How small nanoparticle is?

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How small nanoparticle is?(4-7)

We live in a such world where it's quite impossible for us to imagine and percept a world that's too small to visualize. A nanometer is one billionth (10-9) of a meter, which is very small, only 10 times length of hydrogen atoms, only 1/80,000 the width of a human hair. It's hard to imagine just how small nanotechnology is. One nanometer is a billionth of a meter, or 10-9 of a meter. Some interesting examples will be helpful for the perception of nano scale (Fig 1)

Fig1: Illustration off different objects in nano,micro and millimeter

scale (1 mm= 1000 um,1 um=1000 nm)

>>There are 25,400,000 nanometers in an inch

>>A sheet of newspaper is about 100,000 nanometers thick

>>On a comparative scale, if a marble were a nanometer, then one meter would be the size of the Earth.

>>Human hair: 50,000-100,000 nanometers in diameter.

>>DNA double-helix: ~2 nanometers in diameter.

>>One piece of paper: ~100,000 nanometers thick.

>>Man 6 ft tall ~ 1900 million nanometers tall.

Reference:

4.Allhoff F, Lin P and Moore D (2010). What is nanotechnology and why does it matter?: from science to ethics. John Wiley and Sons. pp 3-5. "http://en.wikipedia.org/wiki/International_Standard_Book_Number.

"title="International Standard Book Number">ISBN 1-4051-7545-1.

5. Prasad SK (2008). Modern Concepts in Nanotechnology. Discovery Publishing House. pp. 31-32. ISBN 81-8356-296-5.

6. Kahn J (2006). "Nanotechnology". National Geographic 2006 (June): 98-119.

7.Rodgers P(2006).Nanoelectronics: Single file. Nature Nanotechnology.doi:10.1038/nnano.2006.5.

Salient Features:

1.Nanoparticles are so tiny that we cannot imagine in real world.

2.It is so small that diameter of human hair is around 50,000 nm.

About the Author

Anirbandeep Bose's picture

I am Dr. Anirbandeep Bose working as an Asst. Prof in Acharya and Bm Reddy college of Pharmacy ,Bangalore.Before that I worked as postdoctoral fellow in Pharmacy department of University Technology Mara(UiTM),Malaysia.I was awarded the post doctoral fellowship by the Malaysian higher education Ministry. Before that I got awarded PhD in Pharmaceutics from Jadavpur University,Kolkata,India. I worked as production chemist(Tablets and Capsule manufacturing) in BHP(1981)PVT. LTD for more than 2 years. I have more than 30 international publications related this field and attended many international conference.

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