Noah Eckman
Ph.D. Student in Chemical Engineering, admitted Autumn 2021
All Publications
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A freely suspended robotic swimmer propelled by viscoelastic normal stresses
JOURNAL OF FLUID MECHANICS
2022; 944
View details for DOI 10.1017/jfm.2022.485
View details for Web of Science ID 000817205500001
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In Situ Direct Laser Writing of 3D Graphene-Laden Microstructures
ADVANCED MATERIALS TECHNOLOGIES
2021; 6 (8)
View details for DOI 10.1002/admt.202100222
View details for Web of Science ID 000663380000001
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Ignition and combustion analysis of direct write fabricated aluminum/metal oxide/PVDF films
COMBUSTION AND FLAME
2020; 211: 260-269
View details for DOI 10.1016/j.combustflame.2019.08.023
View details for Web of Science ID 000503319100022
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Why does adding a poor thermal conductor increase propagation rate in solid propellants?
APPLIED PHYSICS LETTERS
2019; 115 (11)
View details for DOI 10.1063/1.5113612
View details for Web of Science ID 000486002700007
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Direct Writing of a 90 wt% Particle Loading Nanothermite
ADVANCED MATERIALS
2019; 31 (23): e1806575
Abstract
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