Wrinkles with a well-ordered checkerboard pattern, created using dip-coating of poly(methyl methacrylate) on a UV–ozone-treated poly(dimethylsiloxane) substrate

Watanabe, Satoshi

doi:10.1039/c2sm06669f

Cited by 30 publications

(33 citation statements)

References 44 publications

(62 reference statements)

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“…As previously reported by a few groups, the oxidized surface of a PDMS sheet is undulated when the sheet is immersed in a polar solvent . We also observed that the polar solvents listed in Table (i.e., NMP, DMF, DMSO, EPN, and DO) induced wrinkles or creases on the surface oxidized by UV‐ozone treatment.…”

Section: Resultssupporting

confidence: 82%

“…As previously reported, the wavelength of the creases (i.e., the distance between two neighboring creases) is determined by the thickness of the oxidized layer. In the case shown in Figure , the wavelength is similar to the width of the oxidized zone.…”

Section: Resultsmentioning

confidence: 70%

“…Poly(dimethylsiloxane) (PDMS) surface oxidized by UV‐ozone treatment, oxygen plasma treatment, or chemical oxidation is regularly undulated to form wrinkles or creases due to buckling instability . Particularly, micrometer‐ or nanometer‐sized wrinkles are useful as templates to regularly arrange particles .…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of regular arrays of organic crystalline needles using creases formed on oxidized poly(dimethylsiloxane) surfaces

Watanabe

Koga

Ichikawa

2019

J of Applied Polymer Sci

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In this study, creases are regularly self‐assembled on the oxidized surface of poly(dimethylsiloxane) by swelling‐induced buckling instability. These creases are then used as templates for the regular arrangement of crystalline needles. The solution of an organic compound is confined in the aligned creases and dried to generate a crystalline needle in each crease. Thus, the orientation of the crystalline needles and their two‐dimensional position could be controlled. The organic compounds used in this study are anthraquinone and 9,10‐dibromoanthracene, among which the latter is an organic semiconducting material. It is expected that the method proposed in the study can be used to fabricate regular arrays of organic semiconducting crystalline needles or nanowires that can be used as elements of electronic devices such as organic field‐effect transistors and chemical sensors. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47736.

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Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 70%

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Fabrication of regular arrays of organic crystalline needles using creases formed on oxidized poly(dimethylsiloxane) surfaces

Watanabe

Koga

Ichikawa

2019

J of Applied Polymer Sci

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“…Studies on swelling-induced wrinkling using various other methods have been reported, in which various polymeric materials, such as poly(acrylamide), 30 poly(2-hydroxyethyl methacrylate), 31 polystyrene, 32 and PDMS 18,33,34 were used. The materials were swollen with water, 30,31 toluene, 32 ethanol, 18,33 or acetonitrile.…”

mentioning

confidence: 99%

“…The materials were swollen with water, 30,31 toluene, 32 ethanol, 18,33 or acetonitrile. 34 The techniques employed to obtain stiff, thin surface layers included the use of a crosslinking agent to achieve high cross-link density 30 and UV-ozone treatment. 18,[32][33][34] However, the swelling-induced wrinkling of PDMS with a surface layer hardened by treatment with concentrated sulfuric acid and nitric acid has not been studied in detail.…”

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confidence: 99%

Area‐selective microwrinkle formation on poly(dimethylsiloxane) by treatment with strong acid

Watanabe

Hashimoto

2014

J Polym Sci B Polym Phys

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Microwrinkles were formed by treating poly(dimethylsiloxane) (PDMS) surfaces with a mixture of concentrated sulfuric acid and nitric acid at 80 °C followed by a water rinsing step. The acid treatment oxidized the treated area, which also swelled owing to absorption of water during the rinsing step. This absorption of water induced a compressive stress on the PDMS surface that caused the formation of wrinkles. The appearance of wrinkles was controlled by the time interval between the end of the acid treatment and the beginning of the water rinsing step. Wrinkles were formed when the time interval was shorter than 5 s, as water was absorbed by the hygroscopic acid molecules within the treated surface. For longer time intervals of 300 s, this phenomenon was not observed. Based on these findings, a procedure for forming wrinkles in specific areas was developed by hydrating the chosen areas with wet filter paper cut into specific shapes after the acid treatment. The formation of wrinkles was confined to the area under the piece of paper. The orientation and alignment of the wrinkles at the boundaries were also characterized. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 167–174

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Colloidal Surface Assemblies: Nanotechnology Meets Bioinspiration

Kraus

Brodoceanu

Pazos-Perez

et al. 2013

Adv Funct Materials

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This Feature Article discusses two biomimetic aspects of functional particle surface assembly: the fabrication of biologically inspired structures from particles and the arrangement of particles on biomimetic templates. The fi rst part discusses the creation of primary patterns by convective assembly and adsorption of particles that can be modifi ed by a combination of etching and growth steps. Resulting structures mimic moth eyes, Lotus leaves, and the Gecko's adhesive structures, for example. The second part focusses on template assisted self-assembly (TASA) of particles. Herein, biological examples are inspiring in terms of structure formation related processes, rather than in terms of functionality. Template formation is a major bottleneck TASA. It is illustrated how bio-inspired wrinkling processes help overcoming this problem and can be employed for forming highly ordered functional nanoparticle assemblies.

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Wrinkles with a well-ordered checkerboard pattern, created using dip-coating of poly(methyl methacrylate) on a UV–ozone-treated poly(dimethylsiloxane) substrate

Cited by 30 publications

References 44 publications

Fabrication of regular arrays of organic crystalline needles using creases formed on oxidized poly(dimethylsiloxane) surfaces

Fabrication of regular arrays of organic crystalline needles using creases formed on oxidized poly(dimethylsiloxane) surfaces

Area‐selective microwrinkle formation on poly(dimethylsiloxane) by treatment with strong acid

Colloidal Surface Assemblies: Nanotechnology Meets Bioinspiration

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