Journal Publications

Note: student authors are identified by italic type.

  • M. Ralphs, B. Smith, and N.A. Roberts, "Technique for Direct Measurement of Thermal Conductivity of Elastomers and a Detailed Uncertainty Analysis," Measurement Science and Technology, Vol. 27, 115014, 2016.
  • S. Adams, B. Black, G. Fazio, and N.A. Roberts, "The effect of plant growth regulators on apple graft union flexural strength and flexibility," Journal of the American Pomological Society, Vol. 70, No. 4, 2016.
  • D. Wood, D.K. Hensley, and N.A. Roberts, "Enhanced thermal conductance of polymer composites through embedding aligned carbon nanofibers," AIMS Materials Science, Vol. 3, No. 3, pp. 851-861, 2016.
  • C-J. Choi and N.A. Roberts, "A simple model for the effective thermal conductivity of bulk nanostructured materials," International Journal of Thermal Sciences, Vol. 104, pp. 13-19, 2016.
  • C-J. Choi and N.A. Roberts, "Contributions of mass and bond energy difference and interface defects on thermal boundary conductance," AIP Advances, Vol. 5, 097160, 2015.
  • M. Stanford, B. Lewis, J-H. Noh, J.D. Fowlkes, N.A. Roberts, H. Plank, and P.D. Rack, "Purification of nanoscale electron beam induced platinum deposits via pulsed laser induced oxidation reaction," ACS Applied Materials and Interfaces, Vol. 6, No. 23, pp. 21256-21263, 2014.
  • D. Skigin, J.D. Fowlkes, N.A. Roberts, L. Scaffardi, D. Schinca, and M. Lester, "Control of the diffracted response of a metallic wire array with double period: experimental demonstration," Vol. 39, No. 19, pp. 5693-5696, 2014.
  • J.D. Fowlkes, N.A. Roberts, Y. Wu, J.A. Diez, A.G. Gonzalez, C. Hartnet, K. Mahady, S. Afkhami, L. Kondic and P.D. Rack, "Hierarchial Nanoparticle Ensembles Synthesized by Liquid Phase Directed Self-Assembly," Nano Letters, Vol. 14, No. 2, pp. 774-782, 2014.
  • N.A. Roberts, C.M. Gonzalez, J.D. Fowlkes and P.D. Rack, "Enhanced by-product desporption via laser assisted electron beam induced deposition of W(CO)6 with improved conductivity and resolution," Nanotechnology, Vol. 24, 415301, 2013.
  • N.A. Roberts, J.D. Fowlkes, K. Mahady, S. Afkhami, L. Kondic and P.D. Rack, "Directed Assembly of One- and Two-Dimensional Nanoparticle Arrays from Pulsed Laser Induced Dewetting of Square Waveforms," ACS Applied Materials and Interfaces, Vol. 5, No. 10, pp. 4450-4456, 2013.
  • N.A. Roberts, J.D. Fowlkes, G.A. Magel and P.D. Rack, "Enhanced purity and resolution via laser assisted electron beam induced deposition of platinum," Nanoscale, Vol. 5, No. 1, pp. 408-415, 2013.
  • J.T. McKeown, N.A. Roberts, J.D. Fowlkes, Y. Wu, T. LaGrange, B.W. Reed, G.H. Campbell and P.D. Rack, "Real-time observation of nanosecond liquid-phase assembly of nickel nanoparticles via pulsed-laser heating," Langmuir, Vol. 28, No. 49, pp. 17168-17175, 2012.
  • J.D. Fowlkes, L. Kondic, J.A. Diez, A.G. Gonzalez, Y. Wu, N.A. Roberts, C. E. McCold and P.D. Rack, "Parallel assembly of particles and wires on substrates by dictating instability evolution in liquid metal films," Nanoscale, Vol. 4, No. 23, pp. 7376-7382, 2012. Selected for Journal Cover Image
  • N.A. Roberts, G.A. Magel, C.D. Hartfield, T.M. Moore, J.D. Fowlkes and P.D. Rack, "In situ laser processing in a scanning electron microscope," Journal of Vacuum Science and Technology A, Vol. 30, No. 4, 041404, 2012.
  • N.A. Roberts, J.H. Noh, M.G. Lassiter, S. Guo, S.V. Kalinin and P.D. Rack, "Synthesis and electroplating of high resolution insulated carbon nanotube scanning probes for imaging in liquid solutions," Nanotechnology, Vol. 23, 145301, 2012.
