Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

  • Photoresist Replicates Transmission Through Nanoholes

Photonics Spectra
Jul 2005
A team of investigators at Indiana University in Bloomington has developed a technique for mapping the 3-D spatial distribution of radiation transmitted through nanoscale apertures in which the transmission is preserved as a polymer replica in a photoresist. The approach, presented in an online edition of Nano Letters on June 4, avoids the problems of methods that employ physical proximity probes, which affect the transmission pattern.

To demonstrate the mapping technique, the scientists fabricated aluminum-coated films with apertures from 110 to 770 nm in diameter by nano-sphere lithography. They coated the films with a 15-µm-thick layer of photoresist and exposed it through holes to 365-nm radiation from a high-pressure mercury lamp, varying the exposure time from 1 to 30 minutes. Postexposure baking and dissolution left free-standing pillars of polymer that replicated the transmission patterns, with pillar heights directly proportional to aperture diameter and exposure time.

The emission and/or propagation of energy through space or through a medium in the form of either waves or corpuscular emission.
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!