Onionlike polymer particles ideal for secure encryption

Wednesday, 21 April 2004, 9:05 AM EST

The material consists of a lattice of onionlike spheres in which the particle core and its layers each contain a different dye. The material can hold four or more pieces of information in one spot—not just two as in binary optical data storage. And it opens a door to high-density three-dimensional optical data storage.

“The approach is really simple,” says lead researcher Eugenia Kumacheva, associate professor of chemistry at the University of Toronto, who worked with postdocs Ilya Gourevich and Hung H. Pham and microscopist James E. N. Jonkman. They start with colored colloids—polymeric nanospheres labeled with a dye—for example, an ultraviolet dye. Then they envelop the nanosphere, what Kumacheva calls the core, with a shell of another polymer labeled with a dye that has a spectrum entirely distinct from the first—say, a visible dye. Any number of dye-polymer shells can be added. The last shell then becomes the matrix that holds the layered particles.

By Louisa Dalton at C&EN.

[ Read more ]




Spotlight

Windows 0-day exploited in ongoing attacks, temporary workarounds offered

Posted on 22 October 2014.  |  A new Windows zero-day vulnerability is being actively exploited in the wild and is primarily a risk to users on servers and workstations that open documents with embedded OLE objects.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  

DON'T
MISS

Thu, Oct 23rd
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //