All Publications

  • A freely suspended robotic swimmer propelled by viscoelastic normal stresses JOURNAL OF FLUID MECHANICS Kroo, L. A., Binagia, J. P., Eckman, N., Prakash, M., Shaqfeh, E. G. 2022; 944
  • In Situ Direct Laser Writing of 3D Graphene-Laden Microstructures ADVANCED MATERIALS TECHNOLOGIES Restaino, M., Eckman, N., Alsharhan, A. T., Lamont, A. C., Anderson, J., Weinstein, D., Hall, A., Sochol, R. D. 2021; 6 (8)
  • Ignition and combustion analysis of direct write fabricated aluminum/metal oxide/PVDF films COMBUSTION AND FLAME Rehwoldt, M. C., Wang, H., Kline, D. J., Wu, T., Eckman, N., Wang, P., Agrawal, N. R., Zachariah, M. R. 2020; 211: 260-269
  • Why does adding a poor thermal conductor increase propagation rate in solid propellants? APPLIED PHYSICS LETTERS Kline, D. J., Rehwoldt, M. C., Wang, H., Eckman, N. E., Zachariah, M. R. 2019; 115 (11)

    View details for DOI 10.1063/1.5113612

    View details for Web of Science ID 000486002700007

  • Direct Writing of a 90 wt% Particle Loading Nanothermite ADVANCED MATERIALS Wang, H., Shen, J., Kline, D. J., Eckman, N., Agrawal, N. R., Wu, T., Wang, P., Zachariah, M. R. 2019; 31 (23): e1806575


    The additive manufacturing of energetic materials has received worldwide attention. Here, an ink formulation is developed with only 10 wt% of polymers, which can bind a 90 wt% nanothermite using a simple direct-writing approach. The key additive in the ink is a hybrid polymer of poly(vinylidene fluoride) (PVDF) and hydroxy propyl methyl cellulose (HPMC) in which the former serves as an energetic initiator and a binder, and the latter is a thickening agent and the other binder, which can form a gel. The rheological shear-thinning properties of the ink are critical to making the formulation at such high loadings printable. The Young's modulus of the printed stick is found to compare favorably with that of poly(tetrafluoroethylene) (PTFE), with a particle packing density at the theoretical maximum. The linear burn rate, mass burn rate, flame temperature, and heat flux are found to be easily adjusted by varying the fuel/oxidizer ratio. The average flame temperatures are as high as ≈2800 K with near-complete combustion being evident upon examination of the postcombustion products.

    View details for DOI 10.1002/adma.201806575

    View details for Web of Science ID 000474087100019

    View details for PubMedID 30993751