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Nanotechnology foundation & applications
By Zainab saad hadi
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History 1981 able to measure the size of an atom cluster on a surface (IBM, Zurich) 1991 able to move atoms on surface (IBM, Almaden) 2002 able to assemble the molecules by physically positioning the component atoms
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Commercialization 1st generation (commercialized) 2nd generation
passive nanostructure applied in coatings, nanoparticles, bulk materials (nanostructured metals, polymers and ceramics) towards systematic design method 2nd generation active nanostructure transistors, amplifier,targeted drugs and chemicals, and adaptive structures (~2005)
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Commercialization 3rd generation 4th generation systems of nanosystems
3D features, heterogeneous nanocomponents specific assembly techniques (such as bio-assembly, networking at the nanoscale, new architectures) ~2010 4th generation molecular nanosystems nanodevices, biomimetics and new molecular designs (~2020)
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Nanotechnology for the next generation
T.Nakahara & T. Imai Sumitomo Electric Industries Ltd.
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Policies Similar projects from Others? Nanocarbon materials
Nanoelectronics Nanobiomaterials Others? Diamond nano emitter project
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Targets Size!
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Nano size effect Nanomaterial: diamond rigid atomic structure
high hardness, high thermal conductivity and high acoustic velocity semiconductor properties apply as semiconductor devices, optical devices, electron emission devices fabrication and synthesis technology manufactured very precisely in a controlled manner
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Applications Triode vacuum tube (~2000°C) VS. micro vacuum triode (~30°C)
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Vacuum Microelectronic Device (VMD)
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Next generation applications for polymeric nanofibres
T.C. Lim and S.Ramakrishna National University of Singapore
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Polymeric fibres Targets Nanofibres
high tensile modulus and tensile strength UV resistance, electrical conductivity, biodegradability typical: m in diameter Nanofibres decrease in pore size, a drop in structural defects, enhanced physical behaviour
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Nanofibres applications
Polymer composite reinforcement the moduli and fracture resistance improvement in epoxy resin (300 nm PBI fibres) Electrical conductors electrochemical rxn rate electrode’s surface area conductive Nano fibrous membrane for electrostatic dissipation, corrosion protection, electromagnetic interface shielding… Sensors huge surface area increases the sensitivity
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