Presentation on theme: "Adapted from Nanosense"— Presentation transcript:
1 Adapted from Nanosense STEM ED/CHM NSTA 2008How Big is a Nanometer?Adapted from Nanosense
2 www.umassk12.net/nano Educational materials (including today) Summer institute
3 Adapted from Nanosense This activityOn our websiteOther useful nanoscience materialsOther nanotechnology and power of ten resources:
4 How Big is a Nanometer?IBM chipUMass LogoTI mirror array
5 The Nano ScaleNano materials are typically 1 to 100 nanometers in size1 nanometer = 1/1,000,000,000 metersHow do such materials fit into the overall scale of objects in nature?And how big is a nanometer in terms of something basic?
6 We’ll use powers of tenHandy way to express very large or very small numbers.Easier than writing lots of zeros!106reads 'ten to the 6'is 1 followed by 6 zeros, 1,000,000is 1.0 with the point moved right by 6 places
7 Negative powers of 10 10-6 reads 'ten to the minus 6' is 1 divided by 106 , 1/1,000,000is 1.0 with the point moved left by six places, 0.000,001
8 How big is a meter?Width?~2 metersHeight?~ 1 meter
23 So how big is a nanometer? Carbon atom diameter ~ m10 x m = m1 nanometer ~ 10 atoms wideNano wires and tubes are x 10 atoms in diameterNano films are a x 10 atoms in thicknessNano particles are 1 to 100 x 10 atoms in diameter
24 The Size Me Challenge Each team has an envelope containing A 3 page list of powers of ten24 picture cardsPlace each card next to the appropriate power of tenSize matches will be approximateSome matches will be easy, some will be hard!