15 agosto 2014
Laser physicists have found a way to make atomic-force microscope probes 20 times more sensitive and capable of detecting forces as small as the weight of an individual virus. The technique hinges on using laser beams to cool a nanowire probe to -265 degrees Celsius. «The level of sensitivity achieved after cooling is accurate enough for us to sense the weight of a large virus that is 100 billion times lighter than a mosquito,» said one researcher.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/_ee00osWaFk/140815102328.htm
