Patent ID: 8513014

Claim:
A method for fabricating scaffolds to culture cells, comprising: mixing a gas with a liquid including a crosslinkable material in solution to generate gas bubbles encapsulated by the liquid having respective diameters in a micrometer range by using an inner micropipette to guide the gas and an outer micropipette that encloses the inner micropipette to form a space between the outer and inner micropipettes to guide the liquid to mix with the gas to cause the gas bubbles encapsulated by the liquid to be formed as a single stream of gas bubbles, one gas bubble at a time, to render the gas bubbles uniform in size; collecting the generated gas bubbles in a volume to assemble the collected gas bubbles relative to one another in form of a foam comprising the bubbles encapsulated by the liquid; and causing the crosslinkable material to cross-link to transform the gas bubbles into a matrix of cavities inside the foam which functions as a scaffold providing cavities for cell growth.