Controlled droplet transport on a gradient adhesion surface

Feng, Shile; Wang, Sijie; Liu, Chengcheng; Zheng, Yongmei; Hou, Yongping

doi:10.1039/c5cc00467e

Cited by 21 publications

(13 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This limitation impedes the application of water transport in a wide range of practical settings. Clearly, introducing of external energy, such as light, [ 5 ] temperature, [ 6 ] magnetic field, [ 7 ] electric field, [ 8 ] and vibration [ 9 ] can break the limitation. However, complexity of manufacturing technologies and waste of energy restrict the applications of such design strategies.…”

Section: Introductionmentioning

confidence: 99%

Continuous Directional Water Transport on Integrating Tapered Surfaces

Feng

Qian-Qian

Xing

et al. 2020

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

years, the transport distance is always limited by the short gradient length: larger gradient driving force and larger gradient length are contradictory. This limitation impedes the application of water transport in a wide range of practical settings. Clearly, introducing of external energy, such as light, [5] temperature, [6] magnetic field, [7] electric field, [8] and vibration [9] can break the limitation. However, complexity of manufacturing technologies and waste of energy restrict the applications of such design strategies. Therefore, it is essential to develop a simple method to achieve continuous directional and long-range water transport without extraneous energy.Here, we report a continuous directional and long-range transport of fog droplets on integrating tapered surface (ITS) inspired by spider silk and butterfly wing. [2,10] Fog droplets first transport on single tapered structure from tip to bottom propelled by Laplace pressure and form liquid film at the joint. Then, a new phenomenon occurs that the liquid film switches periodically between convex-continuous and concaveintermittent due to synergism of Laplace pressure gradient and wetting gradient, which promotes the rapid surface reconstruction and fog droplet collection. The combination of continuous, directional, long-range transport of fog droplets and rapid surface reconstruction facilitates highly effective water harvesting task. We envision that this basic design strategy can be applied to artificial fluid transport systems, water-collecting devices and systems, etc.

show abstract

Section: Introductionmentioning

confidence: 99%

Continuous Directional Water Transport on Integrating Tapered Surfaces

Feng

Qian-Qian

Xing

et al. 2020

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

show abstract

“…To date, various methods have been developed for the fabrication of extreme wettability patterned surfaces, such as printing technology [21], chemical vapor deposition [22], ultraviolet irradiation [23][24], plasma modification [25][26][27], etc. Lai et al [28] fabricated high-accuracy superhydrophobic patterns on a superhydrophobic TiO 2 nanotube array (TNA) surface by photocatalytic lithography with a two-step process and can easily control the dimension and morphology of the patterns.…”

Section: Introductionmentioning

confidence: 99%

A universal method to create surface patterns with extreme wettability on metal substrates

Sun

Chen

Song

et al. 2019

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Extreme wettability surfaces have attracted more and more attention due to their practical applications, however, few reports have shown a universal method to create surface patterns with extreme wettability on a variety of metals. In this paper, a mask-assisted dual-chemical-processing approach without special modification is used to prepare the extreme wettability patterns on various metal substrates. Fabrication of superhydrophilic-superhydrophobic patterns on five kinds of metal substrates of Al, Ti, steel, Zn and Mg alloy proved the versatility of this method. The extreme wettability patterns prepared by this method were applied to fog harvest and we found the big differences in the collection efficiency of various metal surface patterns.

show abstract

“…Multi-scale heterogeneous surfaces and hump-on-string fibers are two of the most common ways of collecting water from the environment [1], such as spider silks [2], cactus spines [3], and even the common bristlegrass [4]. Astonished by the high water collection efficiency of these two structures, a variety of bio-inspired artificial surfaces with multi-scale heterogeneous surfaces and manmade hump-on-string fibers are fabricated and used in collecting water [5,6,7,8], building facilities with super wettability [9,10,11], as well as fabricating phase separation membranes [12]. However, little attention has been paid to the combination of the heterogeneous structures and the hump-on-string fibers.…”

Section: Introductionmentioning

confidence: 99%

Wet-Induced Fabrication of Heterogeneous Hump-on-String Fibers

Song

Zheng

2015

Materials

Self Cite

View full text Add to dashboard Cite

Inspired by the high adhesiveness of the electrospun fiber, we propose a method to fabricate multi-scale heterogeneous hump-on-string fiber via the adsorption of nanoparticles, the NPCTi which is the hydrolysate of titanium tetrachloride (TiCl4) and the nanoparticles containing Al (NPCAl) which is produced by the hydrolysis of Trimethylaluminium (TMA, Al(CH3)3). The water collection efficiency of the fibers can be easily controlled via changing not only the size of the beads but also the ratio of the Ti and Al. In addition, we introduce a computational fluid dynamics (CFD) simulation to show the pressure distribution of on the surface of the fibers, which gives another explanation regarding the high water collection efficiency.

show abstract

Controlled droplet transport on a gradient adhesion surface

Cited by 21 publications

References 37 publications

Continuous Directional Water Transport on Integrating Tapered Surfaces

Continuous Directional Water Transport on Integrating Tapered Surfaces

A universal method to create surface patterns with extreme wettability on metal substrates

Wet-Induced Fabrication of Heterogeneous Hump-on-String Fibers

Contact Info

Product

Resources

About