacial impedance (or air gap impedance). This parameter represents the large increase (100-1000 percent) in overall electrical impedance observed when a finger is sliding versus when it is stationary. It is concluded that this impedance increase cannot be explained by other measured electrical impedance elements in the system and that it vanishes again when the finger comes to rest.

AB - We report on the characterization of two variable friction electroadhesive displays using careful electrical and electrochemical impedance measurements. We qualitatively and quantitatively examine the properties of the skin, body, surface coating, and various electrode interface impedances in isolation using different contact interface conditions and measurement types. A lumped series impedance model explains how all impedances are related during normal usage, and the linearity of this model is shown to be valid under certain assumptions, such as high applied frequencies or small applied currents. Speculation as to the physical mechanisms underlying each impedance element is also given. This analysis unambiguously verifies the existence of a previously hypothesized key electrical system parameter: the sliding interfacial impedance (or air gap impedance). This parameter represents the large increase (100-1000 percent) in overall electrical impedance observed when a finger is sliding versus when it is stationary. It is concluded that this impedance increase cannot be explained by other measured electrical impedance elements in the system and that it vanishes again when the finger comes to rest.

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Shultz CD, Peshkin MA , Colgate JE. On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips. In Visell Y, Kuchenbecker KJ, Gerling GJ, editors, IEEE Haptics Symposium, HAPTICS 2018 - Proceedings. IEEE Computer Society. 2018. p. 151-157. (IEEE Haptics Symposium, HAPTICS). doi: 10.1109/HAPTICS.2018.8357168

On the electrical characterization of electroadhesive displays and the prominent interfacial gap impedance associated with sliding fingertips

Abstract

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ASJC Scopus subject areas

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