The right tool for the right size The Pinch Test The right tool for the right size NNIN Document: NNIN-1287 Rev: 10/2012 National Nanotechnology Infrastructure Network www.nnin.org Copyright Georgia Institute of Technology 2009 Permission granted for printing and copying for local classroom use without modification Developed by Pamela Gilbert-Smith Development and distribution partially funded by the National Science Foundation

How To Pinch NO YES

10-5

Centi-

Penny

Animal Cell

Red Blood Cell Credit: SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY

Sugar crystal

Micro-

Hydrogen Bonds

Flower/stamen/pistal/pollen – your choice of any of these

10mm

10-3

cat

molecule Credit: LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

Cell Nucleus

flower

Covalent or Ionic Bond

Atom http://en.wiktionary.org/wiki/atom Available under the Creative Commons Attribution/Share-Alike License

rust

Insect’s eye

Nano-

1m

Chewing gum

Buying a diamond http://en.wikipedia.org/wiki/Diamond Available under the Creative Commons Attribution-ShareAlike License

egg

Insect hairs

103

Plant Cell

tomato

10-9

Diameter or width of bracelet

Flip flops

Angstrom