Scientists Levitated A Diamond Particle With A Laser Beam (Video)
Aug 14, 2013 09:09
A tractor beam of sorts is in the works. That tiny prick of light you see above is a speck of diamond dust trapped in the grip of a laser beam. Researchers are on their way to understanding macro and quantum physics.
The researchers at the University of Rochester have submitted a paper for publication to the journal Optics Letters to describe that they were successful at capturing, levitating and holding diamond nanoparticles as small as 100 nm.
Led by Nick Vamivakas, the researchers used laser trapping techniques using a highly concentrated laser beam that exerts an attractive or repulsive force against a dielectric nanoparticle. This is the first experiment to successfully pick up diamonds.
The light emitted by the nanodiamonds is due to photoluminescence. The defects inside the nanodiamonds absorb photons from the second laser – not the one that is trapping the diamonds – which excites the system and changes the spin. The system then relaxes and other photons are emitted. This process is also known as optical pumping.
The whole experiment involved spraying an aerosolized nanodiamond dust solution into a 10 inch cubic box.
Building upon this success, Vamivakas' team hopes to apply the technology towards nano sensory equipment to explain some of physic's most fundamental conundrums. [University of Rochester via R&D Mag]
There’s a spreadsheet program that comes with the Mac Operational System which is called Apple Numbers. Actually, it’s a part of Apple’s iWork suite. This program crates files with data organized into rows and columns and may as well be provided with some graphs, tables, images and formulas. Rows are usually labeled with numbers while columns are labeled using letters. An Individual sell can be determined by a unique combination of both. Read more
Photo editing can be a cumbersome and time consuming job, but it's what makes the end product even more stunning. To do this, there are tons of software that allow you to work on your material anywhere without the new of installing it on your computer. Today, we review Fotophire - the latest and also complete photo editing toolkit you can access on the cloud. Check out what we think about it and how you can use it for your photo works. Read more
Just as templates have made it a lot easier to design your web pages and build your websites, there are times when this wide array of templates makes you overwhelmed and confused and for several days together you keep staring at them unable to decide which to select and work upon. Read more