Search Menu
Photonics Media Photonics Marketplace Photonics Spectra BioPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

Solid-State UV Lamp Presents Sterilization Alternative

Facebook Twitter LinkedIn Email
A new solid-state UV lamp could provide a cheaper and safer option for surface sterilization.

Developed by a team from the Nagoya Institute of Technology, the lamp is said to achieve the shortest light wavelengths ever recorded for a solid-state phosphor lamp, 140 to 220 nm. This is called the vacuum range because light of that frequency propagates in a vacuum, but is quickly absorbed by oxygen in the air.

Used over short ranges in air, vacuum UV light generates highly reactive oxygen radicals that can completely destroy microbes contaminating a surface. This makes the new lamp suitable for sterilizing medical devices, cleaning semiconductor substrates and other industrial applications, researchers said.

A diagram of the solid-state UV lamp. Courtesy of AIP Publishing.

“Our lamp is a promising light source in terms of lifetime, size, heat conduction and stability,” said Shingo Ono of the Nagoya Institute of Technology. “[It] has the potential to be an excellent alternate light source to low-pressure mercury lamps, excimer lamps and deuterium lamps.”

The new lamp avoids use of toxic gases and expensive rare earth elements. It was fabricated using pulsed laser deposition of a thin film of KMgF3 on a MgF2 substrate. It also employs carbon nanofibers as a field emitter.

The work is published in APL-Materials (doi: 10.1063/1.4871915).
Apr 2014
deuterium lampsindustriallight sourcesMgF2sterilizationTech PulseTechnology NewsNagoya Institute of TechnologyShingo OnoKMgF3low-pressure mercury lampsexcimer lamps

Submit a Feature Article Submit a Press Release
Terms & Conditions Privacy Policy About Us Contact Us
Facebook Twitter Instagram LinkedIn YouTube RSS
©2023 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.