  • Y. Wu, J.D. Fowlkes, N.A. Roberts, J.A. Diez, L. Kondic, A.G. Gonzalez and P.D. Rack, "Competing liquid phase instabilities during pulsed laser induced self-assembly of copper rings into ordered nanoparticle arrays on SiO2," Langmuir, Vol. 27, No. 21, pp. 13314-13323, 2011.
  • N.A. Roberts and D.G. Walker, "Computational Study of Thermally Rectifying Behavior from Nanostructured Interfaces," Journal of Heat Transfer, Vol. 133, No. 9, 2011.
  • N.A. Roberts and D.G. Walker, "A Review of Thermal Rectification Observations and Models in Solid Materials," International Journal of Thermal Sciences, Vol. 50, No. 5, pp. 648-662, 2011.
  • N.A. Roberts and D.G. Walker, "Investigation of Computational and Visual Modules to Enhance Learning in Undergraduate Heat Transfer," Computers in Education Journal, Vol. 21, No. 1, 2011.
  • N.A. Roberts and D.G. Walker, "Phonon Wave-Packet Simulations of Ar/Kr Interfaces for Thermal Rectification," Journal of Applied Physics, Vol. 108, No. 12, 123515, 2010.
  • N.A. Roberts and D.G. Walker, "Convective Performance of Nanofluids in Commercial Systems," Applied Thermal Engineering, Vol. 30, No. 16, pp. 2499-2504, 2010.
  • N.A. Roberts, D.G. Walker and D.Y. Li, "Molecular Dynamics Simulation of Thermal Conductivity of Nanocrystalline Composite Films," International Journal of Heat and Mass Transfer, Vol. 52, No. 7-8, pp. 2002-2008, 2009.
  • Refereed Conference Publications

  • C-J. Choi, W.T. Yorgason, and N.A. Roberts, "Prediction of Thermal Boundary Conductance at the Interface with Phonon Wave-packet Simulations: The Roles of Vibrational Spectra Differences, Interface Bond Strength, and Inelastic Scattering," ASME Summer Heat Transfer Conference, July 11-14, 2016, Washington D.C., USA.
  • M. Ralphs and N.A. Roberts, "Effect of CNT Functionalization on the Thermal Conductivity of PDMS/CNT Composites," International Mechanical Engineering Congress and Exposition, November 13-19, 2015, Houston, TX, USA.
  • E. Davis and N.A. Roberts, "Functionalized Graphene and Carbon Nanotube Powders," National Conference on Undergraduate Research, April 16-18, 2015, Eastern Washington University, Spokane, WA, USA.
  • C-J. Choi and N.A. Roberts, "Impact of Mass and Lattice Difference on Thermal Boundary Conductance," MRS Spring Meeting, April 6-10, 2015, San Francisco, CA, USA
  • J.T. McKeown, N.A. Roberts, J.D. Fowlkes, Y. Wu, T. LaGrange, B.W. Reed, P.D. Rack and G.H. Campbell, "In-Situ Pulsed-Laser Induced Dewetting: Probing the Assembly Dynamics of Nanoparticle Arrays," Microscopy and Microanalysis, August 4-8, 2013, Indianapolis, IN, USA.
  • G.A. Magel, N.A. Roberts, J.D. Fowlkes, P.D. Rack, C.D. Hartfield and T.M. Moore, "Laser-assisted nanofabrication in the scanning electron microscope," 12th IEEE Conference on Nanotechnology, August 20-23, 2012, Birmingham, England.
  • J.A. Diez, A.G. Gonzalez, Y. Wu, J.D. Fowlkes, N.A. Roberts, P.D. Rack and L. Kondic, "Pulsed laser induced self-assembly of nanoparticle arrays: Competing liquid phase instabilities," 64th Annual Meeting of the APS Division of Fluid Dynamics, November 20-22, 2011, Baltimore, MD, USA.
  • N.A. Roberts and D.G. Walker, "Phonon Transport in Asymmetric Sawtooth Nanowires," ASME-JSME Thermal Engineering Joint Conference, March 13-17, 2010, Honolulu, Hawaii, USA.
  • N.A. Roberts and D.G. Walker, "Investigation of Computational and Visual Modules to Enhance Learning in Undergraduate Heat Transfer," ASEE Annual Conference and Exposition, June 20-22, 2010, Louisville, Kentucky, USA.
  • N.A. Roberts and D.G. Walker, "Phonon Wave-Packet Simulations of Ar/Kr-like Interfaces," ITherm 2010, June 2-5, 2010, Las Vegas, Nevada, USA.
  • N.A. Roberts and D.G. Walker, "Analysis of Nanofluids in Liquid Electronics Cooling Systems," InterPACK ’09, July 19-23, 2009, San Francisco, CA, USA.
