mid-air haptics
空中触觉技术。通过超声换能器相控阵在皮肤上方形成局部高声压焦点，从而产生可感知的触觉刺激，用户无需佩戴或握持任何装置。
English Definition
"Contactless haptic technology that delivers tactile sensations onto the user's skin via focused acoustic radiation pressure, typically generated by phased arrays of ultrasound transducers, without requiring the user to wear or hold a device."
用法说明 · 针对中文母语者
在 HCI/VR 文献中常与 ultrasound haptics 互换使用，强调'无接触'这一核心特性。区别于 vibrotactile feedback（接触式振动）和 force feedback（施加力）。
常见错误
- ·易被误译为'中空触觉'，实际指'在空中传递的触觉'
- ·与 controller rumble 等传统触觉混为一谈
真实用例 · 4 条
"We focus on mid-air ultrasound haptics as a promising solution."
"When integrated into VR systems, mid-air ultrasound haptics could deliver tactile expressions of animals, such as fur texture and breathing, while preserving the platform's ease of use"
"the use of mid-air ultrasound haptics requires additional specialized hardware, phased-array ultrasound transducers and a hand-tracking sensor"
"we found that mid-air ultrasound haptics yielded a relaxation effect characterized by a decrease in heart rate together with more positive subjective evaluations."