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Liu N, Sun Q, Yang Z, Shan L, Wang Z, Li H. Wrinkled Interfaces: Taking Advantage of Anisotropic Wrinkling to Periodically Pattern Polymer Surfaces. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207210. [PMID: 36775851 PMCID: PMC10131883 DOI: 10.1002/advs.202207210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Indexed: 06/18/2023]
Abstract
Periodically patterned surfaces can cause special surface properties and are employed as functional building blocks in many devices, yet remaining challenges in fabrication. Advancements in fabricating structured polymer surfaces for obtaining periodic patterns are accomplished by adopting "top-down" strategies based on self-assembly or physico-chemical growth of atoms, molecules, or particles or "bottom-up" strategies ranging from traditional micromolding (embossing) or micro/nanoimprinting to novel laser-induced periodic surface structure, soft lithography, or direct laser interference patterning among others. Thus, technological advances directly promote higher resolution capabilities. Contrasted with the above techniques requiring highly sophisticated tools, surface instabilities taking advantage of the intrinsic properties of polymers induce surface wrinkling in order to fabricate periodically oriented wrinkled patterns. Such abundant and elaborate patterns are obtained as a result of self-organizing processes that are rather difficult if not impossible to fabricate through conventional patterning techniques. Focusing on oriented wrinkles, this review thoroughly describes the formation mechanisms and fabrication approaches for oriented wrinkles, as well as their fine-tuning in the wavelength, amplitude, and orientation control. Finally, the major applications in which oriented wrinkled interfaces are already in use or may be prospective in the near future are overviewed.
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Affiliation(s)
- Ning Liu
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Qichao Sun
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Zhensheng Yang
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Linna Shan
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Zhiying Wang
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Hao Li
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
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Thami T, Ramonda M, Ferez L, Flaud V, Petit E, Cot D, Rebière B, Ameduri B. Growth-Induced Wrinkles and Dotlike Patterns of a Swollen Fluoroalkylated Thin Film by the Reaction of Surface-Attached Polymethylhydrosiloxane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14140-14152. [PMID: 36350015 DOI: 10.1021/acs.langmuir.2c02109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The design of hydrophobic surfaces requires a material which has a low solid surface tension and a simple fabrication process for anchoring and controlling the surface morphology. A generic method for the spontaneous formation of robust instability patterns is proposed through the hydrosilylation of a fluoroalkene bearing dangling chains, Rf = C6F13(CH2)3-, with a soft polymethylhydrosiloxane (PMHS) spin-coated gel polymer (0.8 μm thick) using Karstedt catalyst. These patterns were easily formed by an irreversible swelling reaction due to the attachment of a layer to various substrates. The buckling instability was created by two different approaches for a gel layer bound to a rigid silicon wafer substrate (A) and to a soft nonswelling silicone elastomer foundation (B). The observations of grafted Rf-PMHS films in the swollen state by microscopy revealed two distinct permanent patterns on various substrates: dotlike of wavelength λ = 0.4-0.7 μm (A) or wrinkle of wavelength λ = 4-7 μm (B). The elastic moduli ratios of film/substrate were determined using PeakForce quantitative nanomechanical mapping. The characteristic wavelengths (λ) of the patterns for systems A and B were quantitatively estimated in relation to the thickness of the top layer. A diversity of wrinkle morphologies can be achieved by grafting different side chains on pristine PMHS films. The water contact angle (WCA) hysteresis of fluorinated chain (Rf) was enhanced upon roughening the surfaces, giving highly hydrophobic surface properties for water with static/hysteresis WCAs of 136°/74° in the resulting wrinkle (B) and 119°/41° in the dotlike of lower roughness (A). The hydrophobic properties of grafted films on A with various mixtures of hexyl/fluoroalkyl chains were characterized by static CA: WCA 104-119°, ethylene glycol CA 80-96°, and n-hexadecane CA 17-61°. A very low surface energy of 15 mN/m for Rf-PMHS was found on the smoother dotlike pattern.
