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3D Printed Quantum Dot Light-Emitting Diodes

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As part of a project demonstrating new 3-D printing techniques, Princeton researchers have embedded tiny light-emitting diodes into a standard contact lens, allowing the device to project beams of colored light.

Michael McAlpine, the lead researcher, cautioned that the lens is not designed for actual use — for one, it requires an external power supply. Instead, he said the team created the device to demonstrate the ability to "3-D print" electronics into complex shapes and materials.


Michael McAlpine, an assistant professor of mechanical and aerospace engineering at Princeton, is leading a research team that uses 3-D printing to create complex electronics devices such as this light-emitting diode, shown here printed on curved glass. (Photos by Frank Wojciechowski)

NanoLetters - 3D Printed Quantum Dot Light-Emitting Diodes

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