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Related Concept Videos

Biofilms01:29

Biofilms

Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
Bacterial Signaling01:30

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
Microbial Corrosion01:24

Microbial Corrosion

Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...
Surface Membrane Barriers01:18

Surface Membrane Barriers

The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
Antimicrobial Proteins01:23

Antimicrobial Proteins

Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
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Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...

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Related Experiment Video

Updated: Jun 1, 2026

High-throughput Identification of Bacteria Repellent Polymers for Medical Devices
10:43

High-throughput Identification of Bacteria Repellent Polymers for Medical Devices

Published on: November 5, 2016

Plasma-modified biomaterials for self-antimicrobial applications.

Shuilin Wu1, Xiangmei Liu, Amy Yeung

  • 1Department of Physics & Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.

ACS Applied Materials & Interfaces
|June 15, 2011
PubMed
Summary

Plasma treatment creates self-antimicrobial biomaterials by modifying surface properties. This enhances compatibility for tissue engineering and medical uses, with surface chemistry and energy being key to antibacterial effects.

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Area of Science:

  • Biomaterials Science
  • Surface Chemistry
  • Plasma Physics

Background:

  • Surface compatibility and antibacterial properties are vital for biomaterials in tissue engineering and medicine.
  • Plasma-assisted technologies offer a successful approach to enhance these biomaterial characteristics.

Purpose of the Study:

  • To review recent developments in self-antimicrobial biomaterials using plasma-based surface modification.
  • To highlight the role of tailored surface characteristics in achieving antibacterial effects.

Main Methods:

  • Plasma treatment applied to various materials (polymers, metals, ceramics).
  • Analysis of surface characteristics including roughness, microstructure, chemistry, and energy.
  • Mechanistic studies to identify factors responsible for antibacterial activity.

Main Results:

  • Self-antibacterial surfaces were successfully produced on diverse biomaterials via plasma treatment.
  • Key surface properties like roughness, chemistry, and hydrophilicity can be precisely controlled.
  • Interfacial physiochemical processes, biocidal agents, and surface free energy were identified as primary drivers of antibacterial effects.

Conclusions:

  • Plasma-based surface modification is an effective strategy for developing self-antimicrobial biomaterials.
  • Tailoring surface physiochemistry through plasma processing is crucial for enhancing biomaterial performance in medical applications.
  • Understanding the interplay of surface properties is essential for designing advanced biomaterials.