Mac_Daddy - Slashdot User

First Membrane Controlled By Light Developed 33

Posted by timothy on Sunday August 01 2010, @02:54PM
from the my-eyelid-aside dept.

An anonymous reader writes with this excerpt: "A new membrane developed at the University of Rochester's Laboratory for Laser Energetics blocks gas from flowing through it when one color of light is shined on its surface, and permits gas to flow through when another color of light is used. It is the first time that scientists have developed a membrane that can be controlled in this way by light."

Verifiable Elections via Cryptography

Submitted by on Sunday November 05 2006, @04:40PM

An anonymous reader writes "Cryptographer David Chaum and his research team have a new voting protocol which allows users to verify that their vote has been correctly cast and counted. This is enabled using a surprisingly low-tech technique of cryptographic secret sharing. The secret — your marked ballot — is split into two halves using a hole punch."