PDClipart.org - Public Domain Clip Art Clip Art - Free Clip Art of Everything - Holiday Clip Art - Clip Art Index - All Clip Art - Web Clip Art - Clipart - CometBird FreePSD.com Split-ring resonator - negative index of refraction (meta-)materials A resonator A single cell SRR has a pair of enclosed loops with splits in them at opposite ends. The loops are made of nonmagnetic metal like copper and have a small gap between them. Background[edit] Split ring resonators (SRRs) consist of a pair of concentric metallic rings, etched on a dielectric substrate, with slits etched on opposite sides. The split ring resonator was a microstructure design featured in the paper by Pendry et al in 1999 called, "Magnetism from Conductors and Enhanced Nonlinear Phenomena".[11] It proposed that the split ring resonator design, built out of nonmagnetic material, could enhance the magnetic activity unseen in natural materials. field parallel to the cylinders, the effective permeability can be written as the following. Where is the resistance of the cylinder surface per unit area, a is the spacing of the cylinders, is the angular frequency, is the permeability of free space and r is the radius. where c is the thickness of the c-shaped sheet and
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More Good News About The 'Scientific Accident That May Change The World' Graphene supercapacitors | Photo: UCLA That battery life video that had gone viral due to a recent post on UpWorthy (and which we told you about Tuesday) now has an update. We told you that researchers at Ric Kaner's lab at UCLA had found a way to make a non-toxic, highly efficient energy storage medium out of pure carbon using absurdly simple technology. Today, we can report that the same team may well have found a way to make that process scale up to mass-production levels. The recap: Graphene, a very simple carbon polymer, can be used as the basic component of a "supercapacitor" -- an electrical power storage device that charges far more rapidly than chemical batteries. English translation: He painted a DVD with a liquid carbon solution and stuck it into a standard-issue DVD burner. The result: Absurdly cheap graphene sheets one atom thick, which held a surprising amount of charge without further modification.
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