Surface modification by plasma etching impairs early vascularization and tissue incorporation of porous polyethylene (Medpor®) implants

2015 ◽  
Vol 104 (8) ◽  
pp. 1738-1748 ◽  
Author(s):  
Matthias W. Laschke ◽  
Victor A. Augustin ◽  
Fadime Sahin ◽  
Dieter Anschütz ◽  
Wolfgang Metzger ◽  
...  
Keyword(s):  
Surface Modification ◽  
Plasma Etching ◽  
Porous Polyethylene ◽  
Tissue Incorporation

Plasma etching treatment for surface modification of boron-doped diamond electrodes

2007 ◽  
Vol 52 (11) ◽  
pp. 3841-3848 ◽  
Author(s):  
Takeshi Kondo ◽  
Hiroyuki Ito ◽  
Kazuhide Kusakabe ◽  
Kazuhiro Ohkawa ◽  
Yasuaki Einaga ◽  
...  
Keyword(s):  
Surface Modification ◽  
Plasma Etching ◽  
Diamond Electrodes ◽  
Boron Doped Diamond ◽  
Boron Doped

Surface Modification by Plasma Etching and Plasma Patterning

1997 ◽  
Vol 101 (46) ◽  
pp. 9548-9554 ◽  
Author(s):  
Liming Dai ◽  
Hans J. Griesser ◽  
Albert W. H. Mau
Keyword(s):  
Surface Modification ◽  
Plasma Etching

Surface modification and etch process optimization of fused silica during reaction CHF3–Ar plasma etching

Optik ◽  
2016 ◽  
Vol 127 (1) ◽  
pp. 206-211 ◽  
Author(s):  
Laixi Sun ◽  
Huang Jin ◽  
Xin Ye ◽  
Hongjie Liu ◽  
Fengrui Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Process Optimization ◽  
Plasma Etching ◽  
Fused Silica ◽  
Ar Plasma

scholarly journals Surface Modification of Electroosmotic Silicon Microchannel Using Thermal Dry Oxidation

2018 ◽  
Author(s):  
Tuan Norjihan Tuan Yaakub ◽  
Jumril Yunas ◽  
Rhonira Latif ◽  
Azrul Azlan Hamzah ◽  
Mohd Farhanulhakim Razip Wee ◽  
...  
Keyword(s):  
Surface Modification ◽  
Oxide Layer ◽  
Plasma Etching ◽  
Sio2 Layer ◽  
Channel Width ◽  
Channel Cross Section ◽  
Microchannel Array ◽  
Thermal Chamber ◽  
Dry Oxidation

A simple fabrication method in the surface modification of electroosmotic silicon microchannel using thermal dry oxidation is presented. The surface modification is done by coating the silicon surface with a silicon dioxide (SiO2) layer using thermal oxidation process. The process is aimed not only to improve the surface quality of the channel to be suitable for electroosmotic fluid transport but also to reduce the channel width using a simple technique. Initially, the parallel microchannel array with dimensions of 0.5 mm length and width ranging from 1.8 µm to 2 µm are created using plasma etching on the 2x2 cm <100> silicon substrate. The oxidation of silicon channel in a thermal chamber is then conducted to create the SiO2 layer. The layer properties and the quality of the surface are analyzed using SEM and surface profiler, respectively. The results show that the maximum oxidation growth rate occurs in the first 4 hours of oxidation time and the rate decreases by time as the oxide layer becomes thicker. It is also found that the surface roughness is reduced with the increase of process temperature and oxide thickness. The scallop effect on the vertical wall due to plasma etching process also improved with the presence of the oxide layer. After the oxidation, the channel width is reduced by ~40%. The demonstrated method is suggested for the fabrication of a uniform channel cross section with high aspect ratio in sub-micro and nanometer scale that will be useful for the electroosmotic flow (EOF) manipulation of the biomedical fluid sample.

scholarly journals Surface Modification of Porous Polyethylene Implants with an Albumin-Based Nanocarrier-Release System

Biomedicines ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1485
Author(s):  
Jonas Eckrich ◽  
Niklas Hoormann ◽  
Erik Kersten ◽  
Keti Piradashvili ◽  
Frederik R. Wurm ◽  
...  
Keyword(s):  
Surface Modification ◽  
Release Kinetics ◽  
Dip Coating ◽  
Porous Polyethylene ◽  
Implant Surface ◽  
High Molar Mass ◽  
Dorsal Skinfold Chamber ◽  
Factor Release

Background: Porous polyethylene (PPE) implants are used for the reconstruction of tissue defects but have a risk of rejection in case of insufficient ingrowth into the host tissue. Various growth factors can promote implant ingrowth, yet a long-term gradient is a prerequisite for the mediation of these effects. As modification of the implant surface with nanocarriers may facilitate a long-term gradient by sustained factor release, implants modified with crosslinked albumin nanocarriers were evaluated in vivo. Methods: Nanocarriers from murine serum albumin (MSA) were prepared by an inverse miniemulsion technique encapsulating either a low- or high-molar mass fluorescent cargo. PPE implants were subsequently coated with these nanocarriers. In control cohorts, the implant was coated with the homologue non-encapsulated cargo substance by dip coating. Implants were consequently analyzed in vivo using repetitive fluorescence microscopy utilizing the dorsal skinfold chamber in mice for ten days post implantation. Results: Implant-modification with MSA nanocarriers significantly prolonged the presence of the encapsulated small molecules while macromolecules were detectable during the investigated timeframe regardless of the form of application. Conclusions: Surface modification of PPE implants with MSA nanocarriers results in the alternation of release kinetics especially when small molecular substances are used and therefore allows a prolonged factor release for the promotion of implant integration.

Surface modification and fibrovascular ingrowth of porous polyethylene anophthalmic implants

2007 ◽  
Vol 15 (3) ◽  
pp. 256-262 ◽  
Author(s):  
Hee Seok Yang ◽  
Kwideok Park ◽  
Jun Sik Son ◽  
Jae-Jin Kim ◽  
Dong Keun Han ◽  
...  
Keyword(s):  
Surface Modification ◽  
Porous Polyethylene ◽  
Fibrovascular Ingrowth
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