  • N.A. Roberts and D.G. Walker, "Molecular Dynamics Simulation of Thin Films with Rough and Asymmetric Interfaces," 19th International Symposium on Transport Phenomena, August 17-21, 2008, University of Iceland, Reykjavik, Iceland.
  • N.A. Roberts and D.G. Walker, "Monte Carlo Study of Thermal Transport of Frequency and Direction Dependent Reflecting Boundaries in High Kn Systems," ITherm 2008, May 28-31, 2008, Orlando, FL, USA.
  • N.A. Roberts, D.G. Walker and D.Y. Li, "Molecular Dynamics Simulation of Thermal Conductivity of Nanocrystalline Composite Films," ASME-JSME Summer International Heat Transfer Conference, July 8-12, 2007, Vancouver, BC, Canada.
  • Other Publications/Presentations

  • C-J. Choi and N.A. Roberts, "Prediction of Thermal Boundary Conductance using Equilibrium Molecular Dynamics Simulations with the Green-Kubo Formalism," IMECE 2016, November 11-17, 2016, Phoenix, AZ, USA.
  • S. Driggs and N.A. Roberts, "Time averaging versus ensemble averaging in phonon Monte Carlo simulations for the calculation of thermal conductivity," IMECE 2016, November 11-17, 2016, Phoenix, AZ, USA.
  • B. White, M. Stoker, and N.A. Roberts, "Reductions in the Size and Spacing of Ni Nanoparticles Dewet Via Laser Pulse through the Addition of Alumina Capping Layers," Materials Science and Technology 16, October 23-27, 2016, Salt Lake City, UT, USA.
  • N.A. Roberts, "Directed and Self Assembly of Nanoparticles on a Substrate," Invited Talk, SDL-USU Technical Lecture Series, September, 28, 2016, Logan, UT, USA.
  • C-J. Choi, W.T. Yorgason, and N.A. Roberts, "Prediction of Thermal Boundary Conductance at the Interface with Phonon Wave-packet Simulations: The Roles of Vibrational Spectra Differences, Interface Bond Energy, and Inelastic Scattering," ASME Summer Heat Transfer Conference, July 11-14, 2016, Washington D.C., USA.
  • P. Medisetti and N.A. Roberts, "Role of Dispersion and Functionalization on Mechanical Properties in Carbon Nanotube-Polymer Composites," MRS Spring 2016, March 28-April 1, 2016, Phoenix, AZ, USA.
  • A. Ramesh, S. Driggs, and N.A. Roberts, "A Monte Carlo Approach for Efficient Inclusion of Interface and Grain Boundary Scattering in the Prediction of Effective Thermal Conductivity," TMS2016, February 14-18, 2016, Nashville, TN, USA.
  • B. White and N.A. Roberts, "Modified Rayleigh Plateau Distribution of Dewet Metal Nanoparticles by Varied Solid-Liquid-Vapor and Solid-Liquid-Solid Interactions," TMS2016, February 14-18, 2016, Nashville, TN, USA.
  • C-J. Choi and N.A. Roberts, "Phonon Wave-Packet Simulations for the Prediction of Thermal Boundary Conductance," TMS2016, February 14-18, 2016, Nashville, TN, USA.
  • P. Medisetti and N.A. Roberts, "The Role of Chemical Disperson and Functionalization on Mechanical Properties of Carbon Nanotube-Polymer Composites," TMS2016, February 14-18, 2016, Nashville, TN, USA.
  • W.T. Yorgason and N.A. Roberts, "Size Dependent Thermal Conductivity of Single-Wall Carbon Nanotubes from Molecular Dynamics Simulations," TMS2016, February 14-18, 2016, Nashville, TN, USA.
  • N.A. Roberts, "Thermal transport modification and rectification at interfaces between dissimilar materials and their applications," BYU Graduate Seminar, December 7, 2015, Provo, UT, USA.
  • M. Ralphs and N.A. Roberts, "Effect of CNT Functionalization on Thermal Conductivity of PDMS/CNT Composites," IMECE 2015, November 11-17, 2015, Houston, TX, USA.
  • A. Ramesh and N.A. Roberts, "Thermal Conductivity of Nano Silicon using Monte-Carlo Methods," Nano Utah 2015, October 13, 2015, Salt Lake City, UT, USA.
  • P. Medisetti and N.A. Roberts, "Disperson of carbon nanotubes in Sylgard 184 Silicone Elastomer using Ethanol," Nano Utah 2015, October 13, 2015, Salt Lake City, UT, USA.
