Recent postsView all

The excitement of discovery
9 Dec 22
Concept-based assessment
13 Nov 22
5+ is different to +5
20 Sep 22
Training students to think criti…
8 Sep 22
Intergalactic-mindedness
15 Jul 22
Some thoughts on the May 2022 IB…
30 May 22
Anti-Markovnikov addition
16 Mar 22
Initial reflections on the new p…
31 Jan 22
Covering the mandatory practical…
26 Nov 21
Greenhouse gas bulletin and COP2…
25 Oct 21
Testing concepts using the H<>
18 Oct 21
“The Strangest Man”
29 Jul 21

Images of chemical bonds

Friday 31 May 2013

Atoms can be ‘seen’ using scanning tunnelling microsopy now for the first time chemical bonds can also be ‘seen’. A team from Berkley University in Califonia have for the first time captured images of chemical bonds rearranging themselves. In a paper published in Science they describe how they have used atomic force microscopy to capture images of carbon atoms in a ring rearranging. This is an advanced form of scanning probe microscopy used to detect individual atoms. It uses a very fine probe to interpret the electrical forces produced by molecules. As the tip of the probe is moved near the surface of a molecule it is deflected by different charges, producing an image of how the atoms and bonds are aligned.  The images (two of which are shown below) which can be seen on the Wired website are startling and revealed some products from the rearrangement which were unexpected.



Comments


To post comments you need to log in. If it is your first time you will need to subscribe.