Dalsgaard Tor-Salve, Bhatia Arpit, Gao Lei, Hirayama Ryuji, Subramanian Sriram, Bergström Joanna, Hornbæk Kasper
Department of Computer Science, University of Copenhagen, Universitetsparken 1, 2100, Copenhagen, Denmark.
Department of Computer Science, University College London, Euston Road 169, London, United Kingdom.
Sci Rep. 2025 Mar 25;15(1):10297. doi: 10.1038/s41598-025-94463-7.
When applied to the skin, chemical stimulants can evoke haptic sensations. However, they need to be applied continuously using paper or pads in fixed locations, limiting their usefulness as a general haptic technology. To overcome these limitations, we introduce an ultrasound-based system for the precise acoustophoresis of droplets of chemical stimulants to the skin. We show that such droplets can indeed produce distinct haptic sensations. In addition, the system can use ultrasound to stimulate the area of the skin where the stimulants have been applied. We show that this increases the perceived intensity. Taken together, these results demonstrate the promise of non-contact delivery and modulation of chemical stimulants, not only as a haptic technology but also to provide deeper insights into the interaction of the chemical and mechanical senses.
当应用于皮肤时，化学刺激物可引发触觉感受。然而，它们需要使用纸张或垫子在固定位置持续施加，这限制了其作为通用触觉技术的实用性。为了克服这些限制，我们引入了一种基于超声的系统，用于将化学刺激物液滴精确地声泳至皮肤。我们证明，这样的液滴确实能产生明显的触觉感受。此外，该系统可以使用超声刺激已施加刺激物的皮肤区域。我们证明，这会增加感知强度。综上所述，这些结果证明了化学刺激物非接触递送和调制的前景，不仅作为一种触觉技术，而且还能为化学和机械感官的相互作用提供更深入的见解。
