She is working on focusing the transmitted beam into a much smaller area, so that less energy is lost along its way.

ECONOMIST: Archaeology

We took down a mirror above her mantelpiece because we were told that a beam could be transmitted into the room to listen to a conversation in that room.

BBC: Full text: Burrell interview

Information about each layer is transmitted from the computer to a laser beam, which melts the PCL into a 3-D structure.

CNN: 3-D printer helps save dying baby