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Affiliation(s)
- Thierry Thami
- Institut Européen des Membranes, IEM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
| | - Michel Ramonda
- Centre de Technologie de Montpellier, CTM, Université Montpellier, Bât. 5, cc007 Campus Saint Priest, Montpellier, France34095
| | - Lynda Ferez
- Institut Européen des Membranes, IEM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
| | - Valérie Flaud
- Institut Charles Gerhardt de Montpellier, ICGM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
| | - Eddy Petit
- Institut Européen des Membranes, IEM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
| | - Didier Cot
- Institut Européen des Membranes, IEM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
| | - Bertrand Rebière
- Institut Charles Gerhardt de Montpellier, ICGM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
| | - Bruno Ameduri
- Institut Charles Gerhardt de Montpellier, ICGM, Université Montpellier, CNRS, ENSCM, Montpellier, France34095
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Raj SS, Mathew RM, Nair Y, S. T. A, T. P. V. Fabrication and Applications of Wrinkled Soft Substrates: An Overview. ChemistrySelect 2022. [DOI: 10.1002/slct.202200714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Soorya S. Raj
- Department of Chemistry CHRIST (Deemed to be University) Hosur Road Bangalore 560029 India
| | - Romina Marie Mathew
- Department of Chemistry CHRIST (Deemed to be University) Hosur Road Bangalore 560029 India
| | - Yamuna Nair
- Department of Chemistry CHRIST (Deemed to be University) Hosur Road Bangalore 560029 India
| | - Aruna S. T.
- Surface Engineering Division CSIR – National Aerospace Laboratories HAL Airport Road Bangalore 560017 India
| | - Vinod T. P.
- Department of Chemistry CHRIST (Deemed to be University) Hosur Road Bangalore 560029 India
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4
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Junisu BA, Chang ICY, Lin CC, Sun YS. Surface Wrinkling on Polymer Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3907-3916. [PMID: 35298168 DOI: 10.1021/acs.langmuir.2c00156] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A series of gold precursor solutions are prepared by dissolving HAuCl4 and its mixtures with K2CO3 of different contents in deionized (DI) water. Neat HAuCl4 predominately forms AuCl4- ions in an aqueous solution. In the presence of K2CO3, AuCl4- ions hydrolyze to form [AuCl4-x(OH)x]- complex ions. Increasing the content of K2CO3 in a gold precursor solution increases the content of [AuCl4-x(OH)x]- complex ions and decreases the content of AuCl4- ions. Poly(4-vinyl pyridine) (P4VP) films of two different molecular weights are deposited on SiOx/Si by spin coating, by which the thicknesses are controlled by polymer weight fractions in butanol. Those P4VP films form periodic wrinkles when immersed in aqueous solutions, followed by drying. The surface wrinkling is induced by swelling pressure that overwhelms the mechanical property of the P4VP film. The periodicity and amplitude of wrinkles grown on the P4VP films strongly correlate with initial thickness, AuCl4- ion content, and residual stress.
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Affiliation(s)
- Belda Amelia Junisu
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Iris Ching-Ya Chang
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Chia-Chi Lin
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
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González-Henríquez CM, Rodríguez-Umanzor FE, Guzmán D, Sarabia-Vallejos MA, Rodríguez-Hernández J. Formation of responsive hierarchical wrinkled patterns on hydrogel films via multi-step methodology. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121662] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Rose MA, Bowen JJ, Morin SA. Emergent Soft Lithographic Tools for the Fabrication of Functional Polymeric Microstructures. Chemphyschem 2019; 20:909-925. [DOI: 10.1002/cphc.201801140] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/15/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Mark A. Rose
- Department of Chemistry University of Nebraska-Lincoln Lincoln, NE 68588 USA
| | - John J. Bowen
- Department of Chemistry University of Nebraska-Lincoln Lincoln, NE 68588 USA
| | - Stephen A. Morin
- Department of Chemistry University of Nebraska-Lincoln Lincoln, NE 68588 USA
- Nebraska Center for Materials and Nanoscience University of Nebraska-Lincoln Lincoln, NE 68588 USA
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Li Y, Choi J, Sun Z, Russell TP, Carter KR. Fabrication of sub-20 nm patterns using dopamine chemistry in self-aligned double patterning. NANOSCALE 2018; 10:20779-20784. [PMID: 30402646 DOI: 10.1039/c8nr04040k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A self-aligned double patterning approach using a dopamine chemistry-inspired coating technique has been developed for the fabrication of sub-20 nm patterns. Poly(methyl methacrylate) (PMMA) films were patterned by nanoimprint lithography to form relief features. A thin layer of polydopamine (PDA) was conformally deposited on the surface of the PMMA pattern sidewalls to form a spacer layer. After etching the surface of the PDA layer from the horizontal surfaces and subsequently removing the PMMA template, free-standing PDA sidewall patterns remained that essentially doubled the original PMMA pattern density with decreased feature dimensions as compared to the initial PMMA template structures. The critical dimension of the PDA patterns can be tuned to ∼20 nm by controlling the PDA deposition conditions and further reduced to ∼13 nm by thermal carbonization of the PDA. Both simple lines and more complex rhombic ring features were fabricated by this technique to demonstrate its capacity for replicating arbitrary patterns. This work represents a simple and scalable strategy for preparing well-defined nanostructures with feature sizes usually only accessible via complex leading edge lithographic methods.
