THIN FILMS FOR ENERGY EFFICIENT TRANSPARENT ELECTROMAGNETIC SHIELDS
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United States of America Patent
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Issued Date -
May 9, 2013
app pub date -
Jul 12, 2011
filing date -
Jul 12, 2010
priority date (Note) -
Abandoned
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Abstract
Multifunctional, radio frequency shielding, transparent in the visible and energy saving film, including an asymmetric and aperiodic superposition of three dielectric or semiconductor (D) layers alternated to two metal (M) nanometric layers, wherein the ratio of the thickness of the outermost metal layer to the inner one is between 1.4 and 1.7. Such a film can be applied on a transparent substrate to make a frequency selective screen having solar absorbance (Ae) always lower than 17% and one of the following combination of performances:
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