By Jennie WaltersPosted 03.30.2011 at 4:25 pm 7 Comments
A team of engineers at Ohio State University have packed a nanoparticle full of fluorescent blinking quantum dots. When the particle is attached to a single molecule, it functions as a gaudily glowing beacon.
With their bright, continuous fluorescent glow that transitions between red, green and yellow, the nanoparticle is a better way to tag molecules, both in its function and in its good looks.
Critics of the selection that's often involved in assisted reproductive technology – picking a 5’10”, blond-haired, Ivy League grad egg donor, for example – say it turns conceiving a baby into a shopping exercise. It’s probably safe to venture, however, that none of the critics envisioned a day when we’d be bar-coding embryos.
A new pair of specs may let you tag your world as easily as you tag a blog post—so long missing keys
By Matt RansfordPosted 03.04.2008 at 12:59 pm 1 Comment
Tagging has become a popular standard in Web content management. If you can enter a field of data somewhere, chances are good you can also attach tags. Tags let a user associate that data with a subject matter, much like a card catalogue in a library. When that user goes to retrieve the data, they need only remember a keyword or two to find it. All the posts on this blog, for instance, have tags to denote the topics covered. Social bookmarking sites allow users to tag their links. Photo sharing apps like Flickr do it as well. It's a helpful convenience for when you're out with a camera or in with a laptop.
Just imagine if you could tag everything you saw with your eyes in the course of a day.