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Nanoscale Morphology Control using Ion Beams with Applications in Materials and Life Sciences

Speaker: Michael J. Aziz, Gordon McKay Professor of Materials Science, Harvard
Date & Time: March 30, 2006 - 1:30pm
Location: 260 Chemistry


Nanoscale Morphology Control using Ion Beams with Applications in Materials and Life Sciences
Laboratory for Surface Modification


Michael J. Aziz, Gordon McKay Professor of Materials Science, Harvard
1:30pm, 260 Chemistry

Low energy ion irradiation of a solid surface can be used to control surface morphology on length scales from 1 micron to 1 nanometer. Focused or unfocused ion irradiation induces a spontaneous self-organization of the surface into nanometer-sized ripples, dots, or holes; it also induces diameter increases and decreases in a pre-existing nanopore by a tradeoff between sputter removal of material and stimulated surface mass transport. Experiments will be reviewed that illuminate the kinetics of evolution of the surface morphological instability; the influence of initial and boundary conditions on guiding the self-organization; the development of shock fronts that sharpen features at sufficiently steep angles; and the kinetics governing the fabrication of nanopores for single-biomolecule detectors.

Advancing Nanotechnology - IAMDN New Microscopes

 

Rutgers new scanning transmission electron microscope and new helium ion microscope help researchers develop nanotechnology used to fight cancer, generate power, and create more powerful electronics. Watch the video to learn more.

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