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Nanotweezers

11.02.2008

A group of Danish, British and German nanotechnologists have created tweezers for manipulating carbon nanotubes. It is made by silicon microlithography.

When a current is passed through the two outer nanorods of the tweezers, they heat up, elongate a little and force the thin sponges of the tweezers to converge, capturing the nanotube. If a current is passed through the internal nanorods, they lengthen and the tips of the tweezers diverge.

While the problem remains how to get the tweezers to release the captured: nano-objects, due to the forces of interatomic interaction, tend to stick to silicon. So the tube must be brought to something more "sticky" than silicon, and then let go.

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Alphabet's Wing, which develops drones for various tasks, has launched a drone delivery service in Australia. True, so far in a very limited format.

Initially, the service will only be available to a select number of households (about XNUMX) in the suburbs of Crace, Palmerston and Franklin in Northern Canberra. However, already "in the coming weeks and months" the company expects to expand its coverage.

The Wing service has partners, so you won’t be able to order anything, even if it meets weight and size standards. Partners now include Kickstart Expresso, Capital Chemist, Pure Gelato, Jasper + Myrtle, Bakers Delight, Guzman Y Gomez and Drummond Golf. You can order food, pharmaceutical preparations, hot coffee.

The Wing service received permission from the Australian regulator, but with a number of restrictions. For example, the company's drones have the right to take off no earlier than 7:00 on weekdays and Saturdays and no earlier than 8:00 on Sundays and holidays. Drones should avoid major highways and one local equestrian park.

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