30 May 2012 Podcast | Compounds
This week's podcast is about heavy water
The images shows how the atoms in the glass move when they are subjected to shear deformation © Image courtesy of Pinshane Huang, Jonathan Alden, David Muller, Simon Kurasch, Ute Kaiser
While silica glass plays a wide range of roles in modern life, the structure of the amorphous material is still not really understood or how it changes under stress and strain. That could be important for your silicon chip or flexible fibre optic cable so scientists have been interested in learning more about its response to deformation and other insults.
Now, a group led by David Muller of Cornell University has used a probing electron beam to cause rearrangements in silica that they then imaged and captured on video in real time. Essentially they can watch the movements of the atomic building blocks of silica as they move about and adjust. Having proved the technique works, they might be able to see how different external stimuli affect silica and other amorphous materials.
3 December 2013 Research
Innovative electrodes set to put electric cars in the fast lane with a new design that holds double the energy of ordinary li...
29 November 2013 Research
Gadgets that power themselves by harvesting energy from both light and wind are on the horizon