You searched on: Author: jack douglas
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1. Dimensional Reduction of Duplex DNA Under Nanofluidic Slit Confinement
Luis Fernando Vargas Lara, Jack F Douglas, Samuel M Stavis, Elizabeth A Strychalski, Jon C Geist, Brian Joseph Nablo
There has been much recent interest in the dimensional properties of duplex DNA under nanoscale
confinement conditions as a problem of fundamental interest in both technological and
biological fields. This has led to a series of measurements by f ...
2. Confronting the Complexity of Commercial Carbon Nanotube Materials
Luis Fernando Vargas Lara, Jack F Douglas
The morphology of commercially available carbon nanotube materials is often much more complex than the term ,carbon
nanotubeŠ (CNT) would imply. Commercial CNT materials are typically composed of roughly spherical CNT domains having a
highly rami ...
3. Interplay of particle shape and suspension properties: a study of cube-like particles
Debra Jean Audus, Ahmed M. Hassan, Edward Joseph Garboczi, Jack F Douglas
With advances in anisotropic particle synthesis, particle shape is now a feasible parameter for tuning suspension properties. However, there is a need to determine how these newly synthesized particles affect suspension properties and a need to solve ...
4. Critical Examination of the Colloidal Particle Model of Globular Proteins
Prasad Srinivasan Sarangapani, Steven D Hudson, Ronald Leland Jones, Jack F Douglas, Jai Avinash Pathak
Recent studies of globular protein solutions have uniformly adopted a colloidal view of
proteins as particles, a perspective that neglects the polymeric primary structure of these
biological macromolecules, their intrinsic flexibility and their abi ...
5. High-speed, high-purity separation of gold nanoparticle‹DNA origami constructs using centrifugation
Seung H. Ko, Luis Fernando Vargas Lara, Paul N. Patrone, Samuel M Stavis, Francis Starr, Jack F Douglas, James Alexander Liddle
DNA origami is a powerful platform for assembling gold nanoparticle constructs, an important class of nanostructure with numerous applications. Such constructs are assembled by the association of complementary DNA oligomers. These association reactio ...
6. Three Dimensional Cluster Distributions in Processed Multi-wall Carbon Nanotube Polymer Composites
Doyoung Moon, Jan Obrzut, Jack F Douglas, Thomas F. Lam, Krzysztof Koziol, Kalman D Migler
We determine the three-dimensional structure of melt-mixed carbon nanotube networks in an amorphous polymer via confocal microscopy and image analysis. We find that the CNTs networks consist of ramified clusters whose size distribution scales with cl ...
7. Resonant Microwave Absorption in Thermally Deposited Au Nanoparticle
Films Near Percolation Coverage
Jan Obrzut, Jack F Douglas, Oleg A Kirillov, Fred Sharifi, James Alexander Liddle
We observe a resonant transition in microwave absorption in thin thermally
deposited Au nanoparticle films near the geometrical percolation transition pc where the films
exhibit a ,fractal‰ heterogeneous geometry. The absorption of incident microwa ...
8. Rippling Instability of Supported Polymer Nanolines
Vijaya R. Tirumala, Christopher M Stafford, Leonidas E. Ocola, Jack F Douglas, L. Mahadevan
The swelling response of polymer line gratings supported on a rigid substrate has direct implications on their mechanical stability during pattern transfer in nanofabrication. The polymer lines, when swollen in a good solvent, undergo a rippling inst ...
9. Using Block Copolymer Self-Assembly to Imprint the Crystallization of Polymer Dendrites
Sangcheol Kim, Alamgir Karim, Jack F Douglas, Christopher L Soles, R M Briber
We utilize the self-assembly of cylinder-forming block copolymer (BCP) films to create templates for
dendritic polymer crystallization patterns. This templating was achieved by simply spin-casting thin
films from a solution containing both the BC ...
10. Flexure-induced structural and electronic changes in polymer supported membranes of length purified single-wall carbon nanotubes
John M. Harris, Ganjigunte R.S. Iyer, Daneesh O. Simien, Jeffrey A Fagan, JiYeon Huh, Jun Y. Chung, Steven D Hudson, Jan Obrzut, Jack F Douglas, Christopher M Stafford, Erik K Hobbie
Thin membranes of length purified single-wall carbon nanotubes (SWCNTs) are
uniaxially compressed by depositing them on prestretched polymer substrates. Upon
release of the strain, the topography, microstructure and conductivity of the films are