Brett A. Cruden

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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)
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)
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)
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 micro-and nanofibrillar arrayed features on their feet. [1–3] The fibrillar structures provide conformal contact with the opposing surfaces to maximize the van der Waals (vdW) interactions. [4] These adhesive systems found in nature have inspired researchers(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)
h i g h l i g h t s g r a p h i c a l a b s t r a c t Si-coated VACNFs Li-ion battery anode is characterized at high current rates. The high-power capability and long cycling efficiency of nano-hybrid electrode is discussed. A new phenomenon of increasing capacity at increasing current at high rates is presented. Keywords: Li-ion battery anodes High(More)
Kingdom The role of plasma in plasma enhanced chemical vapor deposition of carbon nanotubes and nanofibers is investigated with both experimental and computational diagnostic techniques. A residual gas analysis (RGA) of a 12 mbar direct current (dc) discharge with a C 2 H 2 /NH 3 gas mixture is conducted near the Ni catalyst surface employed for carbon(More)
Fabrication of nanoscaled transistors based on carbon nanotubes and inorganic nanowires is typically demonstrated with a " pick-and-place " or similar method which allows for fabrication of small numbers of transistors at a time. While these, and other, devices have been used to demonstrate potential applications of carbon nanotubes, these methods are not(More)