Alternative energy: A new way to take a bite of sunlight

October 2, 2006

Flash those pearly whites in a dazzling smile and you showcase a natural light collector mechanism hidden inside the internal structure of dentin - the hard, bone-like material that forms the main part of teeth.

Scientists in Germany are reporting that the photonic crystal structure of dentin was their inspiration to propose a new method for harvesting sunlight to produce electricity.

Andrei P. Sommer and Michael Gente say tooth structure bears similarities to photonic crystals, which allow certain wavelengths to enter their internal structure, but block others. Applications of the effect include harvesting sunlight for photovoltaic cells.

"The light-collector mechanism in dentin could serve as a model for the design of solar concentrator arrays," the researchers write in their paper, published in the current (September/October) edition of the bimonthly ACS journal Energy & Fuels.

"Arrays of tooth-like structures mounted on silicon permit collection of sunlight virtually independent of the angle of incidence of the sun, which could be vital, for instance, in Antarctica."

Source: American Chemical Society

Related Stories

Recommended for you

Team extends the lifetime of atoms using a mirror

October 13, 2015

Researchers at Chalmers University of Technology have succeeded in an experiment where they get an artificial atom to survive ten times longer than normal by positioning the atom in front of a mirror. The findings were recently ...

A particle purely made of nuclear force

October 13, 2015

Scientists at TU Wien (Vienna) have calculated that the meson f0(1710) could be a very special particle – the long-sought-after glueball, a particle composed of pure force.


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.