University of Lincoln, UK

Engineering Polarons at Metal Oxide surfaces

Matt Watkins recently published a combined experimental / computational study examining polarons near the surface of titanium dioxide in Physical Review Letters.

medium

A novel surface preparation technique, involving nearly 100 sputter/anneal cycles allowed Scanning Tunneling  Microscopy measurements of the polarons at temperatures as low as 4K. At 4K the polarons were frozen in location, in agreement with more recent electronic structure calculations.

It was also possible to manipulate the polarons, indirectly, via microscope induced motion of nearby oxygen ions. This offers the chance to examine these trapped electrons and their interactions in more detail and can have applications in memristor memory devices and photocatalysis.

Categorised in: Science, Updates

Leave a Comment

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Stats

  • 90,711 hits since March 2009
wordpress stat
%d bloggers like this: