Buckle morphologies of wedge-shaped Fe films quenched by silicone oil during deposition

Shan-xin, YU; Yong-ju, Zhang; Zhou, Hong; Cai, Peng; Chen, Miaogen

doi:10.1016/j.apsusc.2009.08.084

Cited by 16 publications

(4 citation statements)

References 20 publications

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“…The growth period is about several days. If the sample is kept in a vacuum condition (the pressure lower than several pascals) after deposition, however, no buckle pattern can be observed, in accord with the previous studies [13,14].…”

Section: Resultssupporting

confidence: 90%

Mechanical Instability of Wedge-Shaped Cr Films Quenched by Silicone Oil during Deposition

Zhang

Shan-xin

Zhou

et al. 2013

AMR

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By using the mobile property of silicone oil during deposition, characteristic wedge-shaped chromium (Cr) films have been successfully prepared on glass substrates by direct current magnetron sputtering, and their mechanical instability is investigated. The experiment shows that a disordered network composed of straight-sided buckles, which is due to relief of large compressive stress after deposition, can be widely observed in these films. The size of the buckles increases linearly with the film thickness. In the vicinity of spreading front of the silicone oil, parallel straight-sided buckles perpendicular to the front and bifurcation morphologies can be observed. The influence of the edge effect on the buckle morphologies is also discussed in this paper.

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Section: Resultssupporting

confidence: 90%

Mechanical Instability of Wedge-Shaped Cr Films Quenched by Silicone Oil during Deposition

Zhang

Shan-xin

Zhou

et al. 2013

AMR

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“…It is plausible to assume that the formation of Au NPs by sputtering follows a similar mechanism of thin-film growth on liquid; ,− that is, the metal film formation proceeds through nucleation, growth of atomic compact clusters, aggregation of branched islands, and finally, the formation of continuous films . Indeed, small Au NP growth on the surface of the ILs seems to stop when forming compact clusters followed by the diffusion of the NPs to the liquid bulk phase for ILs containing low coordinating groups [BMI·PF 6 and (MeOE)MI·NTf 2 ].…”

Section: Results and Discussionmentioning

confidence: 99%

Surface Composition/Organization of Ionic Liquids with Au Nanoparticles Revealed by High-Sensitivity Low-Energy Ion Scattering

et al. 2013

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High-sensitivity low-energy ion scattering (HS-LEIS) analysis was used to elucidate the outermost layer of both functionalized and non-functionalized imidazolium ionic liquids (ILs). The IL outermost layer is composed of all atoms of both cations and anions. The HS-LEIS analyses also allow for quantitative measurement of the thickness of IL overlayers on Au nanoparticles prepared by sputter deposition, which was shown to be a monolayer of ions, as predicted by density functional theory calculations.

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“…Recently, buckling has attracted much attention as a useful approach for surface pattern controlment and material property characterization, which arises when a relatively thick substrate‐supported thin layer undergoes an excessive compression. The compression generally originates from the mechanical constants mismatch between different layers, which can be utilized to create interesting topographical patterns such as straight‐sided wrinkles, telephone cord structures, and circular blisters . A range of different strategies have been explored to produce patterns in thin films.…”

Section: Introductionmentioning

confidence: 99%

Solvent‐induced surface instability of thin metal films on a polymer substrate

Xue

Wang

Zeng

et al. 2017

Surface & Interface Analysis

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The solvent-provoked formation and evolution of thin film buckling-delamination on a compliant substrate have been studied. The film surface is observed by an optical microscope showing a remarkable dynamic buckling-delamination development and a subsequent stable branchedstraight state. It is revealed that the initiation, propagation, and the resulting patterns of film buckles are strongly dependent on the solvent type, film stress, interfacial adhesion, and film thickness. The buckling could be controlled further by a reasonable chemical solvent configuration and used to provide useful information for the pattern creation on polymer systems in diverse fields, such as micro/nanofabrication and optics. KEYWORDS buckle, film stress, polymer substrate, solvent diffusion, thin film 1 | INTRODUCTION Thin films and coatings are widely used in a substantial range of technological applications, ranging from protective layers to applications in optical, electric, engineering, biomedical, nuclear, and thermal fields. The high performance and reliability of film-substrate structures are strongly dependent on their mechanical integrity and the adhesion to the substrate. Failure of thin film coatings can occur in various forms, such as blistering, delamination, and dewetting.Surface instability is ubiquitous which can be frequently observed in many systems, involving metallic or soft polymeric thin films on elastomeric substrates, hydrogels on a rigid flat substrate, and biological tissues in response to external stimuli, such as mechanical pressure, 1,2 temperature, 3 pH level, 4 light, 5 humidity, 6 and solvent environment. 7 Although the phenomenon has been treated as a nuisance to be avoided, researchers have extensively exploited the surface instability in a wide range of applications ranging from microelectronics, 8,9 biotechnology, 10 fabrication of structures 11 to optical systems 12,13 and microfluidic devices. 14,15 Recently, buckling has attracted much attention as a useful approach for surface pattern controlment and material property characterization, 16,17 which arises when a relatively thick substrate-supported thin layer undergoes an excessive compression. The compression generally originates from the mechanical constants mismatch between different layers, which can be utilized to create interesting topographical patterns such as straight-sided wrinkles, 18 telephone cord structures, 19-23 and circular blisters. 24,25 A range of different strategies have been explored to produce patterns in thin films. Laser-induced well-ordered and controllable telephone cord patterns were constructed in as-deposited metallic thin films. 26 Pre-patterning the thin film under strain, in combination with a triggered release of the adhesion via electrochemistry, allowed for the design of well-controlled sub-micrometer. 27 Formation of mutually orthogonal multi-scale instability modes was triggered by electric-thermal loads. 28 A freely floating polymer film wrinkled under the capillary force exerted by a drop of water. 29 It is...

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Buckle morphologies of wedge-shaped Fe films quenched by silicone oil during deposition

Cited by 16 publications

References 20 publications

Mechanical Instability of Wedge-Shaped Cr Films Quenched by Silicone Oil during Deposition

Mechanical Instability of Wedge-Shaped Cr Films Quenched by Silicone Oil during Deposition

Surface Composition/Organization of Ionic Liquids with Au Nanoparticles Revealed by High-Sensitivity Low-Energy Ion Scattering

Solvent‐induced surface instability of thin metal films on a polymer substrate

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