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Affiliation(s)
- Yinyong Li
- Department of Polymer Science and Engineering, University of Massachusetts - Amherst, 120, Governors Drive, Massachusetts 01003, USA.
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8
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Hou H, Hu K, Lin H, Forth J, Zhang W, Russell TP, Yin J, Jiang X. Reversible Surface Patterning by Dynamic Crosslink Gradients: Controlling Buckling in 2D. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1803463. [PMID: 30066441 DOI: 10.1002/adma.201803463] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/30/2018] [Indexed: 06/08/2023]
Abstract
Harnessing the self-organization of soft materials to make complex, well-ordered surface patterns in a noninvasive manner is challenging. The wrinkling of thin films provides a compelling strategy to achieve this. Despite much attention, however, a simple, single-step, reversible method that gives rise to controlled, two-dimensional (2D) ordered, continuous, and discontinuous patterns has proven to be elusive. Here a novel, robust method is described to achieve this using an ultraviolet-light-sensitive anthracene-containing polymer thin film. The origin of the patterns is the local buckling of the thin film, where the control over the topology is given by laterally patterning out-of-plane gradients in the crosslink density of the film. The underlying buckling mechanics and formation of the surface features are well-described by finite element analysis. By illuminating the film with a photomask, local and long-range patterns that can be both continuous and discontinuous are able to be written. Furthermore, the patterning is fully reversible over multiple cycles. The results demonstrate a simple strategy for erasable storage of information in a surface topography that has applications in memory, anticounterfeiting, and plasmonics.
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Affiliation(s)
- Honghao Hou
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Kaiming Hu
- State Key Laboratory of Mechanical Systems and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hongbo Lin
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Joe Forth
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Wenming Zhang
- State Key Laboratory of Mechanical Systems and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Thomas P Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003, USA
| | - Jie Yin
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xuesong Jiang
- School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
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9
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Choi J, Gunkel I, Li Y, Sun Z, Liu F, Kim H, Carter KR, Russell TP. Macroscopically ordered hexagonal arrays by directed self-assembly of block copolymers with minimal topographic patterns. NANOSCALE 2017; 9:14888-14896. [PMID: 28949359 DOI: 10.1039/c7nr05394k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A simple and robust method has been developed for the generation of macroscopically ordered hexagonal arrays from the directed self-assembly (DSA) of cylinder-forming block copolymers (BCPs) based on minimal trench patterns with solvent vapor annealing. The use of minimal trench patterns allows us to probe the guided hexagonal arrays of cylindrical microdomains using grazing incidence small angle X-ray scattering (GISAXS), where the sample stage is rotated on the basis of the six-fold symmetry of a hexagonal system. It is found that the (10) planes of hexagonal arrays of cylindrical microdomains are oriented parallel to the underlying trench direction over macroscopic length scales (∼1 × 1 cm2). However, there are misorientations of the hexagonal arrays with short-range ordering. GISAXS patterns show that the hexagonal arrays on the minimal trench pattern are distorted, deviating from a perfect hexagonal lattice. This distortion has been attributed to the absence of topographic constraints in the unconfined direction on the 1-D minimal trench pattern. Also, the frustration of BCP microdomains, arising from the incommensurability between the trench pitch and natural period of the BCP at the base of the trench, influences the distortion of the hexagonal arrays.
