A volumetric display for visual, tactile and audio presentation using acoustic trapping
A volumetric display for visual, tactile and audio presentation using acoustic trapping
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DOI：
10.1038/s41586-019-1739-5
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发表时间：
2019-11-14
期刊：
影响因子：
64.8
通讯作者：
Subramanian, Sriram
中科院分区：
文献类型：
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作者：
Hirayama, Ryuji;Plasencia, Diego Martinez;Subramanian, Sriram
科幻电影描绘了不仅提供视觉而且还提供触觉和听觉三维(3D)内容的体积系统。基于扫描体积表面(1，2)、全息照相术(3)、光学光电(4)、等离子体(5)或透镜(6)的显示器可以创建3D视觉内容，而不需要眼镜或额外的仪器。然而，它们速度慢，视觉持续性能力有限，最重要的是，它们依赖的操作原则无法同时产生触觉和听觉内容。在这里，我们介绍了多模式声学陷阱显示(MATD)：一种悬浮体积显示，可以同时提供视觉、听觉和触觉内容，使用声导入法作为单一操作原理。我们的系统从声学上捕捉粒子，并用红、绿和蓝光照明它，以控制它的颜色，因为它快速扫描显示体积。MATD使用带有二次陷波的时分复用、幅度调制和最小化相位，可同时提供听觉和触觉内容。该系统展示了垂直方向和水平方向的粒子速度分别高达8.75米每秒和3.75米每秒，提供了优于迄今展示的其他光学或声学方法的粒子操纵能力。此外，我们的技术提供了非接触、高速操纵物质的机会，应用于计算制造(7)和生物医学(8)。
Science-fiction movies portray volumetric systems that provide not only visual but also tactile and audible three-dimensional (3D) content. Displays based on swept-volume surfaces(1,2), holography(3), optophoretics(4), plasmonics(5) or lenticular lenslets(6) can create 3D visual content without the need for glasses or additional instrumentation. However, they are slow, have limited persistence-of-vision capabilities and, most importantly, rely on operating principles that cannot produce tactile and auditive content as well. Here we present the multimodal acoustic trap display (MATD): a levitating volumetric display that can simultaneously deliver visual, auditory and tactile content, using acoustophoresis as the single operating principle. Our system traps a particle acoustically and illuminates it with red, green and blue light to control its colour as it quickly scans the display volume. Using time multiplexing with a secondary trap, amplitude modulation and phase minimization, the MATD delivers simultaneous auditive and tactile content. The system demonstrates particle speeds of up to 8.75 metres per second and 3.75 metres per second in the vertical and horizontal directions, respectively, offering particle manipulation capabilities superior to those of other optical or acoustic approaches demonstrated until now. In addition, our technique offers opportunities for non-contact, high-speed manipulation of matter, with applications in computational fabrication(7) and biomedicine(8).