Abstract
Holograms record and display realistic images that appear to float over a surface. One challenge has been how to get those images to move. Now, researchers have created a material that can display different two-dimensional holographic images as the material is stretched (Nano Lett. 2017, DOI: 10.1021/acs.nanolett.7b00807). The technology takes a step toward animated holography, the researchers say. Typical holograms are made from materials such as photopolymers that form cross-links when exposed to light. Once the cross-links are made in the materials, the resulting hologram image is fixed, says Ritesh Agarwal, a materials scientist at the University of Pennsylvania. Agarwal and his colleagues created their stretchy hologram out of a so-called metasurface: a thin film that contains nanostructures designed to shape and reflect light. Their metasurface consisted of a square of polydimethylsiloxane (PDMS) embedded with precisely placed gold nanorods. To make the new holograms, Agarwal and his team first calc...
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call