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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...
Surface Active Agents01:27

Surface Active Agents

Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
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...

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Related Experiment Video

Updated: May 20, 2026

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
10:52

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

Published on: March 29, 2018

Liquid-infused structured surfaces with exceptional anti-biofouling performance.

Alexander K Epstein1, Tak-Sing Wong, Rebecca A Belisle

  • 1School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA.

Proceedings of the National Academy of Sciences of the United States of America
|August 1, 2012
PubMed
Summary

Slippery Liquid-Infused Porous Surfaces (SLIPS) effectively prevent bacterial biofilm attachment for extended periods. These novel surfaces offer a durable, low-cost solution against persistent biofilm threats in various environments.

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Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
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Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

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Related Experiment Videos

Last Updated: May 20, 2026

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
10:52

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

Published on: March 29, 2018

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
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Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

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Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
06:14

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Published on: September 11, 2018

Area of Science:

  • Materials Science
  • Microbiology
  • Surface Chemistry

Background:

  • Bacteria form resilient biofilms on surfaces, posing significant challenges in healthcare and industry.
  • Existing biofilm prevention methods offer only temporary protection against bacterial adhesion.
  • Mature biofilms are notoriously difficult to treat and eradicate.

Purpose of the Study:

  • To evaluate the efficacy of Slippery Liquid-Infused Porous Surfaces (SLIPS) in preventing bacterial biofilm formation.
  • To compare the anti-biofilm performance of SLIPS against conventional surfaces and state-of-the-art treatments.
  • To assess the stability and potential applications of SLIPS as an antibiofilm solution.

Main Methods:

  • Fabrication of SLIPS with immobilized fluorinated oil on structured substrates.
  • Testing biofilm attachment of Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli on SLIPS under static and flow conditions.
  • Comparative analysis with polytetrafluoroethylene, nanostructured superhydrophobic surfaces, and PEGylated surfaces.
  • Assessment of SLIPS stability in various environmental conditions (pH, salinity, UV, submerged).

Main Results:

  • SLIPS demonstrated exceptional prevention of biofilm attachment, exceeding 96% for tested bacterial species over 7 days.
  • Significantly outperformed conventional and nanostructured surfaces, showing up to 35 times greater biofilm reduction than PEGylated surfaces.
  • Biofilm detachment was observed under mild flow conditions due to the non-adhesive liquid interface.
  • SLIPS maintained efficacy and stability across diverse and harsh environmental conditions.

Conclusions:

  • SLIPS provide a highly effective and durable solution for preventing bacterial biofilm formation.
  • The unique slippery surface properties of SLIPS inhibit bacterial adhesion and facilitate removal.
  • SLIPS represent a promising, low-cost, and versatile antibiofilm technology for broad applications.