Table 1: Relaxation times τR for 60, 80, and 100 nm gold particles in different trap geometries

From: Soft electrostatic trapping in nanofluidics

Device design Device geometry hc, hp (nm) Trap diameter wp (nm) Particle diameter d (nm) Diffusion coefficient D (μm2 s−1) Radial stiffness kr (fN nm−1) Relaxation time τR (ms)
G1 210, 70 500 60 6.38 0.18 3.5
    500 80 5.23 0.55 1.4
    500 100 4.17 0.64 1.5
G2 160, 100 250 60 6.38 0.81 0.8
    250 80 5.23 2.61 0.3
    500 60 6.38 0.22 2.9
  1. The diffusion coefficients D were measured using a dynamic light scattering system.