Nanotechnology, shortened to "nanotech", is the study of the controlling of matter on an atomic and molecular scale. Generally nanotechnology deals with structures of the size 100nanometers or smaller in at least one dimension, and involves developing materials or devices within that size. Nanotechnology is very diverse, ranging from extensions of conventionaldevice physics to completely new approaches based upon molecular self-assembly, from developing new materials with dimensions on the nanoscale to investigating whether we can directlycontrol matter on the atomic scale.
There has been much debate on the future implications of nanotechnology. Nanotechnology has the potential to create many new materials and devices with avast range of applications, such as in medicine, electronics and energy production. On the other hand, nanotechnology raises many of the same issues as with any introduction of newtechnology, including concerns about the toxicity and environmental impact of nanomaterials, and their potential effects on global economics, as well as speculation about variousdoomsday scenarios. These concerns have led to a debate among advocacy groups and governments on whether special regulation of nanotechnology is warranted.
• According to a report by a groupof researchers at the University of Toronto in Canada, the fifteen most promising applications of nanotechnology are:
Production and energy conversion.
Weaponry and defense systems.Agricultural production.
Water treatment and remediation.
Diagnosis and screening for disease.
Drug delivery systems.
Remediation of air pollution.Construction.
Detection and control of pests.
Control of malnutrition in poor places.
Genetically engineered foods.
Molecular thermal changes (Nanotermología).
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