Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
Nano Lett. 2017 Jun 14;17(6):3641-3645. doi: 10.1021/acs.nanolett.7b00807. Epub 2017 May 10.
We demonstrate reconfigurable phase-only computer-generated metasurface holograms with up to three image planes operating in the visible regime fabricated with gold nanorods on a stretchable polydimethylsiloxane substrate. Stretching the substrate enlarges the hologram image and changes the location of the image plane. Upon stretching, these devices can switch the displayed holographic image between multiple distinct images. This work opens up the possibilities for stretchable metasurface holograms as flat devices for dynamically reconfigurable optical communication and display. It also confirms that metasurfaces on stretchable substrates can serve as platform for a variety of reconfigurable optical devices.
我们展示了具有三个图像平面的可重构纯相位计算机生成的元表面全息图，该全息图在可拉伸聚二甲基硅氧烷基底上使用金纳米棒在可见光谱范围内工作。拉伸基底会放大全息图图像并改变图像平面的位置。在拉伸的同时，这些器件可以在多个不同的图像之间切换显示的全息图像。这项工作为可拉伸元表面全息图作为用于动态可重构光通信和显示的平面设备开辟了可能性。它还证实了在可拉伸基底上的元表面可以作为各种可重构光学器件的平台。
