Table 2

Values of diffusion coefficients and surface tension parameters from analytical simulation on each position-time curve of all the microfluidic flow

Surface modification

Surface structure

Diffusion coefficient, D (ρm2 s-1)

γsa - γsl

N/m


Air DBD processed

Flat surface

66153420

0.004330

100 μm pillar

38677500

0.002531

200 μm pillar

23777420

0.001556

300 μm pillar

12537020

0.000820

Nitrogen plasma treated

Flat surface

45091690

0.002951

100 μm pillar

20411460

0.001336

200 μm pillar

12500060

0.000818

300 μm pillar

11718310

0.000767

Control PMMA

Flat surface

6337320

0.000414

100 μm pillar

3219800

0.000210

200 μm pillar

2142380

0.000140

300 μm pillar

1477070

0.000096

Undoped DLC coated

Flat surface

10878150

0.000712

100 μm pillar

3993380

0.000261

200 μm pillar

2983690

0.000195

300 μm pillar

1782760

0.000116

Si-doped DLC coated

Flat surface

4044020

0.002646

100 μm pillar

2058300

0.000134

200 μm pillar

1449660

0.000094

300 μm pillar

1175890

0.000076


Mukhopadhyay et al. Nanoscale Research Letters 2011 6:411   doi:10.1186/1556-276X-6-411

Open Data