Acoustophoretic volumetric displays using a fast-moving levitated particle
Acoustophoretic volumetric displays using a fast-moving levitated particle
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DOI：
10.1063/1.5113467
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发表时间：
2019-08-05
影响因子：
4
通讯作者：
Hill, Thomas L.
中科院分区：
文献类型：
--
作者：
Fushimi, Tatsuki;Marzo, Asier;Hill, Thomas L.
展示彻底改变了我们的工作和学习方式，因此，展示技术的发展至关重要。自由空间显示的可能性可以从360度无障碍地观看3D图形，这是研究总体或灯场显示器的活跃领域，可以意识到这样的显示器，但它们却遭受了剪裁和有限的视野。在这里，我们使用阶梯式的超声发射器阵列实现了体积的声学表现，其中使用声学辐射力在空中持有毫米的粒子，并沿3D路径迅速移动。同步，一个光源在每个3D位置都用目标颜色照亮粒子。我们表明，可以以较低的帧速率实时渲染简单的数字（每秒10帧）以及栅格图像。此外，我们探讨了一个梯级阵利悬浮器中快速移动粒子的动力学，并确定图像质量下降的潜在降解来源。动力学是非线性的，并导致显示的图像中的失真，并且这种失真随着绘图速度而增加。创建的声学展示显示了展示技术的未来形式的希望。 AIP Publishing在许可下发布。
Displays have revolutionized the way we work and learn, and thus, the development of display technologies is of paramount importance. The possibility of a free-space display in which 3D graphics can be viewed from 360 degrees without obstructions is an active area of research-holograms or lightfield displays can realize such a display, but they suffer from clipping and a limited field of view. Here, we use a phased array of ultrasonic emitters to realize a volumetric acoustophoretic display in which a millimetric particle is held in midair using acoustic radiation forces and moved rapidly along a 3D path. Synchronously, a light source illuminates the particle with the target color at each 3D position. We show that it is possible to render simple figures in real time (10 frames per second) as well as raster images at a lower frame rate. Additionally, we explore the dynamics of a fast-moving particle inside a phased-array levitator and identify potential sources of degradation in image quality. The dynamics are nonlinear and lead to distortion in the displayed images, and this distortion increases with drawing speed. The created acoustophoretic display shows promise as a future form of display technology. Published under license by AIP Publishing.