News tagged with dielectric

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Sculptured materials allow multiple channel plasmonic sensors

Physics / Optics & Photonics

created Nov 10, 2009 | popularity 5 / 5 (3) | comments 0

(PhysOrg.com) -- Sensors, communications devices and imaging equipment that use a prism and a special form of light -- a surface plasmon-polariton -- may incorporate multiple channels or redundant applications if manufacturers ...


Electroluminescence from Electrolyte-Gated Carbon Nanotube Field-Effect Transistors

Electroluminescence from Electrolyte-Gated Carbon Nanotube Field-Effect Transistors

Nanotechnology / Nanophysics

created Sep 08, 2009 | popularity 5 / 5 (2) | comments 0

Field-effect transistors (FETs) based on single-walled carbon nanotubes (SWNTs) exhibit a range of optoelectronic effects including near-infrared electroluminescence.


The guiding of light: A new metamaterial device steers beams along complex pathways

The guiding of light: A new metamaterial device steers beams along complex pathways

Physics / Optics & Photonics

created Jul 31, 2009 | popularity 4.5 / 5 (18) | comments 8

Using a composite metamaterial to deliver a complex set of instructions to a beam of light, Boston College physicists have created a device to guide electromagnetic waves around objects such as the corner ...


Storing a Lightning Bolt in Glass for Portable Power

Storing a Lightning Bolt in Glass for Portable Power

Physics / Condensed Matter

created May 05, 2009 | popularity 4 / 5 (21) | comments 9

(PhysOrg.com) -- Materials researchers at Penn State University have reported the highest known breakdown strength for a bulk glass ever measured. Breakdown strength, along with dielectric constant, determines ...


Scientists demonstrate effect of confining dielectrics on semiconductor nanowire conductivity

Nanotechnology / Nanophysics

created May 05, 2009 | popularity 4 / 5 (2) | comments 1

Researchers at the Harvard School of Engineering and Applied Sciences (SEAS), in collaboration with researchers from Worcester Polytechnic Institute (WPI), have demonstrated, for the first time, that the activation energy ...


Nano changes rise to macro importance in a key electronics material

Physics / Condensed Matter

created Apr 08, 2009 | popularity 4 / 5 (2) | comments 0

By combining the results of a number of powerful techniques for studying material structure at the nanoscale, a team of researchers from the National Institute of Standards and Technology, working with colleagues in other ...


Nanocups brim with potential: Light-bending metamaterial could lead to superlenses, invisibility cloaks

Nanotechnology / Nanophysics

created Mar 13, 2009 | popularity 4.8 / 5 (13) | comments 2

Researchers at Rice University have created a metamaterial that could light the way toward high-powered optics, ultra-efficient solar cells and even cloaking devices.