I've posted some sample data files from my SEM, and also the MATLAB/Octave script that I use to convert them into images:
https://drive.google.com/drive/folders/0B4YXWiqYWB99RGJsTjBtR0YxUzg?resourcekey=0-UFjIt_2ezxbcOHFWFLA8cQ&usp=sharing
Let me know if you have any questions.
This is the support structure underneath a single DLP mirror. The width of each mirror is about 10 microns.
Saturday, November 29, 2014
Ben answers your questions #1
I experiment with zinc oxide in a vacuum chamber, and answer your questions from the previous video. If this format is successful, I'll do another Q/A session in the future.
Monday, November 10, 2014
Color-changing Zinc Oxide -- and submit your questions for Ben
Submit your questions for Ben in the comments section for a Q and A session next week.
Heating zinc oxide with a blow torch causes it to turn from a white powder into a golden yellow. The process reverses when the substance cools back down to room temperature. The heat drives out some oxygen from the ZnO lattice, cause some locations to have a Zinc metal ion. This disruption in the lattice is able to absorb more blue and violet light, causing the overall substance to look yellow.
Heating zinc oxide with a blow torch causes it to turn from a white powder into a golden yellow. The process reverses when the substance cools back down to room temperature. The heat drives out some oxygen from the ZnO lattice, cause some locations to have a Zinc metal ion. This disruption in the lattice is able to absorb more blue and violet light, causing the overall substance to look yellow.
Monday, November 3, 2014
How a Crookes radiometer works
A Crookes radiometer is driven by a thermal gas effect, and not "light pressure" as often thought. I demonstrate the radiometer in a vacuum chamber and explain its optimal running pressure.
http://en.wikipedia.org/wiki/Crookes_radiometer
http://en.wikipedia.org/wiki/Crookes_radiometer