超疏水表面制备与应用.ppt

Super-hydrophobic Surface
Backg
round, Methods and Applications
Reporter: Dong Xu
Partnerships: . Deng, Q. Lin, . Lin, . Liu, / Shang, . Su, 0. Y. Sun, . Wang, . Xiao, D. Xu, . Xu, J. Zou
Content
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Background
Synthesis
Applications
Content
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B
ackground
Synthesis
Applications
What's Super-hydrophobic Surface
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Super-hydrophobic phenomena: It's first observed in the nature
Self-cleaning
2 Plants: lotus candock
silver ragwort and
so on never get dirt
Insects
anti-fogging properties
a mosquitoes able to walk
on water
Reference Darmanin T, et al. Advanced Materials, 2013, 25(10: 1378-1394
Whats Super-hydrophobic Surface
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Definition: The contact angle between the surface and the water droplet is bigger
than150°
Structural featu
any d=5-9 um papillae in
random distribution
The
branch-like
hierarchical nar
+ nm on every papilla
Nanostructu
the top of the
micro-papillae is very useful
Diameter (dium
uper-hydrophobie
Reference: Feng l, et al. Advanced materials, 2002, 14(24): 1857-1860
Overview of fabrication methods
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Super-hydrophobic surface is a kind of biomimetic materials.
The key point is going to obtain the "nanostructures")
Modify a rough surface by materials with low
surface free energy
Two Main
clues
Create a rough structure on a hydrophobic
surface(CA>90°)
v Template method of printing:
V Vapor induced phase separation(VIPS)
microwave plasma-enhanced chemical vapor deposition(MWPE-CvD)
√ anodic oxidization;
Reference: Lin Feng, et al. Advanced Material, 2002, 14: 1857-7860
A New classification of fabrication methods
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A new classification according to our investigation.
Creating a rough structure on a hydrophobic surface is most used)
Create a rough structure on a hydrophobic surface(CA>g0
Template method of
VIPS
Laser ablation and
printing
MWPE-CVD
electrodeposition
Ultraviolet
Lithography;
electroch