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A few words about Nanotechnology....

Nanotechnology, the revolutionary science and art of manipulating matter at the atomic or molecular scale. Nanotechnology is not just about the size of very small things. More important, it is about structure and the ability to work. Research in areas related to nanomaterial is needed to develop manufacturing techniques, in particular, is a synergy of top-down with bottom-up processes.

When a matter is as small as 1 to 100 nanometers, many of its features will easily change and form into many different unique conditions both different from macro-matters and single atom due to the quanta effect, regional confinement of matter, and huge surface or interface effects. The final objective of nanometer technology is to produce products of special functions with new physical and chemical features by making atoms, molecules and matters presenting their features directly in the length of a nanometer: t he strength of ten times of iron could be very light, all information in a library could be stored in a chip the size as a piece of square sugar, and tumors the sizes of only several cells can be detected.

The US Business Weekly listed nanometer technology as one of the three key areas in the 21st century . From 1999, the US government decided to put the research in nanometer technology into one of the 11 key areas in the first ten years of the new century. In February 2000, US president Bill Clinton announced that the US Federal Government would invest 495 million dollars to set up a work group and put forth a research report on the promotion, saying that it will lead to the next industrial revolution as a top priority.

Titanium Dioxide's photocatalytic characteristic is greatly enhanced due to the advent of nanotechnology. At nano-scale, not only the surface area of titanium dioxide particle increases dramatically but also it exhibits other effects on optical properties and size quantization. An increased rate in photocatalytic reaction is observed as the redox potential increase as the size decreases. Energy from any ambient light source can be used effectively as the energy source of photocatalysis instead of UV light.

Technology Comparison:

HEPA (High Efficiency Particle Arresting) Filter

Most widely known method for purifying air. Depending on the filter size, it can clean up to 99.99% of particulate in the air with proper ventilation. They are not effective on treating mold, mildew, bacteria, and other fungi.

Electrostatic Filtration

Another filtration system with a negatively charged surface is used to attract particulate. In comparison to most HEPA systems it is more effective in trapping smaller micron particulate and effective in clearing smoke from the air. Low levels of ozone may be produced which can neutralize most mold, mildew, bacteria, and other fungi that comes in contact with the filter.

Ionization

Also uses a negatively charged surface to produce and expels an abundance of negative ions and cause suspended particles to cling to walls, floors, and other surfaces . Most ionizers are effective in settling dust and particulate out of our breathing space.

Ozone

Ozone is a very powerful oxidizer that will neutralize odors, mold, mildew, bacteria, and other fungi. This technology is commonly used in flood and fire restoration. Ozone is found to be effective because it works on the problem at the source and air does not have to be pulled through the unit for treatment.

UV Germicidal Lamps

Commonly used for disinfecting purposes. This technology is effective in sterilizing air and surfaces that come in contact with the UV light. UV has been proven in both air and water applications to inactivate bacteria and viruses to prevent them from reproducing.

Photocatalysis

Using light to react with a catalyst resulting in oxidation. This is found to be effective in destroying mold, mildew, bacteria, other fungi, dust mites, and many odors. This technology is produced with an Ozone/UV lamp set in a variety of combinations. When this type of photocatalysis is combined with the natural humidity in indoor air it creates hydroxyl radicals and super oxide ions that are effective in combating bacteria, fungi and VOC. This method is also a pro-active approach that goes to the source for treatment.