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Actuating compact wearable augmented reality devices by multifunctional artificial muscle

Author

Listed:
  • Dongjin Kim

    (Ajou University)

  • Baekgyeom Kim

    (Ajou University)

  • Bongsu Shin

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung Electronics)

  • Dongwook Shin

    (Ajou University)

  • Chang-Kun Lee

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung Electronics)

  • Jae-Seung Chung

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung Electronics)

  • Juwon Seo

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung Electronics)

  • Yun-Tae Kim

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung Electronics)

  • Geeyoung Sung

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung Electronics)

  • Wontaek Seo

    (Samsung Advanced Institute of Technology, Samsung Electronics)

  • Sunil Kim

    (Samsung Advanced Institute of Technology, Samsung Electronics)

  • Sunghoon Hong

    (Samsung Advanced Institute of Technology, Samsung Electronics)

  • Sungwoo Hwang

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Samsung SDS)

  • Seungyong Han

    (Ajou University)

  • Daeshik Kang

    (Ajou University)

  • Hong-Seok Lee

    (Samsung Advanced Institute of Technology, Samsung Electronics
    Department of Electrical and Computer Engineering, Seoul National University)

  • Je-Sung Koh

    (Ajou University)

Abstract

An artificial muscle actuator resolves practical engineering problems in compact wearable devices, which are limited to conventional actuators such as electromagnetic actuators. Abstracting the fundamental advantages of an artificial muscle actuator provides a small-scale, high-power actuating system with a sensing capability for developing varifocal augmented reality glasses and naturally fit haptic gloves. Here, we design a shape memory alloy-based lightweight and high-power artificial muscle actuator, the so-called compliant amplified shape memory alloy actuator. Despite its light weight (0.22 g), the actuator has a high power density of 1.7 kW/kg, an actuation strain of 300% under 80 g of external payload. We show how the actuator enables image depth control and an immersive tactile response in the form of augmented reality glasses and two-way communication haptic gloves whose thin form factor and high power density can hardly be achieved by conventional actuators.

Suggested Citation

  • Dongjin Kim & Baekgyeom Kim & Bongsu Shin & Dongwook Shin & Chang-Kun Lee & Jae-Seung Chung & Juwon Seo & Yun-Tae Kim & Geeyoung Sung & Wontaek Seo & Sunil Kim & Sunghoon Hong & Sungwoo Hwang & Seungy, 2022. "Actuating compact wearable augmented reality devices by multifunctional artificial muscle," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31893-1
    DOI: 10.1038/s41467-022-31893-1
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    References listed on IDEAS

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