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Affiliation(s)
- Jaewon Choi
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA 01003, USA.
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10
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Wang M, Gorham JM, Killgore JP, Omidvar M, Lin H, DelRio FW, Cox LM, Zhang Z, Ding Y. Formation of a Crack-Free, Hybrid Skin Layer with Tunable Surface Topography and Improved Gas Permeation Selectivity on Elastomers Using Gel-Liquid Infiltration Polymerization. ACS APPLIED MATERIALS & INTERFACES 2017; 9:28100-28106. [PMID: 28758394 DOI: 10.1021/acsami.7b09274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surface modifications of elastomers and gels are crucial for emerging applications such as soft robotics and flexible electronics, in large part because they provide a platform to control wettability, adhesion, and permeability. Current surface modification methods via ultraviolet-ozone (UVO) and/or O2 plasma, atomic layer deposition (ALD), plasmas deposition, and chemical treatment impart a dense polymer or inorganic layer on the surface that is brittle and easy to fracture at low strain levels. This paper presents a new method, based on gel-liquid infiltration polymerization, to form hybrid skin layers atop elastomers. The method is unique in that it allows for control of the skin layer topography, with tunable feature sizes and aspect ratios as high as 1.8 without fracture. Unlike previous techniques, the skin layer formed here dramatically improves the barrier properties of the elastomer, while preserving skin layer flexibility. Moreover, the method is versatile and likely applicable to most interfacial polymerization systems and network polymers on flat and patterned surfaces.
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Affiliation(s)
- Mengyuan Wang
- Materials Science and Engineering Program, University of Colorado at Boulder , Boulder, Colorado 80309-0596, United States
- Department of Mechanical Engineering, University of Colorado at Boulder , Boulder, Colorado 80309-0427, United States
| | - Justin M Gorham
- Materials Measurement Science Division, National Institute of Standards and Technology (NIST) , Gaithersburg, Maryland 20899, United States
| | - Jason P Killgore
- Applied Chemicals and Materials Division, National Institute of Standards and Technology (NIST) , Boulder, Colorado 80305, United States
| | - Maryam Omidvar
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States
| | - Haiqing Lin
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States
| | - Frank W DelRio
- Applied Chemicals and Materials Division, National Institute of Standards and Technology (NIST) , Boulder, Colorado 80305, United States
| | - Lewis M Cox
- Applied Chemicals and Materials Division, National Institute of Standards and Technology (NIST) , Boulder, Colorado 80305, United States
| | - Zheng Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973-5000, United States
| | - Yifu Ding
- Materials Science and Engineering Program, University of Colorado at Boulder , Boulder, Colorado 80309-0596, United States
- Department of Mechanical Engineering, University of Colorado at Boulder , Boulder, Colorado 80309-0427, United States
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11
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Santander-Borrego M, Taran E, Shadforth AMA, Whittaker AK, Chirila TV, Blakey I. Hydrogels with Lotus Leaf Topography: Investigating Surface Properties and Cell Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:485-493. [PMID: 28054787 DOI: 10.1021/acs.langmuir.6b03547] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The interactions of cells with the surface of materials is known to be influenced by a range of factors that include chemistry and roughness; however, it is often difficult to probe these factors individually without also changing the others. Here we investigate the role of roughness on cell adhesion while maintaining the same underlying chemistry. This was achieved by using a polymerization in mold technique to prepare poly(hydroxymethyl methacrylate) hydrogels with either a flat topography or a topography that replicated the microscale features of lotus leaves. These materials were then assessed for cell adhesion, and atomic force microscopy and contact angle analysis were then used to probe the physical reasons for the differing behavior in relation to cell adhesion.
