Your vital signs, on camera

You can check a person’s vital signs -- pulse, respiration and blood pressure -- manually or by attaching sensors to the body. But a student in the Harvard-MIT Health Sciences and Technology program is working on a system ...

Lightwave electronics at sharp metal tips

(PhysOrg.com) -- Scientists at the Max Planck Institute of Quantum Optics control for the first time the emission of electrons from metal tips with femtosecond lasers alone.

Metamaterials provide active control of 'slow light' devices

LANL researchers and collaborators have made the first demonstration of rapidly switching on and off "slow light" in specially designed metamate­rials at room temperature. Metamaterials are assemblies of multiple individual ...

page 8 from 19