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University of Pennsylvania

Jagged-1 Protein Stimulates Bone Growth

Scientists from the University of Pennsylvania have discovered that a protein called Jagged-1 stimulates human stem cells to differentiate into bone-producing cells. Philadelphia — Researchers…

The First All-optical Nanowire Switch

Building on their earlier research, scientists at the University of Pennsylvania have made the first all-optical photonic switch out of cadmium sulfide nanowires, an important…

Penn Researchers Build a Circuit with Light

Researchers at the University of Pennsylvania are pushing circuitry forward by replacing electricity with light. By moving to shorter wavelengths in the electromagnetic spectrum, they…