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In 2010, James Tour and colleagues at Rice University built a nanoscale car made of oligo(phenylene ethynylene) with alkynyl axles and four spherical C60 fullerene (buckyball) wheels. In response to increases in temperature, the nanocar moved about on a gold surface as a result of the buckyball wheels turning, as in a conventional car.
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In 2010, IBM used a silicon tip measuring only a few nanometers at its apex (similar to the tips used in atomic force microscopes) to chisel away material from a substrate to create a complete nanoscale 3D relief map of the world one-one-thousandth the size of a grain of salt—in 2 minutes and 23 seconds.
The advances within nanotechnology led to debates on the ethical implications of its applications, including equity, benefit distribution, and environmental impact.
All nanomaterials are nontoxic to humans or the environment.
Nanotechnology not only entails epistemic rupture, but introduces new laws and structures of knowledge, or new cognitive categories.
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