Scanning tunneling microscopy

May 9th, 2012

The instrument that we will use is the Nanosurf EasyScan STM.

There is a nice virtual-reality presentation of how this device works at the University of Virginia. For reading about quantum tunneling in general and about scanning tunneling microscopy in paricular, there are plenty of resources on the web. A one-page description in Swedish is here.

I set up the instrument, connected the computer, upgraded to the current software and firmware, and checked if the electronics is working. But this was with an ancient tip, so no interesting results. First thing you will have to do in the lab is to cut a new tip for getting atomic resolution.

Our neutron results

April 15th, 2012

This report is not anything I could brag with, but I feel strongly the pressure to move on to other tasks in this course. I presume there are some things deeply  needed to be corrected. Anyway, the report on neutron activation for indium and cross section area for cadmium is here, and appendix for the printouts is here. Should we have written in English?

Our results

April 13th, 2012

Our results for the neutron source are posted

 

Any experimental results?

April 9th, 2012

Come on guys, some results please.

Chat on Tuesday evening

April 2nd, 2012

Last weekend the distance students did the neutron-activation experiment, and they also measured electron spin resonance. Tomorrow evening at 21:00 we will meet on Adobe connect for further planning etcetera.