Publications

2016

Liang, Y., D. Sias, and S. Tawfick, “Tough Nano-Architectured Conductive Textile by Capillary Splicing of Carbon Nanotubes,” in press in Advanced Engineering Materials, 2017.
http://dx.doi.org/10.1002/adem.201600845 News Highlights: EurekAlert! Science Daily AZoNano Chemie.de Science World Report Economic Times ECNMag new electronics The Indian Tribune Innovations Report Photonics Online Electronics 360 Engineering@illinois MechSE@illinois

Li, M. Bedewy, A. Orbaek White, E. Polsen, S. Tawfick, A.J. Hart “Highly consistent atmospheric pressure synthesis of carbon nanotube forests by mitigation of moisture transients” The Journal of Physical Chemistry C 120 (20) pp. 11277-11287, 2016. http://dx.doi.org/10.1021/acs.jpcc.6b02878

Pagano, B. Leung, B. Chien, T. Yan, A. Wissa, S. Tawfick “Multi-stable origami structure for crawling locomotion” ASME conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS) 2016.

Robertson, J. Haseltine, S. Tawfick “Inflatable octet truss structures” ASME conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS) 2016.

Rao, S. Tawfick, M. Bedewy, A.J. Hart “Morphology-dependent load transfer governs the strength and failure mechanisms of carbon nanotube yarns” Extreme Mechanics Letters, 9 (1) 2016. http://dx.doi.org/10.1016/j.eml.2016.05.003

Tawfick, J. Bico, S. Barcelo “Three-dimensional lithography by elastocapillary engineering of filamentary materials” invited and accepted, MRS Bulletin, 41 (2) 2016. http://dx.doi.org/10.1557/mrs.2016.4

Lee, S. Tawfick “Micro-architectured electro- elasto- kinematic muscles” Extreme Mechanics Letters vol. 8, pp. 64-69, 2016. http://dx.doi.org/10.1016/j.eml.2016.03.003

Zhang, K. Han, S. Shi, G. Bahl, S. Tawfick “Highly Stretchable Conductors Made by Laser Draw-Casting of Ultralong Metal Nanowires” accepted in Advanced Electronic Materials 2016. http:/dx.doi.org/10.1002/aelm.201600003

2015

Bunyan, A. Vakakis, S. Tawfick “Mechanisms for impulsive energy dissipation and small-scale effects in microgranular media” Physical Review E 92 (6), 062206, 2015. http://dx.doi.org/10.1103/PhysRevE.92.062206

Li, S., W. Hua, M. Liang, M. Tuo, S. Tawfick, A.J. Hart, Q. Zhu, and H. Xin, “Anisotropic Microwave Conductivity Dispersion of Horizontally Aligned Multi-Walled Carbon- Nanotube Thin Film on Flexible Substrate,” Microwave Theory and Techniques, IEEE Transactions on, vol.63, no.11, pp.3588-3594, 2015. http://dx.doi.org/10.1109/TMTT.2015.2481397

2014

Park, A. Schmidt, S. Tawfick, A.J. Hart “Precise control of elastocapillary densification of nanostructures via low-pressure condensation” Journal of Micromechanics and Microengineering, 24 (6): 065019, 2014. http://dx.doi.org/10.1088/0960-1317/24/6/065019

Brieland-Shoultz*, S. Tawfick*, S. Park, M. Bedewy, M. Maschmann, J.W. Baur and A.J. Hart “Ceramic-carbon nanotube foams with 1000-fold tunable modulus, strength, and toughness” Advanced Functional Materials, 24 (36): 5728–5735, 2014. (*equal contribution) http://dx.doi.org/10.1002/adfm.201400851

G. Ok, J. Lee, H. Baac, S. Tawfick, L.J. Guo, A.J. Hart. Rapid anisotropic photoconductive response of ZnO-coated aligned carbon nanotube sheets. ACS Applied Materials and Interfaces. 6(2):874-881, 2014. http://dx.doi.org/10.1021/am404131r

De Volder, S. Park, S. Tawfick, A.J. Hart “Strain-engineered manufacturing of freeform carbon nanotube microstructures” Nature Communications 5: 4512, 2014 http://dx.doi.org/10.1038/ncomms5512

R. Maschmann, G.J. Ehlert, S. Tawfick, A.J. Hart, J.W. Baur. Continuum analysis of carbon nanotube array buckling enabled by anisotropic elastic measurements and modeling. Carbon, 66:377-386, 2014. [http://dx.doi.org/10.1016/j.carbon.2013.09.013]

2013

R. Oliver, E.S. Polsen, E.R. Meshot, S. Tawfick, S.J. Park, M. Bedewy, A.J. Hart. “A statistical analysis of variation in laboratory growth of carbon nanotube forests and recommendations for improvement of process consistency” ACS Nano7(4):3565–3580, 2013. http://dx.doi.org/10.1021/nn400507y

S. Tawfick, Z.Zhao, A. Brieland-Schultz, M. De Volder, W. Lu and A. J. Hart “Mechanics of capillary forming of carbon nanotubes” Langmuir 29 (17): 5190–5198, 2013. http://dx.doi.org/10.1021/la4002219 [pdf]

M. De Volder, S. Tawfick, R. Baughman and A. J. Hart “Carbon nanotubes – present and future commercial applications” Science 339:535-589, 2013. http://dx.doi.org/10.1126/science.1222453 [pdf]

2012

S. Tawfick, M. De Volder and A.J. Hart “Capillary Bending of Janus Carbon Nanotube Micropillars” Nanoscale, 4: 3852-3856, 2012 http://dx.doi.org/10.1039/C2NR30802A

