Sputter-deposited nanostructure of polymeric fluorocarbon coatings on polyethylene terephthalate fiber

Composite fluorocarbon/ZnO films were deposited by R.F. sputtering using polytetrafluoroethylene (PTFE) and Zn target on polyethylene terephthalate (PET) substrate. Argon was used as the working gas and oxygen as reacting gas. The obtained films were characterized by AFM, UV-visible spectrophotometer, XPS and static contact angle measurements. The composite films are islands-structure composed of nanometer particles. Surface of the islands is not flat. The static contact angle of water is larger than 90°, possessing excellent hydrophobicity. The composite films exhibit multi-enhanced ultraviolet absorption due to π-π-conjugated molecular structure, surface morphology and nano-sized ZnO absorbing effect.

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“…On the other hand, the percentage of -CF 3 component exhibits a no monotonous variation. It is different from the references reported [4,5].…”

Section: Xps Analysiscontrasting

confidence: 96%

Rf Sputtering of Composite Fluorocarbon/ZnO Films and their Basic Properties

Zhang

Wang

2008

KEM

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“…( 1), it can also handle complex periodic corrugation geometries or non-flat meniscus by using more sophisticated numerical electromagnetic codes [38]. Finally, although the nanostructures referred in this study are quite small, many fabrication techniques are available [39][40][41][42][43][44][45][46][47][48]. The fabrication of such surfaces could validate the theory presented in this letter.…”

mentioning

confidence: 74%

Quantum Vacuum Photon Modes and Superhydrophobicity

et al. 2015

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Nanostructures are commonly used for developing superhydrophobic surfaces. However, available wetting theoretical models ignore the effect of vacuum photon-mode alteration on van der Waals forces and thus on hydrophobicity. Using first-principles calculations, we show that superhydrophibicity of nanostructured surfaces is dramatically enhanced by vacuum photon-mode tuning. As a case study, wetting contact angles of a water droplet above a polyethylene nanostructured surface are obtained from the interaction potential energy calculated as a function of the droplet-surface separation distance. This new approach could pave the way for the design of novel superhydrophobic coatings.

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“…Fluoropolymers, primarily polytetrafluoroethylene ͑PTFE͒, have demonstrated an ability to be sputter coated in the past. [1][2][3][4][5][6] Although several groups have studied the surface properties, such as contact angle, morphology, and chemical composition of sputtered fluoropolymer films, [2][3][4][5][6] there has been no analysis of the optical properties of these films. Nevertheless, one would anticipate that sputtered films should exhibit optical properties similar to the bulk sample.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of sputtered fluorinated ethylene propylene and its application to surface-plasmon resonance sensor fabrication

Keathley

Hastings

2008

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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The optical properties of sputtered fluorinated ethylene propylene (FEP) thin films (100–400nm) were analyzed using spectroscopic ellipsometry. Glass (similar to BK7) and silicon substrates were used, and deposition rates on glass were found to be on average 37% higher than on silicon. Refractive indices of the deposited films at 630nm ranged from 1.379 to 1.392 on glass and from 1.381 to 1.417 on Si, which roughly corresponds to a 4.3% increase when compared to the bulk material value of 1.335. By using the optical properties of the deposited FEP films, it was shown through modeling that they present a possible alternative when fabricating dual-mode surface-plasmon resonance sensors that can differentiate bulk and surface refractive index changes.

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Sputter-deposited nanostructure of polymeric fluorocarbon coatings on polyethylene terephthalate fiber

Cited by 5 publications

References 10 publications

Rf Sputtering of Composite Fluorocarbon/ZnO Films and their Basic Properties

Rf Sputtering of Composite Fluorocarbon/ZnO Films and their Basic Properties

Quantum Vacuum Photon Modes and Superhydrophobicity

Optical properties of sputtered fluorinated ethylene propylene and its application to surface-plasmon resonance sensor fabrication

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