Tactile information transmission by apparent movement phenomenon using shape-memory alloy device

Yosuke Mizukami, Hideyuki Sawada

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


This paper introduces the development of a tactile device using a shape-memory alloy and describes the information transmission by the higher psychological perception, such as the phantom sensation and the apparent movement of the tactility. The authors paid attention to the characteristic of a shape-memory alloy formed into a thread, which changes its length according to its body temperature, and developed a vibration-generating actuator electrically driven by periodic signals generated by current control circuits, for the tactile information transmissioa The size of the actuator is quite compact, and the energy consumption is only 20mW. By coupling the actuators as a pair, an information-transmission system was constructed for presenting the apparent movement of the tactility to transmit a quite novel sensation to a user. Based on the preliminary experiment, the parameters for the tactile information transmission were examined. Then the information transmission by the device was tested by 10 subjects and evaluated by questionnaires. The apparent movement was especially well perceived by users as a sensation of a small object running on the skin surface or as being tapped by something, according to the well-determined signals given to the actuators. Several users reported that they perceived a novel rubbing sensation given by the AM, and we further experimented the presentation of the sensation in detail to be used as a sensory-aids tactile display for handicapped and elderly people.

Original languageEnglish
Pages (from-to)277-284
Number of pages8
JournalInternational Journal on Disability and Human Development
Issue number3
Publication statusPublished - 2006 Jan 1
Externally publishedYes


  • Japan
  • Tactile sensation
  • apparent movement
  • phantom sensation
  • shape-memory alloy
  • tactile device
  • vibration

ASJC Scopus subject areas

  • Rehabilitation
  • Sensory Systems
  • Geriatrics and Gerontology
  • Psychiatry and Mental health
  • Advanced and Specialised Nursing
  • Speech and Hearing


Dive into the research topics of 'Tactile information transmission by apparent movement phenomenon using shape-memory alloy device'. Together they form a unique fingerprint.

Cite this