As well as scanning tiny circuits, the microscope can be used to reveal the internal structure of any object capable of conducting electricity. For example, it could look directly at microscopic cracks in an aeroplanes fuselage, __________. The technique cannot yet pick up electrical activity in the human brain because the current there is too small, but Xiao doesnt rule it out in the future. I can never say never, he says.
Although the researchers have only just made the technical details of the microscope public, it is already on sale, from electronics company Micro Magnetics in Fall River, Massachusetts. It is currently the size of a refrigerator and takes several minutes to scan a circuit, but Xiao and Schrage are working __________.
A to shrink it to the size of a desktop computer and cut the scanning time to 30 seconds
B to making chips any smaller
C to take tiny chips we require
D to picture the progress of the currents
E converting the information into a color picture showing the density of current at each point
F faults in the metal strip of a forged banknote or bacteria in a water sample
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