Intellectual Property Law

US Patent 7560707 - Plasmonic up-converter

Up-conversion materials provide a conversion from infrared to visible light offering an alternative to cathode ray tubes and LCDs for a lighter display structure. This patent from Hewlett-Packard teaches using surface plasmons formed in a nanostructured surface to increase the efficiency of such materials. Claim 1 reads:

1. A plasmonic up-converter apparatus, comprising:

an excitation source operable to emit electromagnetic radiation at an excitation frequency; and

at least one array of nanofeatures configured to produce an emission spectrum responsive to irradiation with the electromagnetic radiation, the emission spectrum having a number of distinct emission peaks, wherein a first emission peak is associated with a fundamental harmonic frequency, a second emission peak is associated with a second harmonic frequency, and a third emission peak is associated with a third harmonic frequency, the fundamental harmonic frequency approximately equal to the excitation frequency and the second and third harmonic frequencies greater than the fundamental harmonic frequency.

Full post as published by TinytechIP on July 17, 2009 (boomark / email).