Skip to main content
. Author manuscript; available in PMC: 2013 Sep 23.
Published in final edited form as: Phys Life Rev. 2012 May 18;9(2):125–158. doi: 10.1016/j.plrev.2012.05.010

Table 1.

Estimated hydrodynamic radii and Stokes diffusion coefficients of aqueous species used in Coulter counters and nanopore sensors. Typical experimental concentrations are also listed.

Species RH (nm) D (μm2s–1)a Typical conc. (M)
Red blood cell 3500 0.06 ~ 10–14
20-bp DNA fragment 3 140 10–9–10–6
K+,Cl– 0.14 1600 0.1–1
a

Calculated from D = kBT/6πηRH using T = 298 K and η = 0.001 Pa s.