The bots only swam 5.5
micrometres per second, but that's still faster than many other similar mini-machines.
But one of the most common bacteria doesn't have a flagellum, yet it can still swim at a perfectly respectable 25
micrometres per second.
Not exact matches
Betzig's group has made 400 dots in a grid 2.3
micrometres across, corresponding to 7 billion bits
per square centimetre.
Average concentrations of particles under 2.5
micrometres were between 11 and 30 micrograms
per cubic metre.
They found that HD 98800, which is an orange star, emits 10
per cent of its radiation in the far - infrared — at wavelengths between 10 and 100
micrometres.
His team has created a robot hand that is simply a rubber bag filled to about 80
per cent of its volume with glass spheres, each 100
micrometres in diameter.