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Nanofabrication method paves way for new optical devices
Date:10/5/2007

trates a new type of patterning technique that is cheap, but also one that can produce very high quality optical materials with interesting properties.

For example, if the perforations or holes are patterned into microscale patches, they show dramatically different transmission behavior of light compared to an infinite array of holes. The patches appear to focus light while the infinite arrays do not.

Moreover, their optical transmission can be altered simply by changing the geometry of perforations rather than having to cook a new composition of materials. This feature makes them very attractive in terms of tuning their behavior to a given need with ease. These materials also can be superior as optical sensors, and they open the possibility of ultra-small sources of light. Furthermore, given their precise organization, they can serve as templates for making their own clones or for making other ordered structures at the nanoscale, such as arrays of nanoparticles.

This work is exactly the kind of high-risk, high-potential transformative research NSFs Division of Materials Research is interested in supporting, said Harsh Deepak Chopra, program manager at the National Science Foundation (NSF), which funded the research. The early results are extremely promising and suggest a whole new generation of optical devices.


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Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

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