Colourful Nanotech
US scientists discover a new class of iron oxide nanoparticles that, when in solution, change colour in the presence of a magnetic field
A simple magnet can be used to change the colour of iron oxide nanoparticles suspended in water, according to Yadong Yin and colleagues at the University of California, Riverside.1 The discovery could lead to a new class of low-power electronic displays. It also has the potential to be exploited in rewritable electronic paper displays.
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