For all those of you who have been occupied all through this week … and didn’t have the time to check out the science notice board … here’s a glimpse into the world of nanotechnology exclusively brought to you by 2B …
Let’s get small!
Rapid advances in the exciting field of nanotechnology are allowing us to shrink everyday objects to previously-unimaginably small dimensions. When objects and distances fall in the range of 1 to 100 nanometers (a nanometer is a billionth of a meter), Newtonian Physics gives way to Quantum Physics – with real-life applications in fields as diverse as medicine, robotics, and even artificial intelligence.
Nanotechnology makes use of minuscule objects – whose width can be 10,000 times narrower than a human hair – known as nanoparticles. Upwards of 600 products on store shelves today contain them, including transparent sunscreen, lipsticks, anti-aging creams and even food products.
What makes nanoparticles so useful is their tiny size, which allows for manipulation of color, solubility, strength, magnetic behavior and electrical conductivity. Nanoparticles do exist in nature, and they’re also created inadvertently through some industrial processes. What’s new – and potentially hazardous – is the widespread engineering of these particles for commercial purposes.
While there is no conclusive evidence that nanomaterials are either unsafe or not, health advocates worry that we’re already putting them on our bodies and ingesting them as if they’d been thoroughly tested and proven safe. Animal studies, including one with rats at the University of Rochester, have shown that some nanoparticles can cross the blood-brain barrier, which protects the brain from toxins in the bloodstream. And inhaled nanoparticles have also harmed the lungs of animal test subjects.
While the benefits of nanotechnology are widely publicized, the discussion of the potential effects of their widespread use in consumer and industrial products is just beginning to emerge,” reports the Journal of Nanobiotechnology. “Both pioneers of nanotechnology and its opponents are finding it extremely hard to argue their case as there is limited information available to support one side or the other.”
Give it a thought … Nanotechnology : A boon or a bane for the future generation. Your views on the same would be appreciated !
Sneha A Motwani, Student Representative, Science Forum
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