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2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? The Answer: Nanotechnology makes it Possible!!

3 "nano." The American Heritage® Dictionary of the English Language, Fourth Edition. Houghton Mifflin Company, Oct Nanometer (nm) = one billionth of a meter Definition of “Nano”: One billionth (10x-9) See also: Scientific Terms: A human hair is 10,000 nm wide

4 Definition “Nanotechnology”: A field of applied science focused on design, formation, identification and application of materials and devices on the nanoscale. "nanotechnology." Wikipedia: The Free Encyclopedia.

5 Two Methods of Making Nanoparticles “Top Down” Cut object smaller and smaller until attain size needed. “Bottom Up” Add atoms together one by one to attain correct property. Vs.

6 Properties That Change at a Nanometer Scale: Thermal – melting temperatures Mechanical – adhesion (stickiness) Electrical – current Optical* - prisms

7 White light is all visible colors together which have a wavelength between 740 nanometers (nm) to 380 nm.

8 Wavelengths of Spectral Colors Color Wavelength in nanometer (nm) Red740nm - 625nm Orange625nm - 590nm Yellow590nm - 565nm Green565nm - 520nm Cyan520nm - 500nm Blue500nm - 435nm Violet435nm – 380nm

9 Optical Properties Are Directly Dependent on Size EXAMPLE: Gold and silver nanoparticles Cut to 1000nm the color would be golden color. Cut to 700nm the color would be red. Cut to 600nm the color would be orange. The color changes because each color has a specific wavelength.

10 Imagine a soldier that has a uniform that can change from desert, to winter, to forest camouflage by using current from a small battery to rearrange alignment of the molecules!

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12 Thank You! This Presentation Has been Brought to you by Raymond Serrano.