Measuring the mass, density, and size of particles and cells using a suspended microchannel resonator

  title={Measuring the mass, density, and size of particles and cells using a suspended microchannel resonator},
  author={Michel Godin and Andrea K. Bryan and Thomas P. Burg and K. L. Babcock and Scott R. Manalis},
  journal={Applied Physics Letters},
We demonstrate the measurement of mass, density, and size of cells and nanoparticles using suspended microchannel resonators. The masses of individual particles are quantified as transient frequency shifts, while the particles transit a microfluidic channel embedded in the resonating cantilever. Mass histograms resulting from these data reveal the distribution of a population of heterogeneously sized particles. Particle density is inferred from measurements made in different carrier fluids… 

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