Brett A. Cruden

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We have measured the thermal resistance of a 152-nm-diameter carbon nanofiber before and after a platinum layer was deposited on the contacts between the nanofiber and the measurement device. The contact resistance was reduced by the platinum coating for about 9–13% of the total thermal resistance of the nanofiber sample before the platinum coating. At a(More)
Microchannel based systems have emerged as a critical design trend in development of precise control and maneuvering of small devices. In microelectronics, space propulsion and biomedical areas, these systems are especially useful. Nanoscale pores are recently becoming of great interest due to their beneficial drag and heat transfer properties. However it(More)
the filter were measured using condensation particle counters (TSI Inc. model 3022A). Submicrometer particles entering the counters are grown into micrometer sized droplets by condensation of a supersatu-rated vapor of 1-butanol onto the particles, then counted by laser light scattering. The particle concentrations were averaged over ten measurements at(More)
Plasma-enhanced chemical vapor deposition is used to grow vertically aligned multiwalled carbon nanofibers (MWNFs). The graphite basal planes in these nanofibers are not parallel as in nanotubes; instead they exhibit a small angle resembling a stacked cone arrangement. A parametric study with varying process parameters such as growth temperature, feedstock(More)
We report the first determination of the slip coefficient for tubular carbon structures that have been produced by chemical vapor deposition on a porous alumina substrate with nominal pore diameters of 200 nm. A uniform 20−30 nm thick carbonaceous coating was formed over the pores. The permeability of the porous alumina was then measured using a(More)
We have grown a dense array of vertically aligned carbon nanotubes (CNTs) with a controlled distribution of diameters by using block copolymer micelles to form and pattern catalyst particles. The block copolymer poly(styrene-block-acrylic acid) (PS16500-PAA4500) was dissolved in toluene to form micelles and then loaded with FeCl3. The metal-loaded micelles(More)
Interfacial thermal resistance results of various nanotube and nanofiber coatings, prepared by chemical vapor deposition (CVD) methods, are reported at relatively low clamping pressures. The five types of samples examined include multi-walled and single-walled nanotubes growth by CVD, multi-walled nanotubes grown by plasma enhanced CVD (PECVD) and carbon(More)
The growth of carbon nanofibres (CNF) by plasma enhanced chemical vapour deposition (PECVD) and the integration of CNFs into devices are studied using high throughput methodology. A growth compatibility chip containing candidate metal contact underlayers and transition metal catalyst layers are used to explore growth activity from various pairings of these(More)
The ability of gecko lizards and many insects to climb vertical surfaces relies on the hierarchical microand nanofibrillar arrayed features on their feet. The fibrillar structures provide conformal contact with the opposing surfaces to maximize the van der Waals (vdW) interactions. These adhesive systems found in nature have inspired researchers to design(More)