In your own words Discuss the impact
of Nanotechnology in various aspects like
health, environment, economy and ethics
of
the society.
Answers
Nanotechnology is often described as an emerging technology—one that not only holds promise for society, but also is capable of revolutionizing our approaches to common problems. Nanotechnology is not a completely new field; however, it is only recently that discoveries in this field have advanced so far as to warrant examination of their impact upon the world around us.
The value of nanomaterials in many technology areas is very high because of their versatile properties. As a result, the investment in nanotechnology by the U.S. government has had a very steady growth; in 2004 investment from a range of different federal agencies reached nearly $1 billion,
Nanoparticles fall into three major groups: natural, incidental, and engineered.aturally occurring nanomaterials such as volcanic ash, ocean spray, magnetotactic bacteria, mineral composites and others exist in our environment. Incidental nanoparticles, also refered to as waste particles, are produced as a result of some industrial processes. The third category of nanoparticles is engineered nanoparticles—these are the particles associated with nanotechnology. Engineered nanoparticles are subclassified by the type of basic material and/or use: metals, semiconductoris, metal oxides, nanoclays, nanotubules, and quantum dots.
Recently, nanotechnology has received considerable attention from the media. Most of the initial reports have been positive; however, scientists should not forget that not all nanomaterials will be benign, said Kenneth Olden, National Institute of Environmental Health Sciences. Therefore, it is very important to identify the negative aspects of the technology before we introduce it to the marketplace. During the workshop, many speakers and participants spoke of the paucity of data for engineered nanoparticles and cautioned against solely relying on the research of natural and incidential nanoparticles.
The potential health and environmental effects of nanoparticles and nanomaterials today raise public concern about nanotechnology. Health and environmental agencies in the United States have the responsibility to provide leadership to ensure the thorough assessment of safety and environmental effects of the new technologies.
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