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

From: Soft electrostatic trapping in nanofluidics

Device design

Device geometry h c, h p (nm)

Trap diameter w p (nm)

Particle diameter d (nm)

Diffusion coefficient D (μm2 s−1)

Radial stiffness k r (fN nm−1)

Relaxation time τ R (ms)

G 1

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

G 2

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.
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