demonstration

[Demonstration 1] You can draw water with a tea strainer.

After coating a tea strainer with super hydrophobic coating, if you pour water into it, you will notice that some of the water remains in the strainer.

[Demonstration 2] Oil and water can be easily separated.

When an oil-water liquid, with the oil on top and the water on the bottom, is poured into a tea strainer coated with super hydrophobic coating, the oil is poured in first and passes through the strainer.
Then, when the water is poured, you will notice that some of the water remains in the tea strainer.
This means that oil and water can be separated easily.

[Demonstration 3] You can easily determine the water level of a river.

When measuring the water level of a river with a water level gauge made of wood, etc., there is a method of monitoring with a camera from a slightly distant location. In this case, it is common to monitor with an infrared camera so that it can be monitored even at night.
When the weather is fine, you can easily distinguish the water surface because the temperature of the water and the temperature of the water level gauge are different.
However, when it rains, the water level gauge gets wet and becomes almost the same as the water temperature, making it difficult to determine the water surface. The pattern is shown on the HIREC unpainted plate on the right side of the thermographic image below.
On the other hand, the board on the left, which is coated with HIREC, repels water, so it does not get wet in the rain.

[Demonstration 4] Insulation of HIREC

Copper wire is coated with HIREC and is not affected by water resistance even when immersed in water.

When two copper wires are attached to a glass plate and the "super hydrophobic coating HIREC" is applied on top of them, and the entire glass plate is immersed in water and the resistance between the copper wires is measured with a megaohm ohm meter, there is no change in resistance and the wires remain insulated.

 

For example, applying HIREC on a printed circuit board prevents damage due to deterioration of insulation due to condensation.

* HIREC insulation is over 1000MΩ.