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Related Concept Videos

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...

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Updated: May 11, 2026

Tools for Surface Treatment of Silicon Planar Intracortical Microelectrodes
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Improving biocompatibility by surface modification techniques on implantable bioelectronics.

Peter Lin1, Chii-Wann Lin, Raafat Mansour

  • 1Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.

Biosensors & Bioelectronics
|April 30, 2013
PubMed
Summary
This summary is machine-generated.

Controlling protein adsorption is crucial for implantable bioelectronic devices. Surface modifications using hydrophilic polymers or hydrophobic nanostructures can significantly improve device longevity and function.

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Last Updated: May 11, 2026

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Published on: December 3, 2020

Area of Science:

  • Biomaterials Science
  • Bioelectronics Engineering
  • Surface Chemistry

Background:

  • The interface between implantable bioelectronic devices and biological environments is critical for in vivo performance.
  • Non-specific protein adsorption initiates device degradation, compromising long-term functionality.
  • Effective control of protein adsorption is essential for preserving the performance of implanted bioelectronics.

Purpose of the Study:

  • To review major approaches for minimizing protein adsorption on implantable bioelectronic device surfaces.
  • To discuss surface modification techniques that enhance device longevity.
  • To highlight advancements in biofouling prevention for medical implants.

Main Methods:

  • Surface coating with electrically neutral hydrophilic polymers to create steric repulsion and hydration layers.
  • Surface patterning using hydrophobic nanostructures via photolithography to achieve superhydrophobic surfaces with large slip lengths.
  • Exploration of emerging zwitterionic polymer coatings demonstrating ultralow biofouling.

Main Results:

  • Hydrophilic polymer coatings act as physical and energetic barriers, reducing protein adsorption.
  • Superhydrophobic surfaces created by nanostructure arrays minimize protein adhesion.
  • Zwitterionic polymer coatings show promise for achieving ultralow biofouling characteristics.

Conclusions:

  • Surface modification techniques are vital for improving the long-term functionality of implantable bioelectronics.
  • Minimizing protein adsorption addresses key challenges in diagnosing and treating chronic neurological and cardiovascular diseases.
  • Advanced surface engineering holds potential for next-generation bioelectronic medical devices.