PHYSICS: Flash Work on 3D Ministructures

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Science  14 Sep 2001:
Vol. 293, Issue 5537, pp. 1955a
DOI: 10.1126/science.293.5537.1955a

Light-induced polymerization of photosensitive polymers has already led to the possibility of fabricating intricate micrometer-sized three-dimensional (3D) structures. The real potential will now lie in forming optically active structures. Although postfabrication infiltration of a polymerized resin with fluorescent chromophores can render the structure optically active, doping efficiency tends to be rather low and the resulting optical properties poor.

Sun et al. describe a polymer resin uniformly doped with molecules of the fluorescent dye rhodamine, which can form fluorescent 3D structures. The flexibility offered by being able to tune polymer and dye properties should prove useful for integrating designed optical activity and a controlled fabrication process to produce miniature structures with specific functionality. — ISO

Appl. Phys. Lett. 79, 1411 (2001).

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