Technologically valuable ultrastable glasses can be produced in days or hours with properties corresponding to those that have been aged for thousands of years, computational and laboratory studies have confirmed.
Diamond has excellent properties for high-power electronic devices. However, mechanical polishing leaves rough diamond surfaces, which diminishes the device performance. Now, researchers have identified the conditions for growing flat diamond films suitable for high-performance devices.
Researchers have created an atomic gas in the laboratory that nonetheless has negative Kelvin values. These negative absolute temperatures have several apparently absurd consequences: although the atoms in the gas attract each other and give rise to a negative pressure, the gas does not collapse - a behaviour that is also postulated for dark energy in cosmology.
Physiker der Universität Würzburg haben Siliziumkarbid-Kristalle so verändert, dass sie neue, überraschende Eigenschaften zeigen. Das macht sie interessant für den Bau leistungsfähiger Computer oder für die Datenübertragung.