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Affiliation(s)
- Miriem Santander-Borrego
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
| | - Elena Taran
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Australian National Fabrication Facility-Queensland Node , St. Lucia, Queensland 4072, Australia
| | - Audra M A Shadforth
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
| | - Andrew K Whittaker
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Centre for Advanced Imaging, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
| | - Traian V Chirila
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Faculty of Medicine and Biomedical Sciences, The University of Queensland , Herston Road, Herston, Queensland 4029, Australia
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
- Science & Engineering Faculty, Queensland University of Technology , 2 George Street Brisbane, Queensland 4001, Australia
- Faculty of Science, The University of Western Australia , Crawley, Western Australia 6009, Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Centre for Advanced Imaging, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
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12
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Development and Characterization of Asymmetric Swelling-Induced Wrinkles on Natural Rubber Surface. ELASTOMERS AND COMPOSITES 2016. [DOI: 10.7473/ec.2016.51.4.342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Park SK, Kwark YJ, Nam S, Park S, Park B, Yun S, Moon J, Lee JI, Yu B, Kyung KU. Wrinkle structures formed by formulating UV-crosslinkable liquid prepolymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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López AB, de la Cal JC, Asua JM. Controlling film topography to form highly hydrophobic waterborne coatings. SOFT MATTER 2016; 12:7005-7011. [PMID: 27476531 DOI: 10.1039/c6sm01081d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Coatings have a tremendous impact on economy as they reduce corrosion that has an estimated cost of 3% of the world's GDP. Hydrophobic coatings are particularly efficient for this purpose and the challenge is to produce cost effective and environmentally friendly, highly hydrophobic, cohesive and non-porous coatings applicable to large and irregular surfaces. This work shows that this goal can be achieved by forming wrinkles on the surface of waterborne coatings through fine-tuning of the film forming conditions. The proof of concept was demonstrated by using waterborne dispersions of copolymers of 1H,1H,2H,2H-perfluorodecyl acrylate and 2-ethylhexyl acrylate, and using the temperature and hardness of the copolymer as control variables during film formation. This allowed the formation of transparent films with a wrinkled surface that had a contact angle of 133°, which represents an increase of 20° with respect to the film cast under standard conditions.
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Affiliation(s)
- Ana B López
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian, 20018, Spain.
| | - José C de la Cal
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian, 20018, Spain.
| | - José M Asua
- POLYMAT and Kimika Aplikatua Saila, Kimika Zientzien Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia-San Sebastian, 20018, Spain.
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15
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Roy PK, Pant R, Nagarajan AK, Khare K. Mechanically Tunable Slippery Behavior on Soft Poly(dimethylsiloxane)-Based Anisotropic Wrinkles Infused with Lubricating Fluid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5738-5743. [PMID: 27221199 DOI: 10.1021/acs.langmuir.6b00865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate a novel technique to fabricate mechanically tunable slippery surfaces using one-dimensional (anisotropic) elastic wrinkles. Such wrinkles show tunable topography (amplitude) on the application of mechanical strain. Following Nepenthes pitcher plants, lubricating fluid infused solid surfaces show excellent slippery behavior for test liquid drops. Therefore, combining the above two, that is, infusing suitable lubricating fluid on elastic wrinkles, would enable us to fabricate mechanically tunable slippery surfaces. Completely stretched (flat) wrinkles have uniform coating of lubricating fluid, whereas completely relaxed (full amplitude) wrinkles have most of the lubricating oil in the wrinkle grooves. Therefore, water drops on completely stretched surface show excellent slippery behavior, whereas on completely relaxed surface they show reduced slippery behavior. Therefore, continuous variation of wrinkle stretching provides reversibly tunable slippery behavior on such a system. Because the wrinkles are one-dimensional, they show anisotropic tunability of slippery behavior depending upon whether test liquid drops slip parallel or perpendicular to the wrinkles.
