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        Nano functional coatings

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1. Nano porous ceramic functional coatings

Over the last 10 years, we have developed a series of porous ceramic coatings that have narrow pore size distributions, e.g. from 10 to 30 nm. On the surfaces of the nano-porous ceramic coatings, functional chemicals such as self-cleaning, bacteria-static, photo-catalytic compounds (such as zinc oxide and tungsten oxide), and bio-chemicals that disable virus and bacteria can be immobilised or attached permanently. The nano-porous structure acts not only as a support substrate, but also as a nano-scale template, allowing the functional chemicals to be formatted into nanometre forms. As a result, the the functionality of the chemicals are enhanced by many times. 

This functional coating can enhance the chemical process, and expression of a chemical reaction, e.g. a virus or antibody detection for diagnosis applications. 

If you have a an application in mind, please contact us.  


2. Self cleaning and bacterial-static and virus - static (killing) coatings

These novel functional coatings can be coated onto substrates of glass, metals and ceramics. Quite often, for a customised applications , a joint quick development may be needed to establish a satisfactory solution. The right side photo illustrates  the action of preventing bacteria by a permanent coating (the circled area where the coating is active shows no bacteria growth). During this difficult pandemic time, if you need to develop something like this, please let us know.

3. Sol-gel coatings: 

This technique is to coat a substrate with a ceramic in liquid form. After curing through a hydrolization process and firing, the liquid becomes a solid ceramic phase. The famous self-cleaning glass can be produced with this method. 

Alumina and titanium oxide coatings as thin as 1 micron can be applied to various materials such as steel and ceramics. Other functional coatings (like TiO2) may also be applied via sol-gel technique.

Please let us know  if you need to coat article with this method.





 New technology developments:

 Nano porous ceramic substrates with nano-pore surface structure, a unique miniature platform/biochip for chemical and bio-chemical immobilisation.