A group of Australian and Chinese scientists working at Australia's Royal Melbourne Institute of Technology (RMIT) has developed what it claims is the "world's thinnest hologram" � almost one thousand times thinner than a human hair.'Min Gu led the study, which created a 'nano-hologram' measuring just 25 nanometers thick. Human hair, by comparison, has a thickness of around 1000 nanometers. The system, which doesn't require 3D glasses, uses a thin film of "topological insulator material" called antimony telluride (Sb2Te3) that's simple to manufacture and reduces the size of holograms. The next step in the process is to develop a rigid film that can be laid over an LCD screen to create the 3D holographic display. This will require the hologram to become ten times smaller than it already is, but could result in the sort of holographic-capable smartphones, TVs, and wearables that were once only seen in sci-fi.