Ozone, a compound of three oxygen atoms, is a highly efficient cleaning. When coupled with a UV light source in the ozone layer, clean almost any surface quickly and efficiently. This was confirmed by years of tests and examinations.
In 1970, he began a series of experiments that demonstrate the effectiveness of the UV cleaning, and finally, the combination of UV and ozone. A first experiment in 1972 has shown that UV light combinedgenerated with a filter and a quartz mercury lamp, ozone, was able to help successfully depolymerization of polymer photoresist.
Uv Filter
Another experiment was to demonstrate the ability of UV radiation and ozone, hydrocarbons, and glass surfaces clean gold. The results showed that hydrocarbons absorbed from these areas could be removed after 15 hours of exposure to UV / ozone mixture, and that the store would be the areas under the filter, whichCleanliness are maintained indefinitely.
Another series of tests at the end of 1970 has shown the ability of a UV / ozone mixture on a surface in less than a minute to clean under optimal conditions. Since the UV / ozone use is increasing in many areas.
To determine the optimal conditions for the UV / ozone cleaning, the experimenters started with the creation of two UV cleaning boxes, aluminum. Both boxes contain mercuryLamps that are used to generate different wavelengths of light that would be as a variable in the experiment. Only the light that is absorbed can be useful in cleaning, it is important to determine which wavelengths are absorbed efficiently.
Two different wavelengths in the experiment were approved by the majority-184 .9 nm and 253.7 nm light from three different envelope materials (quartz, high silica glass and glass) at each wavelength. Quartz could lead tothe creation of two 184.9nm and 253.7 nm, while the ball is unable to produce. Production of both wavelengths is significant. Ozone is created at 184.9nm, while the presence of 253.7 nm, helps in the destruction of ozone. If both are present, then there is a continuous creation and destruction of ozone, which in turn promotes the formation of atomic oxygen, an oxidizing agent strong.
Combining ozone and ultraviolet rays to be a strongAre cleaner, the investigators discovered that the gross contamination before the process should be removed. Cleaning can remove contaminants such as dust, which can not be cleaned with ozone and UV rays. It also keeps impurities from forming a protective shield against UV rays for the excessive accumulation.
Removing contamination with large washing process, the phase UV and ozone can make it more difficult to reach, smaller,Particles of dirt. The experiment shows that the various methods, whether it be water, solvent, or a combination will be.
Depending on the level of contamination and the distance from the source of the mixture of cleaning, the cleaning process can be remarkably fast. To measure the experimenters put a piece of material to be cleaned five millimeters from the light source in the first field in the second box and placed a piece of cloth to 8cm. The piece was 5 mmcleaned 10 times faster than the sample at 8 cm.
With a combination of wavelengths at 184.9nm and 253.7 nm using a quartz filter, a small distance from the light source and a cleaning of the sample materials in about 10 seconds had to be cleaned. The materials reached a particularly high level of cleanliness in this procedure, which produces almost atomically smooth surfaces, such as Auger electron spectroscopy (AES), electron spectroscopy for chemical analysis of evidence(ESCA) and ion scattering spectroscopy / secondary ion mass spectroscopy (ISS / SIMS) studies.
This has many applications. It can be used to clean semiconductors, as it was in the experiment. It can also be effective in purifying water. The combination of cleaning has the ability to remove water from toxic contaminants such as ethanol, has presented the medical waste, and pesticides. Further tests on the wastewater with UV / ozone, have shown that in collaboration with the two mostmore effectively on their own.
This cleaning method works well on many surfaces provided the equipment is used. As long as the surface to be cleaned had gross contamination can be removed, properly exposed to light, and can be cleaned, given the optimal amount of time, this type of cleaning a surface almost completely clean is to produce a reading.
UV-ozone cleaning - Introduction and basics