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Terahertz invisibility cloak created

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Compiled by Photonics Spectra staff

A new cloaking material can render objects invisible in the terahertz range. While the design does not create an invisibility cloak for the visible spectrum, it could have applications in diagnostics, security and communications. The cloak, created at Northwestern University, uses microfabricated gradient-index materials to manipulate the reflection and refraction of terahertz wavelengths. To render an object invisible, light must be manipulated so that it will neither scatter at an object’s surface nor be absorbed or reflected by it. To manipulate light in the terahertz frequency,...Read full article

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    Published: July 2011
    AmericascancerCheng SunCLEOcloaking materialCommunicationsdata projectordefensediagnosticselectronic transfer microstereolithographyIllinoisindustriallenseslight propagationliquid polymermechanical engineeringmetamaterialsmicrofabricated gradient-index materialsNorthwestern UniversityOpticsPrismsResearch & TechnologysecurityTech Pulseterahertz invisibility cloakterahertz lensterahertz scanner

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