Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion
Electroadhesion (EA) is a promising technology with potential applications in robotics, automation, space missions, textiles, tactile displays, and some other fields where efficient and versatile adhesion is required. However, a comprehensive understanding of the physics behind it is lacking due to...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-04-01
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| Series: | Advanced Intelligent Systems |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aisy.202300618 |
| _version_ | 1797197625505611776 |
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| author | Easa AliAbbasi Ørjan Grottem Martinsen Fred‐Johan Pettersen James Edward Colgate Cagatay Basdogan |
| author_facet | Easa AliAbbasi Ørjan Grottem Martinsen Fred‐Johan Pettersen James Edward Colgate Cagatay Basdogan |
| author_sort | Easa AliAbbasi |
| collection | DOAJ |
| description | Electroadhesion (EA) is a promising technology with potential applications in robotics, automation, space missions, textiles, tactile displays, and some other fields where efficient and versatile adhesion is required. However, a comprehensive understanding of the physics behind it is lacking due to the limited development of theoretical models and insufficient experimental data to validate them. This article proposes a new and systematic approach based on electrical impedance measurements to infer the electrostatic forces between two dielectric materials under EA. The proposed approach is applied to tactile displays, where skin and voltage‐induced touchscreen impedances are measured and subtracted from the total impedance to obtain the remaining impedance to estimate the electrostatic forces between the finger and the touchscreen. This approach also marks the first instance of experimental estimation of the average air gap thickness between a human finger and a voltage‐induced capacitive touchscreen. Moreover, the effect of electrode polarization impedance on EA is investigated. Precise measurements of electrical impedances confirm that electrode polarization impedance exists in parallel with the impedance of the air gap, particularly at low frequencies, giving rise to the commonly observed charge leakage phenomenon in EA. |
| first_indexed | 2024-04-24T06:46:56Z |
| format | Article |
| id | doaj.art-bd5ee46b4d9f43afb0c0dbe5712496c8 |
| institution | Directory Open Access Journal |
| issn | 2640-4567 |
| language | English |
| last_indexed | 2024-04-24T06:46:56Z |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Intelligent Systems |
| spelling | doaj.art-bd5ee46b4d9f43afb0c0dbe5712496c82024-04-22T18:07:17ZengWileyAdvanced Intelligent Systems2640-45672024-04-0164n/an/a10.1002/aisy.202300618Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under ElectroadhesionEasa AliAbbasi0Ørjan Grottem Martinsen1Fred‐Johan Pettersen2James Edward Colgate3Cagatay Basdogan4College of Engineering Koc University Istanbul 34450 TurkeyDepartment of Physics University of Oslo Sem Sælands vei 24 0371 Oslo NorwayDepartment of Physics University of Oslo Sem Sælands vei 24 0371 Oslo NorwayDepartment of Mechanical Engineering Northwestern University Evanston IL 60208 USACollege of Engineering Koc University Istanbul 34450 TurkeyElectroadhesion (EA) is a promising technology with potential applications in robotics, automation, space missions, textiles, tactile displays, and some other fields where efficient and versatile adhesion is required. However, a comprehensive understanding of the physics behind it is lacking due to the limited development of theoretical models and insufficient experimental data to validate them. This article proposes a new and systematic approach based on electrical impedance measurements to infer the electrostatic forces between two dielectric materials under EA. The proposed approach is applied to tactile displays, where skin and voltage‐induced touchscreen impedances are measured and subtracted from the total impedance to obtain the remaining impedance to estimate the electrostatic forces between the finger and the touchscreen. This approach also marks the first instance of experimental estimation of the average air gap thickness between a human finger and a voltage‐induced capacitive touchscreen. Moreover, the effect of electrode polarization impedance on EA is investigated. Precise measurements of electrical impedances confirm that electrode polarization impedance exists in parallel with the impedance of the air gap, particularly at low frequencies, giving rise to the commonly observed charge leakage phenomenon in EA.https://doi.org/10.1002/aisy.202300618interfacial air gapbioimpedanceelectrical impedanceelectroadhesionpolarizationrobotics |
| spellingShingle | Easa AliAbbasi Ørjan Grottem Martinsen Fred‐Johan Pettersen James Edward Colgate Cagatay Basdogan Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion Advanced Intelligent Systems interfacial air gap bioimpedance electrical impedance electroadhesion polarization robotics |
| title | Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion |
| title_full | Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion |
| title_fullStr | Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion |
| title_full_unstemmed | Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion |
| title_short | Experimental Estimation of Gap Thickness and Electrostatic Forces Between Contacting Surfaces Under Electroadhesion |
| title_sort | experimental estimation of gap thickness and electrostatic forces between contacting surfaces under electroadhesion |
| topic | interfacial air gap bioimpedance electrical impedance electroadhesion polarization robotics |
| url | https://doi.org/10.1002/aisy.202300618 |
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