Welcome
Welcome to the wiki for the Minot Research Group. Group members contribute and maintain up-to-date manuals, recipes and information on many common lab questions. (Setting up a wiki is relatively easy.)
Image Gallery
 | Our research group in the academic year 07/08: Ethan, Tristan, Josh, Matt, Caleb, Landon, Daniel, Jörg |
 | Oregon State Beavers' logo scratched on a plastic layer, 7 x 10 μm atomic force microscope image. This is the smallest beaver ever made at OSU, but not the smallest Beaver logo ever made. Dr. Keizler's group in Chemistry holds the “smallest ever” award. They used the ebeam facility in Eugene. |
 | 3 micron scan of proteins coating a silicon oxide substrate. The proteins have been pushed around by the AFM tip to form the OSU logo. The proteins pile up during the writing process, like snow on the side of a ploughed road. The surface roughness corresponds to individual proteins, the individual protein molecules are 4 nanometers tall |
 | 1 micron scan of IgG proteins on top of nanotubes. We are currently investigating how protein binding effects the conductance of nanotubes. This biosensor technology is a promising route to improving medical diagnostics. |
 | Carbon nanotube connected to a metal electrode at V = -3V. Color contrast is a map of the electrostatic forces between the sample and the grounded AFM tip. The gap between the electrodes is 3 μm |
 | 20 micron scan showing 4 nanotubes (1 nm diameter) growing from Ferritin. The nanotube growth direction is controlled by atomic steps (not visible) in the quartz substrate. This growth technique was introduced in 2007 and solves many issues that were limiting high-yeild manufacturing of nanotube devices. |
 | Write you initial where nobody can see! The substrate is a CD. The plastic coating is perfect for doodling with an AFM tip. |
 | 5 micron scan showing a flake of graphene on the left side of the image. Graphene is a sheet of covalently bonded carbon atoms which is one atom thick. Graphene has unique electrical properties such as zero effective electron mass and extremely high room temperature mobility. |
 | Carbon nanotube grown on silicon oxide, 400 x 800 nm AFM scan |
 | Optical microscope (~ 2 mm field of view) showing the electrodes for 50 different nanotube devices. The layout is designed to fit a 1 mm o-ring around all active transistors. |
 | Nanotubes were sprayed onto this glass substrate. In the semi-transparent square, the nanotubes form a mat many nanotubes deep. We collaborate with Dr. Young-Shik Lee (OSU Physics) to study the optical and THz properties such samples. |
 | 4.5 micron AFM image of mycobacterial membranes taken in liquid. The membrane has separated into two phases, the step height between the two phases is approximately 1 nanometer. The image has been colored using the relative energy dissipation of the AFM tip tapping on the softer phase vs. the firmer phase. The sample was prepared by Raghu Parthasarathy's group (Department of Phyiscs, University of Oregon) who study the dehydration resistance of these membranes (2008 article in Biophysical Journal.) |
