Superhydrophobicity on transparent fluorinated ethylene propylene films with nano-protrusion morphology by Ar+O2 plasma etching: Study of the degradation in hydrophobicity after exposure to the environment
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Superhydrophobicity on transparent fluorinated ethylene propylene films with nano-protrusion morphology by Ar+O2 plasma etching: Study of the degradation in hydrophobicity after exposure to the environment
|
|
| Creator |
Gupta, Nitant
Kavya, M V Singh, Yogesh Jyothi, J Barshilia, Harish C |
|
| Subject |
Aeronautics (General)
General |
|
| Description |
Fluorinated ethylene propylene (FEP) films were made superhydrophobic by Ar + O2 plasma etching process. Field emission scanning electron microscopy and atomic force microscopy studies of the plasma-treated FEP samples detected the presence of uniformly distributed nano-protrusions exhibiting a low surface roughness necessary for maintaining the transparency of the samples. In fact, optical transmittance measurements showed an improvement in the transparency of FEP samples after plasma treatment. The X-ray photoelectron spectroscopic analysis showed the presence of –CF x –O–CF x – (x = 1, 2, or 3) linkages in both untreated and plasma-treated samples which explains the hydrophilic nature (contact angle below 90∘) of the untreated sample. Fourier transform infrared spectroscopy showed no changes in the bulk properties of the plasma-treated samples. Moreover, exposure to the environment caused the surfaces to lose their superhydrophobic property in an indefinite amount of time. This has been further studied through a water immersion experiment and explained through the wetting state transition from Cassie state to Wenzel state.
|
|
| Publisher |
American Institute of Physics
|
|
| Date |
2013
|
|
| Type |
Journal Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://nal-ir.nal.res.in/11833/1/ja483.pdf
Gupta, Nitant and Kavya, M V and Singh, Yogesh and Jyothi, J and Barshilia, Harish C (2013) Superhydrophobicity on transparent fluorinated ethylene propylene films with nano-protrusion morphology by Ar+O2 plasma etching: Study of the degradation in hydrophobicity after exposure to the environment. Journal of Applied Physics, 114 . p. 164307. ISSN 0021-8979 |
|
| Relation |
http://scitation.aip.org/content/aip/journal/jap/114/16/10.1063/1.4826897
http://nal-ir.nal.res.in/11833/ |
|