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Anti-bacterial patterned surfaces and methods of making the same

A surface characterization, metal surface technology, applied in the direction of nanostructure fabrication, botanical equipment and methods, nanotechnology for materials and surface science, which can solve expensive and time-consuming problems

Active Publication Date: 2018-11-09
AGENCY FOR SCI TECH & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, top-down approaches can be time-consuming and expensive and are limited to applications on surfaces of specific materials (e.g., those susceptible to etching or other forms of photolithographic methods)

Method used

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  • Anti-bacterial patterned surfaces and methods of making the same
  • Anti-bacterial patterned surfaces and methods of making the same
  • Anti-bacterial patterned surfaces and methods of making the same

Examples

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Embodiment Construction

[0029] Exemplary non-limiting embodiments of substrates comprising a plurality of integrally formed surface features will now be disclosed.

[0030] In embodiments, a substrate is provided that includes a plurality of integrally formed surface features that are micron-sized and / or nano-sized, each surface feature comprising a crystalline phase and at least one tip.

[0031] The disclosed substrates can be made from a variety of materials. For example, the substrate may comprise metal or polymer. In another example, the substrate can comprise at least one metal, one polymer, a mixture of metals, a mixture of polymers, or a mixture of polymers and metals.

[0032] In some embodiments, the disclosed substrates are capable of supporting the growth of a plurality of surface features on their surfaces. In one embodiment, the substrate is capable of supporting the growth of a salt of the substrate on its surface. Advantageously, the surface structure can be integrally formed by pr...

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Abstract

The present invention relates to a substrate comprising a plurality of integrally formed surface features, said surface features being micro-sized and / or nano-sized, said surface features comprising at least one pointed terminus. As a result of this unique surface, said substrate exhibits a biocidal activity because the terminal ends of said surface feature pierce through cell membrane of any microbial cell that comes into contact with the substrate, thereby causing cell deformation and lysis. The present invention also relates to a method producing said substrate. By a simple treatment of copper or zinc foil with a reagent solution comprising an alkali and an oxidizing agent, Cu(OH)2 nanotube arrays, CuO nano-blades and ZnO nano-needles are prepared. These surfaces are proven to be very effective in killing bacterial (such as E. coli) via a physical interaction.

Description

technical field [0001] The present invention generally relates to substrates comprising surface features having antimicrobial properties and methods of making the same. Background technique [0002] About 80% of infectious diseases caused by microorganisms are transmitted by contact, thus posing a serious threat to public health. Therefore, killing microorganisms on frequently touched surfaces is an effective way to avoid cross-infection. [0003] A common method of killing microbes on these surfaces is through chemical means, such as disinfectants. In another approach, antimicrobial surfaces are created to limit cross-infection by grafting or coating the surface with biocidal chemicals or disinfectants. However, microorganisms may evolve and develop resistance to current biocidal chemicals, necessitating the development of new chemicals. Therefore, killing by chemical means will cause secondary pollution. Therefore, these methods face problems such as increased resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/34B82B1/00B82B3/00C23C22/60C23C22/63B82Y5/00B82Y30/00B82Y40/00
CPCB82Y5/00B82Y30/00B82Y40/00C23C22/60C23C22/63A01N25/34A01N59/08A01N59/20
Inventor 张玉根衣光舜
Owner AGENCY FOR SCI TECH & RES
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