Home > News > New material may be step towards 3D invisibility cloak
May 14th, 2008
New material may be step towards 3D invisibility cloak
Abstract:
A California nanotechnology research lab says it has created the first 3D material able to bend light in the opposite direction to natural materials. But some other specialists in the field remain sceptical about the claim.
Physicists have in recent years made it possible to bend, or refract, light in the opposite direction to any natural materials. These metamaterials make it possible to create invisibility cloaks that hide an object by steering light around it.
The refractive index of a material is a measure of how it bends light and for natural materials it is always positive. Metamaterials, though, can have negative refractive indexes.
This is achieved with tiny periodic structures that interact with the electric and magnetic fields that comprise light. The repeating structures need to be smaller than the light waves themselves, something that has limited them to long-wavelength light, or microwaves.
Source:
technology.newscientist.com
Related News Press |
News and information
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Discoveries
Chemical reactions can scramble quantum information as well as black holes April 5th, 2024
New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
Announcements
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Military
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
What heat can tell us about battery chemistry: using the Peltier effect to study lithium-ion cells March 8th, 2024
New chip opens door to AI computing at light speed February 16th, 2024
Human Interest/Art
Drawing data in nanometer scale September 30th, 2022
Scientists prepare for the world’s smallest race: Nanocar Race II March 18th, 2022
Graphene nanotubes revolutionize touch screen use for prosthetic hands August 3rd, 2021
JEOL Announces 2020 Microscopy Image Grand Prize Winners January 7th, 2021
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||