E.R. Meshot, E.A. Verploegen, M. Bedewy, S. Tawfick, A.R. Woll, K.S. Green, M. Hromalik, L.J. Koerner, H.T. Philipp, M.W. Tate, S.M. Gruner and A.J. Hart “High-speed in situ X-ray scattering of carbon nanotube film nucleation and self-organization” ACS Nano, 6 (6), pp 5091–5101, 2012. http://dx.doi.org/10.1021/nn300758f

S. Tawfick, M. De Volder, D. Copic, S. Park, E. Polsen, R. Oliver, M. Robert, and A.J. Hart “Engineering micro- and nanostructured surfaces with anositropic properties” Advanced Materials, 24 (13): 1628–1674 2012. http://dx.doi.org/10.1002/adma.201103796

E. Meshot, K. Patel, S. Tawfick, K. Juggernauth, M. Bedewy, E. Verploegen, M. De Volder and A.J. Hart “Photoconductive hybrid films via directional self-assembly of C60 on aligned carbon nanotubes” Advanced Function Materials, 22 (3): 577–584, 2012. http://dx.doi.org/ 10.1002/adfm.201102393

2011

M. De Volder, S. Tawfick, S.J. Park, A.J. Hart. “Corrugated carbon nanotube microstructures with geometrically tunable compliance.” ACS Nano, 5(9):7310-7317, 2011. http://dx.doi.org/10.1021/nn202156q [cover art]

D. Copic, S. Park, S. Tawfick, M. De Volder and A.J. Hart. ‘Fabrication of high-aspect-ratio polymer microstructures and hierarchical textures using carbon nanotube master molds.” Lab on a Chip, 11: 1831-1837, 2011. http://dx.doi.org/10.1039/c0lc00724b

M. De Volder, S. Tawfick, D. Copic and A.J. Hart. “Hydrogel-driven carbon nanotube microtransducers.” Soft Matter, 7: 9844-9847, 2011. http://dx.doi.org/10.1039/C1SM06215H

S. Tawfick, M. De Volder and A.J. Hart. “Structurally programmed folding of vertical nanostructures.” Langmuir, 27 (10): 6389–6394, 2011. http://dx.doi.org/10.1021/la200635g

E.A. Verploegen, A.J. Hart, S. Tawfick, G. Chia, R.E. Cohen. “Non-destructive characterization of structural hierarchy within carbon nanotube assemblies.” Journal of Applied Physics, 109, 094316, 2011. http://dx.doi.org/10.1063/1.3584759

M. De Volder, S. Park, S. Tawfick, A.J. Hart. “Fabrication and electrical integration of robust carbon nanotube micropillars by self-directed elastocapillary densification.” Journal of Micromechanics and Microengineering, 21, 045033, 2011. http://dx.doi.org/10.1088/0960-1317/21/4/045033

2010

Z. Zhao, S. Tawfick, S.J. Park, M. De Volder, A.J. Hart, W. Lu. “Formation of asymmetric filament assemblies by elastocapillary densification.” Physical Review E 82:041605, 2010. http://dx.doi.org/10.1103/PhysRevE.82.041605

M. De Volder*, S. Tawfick*, S. Park, D. Copic, Z. Zhao, W. Lu, A.J. Hart. “Diverse 3D microarchitectures made by capillary forming of carbon nanotubes.” Advanced Materials 22:4384-4389, 2010 (*equal contribution). http://dx.doi.org/10.1002/adma.201001893 [cover art]

J. G. Ok, S. Tawfick, K. A. Juggernauth, K. Sun, Y. Zhang, and A.J. Hart. “Electrically addressable hybrid architectures of zinc oxide nanowires grown on aligned carbon nanotubes.” Advanced Functional Materials 20:2470-2480, 2010. http://dx.doi.org/10.1002/adfm.201000249 [Front piece feature]

M. Bedewy, E. Meshot, K. Lyons, A. Woll, K. Juggernauth, S. Tawfick and A.J. Hart. “Measuring the lengthening kinetics of aligned nanostructures by spatiotemporal correlation of height and orientation.” Nanoscale 2:896-900, 2010. http://dx.doi.org/10.1039/b9nr00343f

S. Tawfick, X. Deng, A.J. Hart, J. Lahann. “Nanocomposite Microstructures with Controllable Mechanical and Chemical Properties.” Physical Chemistry and Chemical Physics, 12:4446-4451, 2010. http://dx.doi.org/10.1039/c000304m

M. De Volder, D.O. Vidaud, E.R. Meshot, S. Tawfick, A.J. Hart. “Self-similar organization of arrays of individual carbon nanotubes and carbon nanotube micropillars.” Microelectronic Engineering 87(5-8):1233-1238, 2010. http://dx.doi.org/10.1016/j.mee.2009.11.139

2009

S. Tawfick, K. O’Brien, A.J. Hart. “Flexible High Conductivity Carbon Nanotube Interconnects Made by Rolling and Printing.”, Small, 5 (21), pp 2467-2473, 2009. http://dx.doi.org/10.1002/smll.200900741

E.R. Meshot, D.L. Plata, S. Tawfick, Y. Zhang, E. Verploegen, A.J. Hart. “Engineering Vertically Aligned Carbon Nanotube Growth by Decoupled Thermal Treatment of Precursor and Catalyst.”, ACS Nano, 3 (9), pp 2477–2486, 2009. http://dx.doi.org/10.1021/nn900446a

2007

A. El-Shafei, S. Tawfick, “Some Experiments on Oil Whirl and Oil Whip.”, ASME Journal of Engineering for Gas Turbines and Power, 129 (1), pp 144-153, 2007. http://dx.doi.org/10.1115/1.2181185