Eco-business / Social Venture

August 24, 2002


Osaka University Explores Nanotechnology to Develop No-Heat Incandescent Light Bulb

Keywords: Eco-business / Social Venture Energy Conservation Environmental Technology University / Research institute 

A research team at Osaka University is trying to use nanotechnology to develop an incandescent light bulb that radiates no heat. They hope to make a prototype by March 2003. A standard incandescent light bulb becomes hot because electromagnetic waves in the infrared range are generated in addition to light in the visible spectrum. By suppressing the infrared radiation, energy can be saved.

By using nanotechnology, the team is trying to develop a filament with a structure that suppresses infrared radiation. The boundary wavelength between visible and infrared spectra is 790 nanometers. The objective of the team is to structurally prevent the existence of infrared radiation by creating minute grooves on the filament surface having a width of 390 nanometers.

Posted: 2002/08/24 05:32:32 AM
Japanese version