Nanobubble Technology


Small bubbles, Big changes

Our Innovative Technology

Nanobubbles is an exciting new technology that is revolutionizing industries across the world in the treatment of water and protection of natural resources. Our patented SIO technology generates trillions of bubbles with a diameter smaller than the wavelength of light into liquids to deliver remarkable features that ordinary bubbles do not possess. Our bubbles are electrically charged and stay suspended in liquids for months to accelerate the growth of plants, prevent biofilm and mineral scale formation, improves filtration, solubility, detergency, lubricity properties and much more.

What are Nanobubbles?

Nanobubbles are tiny, long-lasting, gas-containing cavities in aqueous solutions. Due to their unique physical and mechanical characteristics they can be used to optimize water resources, improve processing techniques, increase production, and offer scalable solutions in the various fields of science and technology, including industrial, biological, and medical fields.

Unique Nanobubble Characteristics

Bubble size

Nanobubbles are generally classified as being less than 200 nanometers (nm) in diameter. Unlike larger size bubbles that increase in size, rise rapidly and burst at the water surface, nanobubbles remain stable in water for an extended period of time due to their strong negative surface charge and neutral buoyancy.

The SIO patented bulk Nanobubble generation method consistently produces high density solutions of optimally sized nanobubbles averaging 85 nm in diameter based on independent laboratory testing using Malvern’s NanoSight Nanoparticle Tracking Analysis software. Nanobubbles of this size are stable in liquid because they have reached equilibrium with bubble surface tension, internal pressure, surrounding liquid pressure, surface charge, and their environment.

In partnership with the Fluid Engineering Laboratory of Tokyo Metropolitan University The results of research and experiments are reflected in product manufacturing.

Neutral Buoyancy

Nanobubbles are neutrally buoyant and can remain suspended in liquid for months and due to the Brownian Motion will travel randomly throughout the body of water. This unique behavior enables nanobubbles to provide a homogeneous distribution of gas throughout the water column and efficiently aerate the entire body of water.
__Neutral buoyancy

Smaller Bubbles, Greater Reactivity

The surface area between bubbles in water filled with nanobubbles is much greater than water filled with larger bubbles. This increase in the surface area allows for higher gas mass transfer rates and increases the efficiency of chemical reactions with any dissolved or suspended components in the water.
__Bubble size
One ml of 100 nm diameter nanobubbles has 1000 times more surface area than one ml of 0.1 mm diameter bubbles

Surface Charge

One of the important properties of nanobubbles is the electrical charges on the bubble surface which determines the interaction of nanobubbles and how they interact with other materials such as solid particles or oil droplets. The electrical potential of a particle in a colloidal system can be expressed by the Zeta-potential.

High and Low Zeta Potential

The zeta potential is measured in mV and it measures the magnitude of the attraction between particles and bubbles or electrostatic repulsion. It is a useful indicator for understanding the state of the nanoparticle surface charge and in predicting the long-term stability of dispersions.

A high zeta potential signifies stability to nanobubbles in a suspension due to repulsion among the bubbles. Conversely, a lower zeta potential leads to coagulation and is less stable.

Nanobubbles have a high negative surface charge that keeps them stable in liquid and enables them to continuously participate in and stimulate physical, biological, and chemical interactions.


Gas Reserve

The neutral buoyancy and negative surface charge of SIO nanobubbles allows them to remain in suspension for months creating a reserve of entrained oxygen. So as oxygen is consumed from the water the nanobubbles rapidly diffuse more oxygen into the water to maintain elevated dissolved oxygen levels. This additional gas reserve, estimated up to 20% over the saturation point provides highly efficient and consistent gas transfer across a broad range of water treatment processes.

Drag Reduction

An electrical double layer is a structure of two parallel layers of opposite charges that appear on a surface of an object when it is exposed to a fluid.

Often a solid surface will carry a negative charge and attract a second layer of positive ions to the surface charge.

Nanobubbles in aqueous solutions carry a strong negative charge and are attracted to the electrical double layer and replaces the liquid-solid interfaces with gas-solid interfaces. This in turn increases the effective slip length and reduces the frictional drag of liquids and improves lubricity.