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Nick Roberts
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Articles
Presentations
Articles
(20)
Article
Directed Assembly of One- and Two-Dimensional Nanoparticle Arrays from Pulsed ...
ACS Applied Materials and Interfaces (2013)
Nicholas A. Roberts, J. D. Fowlkes, K. Mahady, S. Afkhami, et al.
The directed assembly of arrayed nanoparticles is demonstrated by dictating the flow of a liquid phase filament on the nanosecond ...
Article
Enhanced purity andresolution via laser assistedelectron beam induced deposition of ...
Nanoscale (2013)
Nick A. Roberts, J. D. Fowlkes, G. A. Magel and P. D. Rack
We introduce a laser assisted electron beam induced deposition (LAEBID) process which is a nanoscale direct write synthesis method that ...
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Article
In situ laser processing in a scanning electron microscope
Journal of Vacuum Science and Technology A (2012)
Nick Roberts
Laser delivery probes using multimode fiber optic delivery and bulk focusing optics have been constructed and used for performing materials ...
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Article
Laser-assisted nanofabrication in the scanning electron microscope
Mechanical and Aerospace Engineering Faculty Publications (2012)
G. A. Magel, Nicholas A. Roberts, J. D. Fowlkes, P. D. Rack, et al.
A prototype apparatus was developed to deliver up to ~300 kW/cm 2 of cw or pulsed near IR light to ...
Article
Parallel assembly of particles and wires on substrates by dictating ...
Nanoscale (2012)
J. D. Fowlkes, L. Kondic, J. A. Diez, A. G. Gonzalez, et al.
Liquid metal wires supported on substrates destabilize into droplets. The destabilization exhibits many characteristics of the Rayleigh–Plateau model of fluid ...
Article
Real-time observation of nanosecond liquid-phase assembly of nickel nanoparticles via ...
Langmuir (2012)
J. T. McKeown, Nicholas A. Roberts, J. D. Fowlkes, Y. Wu, et al.
Using pump-probe electron microscopy techniques, the dewetting of thin nickel films exposed to a pulsed nanosecond laser was monitored at ...
Article
Synthesis and electroplating ofhigh resolution insulated carbon nanotube scanning probesfor ...
Nanotechnology (2012)
Nicholas A. Roberts, J. H. Noh, M. G. Lassiter, S. Guo, et al.
High resolution and isolated scanning probe microscopy (SPM) is in demand for continued development of energy storage and conversion systems ...
Article
A Review of Thermal Rectification Observations and Models in SolidMaterials
Journal of Thermal Sciences (2011)
Nicholas A. Roberts and D. G. Walker
Thermal rectification is a phenomenon in which thermal transport along a specific axis is dependent upon the sign of the ...
Article
Competing liquidphase instabilities during pulsed laser induced self assembly of ...
Langmuir (2011)
Y. Wu, J. D. Fowlkes, Nicholas A. Roberts, J. A. Diez, et al.
Nanoscale copper rings of different radii, thicknesses, and widths were synthesized on silicon dioxide thin films and were subsequently liquefied ...
Article
Computational Study of Thermally Rectifying Behavior from NanostructuredInterfaces
Journal of Heat Transfer (2011)
Nicholas A. Roberts and D. G. Walker
Thermal rectification is a phenomenon in which transport is preferred in one direction over the opposite. Although observations of thermal ...
Article
Pulsed laser induced self-assembly of nanoparticle arrays: Competing liquid phase ...
Mechanical and Aerospace Engineering Faculty Publications (2011)
J. A. Diez, A. G. Gonzalez, Y. Wu, J. D. Fowlkes, et al.
Article
Phonon Wave-Packet Simulations of Ar/Kr Interfaces for ThermalRectification
Journal of Applied Physics (2010)
Nick A. Roberts and D. G. Walker
The frequency and direction dependence of transmission coefficients at interfaces was investigated theoretically. The interfaces are formed by having two ...
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Article
Convective Performance of Nanofluids in Commercial Systems
Applied Thermal Engineering (2010)
Nicholas A. Roberts and D. G. Walker
Nanofluids are stable engineered colloidal suspensions of a small fraction of nanoparticles in a base fluid. Nanofluids have shown great ...
Article
Investigation of Computational and VisualModules to Enhance Learning inUndergraduate Heat ...
Mechanical and Aerospace Engineering Faculty Publications (2010)
Nicholas A. Roberts and D. G. Walker
Engineering concepts can be difficult for some types of learners when the problem or system un- der consideration is difficult ...
Article
Phonon Transport in Asymmetric Sawtooth Nanowires
Mechanical and Aerospace Engineering Faculty Publications (2010)
Nicholas A. Roberts and D. G. Walker
Thermal transport in asymmetric sawtooth nanowires was investigated. The boundaries reflect phonons differently depending on the frequency and momentum of ...
Article
Phonon Wave-Packet Simulations of Ar/Kr-like Interfaces
Mechanical and Aerospace Engineering Faculty Publications (2010)
Nicholas A. Roberts and D. G. Walker
The frequency- and direction-dependence of transmission coefficients at interfaces was investigated theoretically. The interfaces are formed by having two Lennard-Jones ...
Article
Analysis of Nanofluids in Liquid Electronics Cooling System
Mechanical and Aerospace Engineering Faculty Publications (2009)
Nicholas A. Roberts and D. G. Walker
Nanofluids are solutions of a small fraction of suspended nanoparticles in a bulk fluid. Nanofluids have shown great promise as ...
Article
Molecular Dynamics Simulation of Thermal Conductivity ofNanocrystalline Composite Films
International Journal of Heat and Mass Transfer (2009)
Nicholas A. Roberts, D. G. Walker and D. Y. Li
The efficiency of a thermoelectric material is measured by the figure of merit ZT, which is inversely proportional to the ...
Article
Molecular Dynamics Simulation of Thin Film s with Rough and ...
Mechanical and Aerospace Engineering Faculty Publications (2008)
Nick A. Roberts and D. G. Walker
Article
Monte Carlo Study of Thermal Transport of Frequency and DirectionDependent ...
Mechanical and Aerospace Engineering Faculty Publications (2008)
Nicholas A. Roberts and D. G. Walker
The effective thermal conductivity of non-continuum wires with rough boundaries was investigated theoretically. The boundaries were designed to reflect phonons ...
Presentations
(9)
Presentation
A triple beam microscope: focused laser processing in a scanning ...
Mechanical and Aerospace Engineering Faculty Publications (2012)
Nicholas A. Roberts, G. A. Magel, C. D. Hartfield, T. M. Moore, et al.
Presentation
Directed assembly of one- and tw o-dimensional nanoparticle arrays via ...
Mechanical and Aerospace Engineering Faculty Publications (2012)
Nicholas A. Roberts, J. D. Fowlkes and P. D. Rack
Presentation
In situ laser processing in a scanning electron microscope
Mechanical and Aerospace Engineering Faculty Publications (2012)
Nicholas A. Roberts, G. A. Magel, C. D. Hartfield, T. M. Moore, et al.
Presentation
Laser Assisted Electron Beam Induced Deposition of Platinum
Mechanical and Aerospace Engineering Faculty Publications (2012)
Nicholas A. Roberts, J. D. Fowlkes, G. A. Magel, T. M. Moore, et al.
Presentation
In situ Optical Imaging and Laser Processing in the SEM ...
Mechanical and Aerospace Engineering Faculty Publications (2011)
Nicholas A. Roberts, J. D. Fowlkes, P. D. Rack, G. A. Magel, et al.
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