Wrinkled interfaces: Taking advantage of surface instabilities to pattern polymer surfaces

Rodríguez‐Hernández, Juan

doi:10.1016/j.progpolymsci.2014.07.008

Cited by 279 publications

(175 citation statements)

References 375 publications

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“…Buckling of rigid thin layers attached to a compliant substrate upon compression is a very extended method to create topological patterns at the nano-and micrometer scale [24]. Under compression, buckling instabilities are caused by the mechanical mismatch between the thin stiff layer and the elastic substrate.…”

Section: B) Mechanical Properties Of the Uvo Treated Surfacementioning

confidence: 99%

“…Extensive experimental [13][14][15][16][17], and theoretical studies [18][19][20][21][22] have explored multifunctional micro/nano-scale surface patterns by harnessing spontaneous buckling of bilayer composite systems composed of a wide range of hard and soft materials. [13][14][15][16] Wrinkled interfaces prepared on elastic foundations exhibit potential interest for multiple applications [23,24]: as templates [13][14][15][16][17], as platforms for flexible electronics [18][19][20], as supports with controlled/responsive wettability [21,22] and/or adhesion [25][26][27] or for biorelated applications [28][29][30].…”

mentioning

confidence: 99%

“…[24] As a result, control over the experimental parameters such as pre-stretching (direction, % of pre-strain, heating temperature) as well as film thickness or mechanical mismatch between the rigid layer and the soft foundation permitted the…”

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confidence: 99%

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Modification of poly(dimethylsiloxane) as a basis for surface wrinkle formation: Chemical and mechanical characterization

Campo

Nogales

Ezquerra

et al. 2016

Polymer

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In this manuscript, the processes occurring during UV-ozone treatment on polydimethylsiloxane (PDMS) surfaces i.e. formation of a stiff silica-like layer and surface degradation have been studied. While the chemical changes have been evaluated using Confocal Raman Microscopy (CRM) with submicrometer resolution, partial surface degradation occurring during longer ozone treatments have been evidenced both by Optical Profilometry and AFM.Whereas previous studies reported the formation of a thin silica layer of around 20-30nm up to 200 nm depending on the method employed, herein, we demonstrated that in effect a thin rigid layer is formed but instead of a sharp interface predicted by previous reports a gradient depth profile was obtained. CRM evidenced the formation of a 4 µm layer of modified material. By Quantitative Nanomechanical Mapping (QNM) and based on the equations that predict the wrinkle formation, a surface layer thickness of around of 4.5 µm was also determined.

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Section: B) Mechanical Properties Of the Uvo Treated Surfacementioning

confidence: 99%

mentioning

confidence: 99%

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Modification of poly(dimethylsiloxane) as a basis for surface wrinkle formation: Chemical and mechanical characterization

Campo

Nogales

Ezquerra

et al. 2016

Polymer

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“…3 Recently, significant efforts have focused on exploiting this approach to create surfaces suitable for a range of applications, including advanced adhesion, 4–7 tunable wettability, 8, 9 antifouling, 10, 11 particle assembly, 12 stem cell growth/differentiation, 13 ultrasensitive pressure sensor, 14 stretchable electronics, 15, 16 microlens arrays, 17 diffraction gratings, 18, 19 microcontact printing, 20 maskless lithography, 21 open-channel microfluidics, 22 and many others. 23–25 …”

Section: Introductionmentioning

confidence: 99%

Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification

Wei

Reese

et al. 2017

Macromolecules

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We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using post-polymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial crosslinking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ellipsometry and the through-thickness composition profile via time-of-flight secondary ion mass spectroscopy (ToF-SIMS) provided keys insight into parameters influencing the buckling behavior.

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“…The periods of the wrinkle structures were measured by using Gwyddion 2.51 free software, and the amplitude (A) and wavelength (λ) of the wrinkled structures are reported in Table 2. The amplitude and the wavelength of the wrinkles depend on the thickness and mechanical properties of the skin layer and the substrate according to linear bucking theory [31][32][33][34][35], which can be expressed as:…”

Section: Resultsmentioning

confidence: 99%

Combining Living Microorganisms with Regenerated Silk Provides Nanofibril-Based Thin Films with Heat-Responsive Wrinkled States for Smart Food Packaging

Valentini¹,

Bon²,

Pugno³

2018

Preprint

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Regenerated silk (RS) is a protein-based "biopolymer" that enables the design of new materials; here, we called "bionic" the process of regenerated silk production by a fermentation-assisted method. Based on yeast's fermentation, here we produced a living hybrid composite made of regenerated silk nanofibrils and a single-cell fungi, the Saccharomyces cerevisiae yeast extract, by fermentation of such microorganisms at room temperature in a dissolution bath of silkworm silk fibers. The fermentation-based processing enhances the beta-sheet content of the RS, corresponding to a reduction in water permeability and CO2 diffusion through RS/yeast thin films enabling the fabrication of a mechanically robust film that enhances food storage durability. Finally, a transfer print method, which consists of transferring RS and RS/yeast film layers onto a self-adherent paraffin substrate, was used for the realization of heat-responsive wrinkles by exploiting the high thermal expansion of the paraffin substrate that regulates the applied strain, resulting in a switchable coating morphology from the wrinkle-free state to a wrinkled state if the food temperature overcomes a designed threshold. We envision that such efficient and smart coatings can be applied for the realization of smart packaging that, through such a temperature-sensing mechanism, can be used to control food storage conditions.

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Wrinkled interfaces: Taking advantage of surface instabilities to pattern polymer surfaces

Cited by 279 publications

References 375 publications

Modification of poly(dimethylsiloxane) as a basis for surface wrinkle formation: Chemical and mechanical characterization

Modification of poly(dimethylsiloxane) as a basis for surface wrinkle formation: Chemical and mechanical characterization

Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification

Combining Living Microorganisms with Regenerated Silk Provides Nanofibril-Based Thin Films with Heat-Responsive Wrinkled States for Smart Food Packaging

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