Nanotechnology slides

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(1) Image: Sulfate reducing bacteria
Caption: Used as cover on Science, 1 December 2000
Source: Jill Banfield, U. Wisconsin, Madison
Website: http://www.geology.wisc.edu/~jill/tennyson/tennyson.html
NSF Funded: yes

2. Image: Polystyrene Nanoparticles
Caption: Image showing polystyrene nanoparticles dynamically deposited into Poly (dimethylsiloxane) grooves.
Source: Dr. Gilbert Walker, Univ. of Pittsburg
NSF Funded: yes
This research is supported by National Science Foundation grants CHE 98-16820 and PHY 01-03048.

3. Image: Titanium Dioxide Microsphere
Caption: Titanium dioxide microsphere (1-50 microns in diameter) with (approximately) closed-packed spherical inclusions. These can be thought of as small "photonic crystallites," which are expected to scatter light very efficiently.
Source: Sascha Klein, Fred Lange, and David Pine, Univ. of California Santa Barbara

4. Image: Branched electron flow
Caption: Experimental discovery of branching and fringing of electron flow. The fringes are quantum wave interference effects. Scientific illustration (with Scot Shaw): Inspired by the experiments, branch formation is shown to be due to electrons riding over random hills and depressions in the potential landscape that they must negotiate. The branching is an indirect effect of this landscape: branches are not associated simply with valleys in the landscape.Transport II, the first of a series of large format high resolution electron flow images using branched flow physics, revealing the caustics formed when electrons flow from center image. This image was used for the cover of Nature, March 8, 2001 in connection with the publication of the new results. The electron flow patterns are remarkably flexible and organic-a new medium for artistic creation.
Source: Eric Heller

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