M. Bedewy*, B. Farmer*, A.J. Hart. Synergetic chemical coupling controls the uniformity of carbon nanotube microstructures. ACS Nano, 2014. [http://dx.doi.org/10.1021/nn500698z] Control of the uniformity of vertically aligned carbon nanotube structures (CNT “forests”), in terms of both geometry and nanoscale morphology (density, diameter, and alignment), is crucial for applications. Many studies report complex and sometimes unexplained spatial variations…

S. Pathak, N. Mohan, E. Decolvenaere, A. Needleman, M. Bedewy, A.J. Hart, J.R. Greer. Local relative density modulates failure and strength in vertically aligned carbon nanotubes. ACS Nano, 7(10):8593–8604, 2013. [http://dx.doi.org/10.1021/nn402710j] Micromechanical experiments, image analysis, and theoretical modeling revealed that local failure events and compressive stresses of vertically aligned carbon nanotubes (VACNTs) were uniquely linked to…

F.A. Hill, T.F. Havel, A.J. Hart, C. Livermore. Enhancing the tensile properties of continuous millimeter-scale carbon nanotube fibers by densification. ACS Applied Materials and Interfaces, 5(15):7198–7207, 2013. [http://pubs.acs.org/doi/abs/10.1021/am401524q]   This work presents a study of the tensile mechanical properties of millimeter-long fibers comprising carbon nanotubes (CNTs). These CNT fibers are made of aligned, loosely packed parallel networks of…

M. De Volder, A.J. Hart. Engineering hierarchical nanostructures by elastocapillary self-assembly. Angewandte Chemie. 52, 2013. [http://dx.doi.org/10.1002/anie.201205944] Surfaces coated with nanoscale filaments such as silicon nanowires and carbon nanotubes are potentially compelling for high-performance battery and capacitor electrodes, photovoltaics, electrical interconnects, substrates for engineered cell growth, dry adhesives, and other smart materials. However, many of these…

October 2009: John Hart will receive the 2010 Society of Manufacturing Engineers (SME)Outstanding Young Manufacturing Engineer Award, recognizing exceptional contributions and accomplishments in the manufacturing industry.

July 2008: SabreTube desktop CVD system wins R&D100 award as one of “100 most technologically significant new products of the year” – about the SabreTube About R&D 100 “Established by the editors of R&D Magazine, the annual R&D 100 Awards identify the 100 most significant, newly introduced research and development advances in multiple disciplines. Winning one of the R&D…