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Ultrasound & Water Blast Contamination from Surfaces

Soaps, disinfectants, powerful chemicals and high-pressure sprays are the standard when it comes to removing tough gunk like mascara, grease, blood and bacterial biofilms. There now appears to be a better way to scrub contaminants off surfaces–a gentle stream of water pulsing with ultrasonic soundwaves.

For several years, researchers at the University of Southampton in the UK have been working on a device they call the StarStream, which has a special nozzle that injects bubbles and ultrasound into a water stream.

In a number of videos, ultrasonics and underwater acoustics professor Timothy Leighton demonstrates the water-gun-shaped device’s ability to scrub away mascara between a metal file’s teeth, tissue from bone, grease from a spring and bacteria from teeth. In their most recent study, they say StarStream is good enough to disinfect medical instruments after contamination with tissue, body fluids and bacteria. Learn more below.

The WITT device can capture energy from six degrees of motion and directs it into spinning a unidirectional flywheel.

A prototype device being worn by a person while walking to harvest energy from the chaotic movement.

Encased in a watertight sphere, this prototype device has a 33 lb. pendulum turning a heavy flywheel that captures energy from wave motion to make power.

A WITT device prototype producing power from walking motion.

txchnologist:

Device Captures Energy From Chaotic Motion

Though we go scrambling for an electrical socket or a new battery when our smartphones or other electronics need a boost, the energy to do the job is all around us. A ship bobbing up and down in the water or a jogger running in the park unleashes enough energy in their movements to potentially provide usable power. If only we could figure out how to harness the energy unlocked by chaotic movement and store it for use when it’s needed.

The machine above is called the WITT (Whatever Input to Torsion Transfer) device. It consists of two pendulums, which pivot around shafts that transfer chaotic movement in any direction to an attached flywheel. The torque from the spinning shafts is funneled into spinning the flywheel in a single direction, which stores energy in its rotation. That stored energy can then be tapped to generate smooth power output. Two patents have been issued for the chaotic motion energy harvester. Learn more below.

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masuoka ma il sistema di cui parlavi nell’altro post sulla centrale mareomotrice, sfrutta questo principio qua (magari in scala piu’ grossa) ?

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