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Theory of Interacting Dislocations on Cylinders
(American Physical Society, 2013)
We study the mechanics and statistical physics of dislocations interacting on cylinders, motivated by the elongation of rod-shaped bacterial cell walls and cylindrical assemblies of colloidal particles subject to external ...
Perceptual Annotation: Measuring Human Vision to Improve Computer Vision
(Institute of Electrical & Electronics Engineers (IEEE), 2014)
For many problems in computer vision, human learners are considerably better than machines. Humans possess highly accurate internal recognition and learning mechanisms that are not yet understood, and they frequently have ...
Controlling Interneuron Activity in Caenorhabditis Elegans to Evoke Chemotactic Behaviour
(Nature Publishing Group, 2012)
Animals locate and track chemoattractive gradients in the environment to find food. With its small nervous system, Caenorhabditis elegans is a good model system in which to understand how the dynamics of neural activity ...
Trade-offs between drug toxicity and benefit in the multi-antibiotic resistance system underlie optimal growth of E. coli
(BioMed Central, 2012)
Background: Efflux is a widespread mechanism of reversible drug resistance in bacteria that can be triggered by environmental stressors, including many classes of drugs. While such chemicals when used alone are typically ...
Nanometer Patterning with Ice
(American Chemical Society, 2005)
Nanostructures can be patterned with focused electron or ion beams in thin, stable, conformal films of water ice grown on silicon. We use these patterns to reliably fabricate sub-20 nm wide metal lines and exceptionally ...
Atomic Layer Deposition to Fine-Tune the Surface Properties and Diameters of Fabricated Nanopores
(American Chemical Society, 2004)
Atomic layer deposition of alumina enhanced the molecule sensing characteristics of fabricated nanopores by fine-tuning their surface properties, reducing 1/f noise, neutralizing surface charge to favor capture of DNA and ...
Pin-Hole Array Correlation Imaging: Highly Parallel Fluorescence Correlation Spectroscopy
(Elsevier, 2009)
In this work, we describe pin-hole array correlation imaging, a multipoint version of fluorescence correlation spectroscopy, based upon a stationary Nipkow disk and a high-speed electron multiplying charged coupled detector. ...
Plasmid Segregation: Is a Total Understanding Within Reach?
(Elsevier, 2008)
Recent in vitro and in vivo studies of the proteins responsible for the active partitioning of bacterial plasmids suggest that it will be possible to develop a quantitative, molecular understanding of this form of DNA segregation.
Embedding a Carbon Nanotube across the Diameter of a Solid State Nanopore
(American Vacuum Society, 2011)
A fabrication method for positioning and embedding a single-walled carbon nanotube (SWNT) across the diameter of a solid state nanopore is presented. Chemical vapor deposition (CVD) is used to grow SWNTs over arrays of ...
Nanopatterning on Nonplanar and Fragile Substrates with Ice Resists
(American Chemical Society, 2012)
Electron beam (e-beam) lithography using polymer resists is an important technology that provides the spatial resolution needed for nanodevice fabrication. But it is often desirable to pattern nonplanar structures on which ...