Design of multi-functional dual hole patterned carbon nanotube composites with superhydrophobicity and durability

Park, Sunghoon; Cho, Eun−Hyoung; Sohn, Jung Min; Theilmann, Paul; Chu, Kunmo; Lee, Sung‐Hee; Sohn, Yoonchul; Kim, Dongouk; Kim, Byung–Hoon

doi:10.1007/s12274-013-0316-8

Cited by 46 publications

(23 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…72 Second row fabrication by bottom up methods: (d) multilayer of spin-coated micro size PMMA spheres, crosslinked by silica, 80 (e) glass slide with dip-coated silica nanoparticles sintered with silica bridges, inset shows the size of the individual hollow silica nanoparticles, 81 and (f) hierarchical structure obtained from spray coated organosilane/attapulgite nanocomposite. 55 Third row, fabrication by combined methods: (g) micro scale dual hole patterned CNT composite, 88 (h) inverse monolayer nanostructure from colloidal assembly template and (i) machined steel surface with micro structures, inset shows ZnO nanohair grown on the surface. 145 76 electrospinning, 77 spin-coating, 78 dip-coating 79 etc.)…”

Section: Refmentioning

confidence: 99%

“…The ability to construct closed-cell structures is one important aspect. Park et al 88 fabricated a dual-hole patterned superhydrophobic surface made of a non-fluorinated composite of PDMS and carbon nanotubes (CNTs) using a pre-structured nickel stamp. The honeycomb-like structure was durable after 600 runs of a rubber tip sliding test at a load of 1.5 N. In contrast, a surface with micropillars composed of the same materials was severely damaged by the same process, and lost its superhydrophobicity.…”

Section: Refmentioning

confidence: 99%

See 1 more Smart Citation

Durable and scalable icephobic surfaces: similarities and distinctions from superhydrophobic surfaces

et al. 2016

View full text Add to dashboard Cite

Formation, adhesion, and accumulation of ice, snow, frost, glaze, rime, or their mixtures can cause severe problems for solar panels, wind turbines, aircrafts, heat pumps, power lines, telecommunication equipment, and submarines. These problems can decrease efficiency in power generation, increase energy consumption, result in mechanical and/or electrical failure, and generate safety hazards. To address these issues, the fundamentals of interfaces between liquids and surfaces at low temperatures have been extensively studied. This has lead to development of so called "icephobic" surfaces, which possess a number of overlapping, yet distinctive, characteristics from superhydrophobic surfaces. Less attention has been given to distinguishing differences between formation and adhesion of ice, snow, glaze, rime, and frost or to developing a clear definition for icephobic, or more correctly pagophobic, surfaces. In this review, we strive to clarify these differences and distinctions, while providing a comprehensive definition of icephobicity. We classify different canonical families of icephobic (pagophobic) surfaces providing a review of those with potential for scalable and robust development.

show abstract

Section: Refmentioning

confidence: 99%

Section: Refmentioning

confidence: 99%

Durable and scalable icephobic surfaces: similarities and distinctions from superhydrophobic surfaces

et al. 2016

View full text Add to dashboard Cite

show abstract

“…All these researches above offer the foundation at different levels. However, it still remains a challenging how to further design the surface with superhydrophobic or anti‐icing properties as surface in low temperature for a long time . Here, we present a series of surfaces combined with nanohairs and micropillar arrays, i.e., different micropillar arrays with the similar nanohairs, different nanohairs with the same micropillar arrays.…”

