Compiled by Walter Sorochan
This information has not been approved by FDA: Read Disclaimer
A particle is defined as a small object that behaves as a whole unit in terms of its transport and properties. It is further classified according to size: in terms of diameter , fine particles cover a range between 100 and 2500 nanometers , while ultrafine particles, on the other hand, are sized between 1 and 100 nanometers. Similar to ultrafine particles, nanoparticles are sized between 1 and 100 nanometers. Individual molecules are usually not referred to as nanoparticles. [ Source: nanotechnology ]
There is no accepted international definition of a nano-particle, but one given in the new PAS71 document developed in the UK is: "A particle having one or more dimensions of the order of 100nm or less". [ Source: nanotechnology ]
Comparative Nano-scale size of objects [ Sources below ]: Object sizes are approximate. [ [ 1 micron or mm = 1000 nm ]
| Object: | nm = nanometers |
| ant | 5,000,000 |
| Head of pin | 1,000,000 |
| human hair | 80,000 - 100,000 |
| 1 cell organism | 50,000 |
| red blood cell | 2,500 - 5,000 |
| bacteria | 50 - 20,000 |
| human cells | 100 - 5,000 |
| virus | 10 -100 |
| silver nano-particle | 3 - 23 |
Comparison of nano size to time: [ Another way of thinking outside the box ]
Regular scale Micro scale
Nano scale
31.7 years 16.7 minutes 1 second
source:
Nano-particles have "novel properties" meaning that their properties are
different from the properties of the bulk material like steel and cotton. For example:
nano-particles may be suspended in a solvent like water, where they can sink or
float and they can display special optical properties like gold appearing a deep
red to black color in solution.
Nano-particles are used with silver to describe the process whereby silver is much smaller than a pathogen in size, can to be attracted to a pathogen and be able to penetrate the inside, thereby disrupting the pathogen's metabolism and destroying it.
References:source: nano comp to time
1. Angert Esther R., Kendall D. Clements and Norman R. Pace, “The largest bacterium.” Nature, volume 362, pages 239-241 (18 March 18 1993). Source: bacteria size
2. Bacteria: bacteria size and table
3. Cell size and scale: genetic size
4. Miller John, "BEYOND BIOTECHNOLOGY: FDA REGULATION OF Nicholas Michael, NANOMEDICINE," 1996. FDA REGULATION OF NANOMEDICINE
5. Other Sources: Malvern
6. Randerson, James. "Massive virus discovered in water tower." New Scientist. 27 March 2003. Source: virus size
"Although the new virus is a thousand times smaller than a pinhead, its girth of 400 nanometres makes it a mammoth in the microbial world. Most viruses measure between 10 and 100 nanometres, and the newcomer is even bigger than some bacteria."7. Roco M.C., " The Future of Nanotechnology Initiative," November 5, 2002. Future nanotech
Tiny Primer on Nano-scale Technologies … and The Little BANG Theory
8. Sorochan Walter, "Nano science today and tomorrow," Nanotechnology explained/font
9. Wikipedia, Wikipedia | nanotechnology