Univesity of Jena Archives | The American Ceramic Society

Univesity of Jena

Smile: Nanocrystals in glass–ceramic dentures provide strength, natural appearance

By / January 10, 2012

Making glass-ceramics at Jena University. Credit: Jan-Peter Kasper, FSU. James Bond fans know well the villain Jaws, a character in The Spy Who Loved Me and Moonraker. Jaws wasn’t concerned about appearance as long as his powerful steel teeth could be sunk into a foe. But, finding strong and natural-appearing materials for artificial teeth for use…

Read More

A material for all weathers (with zero thermal expansion) found in antiperovskite manganese nitrides

By cstanier / September 27, 2011

Mechanism for the occurrence of ZTE. NTEM and PTET denote negative thermal expansion caused by magnetic ordering and positive thermal expansion caused by temperature, respectively, and aM and aT are the corresponding lattice parameters. ΔaM and ΔaT are the changes in the lattice parameter caused by magnetic ordering and temperature, respectively. In the temperature range…

Read More