Optoelectrowettability conversion on superhydrophobic CdS QDs sensitized TiO2 nanotubes

Fan, Xian Guang; Li, Xian; Tian, Dongliang; Zhai, Jin; Jiang, Lei

doi:10.1016/j.jcis.2011.09.035

Cited by 18 publications

(15 citation statements)

References 38 publications

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“…The dots reduced photo-decomposition of phthalocyanine dye and an adjustable direction of light irradiation was also achieved. [103] To further improve the mechanical strength and maneuverability, a TiO 2 /AAO nanopore array film was used in the patterned wetting process for a well-knit structure. [104] Other organic or polymer materials with special wetting structures, such as an ordered honeycomb structure, can also achieve similar results.…”

Section: Photoelectric Cooperative Liquid Patterningmentioning

confidence: 99%

“…[102] Copyright 2009, Wiley-VCH. e) Nanorods (I: reproduced with permission, [102] Copyright 2009, Wiley-VCH), nanotubes (II: reproduced with permission, [103] Copyright 2012, Elsevier), and nanopores (III: reproduced with permission, [104] Copyright 2011, Wiley-VCH) array films in the designed reprography machine (schematic: reproduced with permission. [102] Copyright 2009, Wiley-VCH).…”

Section: Magnetic-field-tunable Surface Adhesionmentioning

confidence: 99%

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External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

Zhang

et al. 2017

Advanced Materials

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102

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External‐field‐responsive liquid transport has received extensive research interest owing to its important applications in microfluidic devices, biological medical, liquid printing, separation, and so forth. To realize different levels of liquid transport on surfaces, the balance of the dynamic competing processes of gradient wetting and dewetting should be controlled to achieve good directionality, confined range, and selectivity of liquid wetting. Here, the recent progress in external‐field‐induced gradient wetting is summarized for controllable liquid transport from movement on the surface to penetration into the surface, particularly for liquid motion on, patterned wetting into, and permeation through films on superwetting surfaces with external field cooperation (e.g., light, electric fields, magnetic fields, temperature, pH, gas, solvent, and their combinations). The selected topics of external‐field‐induced liquid transport on the different levels of surfaces include directional liquid motion on the surface based on the wettability gradient under an external field, partial entry of a liquid into the surface to achieve patterned surface wettability for printing, and liquid‐selective permeation of the film for separation. The future prospects of external‐field‐responsive liquid transport are also discussed.

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Section: Photoelectric Cooperative Liquid Patterningmentioning

confidence: 99%

Section: Magnetic-field-tunable Surface Adhesionmentioning

confidence: 99%

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

Zhang

et al. 2017

Advanced Materials

Self Cite

102

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“…Moreover, they also reported that CdS quantum dots photosensitized TiO 2 nanotube arrays would improve photosensitivity in the visible light regions for more effi cient offset printing. [ 122 ] On the basis of photolithography patterning technique on TiO 2 structures, we applied the as-prepared 2D superhydrophilic/hydrophobic micropattern to guide the selective adhesion of cell ( Figure 17 a-c), deposition of bioactive CaP layer ( Figure 17 d-f) and further induce the cell attachment onto the CaP-TiO 2 nanotube fi lm to generate 3D pattern ( Figure 17 g-i). [ 123 ] It could be clearly seen that CaP nanobelts were preferred to be deposited within the superhydrophilic regions to form CaP pattern while the superhydrophobic areas were kept intact.…”

Section: Applications Of the Patterned Superhydrophobicity Of Tio 2 -mentioning

confidence: 99%

Recent Advances in TiO₂‐Based Nanostructured Surfaces with Controllable Wettability and Adhesion

Lai

Huang

Cui

et al. 2015

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Bioinspired surfaces with special wettability and adhesion have attracted great interest in both fundamental research and industry applications. Various kinds of special wetting surfaces have been constructed by adjusting the topographical structure and chemical composition. Here, recent progress of the artificial superhydrophobic surfaces with high contrast in solid/liquid adhesion has been reviewed, with a focus on the bioinspired construction and applications of one-dimensional (1D) TiO2-based surfaces. In addition, the significant applications related to artificial super-wetting/antiwetting TiO2-based structure surfaces with controllable adhesion are summarized, e.g., self-cleaning, friction reduction, anti-fogging/icing, microfluidic manipulation, fog/water collection, oil/water separation, anti-bioadhesion, and micro-templates for patterning. Finally, the current challenges and future prospects of this renascent and rapidly developing field, especially with regard to 1D TiO2-based surfaces with special wettability and adhesion, are proposed and discussed.

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“…However, the wettability of TiO 2 has not been fully studied, especially its wettability conversion [17]. Few of publications on wettability conversion of TiO 2 films have been reported, in contrast to the huge number of literatures on TiO 2 films [26,27]. Herein, we report a method for preparation of a superhydrophobic TiO 2 film, which consists of fabricating a micro-nanostructured TiO 2 film from TiO 2 precursor solution containing TiO 2 nanoparticles and modifying the resultant film with fluoroalkylsilane molecules.…”

Section: mentioning

confidence: 99%

Effect of surface morphology on wettability conversion

Kong

Wang

et al. 2016

J Adv Ceram

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Abstract:A hierarchical structural surface of TiO 2 film with reversibly light-switchable wettability between superhydrophobicity and superhydrophilicity on metal substrate was fabricated through simply dip-coating method from TiO 2 precursor solution containing TiO 2 nanoparticles with the average diameter 25 nm (P25), followed by heat-treatment and modification with fluoroalkylsilane (FAS) molecules. The morphology, phase and crystallographic structure, and chemical composite of the as-prepared TiO 2 film were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The wettability of TiO 2 film was characterized by a drop shape analyzer. The water contact angle of superhydrophobic TiO 2 film was up to 165.6°. Under UV irradiation, the water contact angle decreased and the superhydrophobic TiO 2 film became superhydrophilic because of hydroxyl groups absorption on the TiO 2 surface. Meanwhile, the surface morphology of TiO 2 film, which resulted from the TiO 2 nanoparticles added in TiO 2 precursor solution, had a significant effect on the wettability conversion of TiO 2 film and enhanced the switch from hydrophobicity to hydrophilicity. The wettability could be reversibly switched between superhydrophobicity and superhydrophilicity via alternation of UV exposure and dark storage.

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Optoelectrowettability conversion on superhydrophobic CdS QDs sensitized TiO2 nanotubes

Cited by 18 publications

References 38 publications

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

Recent Advances in TiO₂‐Based Nanostructured Surfaces with Controllable Wettability and Adhesion

Effect of surface morphology on wettability conversion

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Optoelectrowettability conversion on superhydrophobic CdS QDs sensitized TiO2 nanotubes

Cited by 18 publications

References 38 publications

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

Recent Advances in TiO2‐Based Nanostructured Surfaces with Controllable Wettability and Adhesion

Effect of surface morphology on wettability conversion

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Recent Advances in TiO₂‐Based Nanostructured Surfaces with Controllable Wettability and Adhesion