Spinning objects are hypnotic and fascinating, as last year's fidget-spinner craze overwhelmingly demonstrated. But even the fastest fidget spinner trails the new reigning champion of fast-whirling objects: a tiny dumbbell that can rotate 60 billion times per minute.

It's enough to make your head spin.

Spin doctors — er, researchers — recently created the nanoscale rotor and levitated it in a vacuum, blasting it with lasers to set it spinning. Their research, described in a new study, could help reveal how different substances respond under extreme conditions and how friction behaves in a vacuum, Tongcang Li, an assistant professor of physics and astronomy, as well as electrical and computer engineering, at Purdue University, said in a statement. [The 18 Biggest Unsolved Mysteries in Physics]

Over the past decade, researchers have tested the limits — and broken records — for how fast human-made things can spin. In 2008, a motor the size of a matchbook clocked 1 million rotations per minute, Live Science previously reported. Then, in 2010, scientists set a new rotation record when they spun a slice of graphene at a dizzying 60 million spins per minute, Popular Science reported that year.

Scientists crafted tiny silica "dumbbells" that are too small to be seen with the naked eye, spinning them faster than any other human-made object on Earth. Tongcang Li / Purdue University

Three years later, that record was shattered by a microscopic sphere measuring just 4 micrometers — one-tenth the width of a human hair — capable of completing 600 million spins per minute, or about 500,000 times faster than the spin cycle in a washing machine.

For the new study, the scientists tested so-called nanodumbbells made from two joined silica spheres; each dumbbell measured about 0.000012 inch (320 nanometers) long and approximately 0.000007 inch wide (170 nm).

Nanodumbbells were levitated and spun by lasers, rotating 60 billion times per minute. Tongcang Li / Purdue University

Tightly focused laser light can manipulate tiny objects, and the researchers tested their dumbbells by bombarding them with circularly polarized light, which happens when the electric field produced by the light has a constant magnitude but its direction rotates over time. That polarized laser light forced the nanoscale rotors to spin. In the absence of stray air molecules to slow it down — the test was carried out in a vacuum — the tiny spinner was able to achieve rotation speeds of 60 billion rotations per minute, which vastly exceeds what was previously possible, the scientists reported.

The researchers were also able to vibrate the nanodumbbell in place by blasting it with a laser that was linearly polarized, with its light confined to a single plane, they wrote in the study.

Observations of the objects' rotation and vibration shed light on how vacuums work, the scientists explained. People generally think of vacuums as empty, but physicists see a vacuum as occupied by lively virtual particles, Li said in the statement, and this research with levitating, spinning nanodumbbells brings researchers one step closer to figuring out "what's really going on there" on a quantum level, Li said.

The findings were published online July 20 in the journal Physical Review Letters.

Original article on Live Science.

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