Journal article

Inertial and viscous flywheel sensing of nanoparticles

Georgios Katsikis, Jesse F Collis, Scott M Knudsen, Vincent Agache, John E Sader, Scott R Manalis



Rotational dynamics often challenge physical intuition while enabling unique realizations, from the rotor of a gyroscope that maintains its orientation regardless of the outer gimbals, to a tennis racket that rotates around its handle when tossed face-up in the air. In the context of inertial sensing, which can measure mass with atomic precision, rotational dynamics are normally considered a complication hindering measurement interpretation. Here, we exploit the rotational dynamics of a microfluidic device to develop a modality in inertial sensing. Combining theory with experiments, we show that this modality measures the volume of a rigid particle while normally being insensitive to its den..

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Awarded by Australian Research Council Centre of Excellence in Exciton Science

Awarded by FP7 Marie Skodowska-Curie COFUND program

Funding Acknowledgements

We thank Iris E. Hwang and Joon H. Kang for helpful comments on the manuscript, and Dimitra Vardalaki for valuable insights into designing the figures. S.R.M. and G.K. acknowledge support from the Virginia and D.K. Ludwig Fund for Cancer Research. J.F.C. and J.E.S. acknowledge support from the Australian Research Council Centre of Excellence in Exciton Science (CE170100026) and the Australian Research Council Grants Scheme. V.A. acknowledges support from LETI Carnot Institute EVEREST project for fabricating the 0.7x1.0 device as well as the CEA-Enhanced Eurotalents program, cofunded by FP7 Marie Skodowska-Curie COFUND program (Grant Agreement 600382) and the Fulbright fellowship for the France National Researcher program (project title "EASY").