Macro, Micro, Nano

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Macro, Micro, Nano
How small is a nanometer?
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History
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Nano Research
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Nano Research
Top-Down Lithography,
Micro-Mechanical Electronic System(MEMS)
IT, Physics approach
Bottom-Up Molecular engineering
Self-Assembly Chemistry,
Material science approach
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Nanochemistry
Materials ? Nanoparticle ? Nanotube ?
Supramolecular chemistry(dendrimer, micelle) ?
Self- Assembly ? Nanoporous
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Why Nanoparticle?

• Quantum Size(Confinement) effect
• Surface Effect

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Quantum Size(Confinement) effect
Particle in a box quantum localization energy
Special correlation Effect
Coulomb Energy
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Absorption Fluorescence
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Metal nano surface Semiconductor nano quantum
Density of state
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Band theory
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Surface effect
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Synthesis ? ??? ?? ??

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• ? ??? Mophology

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Vacuum Chembar synthesis ?? ??
Vaporization Chamber ??? ?? - C60 ??? ??
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Wet Chemistry ? ?? ?? ?? ?? ??
Inverse micelle method
Capping agent
State of Art ?? ????? ??
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Property of Nanoparticle
Optical sensor Magnetic storage
Electrical electronic device
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Nano for SaleThe following sampling of already
commercialized applications indicates.
Application CatalystsCompany
ExxonmobilDescription Zeolites, minerals with
pore sizes of less than one nanometer, serve as
more efficient catalysts to break down, or crack,
large hydrocarbon molecules to form gasoline.
Application Materials enhancementCompany
Nanophase TechnologiesDescription
Nanocrystalline particles are incorporated into
other materials to produce tougher ceramics,
transparent sunblocks to block infrared and
ultraviolet radiation, and catalysts for
environmental uses, among other applications
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Application Data storageCompany
IBMDescription In the past few years, disk
drives have added nanoscale layering-which
exploits the giant magnetoresistive effect-to
attain highly dense data storage.
Application Drug deliveryCompany Gilead
SciencesDescription Lipid spheres, called
liposomes, which measure about 100 nanometers in
diameter, encase an anticancer drug to treat the
AIDS-related Kaposi's sarcoma
Application Manufacture of raw
materialsCompany Carbon NanotechnologiesDescrip
tion Co-founded by buckyball discoverer Richard
E. Smalley, the company has made carbon nanotubes
more affordable by exploiting a new manufacturing
process
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Carbon Nanotube
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Nano-rod
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Nanostucture
Nanofabrication comparing the method
Photolithography Scanning Probe Method Soft
lithography Bottom-Up Method
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Single Molecule
Molecular engineering Molecular Device -nanoelec
nano wire nano transistor(switch)
nano diode nano logic gate
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Single molecular detection
Scanning Tunneling Microscope(STM) Atomic
Force Microscope(AFM) Scanning Probe
Microscope(SPM) Near-Field Scanning Optical
Mocroscopy(NSOM) Two-Photon application
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AFM
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TP-NSOM
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Famous Group
Nanoparticle A. Alivisatos(UC Berkeley)
M. Bawendi(MIT) Carbon Nano R. E.
Smally(Rice) C.
Lieber(Harvard) H.Dai(Stanford) Self-Assembley
G. Whiteside (Harvard) Molecular Electronics
J. Heath, Stoddard(UCLA) Soft Lithography
Mirkin (Northwestern) Single Molecular
Spectroscopy Moener(Stanford)
S. Xie(Harvard), P. Barbara(Texas, Austin)
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What I want to talk about is the problem of
manipulating and controlling things on a small
scaleWhat I have demonstrated is that there is
room - that you can decrease the size of things
in a practical way. I now want to show that
there is plenty of room. I will not now discuss
how we are going to do it, but only what is
possible in principle.We are not doing it simply
because we havent yet gotten around to it
Richard Feynman, American Physical Society
meeting at Caltech, 1959