contact angle meter SL200K for measuring contact angle of single hydrophobic fiber and hydrophilic fiber. We find out three methods for measuring fiber with hydrophilic and hydrophobic surface. And for super-hydrophobic surface fiber, it is very difficult for transferring drop to fiber surface. We used needle with OD 0.2mm for transferring drop.
And we found out that PTFE needle with OD about 0.5mm or PL pump was also suitble for transferring drop to super-hydrophobic surface.
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