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Affiliation(s)
- Pritam Kumar Roy
- Department of Physics, Indian Institute of Technology Kanpur , Kanpur 208016, India
| | - Reeta Pant
- Department of Physics, Indian Institute of Technology Kanpur , Kanpur 208016, India
| | | | - Krishnacharya Khare
- Department of Physics, Indian Institute of Technology Kanpur , Kanpur 208016, India
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16
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Izawa H, Okuda N, Ifuku S, Morimoto M, Saimoto H, Rojas OJ. Bio-based Wrinkled Surfaces Harnessed from Biological Design Principles of Wood and Peroxidase Activity. CHEMSUSCHEM 2015; 8:3892-3896. [PMID: 26489384 DOI: 10.1002/cssc.201500819] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Indexed: 06/05/2023]
Abstract
A new and simple approach for surface wrinkling inspired by polymer assemblies in wood fibers is introduced. A hard skin is synthesized on a linear polysaccharide support that resembles the structural units of the cell wall. This skin, a wood mimetic layer, is produced through immersion in a solution containing phenolic precursor and subsequent surface reaction by horseradish peroxidase. A patterned surface with micron-scale wrinkles is formed upon drying and as a result of inhomogeneous shrinkage. We demonstrate that the design of the wrinkled surfaces can be controlled by the molecular structure of the phenolic precursor, temperature, and drying stress. It is noteworthy that this is a totally bio-based system involving green materials and processes.
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Affiliation(s)
- Hironori Izawa
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8550, Japan.
| | - Noriko Okuda
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8550, Japan
| | - Shinsuke Ifuku
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8550, Japan
| | - Minoru Morimoto
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8550, Japan
| | - Hiroyuki Saimoto
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8550, Japan.
| | - Orlando J Rojas
- Biobased Colloids and Materials (BiCMat), School of Chemical Technology, Aalto University, P. O. Box 16300, 00076, Aalto, Finland
- Department of Forest Biomaterials, Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina, 27695-8005, United States
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17
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Li Y, John J, Kolewe KW, Schiffman JD, Carter KR. Scaling Up Nature: Large Area Flexible Biomimetic Surfaces. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23439-44. [PMID: 26423494 PMCID: PMC4957525 DOI: 10.1021/acsami.5b04957] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The fabrication and advanced function of large area biomimetic superhydrophobic surfaces (SHS) and slippery lubricant-infused porous surfaces (SLIPS) are reported. The use of roll-to-roll nanoimprinting techniques enabled the continuous fabrication of SHS and SLIPS based on hierarchically wrinkled surfaces. Perfluoropolyether hybrid molds were used as flexible molds for roll-to-roll imprinting into a newly designed thiol-ene based photopolymer resin coated on flexible polyethylene terephthalate films. The patterned surfaces exhibit feasible superhydrophobicity with a water contact angle around 160° without any further surface modification. The SHS can be easily converted into SLIPS by roll-to-roll coating of a fluorinated lubricant, and these surfaces have outstanding repellence to a variety of liquids. Furthermore, both SHS and SLIPS display antibiofouling properties when challenged with Escherichia coli K12 MG1655. The current article describes the transformation of artificial biomimetic structures from small, lab-scale coupons to low-cost, large area platforms.
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Affiliation(s)
- Yinyong Li
- Department of Polymer Science and Engineering, University of Massachusetts – Amherst, Massachusetts, United States
| | - Jacob John
- Department of Polymer Science and Engineering, University of Massachusetts – Amherst, Massachusetts, United States
| | - Kristopher W. Kolewe
- Department of Chemical Engineering, University of Massachusetts – Amherst, Massachusetts, 01003, United States
| | - Jessica D. Schiffman
- Department of Chemical Engineering, University of Massachusetts – Amherst, Massachusetts, 01003, United States
| | - Kenneth R. Carter
- Department of Polymer Science and Engineering, University of Massachusetts – Amherst, Massachusetts, United States
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18
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Park SK, Kwark YJ, Moon J, Joo CW, Yu B, Lee JI. Finely Formed, Kinetically Modulated Wrinkle Structures in UV-Crosslinkable Liquid Prepolymers. Macromol Rapid Commun 2015; 36:2006-11. [DOI: 10.1002/marc.201500370] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/12/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Seung Koo Park
- Soft I/O Interface Research Section; Smart I/O Platform Research Department; Information & Communications Core Technology Research Laboratory; Electronics and Telecommunications Research Institute; 218 Gajeongno Yuseong-gu Daejeon 34129 South Korea
| | - Young-Je Kwark
- Department of Organic Materials and Fiber Engineering; Soongsil University; 369 Sangdoro Dongjak-gu Seoul 06978 South Korea
