Monthly Archive for February, 2010
I did some more experiments with lasers the last few days. lasers rock! during the Dynamic Days at Dynamo, Markus has been playing around with some kids and lasers, they are loving it.
Laser microscope viewing a tardigrade from dusjagr on Vimeo.
In addition I was continuing to experiment with the laser micro-projections... By combining a 50mW greenlaser with a lens of webcam i made a ultra simple microscopic projection unit. above the lense i place a sample of tardigrades which cast a projected shadow onto the screen. although there is a large amount of scattering and diffraction, the motion and shape of the tardigrade can clearly be detected. more on hackteria.org.
and I found a cool supplier of "Golden" lasers in china. I bloody need one....
I just tried to get some experience using the DIY microscope to detect fluorescence and nanoparticles. A friend of mine gave me some polymer-based hollow nanoparticles, designed for drug-delivery, dispersible in water and containing fluorescent dies. The fluorescence seems to be easily detectable even by eye when illuminated with an UV-LED. I guess I need to build a dark box around the microscope to test it more in detail or maybe only work at nights....
