Researching are using sound waves to levitate and move hovering cells, DNA, toothpicks, water droplets, and other small bits of material in different directions. Eventually, the technique could be used for a "lab on a chip" or to transport hazardous or sensitive chemicals or biological materials in the laboratory. Watch the explosion above when sodium and a water droplet collide! ETH Zurich mechanical engineer Dimos Poulikakos and his colleagues reported their results in the new Proceedings of the National Academy of Sciences. From Science News:
To achieve levitation, Poulikakos and colleagues vibrate aluminum blocks about the size of postage stamps up and down, like tiny jackhammers. The rapid buzz kicks up sound waves that sail upward until they hit a Plexiglas reflector and then bounce back down to the blocks.
When these falling waves run into the climbing ones, they can cancel out, creating a low-pressure pocket that can support an object’s weight.
By adjusting vibration rates to control the position of the pocket, the researchers could float particles across a chessboard of the aluminum blocks.
NASA today announced that astronomers studying data from NASA’s Great Observatories have found the best evidence yet for “cosmic seeds in the early universe that should grow into supermassive black holes.”
Could you recover a murder victim’s last sight of their killer by extracting it from the retina? Little more than a century ago, forensic scientists thought it might be possible. After all, in 1877 physiologist Wilhelm Friedrich Kühne was able to develop a simple image from an albino rabbit’s dissected eyeball. (Above, the two images […]
Backed by huge donations from vitamin companies, the American Association of Naturopathic Physicians is pushing to get naturopathic medicine recognized and regulated in all 50 US states, paving the way to receiving public funds in the form of Medicare reimbursements.
Jared Sinclair developed the RSS reader app Unread, which made $10,000 in its first 24 hours on the iOS market. And we’ve all heard the story of Flappy Bird developer Dong Nguyen, whose creation was reportedly earning $50,000 a day at the height of its 2013 explosion. While those are rare examples, they’re also testament to the […]
If you or your company’s IT system are besieged by black hat cyber attacks, an ethical hacker might be all that stands between crippling damage and a company’s long-term prosperity. It’s no wonder that the market for IT security specialists is exploding. Certification is the key – so learn the tenets of ethical hacking and get […]
Your laptop and mobile devices are top of the line…so why are you trotting out that raggedy decades-old suitcase when you go somewhere? Time to up your travel game with a complete 5-piece Herschel Travel Luggage bundle…and we’ll even give it to you for free!Of course, you’ve got to win the Ultimate Herschel Travel Bundle […]