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Microsensoren vinden pathogenen (en)
maandag 10 september 2007
Micrometer-sized diving boards, also called cantilevers, can be used as highly sensitive biochemical sensors of food- and water-borne pathogens. Anja Boisen and her colleagues believe the method will enable food and water quality control to move closer to the producer/supplier, so that any potential contamination can be discovered as fast as possible.Each cantilever has an integrated resistor with piezoresistive properties, which means that the resistance changes when the cantilever bends. When a molecule lands on the surface, the cantilever starts to bend due to changes in surface stress of the two faces of the cantilever.