Thin Film Of Water

The bright colors seen in an oil slick floating on water or in a sunlit soap bubble are caused by interference.

Thin film of water. Chemical solution deposition csd or chemical bath deposition cbd uses a liquid precursor usually a solution of organometallic powders dissolved in an organic solvent. This film can also form when the pool s filtration system doesn t operate correctly. Thus the effect is known as thin film interference. Water adsorbs dissociatively on both surfaces.

And the film can have a profound effect on the physical and chemical properties of the substrates it covers. The brightest colors are those that interfere constructively. This interference is between light reflected from different surfaces of a thin film. In many experiments with physical apparatus it is desirable to know how the thickness of such a film is related to the properties of the liquid and to the speed of withdrawal.

Thin film water is ubiquitous. It coats insulators even ice under ambient conditions. To be effective the filter needs to run for at least 12 hours per day to circulate chemicals and filter out dirt and debris. A film can form on the water from a combination of body oils lotions and dirt that build up due to heavy usage.

The direct measurement of thin film water by infrared spectroscopy is described. This is a relatively inexpensive simple thin film process that produces stoichiometrically accurate crystalline phases.