Several multi-component jetting systems form particles having coaxial geometry, such as electrospraying and electospinning. Such systems typically employ capillaries having outer and inner liquid feeding channels creating core-shell geometry particles. However, it would be desirable to have more versatile methods of forming nanometer-sized multiphasic particles with a wide variety of compositions. Jetting system methods providing greater processing control and improved ability to form and control various particle morphologies and geometries would be desirable. Additionally, provision of optical or visual distinctiveness within anisotropic multiphasic particles would facilitate use in a variety of electronic display applications.
Researchers at the University of Michigan have developed methods and compositions forming multiphasic colorant nano-components (MPCs), with at least two phases and at least one colorant. The MPCs are formed by methods of electrified jetting of polymers and either or both of the first or second liquid streams can comprise a colorant. The method further includes exposing at least a portion of the composite stream to an electric force field sufficient to form a solid nano-component and in certain aspects, the two phases are optically or visually distinct from one another. See also UM File 2932.
Applications and Advantages
- Visual, optical, and electronic displays, including in paints, inks, coatings, plastics, textiles, pixels, or electronic paper
- Wider field of applications with colorant technology