Presentation of Various Tactile Sensations Using Micro-Needle Electrotactile Display

Mayuko Tezuka, Norihide Kitamura, Kohei Tanaka, Norihisa Miki

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Tactile displays provoke tactile sensations by artificially stimulating tactile receptors. While many types of tactile displays have been developed, electrotactile displays that exploit electric stimulation can be designed to be thin, light, flexible and thus, wearable. However, the high voltages required to stimulate tactile receptors and limited varieties of possible sensations pose problems. In our previous work, we developed an electrotactile display using a micro-needle electrode array that can drastically reduce the required voltage by penetrating through the high-impedance stratum corneum painlessly, but displaying various tactile sensations was still a challenge. In this work, we demonstrate presentation of tactile sensation of different roughness to the subjects, which is enabled by the arrangement of the electrodes; the needle electrodes are on the fingertip and the ground electrode is on the fingernail. With this arrangement, the display can stimulate the tactile receptors that are located not only in the shallow regions of the finger but also those in the deep regions. It was experimentally revealed that the required voltage was further reduced compared to previous devices and that the roughness presented by the display was controlled by the pulse frequency and the switching time, or the stimulation flow rate. The proposed electrotactile display is readily applicable as a new wearable haptic device for advanced information communication technology.

Original languageEnglish
Article numbere0148410
JournalPLoS One
Volume11
Issue number2
DOIs
Publication statusPublished - 2016 Feb 1

Fingerprint

Touch
Needles
electrodes
Display devices
roughness
receptors
Electrodes
information technology
communications technology
impedance
cornea
Electric potential
Surface roughness
Grounding electrodes
Equipment and Supplies
Nails
Electric Impedance
Cornea
Electric Stimulation
Fingers

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Presentation of Various Tactile Sensations Using Micro-Needle Electrotactile Display. / Tezuka, Mayuko; Kitamura, Norihide; Tanaka, Kohei; Miki, Norihisa.

In: PLoS One, Vol. 11, No. 2, e0148410, 01.02.2016.

Research output: Contribution to journalArticle

Tezuka, Mayuko ; Kitamura, Norihide ; Tanaka, Kohei ; Miki, Norihisa. / Presentation of Various Tactile Sensations Using Micro-Needle Electrotactile Display. In: PLoS One. 2016 ; Vol. 11, No. 2.
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