| | - Jaehyun Moon
- Soft I/O Interface Research Section; Smart I/O Platform Research Department; Information & Communications Core Technology Research Laboratory; Electronics and Telecommunications Research Institute; 218 Gajeongno Yuseong-gu Daejeon 34129 South Korea
| | - Chul Woong Joo
- Soft I/O Interface Research Section; Smart I/O Platform Research Department; Information & Communications Core Technology Research Laboratory; Electronics and Telecommunications Research Institute; 218 Gajeongno Yuseong-gu Daejeon 34129 South Korea
| | - Byounggon Yu
- Soft I/O Interface Research Section; Smart I/O Platform Research Department; Information & Communications Core Technology Research Laboratory; Electronics and Telecommunications Research Institute; 218 Gajeongno Yuseong-gu Daejeon 34129 South Korea
| | - Jeong-Ik Lee
- Soft I/O Interface Research Section; Smart I/O Platform Research Department; Information & Communications Core Technology Research Laboratory; Electronics and Telecommunications Research Institute; 218 Gajeongno Yuseong-gu Daejeon 34129 South Korea
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19
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Rodríguez-Hernández J. Wrinkled interfaces: Taking advantage of surface instabilities to pattern polymer surfaces. Prog Polym Sci 2015. [DOI: 10.1016/j.progpolymsci.2014.07.008] [Citation(s) in RCA: 218] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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20
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Xu X, Yao X, Chen F, Fu Q. Kinetic study of a swelling-induced network of folds in a cross-linked PS-PDMS film. RSC Adv 2015. [DOI: 10.1039/c4ra13674h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Constructing a network of folds in a cross-linked PS-PDMS film through combining mesostructural organization of PS-PDMS and solvent-induced mechanical instability.
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Affiliation(s)
- Xin Xu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xuelin Yao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Feng Chen
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qiang Fu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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21
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Chen YC, Crosby AJ. High aspect ratio wrinkles via substrate prestretch. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5626-5631. [PMID: 24863587 DOI: 10.1002/adma.201401444] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 04/26/2014] [Indexed: 06/03/2023]
Abstract
A non-fractured, high aspect ratio wrinkled surface is successfully fabricated. Building upon recently developed models of the localization transition and the current knowledge of surface failures, the wrinkling mode is stabilized at high strain, doubling the accessible wrinkling aspect ratio to the currently reported value. This high aspect ratio surface provides significant promise for future wrinkle-based applications.
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Affiliation(s)
- Yu-Cheng Chen
- University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
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22
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Li Y, Dai S, John J, Carter KR. Superhydrophobic surfaces from hierarchically structured wrinkled polymers. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11066-11073. [PMID: 24131534 DOI: 10.1021/am403209r] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work reports the creation of superhydrophobic wrinkled surfaces with hierarchical structures at both the nanoscale and microscale. A nanoscale structure with 500 nm line gratings was first fabricated on poly(hydroxyethyl methacrylate) films by nanoimprint lithography while a secondary micro-scale structure was created by spontaneous wrinkling. Compared with random wrinkles whose patterns show no specific orientation, the hierarchical wrinkles exhibit interesting orientation due to confinement effects of pre-imprinted line patterns. The hierarchically wrinkled surfaces have significantly higher water contact angles than random wrinkled surfaces, exhibiting superhydrophobicity with water contact angles higher than 160° and water sliding angle lower than 5°. The hierarchically structured wrinkled surfaces exhibit tunable wettability from hydrophobic to superhydrophobic and there is an observed transition from anisotropic to isotropic wetting behavior achievable by adjusting the initial film thickness.
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Affiliation(s)
- Yinyong Li
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003-9263, United States
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23
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Surnar B, Jayakannan M. Stimuli-Responsive Poly(caprolactone) Vesicles for Dual Drug Delivery under the Gastrointestinal Tract. Biomacromolecules 2013; 14:4377-87. [DOI: 10.1021/bm401323x] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Bapurao Surnar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha
Road, Pune 411008, Maharashtra, India
| | - M. Jayakannan
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha
Road, Pune 411008, Maharashtra, India
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