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Some researchers believe nanotechnology can be used to significantly extend the human lifespan or produce replicator-like devices that can create almost anything from simple raw materials. Others see nanotechnology only as a tool to help us do what we do now, but faster or better.
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Many fields of endeavor contribute to nanotechnology, including molecular physics, materials science, chemistry, biology, computer science, electrical engineering, and mechanical engineering.
National Science Foundation of the US says: nanotechnology is "Research and technology development at the atomic, molecular or macromolecular levels, in the length scale of approximately 1 – 500 nm range."
Advances in nanoscience are making it impossible to create innovations such as ultra-small camera lenses, toxin-hungry nanosponges, and advanced drug therapies. Nanoscience can be applied across all the science fields, such as chemistry, biology, physics, materials science, and engineering.
Unbound engineered nanoparticles are engineered nanomaterials that, under normal temperature and pressure conditions, are contained within a matrix that would reasonably be expected to prevent the particles from being separately mobile and a potential source of exposure.
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