Superhydrophilic and antireflective La(OH)3/SiO2-nanorod/nanosphere films

You, Ji-Ho; Lee, Byung-Il; Lee, Jinho; Kim, Hongdoo; Byeon, Song‐Ho

doi:10.1016/j.jcis.2010.10.009

Cited by 22 publications

(11 citation statements)

References 40 publications

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“…The grassy surface showed improved readability due to the reduced reflection. In addition to the AR property, the wetting property is also affected by both the structured surface [18] and the oxygen plasma treatment. To confirm the antifogging performance, the SWS-integrated glass and the bare glass were exposed to steam at the same time.…”

Section: Resultsmentioning

confidence: 99%

Antireflective grassy surface on glass substrates with self-masked dry etching

et al. 2013

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Although recently developed bio-inspired nanostructures exhibit superior optic performance, their practical applications are limited due to cost issues. We present highly transparent glasses with grassy surface fabricated with self-masked dry etch process. Simultaneously generated nanoclusters during reactive ion etch process with simple gas mixture (i.e., CF4/O2) enables lithography-free, one-step nanostructure fabrication. The resulting grassy surfaces, composed of tapered subwavelength structures, exhibit antireflective (AR) properties in 300 to 1,800-nm wavelength ranges as well as improved hydrophilicity for antifogging. Rigorous coupled-wave analysis calculation provides design guidelines for AR surface on glass substrates.

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Section: Resultsmentioning

confidence: 99%

Antireflective grassy surface on glass substrates with self-masked dry etching

et al. 2013

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“…This is because proper surfactants modify the nanoparticles' interfacial properties by changing their surface charge and wettability and avoid the flocculation in nanoparticle dispersions. 159 Another example was the self-stacked lanthanum hydroxide [La(OH) 3 ] nanorods obtained from the hydrolysis of LaOCl, which was synthesized by dissolving La 2 O 3 in a concentrated HCl solution, 160 as shown in Fig. 9(c).…”

Section: Self-assemblymentioning

confidence: 99%

Characterisation of surface wettability based on nanoparticles

Gao

Yan

2012

Nanoscale

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Nanoparticles are becoming frequently used in the research area of creating functional surfaces because they can be more versatile than just making dimensions smaller. Particularly, a variety of nanoparticles have been applied for the construction of superhydrophobic and superhydrophilic surfaces with micro- and nano-scaled structures. As nanoparticles can also be fashioned and modified, their effects will be of great importance to the formed surface structures. In the present paper, we review the recent research progress in the utilization of nanoparticles to form extremely wettable/non-wettable surface structures and their influence on surface wettability. This report manifests an apparent inclination of nanoparticle structured surfaces using the multidisciplinary approaches, from the viewpoint of engineer/scientist. Therefore, the typical methodologies with regard to the use of nanoparticles, including the preparation and functionalisation processes, for the realization of surface wettabilities are discussed in this work. The discussions also represent some of the size-determined phenomena that are related to wettable/non-wettable surfaces. This Review thus provides an insight into the connection between nanoparticles and surface wettability.

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confidence: 99%

“…Over the past decade, many research groups − have worked to develop stable, effective antifogging (AF) coatings capable of handling a wide range of environmental challenges. Although many of these AF coatings perform satisfactorily in specifically defined antifogging challenges including such tests as the Erlenmeyer steam test and the cold-fog test, − there is no single quantitative test that provides all the information needed to assess the full optical performance of the coating. For example, even coatings that maintain high levels of light transmission during an aggressive fogging challenge, under specific conditions may produce significant image distortion due to excess or nonuniform water condensation (Supporting Information Figure S1a).…”

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confidence: 99%

Zwitter-Wettability and Antifogging Coatings with Frost-Resisting Capabilities

et al. 2013

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Antifogging coatings with hydrophilic or even superhydrophilic wetting behavior have received significant attention due to their ability to reduce light scattering by film-like condensation. However, under aggressive fogging conditions, these surfaces may exhibit frost formation or excess and nonuniform water condensation, which results in poor optical performance of the coating. In this paper, we show that a zwitter-wettable surface, a surface that has the ability to rapidly absorb molecular water from the environment while simultaneously appearing hydrophobic when probed with water droplets, can be prepared by using hydrogen-bonding-assisted layer-by-layer (LbL) assembly of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA). An additional step of functionalizing the nano-blended PVA/PAA multilayer with poly(ethylene glycol methyl ether) (PEG) segments produced a significantly enhanced antifog and frost-resistant behavior. The addition of the PEG segments was needed to further increase the nonfreezing water capacity of the multilayer film. The desirable high-optical quality of these thin films arises from the nanoscale control of the macromolecular complexation process that is afforded by the LbL processing scheme. An experimental protocol that not only allows for the exploration of a variety of aggressive antifogging challenges but also enables quantitative analysis of the antifogging performance via real-time monitoring of transmission levels as well as image distortion is also described.

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Superhydrophilic and antireflective La(OH)3/SiO2-nanorod/nanosphere films

Cited by 22 publications

References 40 publications

Antireflective grassy surface on glass substrates with self-masked dry etching

Antireflective grassy surface on glass substrates with self-masked dry etching

Characterisation of surface wettability based on nanoparticles

Zwitter-Wettability and Antifogging Coatings with Frost-Resisting Capabilities

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