Photonic Band Gap Materials:  A little history behind Photonic Band Gap materials (PBG)? In 1987, an American physicist and engineer named Eli Yablonovitch and Canadian physics professor from the University of Toronto Canada, Sajeev John constructed artificial structures that then became the concept of PBG material. In order to evaluate this concept they created a 3D prototype diamond lattice in Plexiglas, which is a type of acrylic glass material. With this creation they were able
meta-atoms into a structure creating a metamaterial [1]. Such a metamaterial can have optical properties which can be adapted to a certain requirement. To make a Negative index metamaterial, NIM, the requirement is that the refractive index, n, should be negative. By building certain shapes of meta-atom the permeability, µ, and permittivity, ԑ, of the metamaterial can in theory be chosen. From a construction point of view there are two branches of metamaterials which are 2D and 3D NIMs, and the construction
Brenton Coon Jamie Vilos Info Lit 14 May 2014 METAMATERIALS THE “WAVE” OF THE FUTURE For decades film makers and science fiction authors have toyed with the idea of what technology will look like in the future. Be that tractor beams, space ships, holodecks, transporters and so on. Because of the amazing creativity of minds from the past we benefit from their ideas now in the present. Technologies such as cell phones, blue tooth, head’s up displays, touch screens and even sliding glass doors are
and manipulated in a range of optical gadgets such as telescopes and projectors. Even in areas outside of visual aid and entertainment, optical apparatuses can be used to trick the eye and even showcase 3D images, as seen in holograms. Although metamaterials used in stealth technology lack obvious uses of mirrors, prisms and lenses, knowledge of principles observed in these tools such as reflection and refraction is used in the developing stages. In can then be said that the technology is based on
In Fukuyama’s short writing Transhumanism, he describes his view on what transhumanism is in the modern-day and he describes problems with the current economy, the possible repercussions of a world with transhumans, and possible side-effects of becoming a trans- human. It would not only affect society by having cyborgs and robotic super humans walking around, but he says that there would need to be a massive change in the government and the laws. There would have to be a defining line that stated
Since the beginning of time itself, man has been dreaming of time travel. The current model of physics shows no obvious doubts towards the possibility of time travel, which leaves many questions (“Quantum Time Travel”). If the quarrel for time travel holds any truth, how will man manifest the means of going about it? Before the theories set forth by the men and women in the scientific community can be understood, one must have at least a general knowledge of the basics behind quantum mechanics, as