IEEE Trans Haptics. 2022 Jan-Mar;15(1):188-199. doi: 10.1109/TOH.2021.3110722. Epub 2022 Mar 18.
Ultrasound mid-air haptics has received much attention from both academic and industrial groups, however, such investigations have almost exclusively focused on the tactile stimulation of glabrous (hairless) skin of our hands. Meanwhile, the non-glabrous (hairy) part of the skin covers the largest area of our body, yet remains largely untouched and unexplored by this haptic technology. 1) We study acoustic streaming and the 2) acoustic radiation force associated with a mid-air haptic stimulus. 3) We characterise the perceived strength, temperature, and definition of the stimulus through a user study. 4) Finally, in a second user study we explore the possibility of conveying affective (pleasant) touch. These objective and subjective experiments provide the first deep understanding of how mid-air haptics can affect tactile perception through stimulating the hairy skin. To that end, we discuss how researchers and haptic designers can leverage mid-air haptic technology to vary the perceived touch intensity, temperature, and deliver affective touch.
超声空气触觉受到了学术界和工业界的广泛关注，但这些研究几乎都集中在手的光滑（无毛）皮肤的触觉刺激上。而皮肤的非光滑（多毛）部分覆盖了我们身体的最大面积，但仍然很大程度上没有被这种触觉技术触及和探索。我们研究了与空气触觉刺激相关的射流和声辐射力。我们通过用户研究来描述感知到的刺激的强度、温度和清晰度。最后，在第二项用户研究中，我们探索了传递情感（愉悦）触摸的可能性。这些客观和主观的实验提供了对空气触觉如何通过刺激多毛皮肤来影响触觉感知的深入理解。为此，我们讨论了研究人员和触觉设计师如何利用空气触觉技术来改变感知到的触摸强度、温度，并传递情感触摸。