  • B. White and N.A. Roberts, "The Effects of Different Thickness Al2O3 Capping Layers on the Morphology of Laser Pulse Induced Dewet Ni Films," Nano Utah 2015, October 13, 2015, Salt Lake City, UT, USA.
  • C-J. Choi and N.A. Roberts, "Phonon wave-packet simulations for the prediction of thermal property at the interface between dissimilar materials," Nano Utah 2015, October 13, 2015, Salt Lake City, UT, USA.
  • C-J. Choi and N.A. Roberts, "Thermal Conductivity Prediction in Bulk Nanostructured Materials from Single Interface Molecular Dynamics Simulations," InterPACK 2015, July 6-9, 2015, San Francisco, CA, USA.
  • E. Davis and N.A. Roberts, "Functionalized Graphene and Carbon Nanotube Powders," National Conference on Undergraduate Research, April 16-18, 2015, Spokane, WA, USA.
  • C-J. Choi and N.A. Roberts, "Impact of Mass and Lattice Difference on Thermal Boundary Conductance," MRS Spring, April 6-10, 2015, San Francisco, CA, USA.
  • M. Ralphs and N.A. Roberts, "Effect of CNT Functionalization on Thermal Conductivity of PDMS/CNT Composites," USU Student Research Symposium, April, 2015, Logan, UT, USA.
  • D. Wood, D.K. Hensley, and N.A. Roberts, "Enhanced Thermal Conductivity of Carbon Nanofiber and Carbon Nanotube/PDMS Composite Materials," USU Student Research Symposium, April, 2015, Logan, UT, USA.
  • E. Davis and N.A. Roberts, "Graphene Synthesis through Physical Exfoliation Process," USU Student Research Symposium, April, 2015, Logan, UT, USA.
  • B. White, T-C. Shen, and N.A. Roberts, "Improved CNT Growth Control through a Directed Self-Assembly Process," USU Student Research Symposium, April, 2015, Logan, UT, USA.
  • C-J. Choi and N.A. Roberts, "Impact of mass and lattice difference on thermal boundary conductance," NanoUtah 2014, October 13, 2014, University of Utah, Salt Lake City, UT, USA.
  • A.M. John and N.A. Roberts, "Thermal Conductivity Enhancement of PCMs using Nanoparticles," NanoUtah 2014, October 13, 2014, University of Utah, Salt Lake City, UT, USA.
  • B.C. White, T.C. Shen, and N.A. Roberts, "Diameter Dependence of Carbon Nanotube Growth from Different Stoichiometric Ratio Nickel Silicide Films," NanoUtah 2014, October 13, 2014, University of Utah, Salt Lake City, UT, USA.
  • D. Wood, D.K. Hensley, and N.A. Roberts, "Reduced Thermal Contact Resistance from Vertically Aligned Carbon Nanofiber-Polymer Composites," NanoUtah 2014, October 13, 2014, University of Utah, Salt Lake City, UT, USA.
  • N.A. Roberts, "Phonon engineering via nanoscale material synthesis," NanoUtah, October 18, 2013, University of Utah, Salt Lake City, UT, USA.
  • N.A. Roberts, J.D. Fowlkes and P.D. Rack, "Directed assembly of one- and two-dimensional nanoparticle arrays via pulsed laser induced dewetting," MRS Fall Meeting, November 26-30, 2012, Boston, MA, USA.
  • N.A. Roberts, G.A. Magel, C.D. Hartfield, T.M. Moore, J.D. Fowlkes and P.D. Rack, "In situ laser processing in a scanning electron microscope," 2012 CNMS User Meeting, September 14, 2012, Oak Ridge, TN, USA.
  • N.A. Roberts, G.A. Magel, C.D. Hartfield, T.M. Moore, J.D. Fowlkes and P.D. Rack, "A triple beam microscope: focused laser processing in a scanning ion/electron microscope," 2012 CNMS User Meeting, September 13, 2012, Oak Ridge, TN, USA.
  • N.A. Roberts, J.D. Fowlkes, P.D. Rack, G.A. Magel, H.M. Marchman, C.D. Hartfield and T.M. Moore, "Laser-Assisted Electron-Beam Induced Deposition and Etching," AVS, November 1, 2011, Nashville, TN, USA.
  • N.A. Roberts, J.D. Fowlkes, P.D. Rack, G.A. Magel, H.M. Marchman, C.D. Hartfield and T.M. Moore, "In situ Optical Imaging and Laser Processing in the SEM/FIB: A True EIPBN System," 55th International Conference on Electron, Ion, Photon Beam Technology and Nanofabrication, May 31- June 3, 2011, Las Vegas, NV, USA.