New advances in materials science have led to the demonstration of a color holographic display that can depict a scene in another location and be updated in close to real time (refresh rate is once every two seconds). The system known as three-dimensional (3D) telepresence was reported in the journal Nature and holds great promise for applications in the entertainment industry and in telemedicine as well as potentially fulfilling the dreams of a generation of fans of the Star Wars movies and actor Sir Alec Guinness. A photorefractive polymer is used as the recording material and a two-dimensional image is recorded from various angles using 16 Firewire cameras in one location and sent to another using a network connection where it is "printed" with the hologram set-up. The material is a copolymer with a polyacrylic backbone to which are attached pendant tetraphenyldiaminobiphenyl (TPD) and carbaldehyde aniline (CAAN) groups in the ratio 10:1 (TPD/CAAN). Plasticizer, 9-ethyl carbazole (ECZ), lower the glass transition temperature and facilitates chromophore alignment.
3D, color, (almost) live action holograms