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.
Bibliographical noteFunding 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.