Constructing robust 3-dimensionally conformal micropatterns: vulcanization of honeycomb structured polymeric films

Li, Lei; Zhong, Yawen; Gong, Jinlong; Li, Jian; Chen, Caikang; Zeng, Birong; Ma, Zhi

doi:10.1039/c0sm00809e

Cited by 48 publications

(40 citation statements)

References 60 publications

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“…However, we demonstrated that neither the molecular topography nor the T g of polymers was the key factor in forming uniform BFAs on non‐planar substrates during a static BF process 18a. Either linear polymers PS or block copolymer, polystyrene‐ block ‐poly(acrylic acid) (PS‐ b ‐PAA) or commercially available triblock copolymer polystyrene‐ block ‐polyisoprene‐ block ‐polystyrene (SIS), perfectly replicated non‐planar substrates with a static BF process 18a,f. To explain how a brittle polymer film can contour the curved structures, a hypothesis involving polymer plasticization by solvent during BF process has been proposed.…”

Section: Unconventional Fabrication Of Bfasmentioning

confidence: 94%

“…Particularly, the observation of BFAs on non‐planar substrates with vertical walls is helpful for the mechanism investigation (Figure 4 c–f). 18a,f Different from flat substrate, a capillary force between the descending solution surface and the vertical wall is induced owing to the decrease in the amount of solution as the solvent evaporates. Consequently, the BFAs floating on the solution surface will be pulled towards the vertical wall and cover it.…”

Section: Unconventional Fabrication Of Bfasmentioning

confidence: 99%

See 1 more Smart Citation

Breath Figure Arrays: Unconventional Fabrications, Functionalizations, and Applications

Bai¹,

Du²,

Zhang³

et al. 2013

Angew Chem Int Ed

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168

142

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A breath figure (BF) is the water droplet array that forms when moisture comes in contact with a cold substrate. This water droplet array has been widely utilized in the past two decades as a versatile soft template for the fabrication of polymeric porous films. Accordingly, the ordered pores on the polymer films formed with such a method are named a breath figure array (BFA).The BF templating technique is undergoing rapid development. Several unconventional BF processes have been established to prepare porous films with unique morphologies or primary materials, and various newly developed functionalization techniques have significantly improved the performance of polymeric films with BFA, leading to novel applications, including templates, biosensors, and separation membranes. These recent achievements will be described in this Minireview.

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Section: Unconventional Fabrication Of Bfasmentioning

confidence: 94%

Section: Unconventional Fabrication Of Bfasmentioning

confidence: 99%

Breath Figure Arrays: Unconventional Fabrications, Functionalizations, and Applications

Bai¹,

Du²,

Zhang³

et al. 2013

Angew Chem Int Ed

Self Cite

168

142

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“…By simply peeling off the top layer of the HC film, pincushion‐like structures (PC) can also be obtained . This method has several advantages compared with traditional microfabrication methods, including easy fabrication on meter scale areas, high controllability of pore size from the sub‐micrometer to micrometer‐scale, fabrication on nonflat surfaces, and a wide variety of hydrophobic and hydrophilic polymers that are suitable for the fabrication method.…”

Section: Introductionmentioning

confidence: 99%

On‐Demand Liquid Transportation Using Bioinspired Omniphobic Lubricated Surfaces Based on Self‐Organized Honeycomb and Pincushion Films

Kamei

Yabu

2015

Adv Funct Materials

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4195wileyonlinelibrary.com infused surface requires a fl uid/fl uid interface between the lubricant and the immiscible liquid to be repelled. For a stable repellency, the interfacial energy of the lubricant layer on the surface has to be smaller than that of the liquid to be repelled. Furthermore, the microstructures are required to retain the lubricant through capillary force. Superomniphobic SLIPS can be obtained by the infusion of the microstructures with fl uorinated lubricants, which are immiscible with most liquids. Because the interfacial tension between the fl uorinated lubricant and the surface must be reduced to maintain this layer of lubricant stably, fl uorinated surfaces are also required. Additionally, microstructures on the surface must be on a micrometer scale to match the capillary length of the fl uorinated lubricant. Controlling and inducing the movement of liquid spatiotemporally on a surface has attracted interest from science and industry, because it paves the way for novel microfl uidic systems, [ 13,14 ] and liquid harvesting, transportation, and manipulation technologies. [15][16][17][18][19][20] It has been reported that by changing the repellency of a surface, the movement of liquids on the surface can be allowed or stopped. In conventional techniques, the movement of a liquid on a surface is mainly controlled by manipulating the interfacial energy between the surface and the liquid [ 21 ] through changing the chemical properties of a surface via chemical, [ 22 ] electrochemical, [ 23,24 ] or photochemical [ 25 ] methods. However, the surface structure is also an important factor that affects the wetting behavior of a liquid on a surface. The repellency toward liquids can be tuned by controlling the surface structure, and thus the movement of liquid on a surface can be programmed and controlled.The next generation of SLIPS is expected to have tunable, programmed repellency for an on-demand transportation and manipulation of liquid along their surfaces. Two strategies can be adapted to create a system for effective spatio-temporal ondemand transport of liquid. The fi rst strategy is to introduce a nonrepellent surface spatially in a mainly liquid-repellent surface. For example, in surface tension confi ned microfl uidics, [ 26 ] a nonrepellent pattern area in a repellent plane works as an anchoring point for the liquid and restricts its movement. The second strategy is to control the movement of the liquid temporally by changing the microstructure via an external stimulus. Therefore, a fabrication method for a microstructured surface In this work, on-demand control of liquids is realized by using elastic, patterned omniphobic surfaces. This paves the way for novel microfl uidics, as well as liquid harvesting, transportation, and manipulation technologies. Inspired by the lubricating properties of pitcher plants, microstructured 1,2-polybutadiene honeycomb and pincushion fi lms obtained by self-organization are fl uorinated by the ene-thiol reaction and infused with fl uorinated lubricant...

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“…Membranes with ordered porous structures are widely used in fabricating photonic crystals, diodes, superhydrophobic surfaces, man‐made tissues, microlens arrays, filtration membranes, sensors, catalyst supports, and templates . During the last decade, there has been extensive development of lithographic and template techniques for the fabrication of ordered porous films .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of highly ordered porous membranes of cellulose triacetate on ice substrates using breath figure method

Cong

et al. 2015

J Polym Sci B Polym Phys

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Highly ordered porous membranes of cellulose triacetate (CTA) were prepared successfully on ice substrates using breath figure method. The pore size and structure of the membrane were modulated by changing CTA concentrations and substrate materials. As the CTA concentration in the casting solution increased, the pore size in the formed membrane decreased. The regularity of the membrane cast on the ice substrate was much better than that of the membrane cast on glass substrate, because the low temperature of ice substrate slowed down the evaporation rate of organic solvent, which offered enough time for condensed water droplets to selforganize into an ordered array dispersed in the polymer solution before their coagulation. The ordered porous CTA membrane was not only used for microfiltration, but also used for fabrication of functional microstructures. V C 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 552-558

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Constructing robust 3-dimensionally conformal micropatterns: vulcanization of honeycomb structured polymeric films

Cited by 48 publications

References 60 publications

Breath Figure Arrays: Unconventional Fabrications, Functionalizations, and Applications

Breath Figure Arrays: Unconventional Fabrications, Functionalizations, and Applications

On‐Demand Liquid Transportation Using Bioinspired Omniphobic Lubricated Surfaces Based on Self‐Organized Honeycomb and Pincushion Films

Fabrication of highly ordered porous membranes of cellulose triacetate on ice substrates using breath figure method

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