Plasma‐Assisted Fabrication and Processing of Biomaterials

Bazaka, Kateryna; Grant, Daniel S.; Alancherry, Surjith; Jacob, Mohan V.

doi:10.1002/9783527690916.ch4

Cited by 4 publications

(3 citation statements)

References 178 publications

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“…In contrast, dewetting is often encountered in the case of solution-based polymer coatings [ 3 ]. Vapor-deposited polymer coatings are widely discussed in interfacial engineering and surface modification technologies for surfaces/devices with sensitive and miniaturized patterns or structures [ 4 – 5 ]. Furthermore, vapor-deposited polymers provide defined chemical control and/or precise accessibility to the linkage with functional molecules at the coating interface.…”

Section: Reviewmentioning

confidence: 99%

Micro- and nano-surface structures based on vapor-deposited polymers

Chen

2017

Beilstein J. Nanotechnol.

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Vapor-deposition processes and the resulting thin polymer films provide consistent coatings that decouple the underlying substrate surface properties and can be applied for surface modification regardless of the substrate material and geometry. Here, various ways to structure these vapor-deposited polymer thin films are described. Well-established and available photolithography and soft lithography techniques are widely performed for the creation of surface patterns and microstructures on coated substrates. However, because of the requirements for applying a photomask or an elastomeric stamp, these techniques are mostly limited to flat substrates. Attempts are also conducted to produce patterned structures on non-flat surfaces with various maskless methods such as light-directed patterning and direct-writing approaches. The limitations for patterning on non-flat surfaces are resolution and cost. With the requirement of chemical control and/or precise accessibility to the linkage with functional molecules, chemically and topographically defined interfaces have recently attracted considerable attention. The multifunctional, gradient, and/or synergistic activities of using such interfaces are also discussed. Finally, an emerging discovery of selective deposition of polymer coatings and the bottom-up patterning approach by using the selective deposition technology is demonstrated.

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Section: Reviewmentioning

confidence: 99%

Micro- and nano-surface structures based on vapor-deposited polymers

Chen

2017

Beilstein J. Nanotechnol.

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“…This interface technology of polymer thin films shows promise in current materials science to provide controlled surface engineering properties and has successfully demonstrated new possibilities and applications for prospective materials with current existing materials. 3,4 With the same merits of the vapor deposition process (dry process and conformal film uniformity) described above, vapor-deposited polymers provide an additional variety of chemical functionalities, and post-and more sophisticated conjugation chemistry or multifunctionality 5,6 can be further executed [7][8][9][10][11][12][13][14] . Furthermore, from the physical prospective point of view, these vapor-deposited polymers are available for structuring/patterning with lithographic techniques and render confined compartments at the micro/nanoscale of these functional polymers.…”

Section: Introductionmentioning

confidence: 99%

Vapor-Deposited Polymer Films and Structure: Methods and Applications

et al. 2023

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Vapor deposition of polymers is known to result in densified thin films, and recent developments have advanced these polymers with interesting fabrication techniques to a variety of controlled structures other than thin films. With the advantages of chemical modification and functionalization of these polymers, advancements have combined both the physical and chemical properties of these vapor-deposited polymers to obtain controlled anisotropic polymers, including layer-by-layer, gradient, hierarchical, porosity, and the combination of the above, meaning that the produced polymers are functional and are addressed in devised physical configurations and chemical compositions. The main purpose of using polymer coatings as a tool for surface modification is to provide additional properties that decouple the natural properties of the underlying materials (including metals, polymers, oxides/ceramics, glass, silicon, etc.), and recent advancements have rendered novel insights into combined physical and chemical properties to fulfill the increasing needs of sophisticated requirements of materials for users. The review herein intends to deliver messages of recent progress of the advancements of vapor-deposited polymers, with discussions of the variations of the physical structures and chemical functionalities, and how these two aspects are integrated with novel fabrication techniques.

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“…DLC coatings are characterized by excellent biocompatibility, low friction, and low wear. [6] Although the friction and wear behavior of DLC coating for prostheses has been extensively documented, [7][8][9] in most cases the studies were conducted on the DLC coating and another material such as metal, ceramic, or polymer as a counterpart. [10,11] However, the tribological pair consisting of a DLC coating against a DLC coating has been little studied.…”

Section: Introductionmentioning

confidence: 99%

Low Wear and Low Friction DLC Coating With Good Adhesion to CoCrMo Metal Substrates

Cano

Lousa

Esteve

et al. 2018

Physica Status Solidi (b)

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A challenge currently facing the orthopedics sector consists in the durability problems posed by joint prosthesis based on metal‐on‐metal contacts. While the diamond‐like carbon (DLC)‐based coating solves the shortcomings of wear and friction found in the uncoated metal parts, they are generally subject to adhesion failures that may prove to be catastrophic. Our coatings were deposited with a specific multilayered composition that changes from highly metallic at the metal interface, up to a DLC at the sliding contact region. These coatings show very good wear performance results when tested in a highly humid air atmosphere as well as when they are tested in water immersion or in bovine serum. The friction coefficients of our DLC‐against‐DLC tribological pair are found to be always less than 0.1, while wear rates are extremely low, under 2.5 × 10−8 mm3/N m, and it produces highly polished surfaces. The compressive stresses of our coatings are always lower than 2.5 GPa, and when combined with good interface adhesion to the CoCrMo metal substrates, make the coatings highly resistant to delamination even after prolonged test runs. Raman analyses do not reveal any detectable changes even after very long test runs, indicating that no tribochemical reactions occur on the DLC coating.

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Plasma‐Assisted Fabrication and Processing of Biomaterials

Cited by 4 publications

References 178 publications

Micro- and nano-surface structures based on vapor-deposited polymers

Micro- and nano-surface structures based on vapor-deposited polymers

Vapor-Deposited Polymer Films and Structure: Methods and Applications

Low Wear and Low Friction DLC Coating With Good Adhesion to CoCrMo Metal Substrates

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