Micro-ratcheted surfaces for a heat engine biomass conveyor

Christoph Krumm, Saurabh Maduskar, Alex D. Paulsen, Anthony D. Anderson, Nicholas L. Barberio, Jonathan N. Damen, Connor A. Beach, Satish Kumar, Paul J. Dauenhauer

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Cellulosic particles on surfaces consisting of microstructured, asymmetric ratchets (100 by 400 μm) were observed to spontaneously move orthogonal to ratchet wells above the cellulose reactive Leidenfrost temperature (>750 °C). Evaluation of the accelerating particles supported the mechanism of propelling viscous forces (50-200 nN) from rectified pyrolysis vapors, thus providing the first example of biomass conveyors with no moving parts driven by high temperature for biofuel reactors.

Original languageEnglish (US)
Pages (from-to)1645-1649
Number of pages5
JournalEnergy and Environmental Science
Issue number5
StatePublished - May 2016

Bibliographical note

Funding Information:
Financial support was provided from the Catalysis Center for Energy Innovation, a U.S. Department of Energy - Energy Frontier Research Center under Award DE-SC0001004. Funding supported researchers N. L. B., P. J. D. and the cost of materials.

Publisher Copyright:
© 2016 The Royal Society of Chemistry.

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