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STM. Scanning Tunneling Microscope What is a Nanometer? (Activity) Developed by Malory M. Peterson, Summer 2006 Nanotechnology Grant National Science Foundation #0532516. Let’s Start by Reviewing Size.

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slide1

STM

Scanning Tunneling Microscope

What is a Nanometer? (Activity)

Developed by Malory M. Peterson, Summer 2006 Nanotechnology Grant

National Science Foundation #0532516

let s start by reviewing size
Let’s Start by Reviewing Size
  • Take a look at the meter stick that is provided. (Your colors may vary from the ones on the example).
  • The whole stick (all colors) is one meter long.
deci meter
Decimeter
  • 1/10 of a meter is represented by the blue, pink, and green end.
  • 1/10 of a meter is called a decimeter.
centi meter
Centimeter
  • 1/10 of a decimeter is represented by the pink and green.
  • 1/10 of 1/10 is 1/100.
  • 1/100 of a meter is called a centimeter.
milli meter
millimeter
  • If we take just the green section that is 1/10 of 1/10 of 1/10.
  • This is also 1/10 of 1/100, or 1/10 of a millimeter.
  • Also, 1/1000 of a meter.
  • This is called a millimeter
review
Review
  • We have just divided the meter stick into 10ths.
  • We did this 3 times and ended up with millimeters.
micro meter
micrometer
  • Imagine we took just the green millimeter and divided that into 10ths three times, like we did before.
  • This would give us something very small.
  • This would be 1/1,000,000 of a meter or a micrometer.
nano meter
nanometer
  • If we took that micrometer and divided it into tenths, three times, we would get something on the atomic level.
  • This is one billionth (1/1,000,000,000) of a meter.
  • This is a nanometer
slide9
STM
  • The STM images on the nanometer scale.
  • This would be the same as taking a meter stick and dividing it into ten pieces 9 times!
  • This is why the nanometer is symbolized by 10-9.
  • 10-9 meters can also be written as .000000001 meters or 1 E-9meters.
  • Atoms and molecules can only be “seen” on the nanometer scale.