Size-dependent same-material tribocharging in insulating grains

S.R. Waitukaitis, V. Lee, J. Pierson, S. Forman, H. Jaeger, APS Physics, Physical Review Letters 112 (2014).


Journal Article | Published | English
Author
Waitukaitis, Scott RIST Austria ; Lee, Victor; Pierson, James; Forman, Steven; Jaeger, Heinrich
Abstract
Observations of flowing granular matter have suggested that same-material tribocharging depends on particle size, typically rendering large grains positive and small ones negative. Models assuming the transfer of trapped electrons can account for this trend, but have not been validated. Tracking individual grains in an electric field, we show quantitatively that charge is transferred based on size between materially identical grains. However, the surface density of trapped electrons, measured independently by thermoluminescence techniques, is orders of magnitude too small to account for the scale of charge transferred. This reveals that trapped electrons are not a necessary ingredient for same-material tribocharging.
Publishing Year
Date Published
2014-05-30
Journal Title
APS Physics, Physical Review Letters
Acknowledgement
This work was supported by the NSF through DMR-1309611. Access to the shared experimental facilities provided by the NSF-supported Chicago MRSEC (DMR-0820054) is gratefully acknowledged. S. L. F. and J. L. P. acknowledge funding from UIC NSF Grants No. 0850830 and No. 0602308. S. R. W. acknowledges support from a University of Chicago Millikan Fellowship and from Mrs. Joan Winstein through the Winstein Prize for Instrumentation.
Volume
112
Issue
21
Article Number
218001
IST-REx-ID
119

Cite this

Waitukaitis SR, Lee V, Pierson J, Forman S, Jaeger H. Size-dependent same-material tribocharging in insulating grains. APS Physics, Physical Review Letters. 2014;112(21). doi:10.1103/PhysRevLett.112.218001
Waitukaitis, S. R., Lee, V., Pierson, J., Forman, S., & Jaeger, H. (2014). Size-dependent same-material tribocharging in insulating grains. APS Physics, Physical Review Letters, 112(21). https://doi.org/10.1103/PhysRevLett.112.218001
Waitukaitis, Scott R, Victor Lee, James Pierson, Steven Forman, and Heinrich Jaeger. “Size-Dependent Same-Material Tribocharging in Insulating Grains.” APS Physics, Physical Review Letters 112, no. 21 (2014). https://doi.org/10.1103/PhysRevLett.112.218001.
S. R. Waitukaitis, V. Lee, J. Pierson, S. Forman, and H. Jaeger, “Size-dependent same-material tribocharging in insulating grains,” APS Physics, Physical Review Letters, vol. 112, no. 21, 2014.
Waitukaitis SR, Lee V, Pierson J, Forman S, Jaeger H. 2014. Size-dependent same-material tribocharging in insulating grains. APS Physics, Physical Review Letters. 112(21), 218001.
Waitukaitis, Scott R., et al. “Size-Dependent Same-Material Tribocharging in Insulating Grains.” APS Physics, Physical Review Letters, vol. 112, no. 21, 218001, American Physical Society, 2014, doi:10.1103/PhysRevLett.112.218001.
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