2021 Fiscal Year Final Research Report
Tactile reproduction of three-dimensional shapes by tactile display using electrovibration and electrical stimuli
| Project/Area Number |
20K14694
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 20020:Robotics and intelligent system-related
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Keywords | 触覚 / Haptics / 電気刺激 / 静電刺激 / MEMS |
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| Outline of Final Research Achievements |
In this study, we focus on electrical and electrovibration stimulation, which can be implemented only by electrodes, and fabricate a tactile display with electrodes arranged at a density of 1 mm. We aim to stimulate Merkel's tactile disc and Meissner's body in the shallow part of the skin by electrical stimulation and Pachini's body in the deep part of the skin by vibrating the skin by electrovibration stimulation, respectively. The device is expected to be compact because it requires only an electrode and a power supply. We attempted to reproduce three-dimensional shapes such as bumps using this tactile display, and found that it could reproduce a convex shape of 0.5 mm at the maximum, with a subjective reproducibility of about 60%.
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| Free Research Field |
ヒューマンインタフェース
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で作製した触覚ディスプレイは電気刺激と静電刺激のために電極のみを必要とすることから小型化が容易であり，例えばITOのような透明な導電性材料を用いることでタッチパネル上にも実装が可能である．本研究を通じて明らかにした凸形状の再現は，タッチパネル上での触感再現の範囲を示す上で有意義な結果である．特にVCMやリニアアクチュエータのような大型のアクチュエータを用いずとも平坦なタッチパネル上に凸形状を再現できるということは，タッチパネルを通じた触感提示やインタラクションの範囲を広げることに繋がると期待できる．今後，刺激の条件を詳細に検討することで，より大きい形状の再現についても検討を進めていく．
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