Method for manufacturing bubbles

Abstract

A method, for manufacturing bubbles of the present invention includes: mixing and aqueous liquid 10 with a gas 3 ; and applying vibration (an external force) to the aqueous liquid 10 and the gas 3 to generate a plurality of bubbles 1 constituted with the gas in the aqueous liquid 10 . A diameter of the bubbles 1 to be generated in adjusted by changing a kind and/or an amount of an additive to be added to the aqueous liquid 10 . In this way, it is possible to provide a method for manufacturing bubbles that makes it possible to wasily and reliably adjust the diameter of the bubbles to be generated. The additive to be added to the aqueous liquid 10 includes at least on kind of additive among a protein, salts, and sugars.

1 . A method for manufacturing bubbles, comprising:
 mixing an aqueous liquid with a gas; and   applying an external force to the aqueous liquid and the gas to generate a plurality of bubbles constituted with the gas in the aqueous liquid,   wherein a diameter of the bubbles to be generated is adjusted by changing a kind and/or an amount of an additive to be added to the aqueous liquid.   
     
     
         2 . The method for manufacturing bubbles according to  claim 1 ,
 wherein the additive to be added to the aqueous liquid includes at least one kind of additive among a protein, salts, and sugars.   
     
     
         3 . The method for manufacturing bubbles according to  claim 1 ,
 wherein the amount of the additive added to the aqueous liquid is in the range of 0 to 50 w/v %.   
     
     
         4 . The method for manufacturing bubbles according to  claim 1 ,
 wherein in a case where the additive is added to the aqueous liquid, a molecule of the additive and/or a component derived from the additive exist in a portion of a gas-liquid interface which is a surface of each of the bubbles and is between the gas and the aqueous liquid.   
     
     
         5 . The method for manufacturing bubbles according to  claim 1 ,
 wherein the external force is vibration.   
     
     
         6 . The method for manufacturing bubbles according to  claim 5 ,
 wherein the aqueous liquid and the gas are added into a container, and   the container is vibrated such that the aqueous liquid repeatedly collides with an inner surface of the container.   
     
     
         7 . The method for manufacturing bubbles according to  claim 6 ,
 wherein the container has a long shape and is vibrated to reciprocate in a longitudinal direction of the container and/or rotate mainly in the longitudinal direction.   
     
     
         8 . The method for manufacturing bubbles according to  claim 6 ,
 wherein the container has a long shape and is vibrated to reciprocate in a transverse direction of the container and/or rotate mainly in the transverse direction.   
     
     
         9 . The method for manufacturing bubbles according to  claim 6 ,
 wherein the container is vibrated in a state where an internal pressure of the container is higher than 1.0 atm.   
     
     
         10 . The method for manufacturing bubbles according to  claim 6 ,
 wherein the container is vibrated at a number of revolution of equal to or higher than 5,000 rpm.