1 Cutting it down to size activity. What is Nanoscience? The study of matter on the “nanometer”...
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Transcript of 1 Cutting it down to size activity. What is Nanoscience? The study of matter on the “nanometer”...
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Cutting it down to size activity
What is Nanoscience?
The study of matter on the “nanometer” scale.A nanometer is one billionth (10–9) of a meter.
Nanoparticles are usually between 1 and 100 nanometers in size: 1 – 100 nm.
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cm mm m nm
10-2 10-3 10-610-4 10-5 10-7 10-8 10-9(m)
Hair100 m
Penny2 cm
Raindrop1 mm
Red Blood Cell5 m
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Calculating the number of molecules along the edge of a sugar cube activity
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Measuring the diameter of a human hair activity
Material Measurement Laboratory
Soft Body Armor Toward
the Nano-Effect
Gale A. HolmesNational Institute of Standards & Technology
Materials Measurement Laboratory8
Material Measurement Laboratory
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Soft Body Armor: Primary Functions
•Stop Projectile Motion – Trampoline Effect
•Minimize Energy Dissipation of Impacting Projectile –Back Face Signature
Material Measurement Laboratory
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Effects of the Shear Thickening Fluid (STF) on the body armor application
Wedge through phenomenon Tensile machine
Kolsky bar
100 101 102 103
Silica particles, 55-65 Vol.% in PEG
Material Measurement Laboratory
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SEM Micrographs of Woven Fabrics with Shear Thickening Fluid (STF)
Material Measurement Laboratory
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Effects of the Shear Thickening Fluid (STF) on Back Face Deformation
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1) Coffee cup AFM 2) Magnetic force microscope
Atomic Force Microscopy (AFM)
How an atomic force microscope “see” atoms
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Scanning Tunneling Microscopy (STM)
Nano-corral of 48 iron atoms on copper surface positioned one at a time with an STM tip Corral diameter 14 nm
An STM image of nanoparticles.
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