Plasma Polymerization
Plasma Polymerization - Related Videos
09:27
Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
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Cited by 1 •
2012
We have used plasma enhanced chemical vapor deposition to deposit thin films ranging from a few nm to several 100 nm on nano-sized particles of various materials. We subsequently etch the core material to produce hollow nanoshells whose permeability is controlled by the thickness of the shell. We characterize the permeability of these coatings to small solutes and demonstrate that these barriers can provide sustained release of the core material over several days.
06:45
Polymerization
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2023
Source: Vy M. Dong and Jan Riedel, Department of Chemistry, University of California, Irvine, CA Polymers are made from macromolecules, which are composed of repeating units (the so called monomeric units). In our modern world, polymers play an important role. One of the first important polymers was nylon, which is a polyamide. It found widespread application in tooth brushes and stockings.
12:15
In Vitro Polymerization of F-actin on Early Endosomes
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Cited by 3 •
2017
Early endosome functions depend on F-actin polymerization. Here, we describe a microscopy-based in vitro assay that reconstitutes the nucleation and polymerization of F-actin on early endosomal membranes in test tubes, thus rendering this complex series of reactions amenable to biochemical and genetic manipulations.
08:42
How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters
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Cited by 26 •
2015
This movie shows how an atmospheric plasma torch can be ignited by microwaves with no additional igniters and provides a stable and continuous plasma operation suitable for plenty of applications.
07:28
Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
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2015
A protocol for the high-throughput analysis of polymerization catalyst, chain transfer polymerizations, polyethylene characterization, and reaction kinetic analysis is presented.
FAQs
The precursor chemistry determines which molecular fragments and activated species are generated, while electrical power, pressure, and exposure time influence how those species reach the substrate and build the coating. Radicals and ions recombine and cross-link at the surface, so changing these variables can alter film composition and thickness. This control lets engineers tune surface properties without changing the material’s bulk properties.
Electrical energy fragments and activates organic precursor molecules, producing radicals and ions that participate in surface reactions. These species can recombine and cross-link after reaching the substrate, creating a polymer-like network rather than simply depositing intact precursor molecules. The resulting network helps produce conformal films whose chemical behavior and thickness can be adjusted through operating conditions.
Pressure is a key process variable because the technique can operate at low or atmospheric pressure. Engineers can therefore select the pressure regime as part of process design, while also adjusting power and exposure time. Together, these conditions influence the reactive environment and the resulting film composition and thickness, which is important for consistent surface modification across different substrates and applications.
A basic workflow begins by selecting an organic vapor or gas and positioning the target substrate for exposure. Electrical energy creates reactive species from the precursor, and radicals and ions then recombine and cross-link at the substrate surface. Engineers adjust precursor chemistry, power, pressure, and exposure time to control the resulting film’s composition, thickness, and surface performance.
Plasma polymerization can modify metals, polymers, glass, and other materials, making it adaptable to varied engineering surfaces. Because the coating forms from reactive species at the substrate, it can provide a surface treatment while preserving the underlying bulk material. This is useful when engineers need to change surface behavior without replacing the substrate or substantially altering its internal properties.
These coatings can be designed to tune wettability, adhesion, barrier performance, biocompatibility, and chemical resistance. Such surface-property control supports applications in biomedical devices, microelectronics, packaging, and sensors. The method is especially relevant when a component needs a specialized interface or protective surface while retaining the mechanical or structural characteristics of its original material.