Table 1 Characterization of the PDMS layer.

From: A moving contact line as a rheometer for nanometric interfacial layers

MW (g mol−1)

N

τ (ns)

e (±0.5 nm)

θeq (°)

H (°)

5,970

79

57

2.5

15.72

0.17

9,430

126

142

4.0

15.13

≤0.07

17,250

232

476

5.0

12.17

0.32

  1. MW, molecular weight; PDMS, polydimethylsiloxane.
  2. The MW, polymerization index N and Rouse relaxation time τ for a series of PDMS oils. The thickness e of the resulting pseudo-brush layer is measured by ellipsometry. The contact angle hysteresis H, defined as the minimum difference between the advancing and receding contact angles, and the equilibrium contact angle θeq, estimated as the mid-point between these angles, are found as shown in Fig. 2b.
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