Section: Introductionmentioning

confidence: 99%

Excellent Anti‐Icing Abilities of Optimal Micropillar Arrays with Nanohairs

Shi

Lei

Guo

et al. 2015

Adv Materials Inter

View full text Add to dashboard Cite

of adhesion required to remove a liquid water drop. Poulikakos and co-workers [ 7 ] investigated surfaces with nanometerscale roughness and higher wettability, which display long freezing delays, one order of magnitude longer than typical superhydrophobic surfaces with larger hierarchical roughness and low wettability. And Poulikakos also established [ 8 ] that evaporative cooling of the supercooled liquid could engender ice crystallization by homogeneous nucleation at the droplet-free surface as opposed to the expected heterogeneous nucleation at the substrate. Hirayama and co-workers [ 9 ] investigated the icephobic properties of different coatings, e.g., hydrophilic and hydrophobic coatings, sol-gel based coatings containing fl uorinated compounds and viscoelastic rubbers. Very low adhesion values were obtained in the case of coatings consisting of viscoelastic elastomers. Yarin and co-workers [ 10 ] reported a systematic study of drop impacts of polar and nonpolar liquids onto different electrospun nanofi ber membranes with an increasing degree of hydrophobicity. It is found that for any liquid/fi ber pair there exists a threshold impact velocity (≈1.5-3 m s −1 ) above which water penetrates membranes irrespective of their hydrophobicity. Yarin and co-workers [ 11 ] studied peculiarities of drop impact onto electrospun polymer (polyacrylonitrile, PAN) nanofi ber mats. It is demonstrated that drop impacts on electrospun nanofi ber mats almost instantaneously result in spread-out wetted spots over the surface. All these researches above offer the foundation at different levels. However, it still remains a challenging how to further design the surface with superhydrophobic or anti-icing properties as surface in low temperature for a long time. [12][13][14][15][16][17] Here, we present a series of surfaces combined with nanohairs and micropillar arrays, i.e., different micropillar arrays with the similar nanohairs, different nanohairs with the same micropillar arrays. Especially, we reveal that the optimal surface with excellent abilities for anti-icing or antifogging is related with cooperation between superhydrophobic nanohairs and micropillar arrays, in addition to the stability of less liquid-solid fractions at low temperature below zero. This study will provide an insight into the design of structure size on micro-nanostructured surfaces for anti-icing/fogging ability effectively, with great significance that can be extended into the applications in some surfaces of systems, e.g., microdevices worked in cold or humid environment.Anti-icing abilities are achieved on surfaces of micropillar arrays with nanohairs that are fabricated by methods of soft replication and crystal growth, i.e., different micropillar arrays with the similar nanohairs, different nanohairs with the same micropillar arrays. It is demonstrated that an optimal micropillar array with nanohairs contributes an excellent anti-icing or antifogging property at low temperature below zero. As a result, the longest icing delay time is achieved effe...

show abstract

“…and designed numerous synthetic superhydrophobic surfaces. Metals [5][6][7], copolymers [8,9], nanoparticles [10,11], nanotubes [12,13], nanorods [14] and nanofibers [15,16] were employed to create air-trapping micro-and nanostructures. The involved methods include atom-transfer radical polymerization, electrodeposition, sol-gel, etching, lithography etc.…”

Section: Introductionmentioning

confidence: 99%

When superhydrophobic coatings are icephobic: Role of surface topology

Silberschmidt

et al. 2019

Surface and Coatings Technology

View full text Add to dashboard Cite

Among different types of anti-icing coatings, superhydrophobic coatings have attracted considerable attention due to their water repellency and low heat-transfer rate. However, condensation on superhydrophobic surfaces at low temperatures usually causes an increase in ice adhesion because of the induced wetting of micro-and nanostructures. By tuning the weight ratio of surface-modified nanoparticles to unmodified ones, five superhydrophobic coatings with different structural features at the microscale were developed. Ice-adhesion strength and ice-nucleation temperature were studied, together with the effect of moisture condensation on ice adhesion. It was found that the ice-adhesion strength and icing temperature of these coatings do not necessarily follow the same order among these surfaces because of different mechanisms involved. Surface roughness is inadequate to describe the necessary surface features that critically affect the anti-icing behavior of the coatings. Detailed topology/geometry has to be considered when designing icephobic coatings. Superhydrophobic coatings can be adopted for icephobic applications once the surface topology is carefully designed.

show abstract

Design of multi-functional dual hole patterned carbon nanotube composites with superhydrophobicity and durability

Cited by 46 publications

References 33 publications

Durable and scalable icephobic surfaces: similarities and distinctions from superhydrophobic surfaces

Durable and scalable icephobic surfaces: similarities and distinctions from superhydrophobic surfaces

Excellent Anti‐Icing Abilities of Optimal Micropillar Arrays with Nanohairs

When superhydrophobic coatings are icephobic: Role of surface topology

Contact Info

Product

Resources

About