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These acoustic waves can levitate and move particles in brand-new methods

These acoustic waves can levitate and move particles in brand-new methods

A new machine uses ultrasonic waves to make particles dance in midair like marionettes on (invisible) strings. Unlike other devices that also use sound radiation to manipulate matter, the new system can move several objects in different directions at once (SN: 4/19/14, p. 8). This kind of levitation technology, described online the week of December…
A brand-new aircraft utilizes charged particles, not props or turbines, to fly

A brand-new aircraft utilizes charged particles, not props or turbines, to...

A newly designed airplane prototype does away with noisy propellers and turbines. Instead, it’s powered by ionic wind: charged molecules, or ions, flowing in one direction and pushing the plane in the other. That setup makes the aircraft nearly silent. Such stealth planes could be useful for monitoring environmental conditions or capturing aerial imagery without…
A brand-new ultrafast laser gives off pulses of light 30 billion times a 2nd

A brand-new ultrafast laser gives off pulses of light 30 billion...

Blazingly fast lasers have just leveled up. Ultrafast lasers emit short, rapid-fire bursts of light, with each pulse typically lasting tens of millionths of a billionth of a second. A new laser pulses 30 billion times a second — about 100 times as fast as most ultrafast lasers, researchers report in the Sept. 28 Science.…
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