Scale of Things 05MAR02 - Miami University
Transcript of Scale of Things 05MAR02 - Miami University
DNA~2-1/2 nm diameter
Things Natural Things Manmade
MicroElectroMechanical devices10 -100 µm wide
Red blood cellsPollen grain
Fly ash~ 10-20 µm
Atoms of siliconspacing ~tenths of nm
Head of a pin1-2 mm
Quantum corral of 48 iron atoms on copper surfacepositioned one at a time with an STM tip
Corral diameter 14 nm
Human hair~ 10-50 µm wide
Red blood cellswith white cell
~ 2-5 µm
Ant~ 5 mm
The Scale of Things -- Nanometers and More
Dust mite
200 µm
ATP synthase
~10 nm diameter Nanotube electrode
Carbon nanotube~2 nm diameter
Nanotube transistor
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21st Century Challenge
Combine nanoscale building blocks to make novel functional devices, e.g., a photosynthetic reaction center with integral semiconductor storage
The
Mic
row
orld
0.1 nm
1 nanometer (nm)
0.01 µµµµm10 nm
0.1 µµµµm100 nm
1 micrometer (µµµµm)
0.01 mm10 µµµµm
0.1 mm100 µµµµm
1 millimeter (mm)
1 cm10 mm
10-2 m
10-3 m
10-4 m
10-5 m
10-6 m
10-7 m
10-8 m
10-9 m
10-10 m
Visib
le
The
Nan
owor
ld
1,000 nanometers = In
frare
dUl
travio
letMi
crow
ave
Soft
x-ra
y
1,000,000 nanometers =
Zone plate x-ray “lens”Outermost ring spacing
~35 nm
Office of Basic Energy SciencesOffice of Science, U.S. DOE
Version 03-05-02