Nanotechnology A major issue in a little world .

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Nanotechnology A big issue in a small world. H.Aourag URMER, University of Tlemcen. Public concern and media hype. What Is All the Fuss About Nanotechnology?. Any given search engine will produce 1.6 million hits. Nanotechnology is on the way to becoming the FIRST trillion dollar market.
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Nanotechnology A major issue in a little world H.Aourag URMER, University of Tlemcen

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Public concern and media buildup

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What Is All the Fuss About Nanotechnology? Any given web index will create 1.6 million hits Nanotechnology is en route to turning into the FIRST trillion dollar showcase Nanotechnology impacts practically every feature of consistently life, for example, security and solution.

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Physical science content gauges 9-12 Structure of iotas Structure and properties of matter Chemical responses Motion and strengths Conservation of vitality and increment in turmoil (entropy) Interactions of vitality and matter Does Nanotechnology Address Teaching Standards?

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Does Nanotechnology Address Teaching Standards? Science and innovation principles Abilities of mechanical plan Understanding about science and innovation Science in individual and social points of view Personal and group wellbeing Population development Natural assets Environmental quality Natural and human-incited perils Science and innovation in nearby, national, and worldwide difficulties

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Does Nanotechnology Address Teaching Standards? History and nature of science guidelines Science as a human attempt Nature of logical information Historical point of view

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Does Nanotechnology Address Teaching Standards? i

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Does Nanotechnology Address Teaching Standards?

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What is Nanotechnology? It includes any mechanical improvements on the nanometer scale, typically 0.1 to 100 nm. One nanometer squares with one thousandth of a micrometer or one millionth of a millimeter. It is additionally alluded as minuscule innovation.

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WHAT IS NANOTECHNOLOGY? The deliberate make of extensive scale protests whose discrete segments are not exactly a couple of hundred nanometers wide. Abuses novel marvels and properties at the nanoscale. Nature utilizes nanotechnology to construct DNA, proteins, catalysts and so forth. Nanotechnology – Bottom up approach Traditional innovation – Top down approach It is a definitive innovation.

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What does Nano mean? "Nano" – got from an old Greek word "Nanos" which means DWARF. "Nano" = One billionth of something "A Nanometer" = One billionth of a meter 10 hydrogen iotas shoulder to bear There are 25 million nms in a solitary creep. NATIONAL NANOTECHNOLOGY ACT, October 2003

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VARIOUS MATERIALS IN NANOMETER DIMENSION < NM  NM  1000\'s of NM\'s  Million NM\'s  Billions of NM\'s

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NANOMATERIALS WITH DIFFERENT ATOMIC ARRANGEMENTS Carbon Nanotube 50,000 times Thinner than Human hair Buckyball

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FUTURE AUTOMOBILE Nano-scale metal oxide clay impetuses to practically dispose of discharges Carbon nanotubes in windshields & casings to make them solid & lightweight Nano-powders in paints for polished & sturdiness Nano polymer composites for lightweight high resistance guards Fuel cells with nano-impetuses and layer advancements

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NANOMATERIALS IN CURRENT CONSUMER PRODUCTS Cosmetics, sunscreens Containing zinc oxide and Titanium oxide nanoparticles Nano polymer Composites for stain Resistant garments Carbon nanotubes

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HEALTH AND MEDICINE • Expanding capacity to portray hereditary cosmetics will revolutionize the specificity of diagnostics and therapeutics - Nanodevices can make quality sequencing more efficient • Effective and less costly social insurance utilizing remote and as a part of vivo gadgets • New definitions and courses for medication delivery, ideal medication use • More strong, dismissal safe fake tissues and organs • Sensors for early recognition and anticipation Nanotube-based biosensor for disease diagnostics

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HOMELAND SECURITY • Very high affectability, low power sensors for distinguishing chem/bio/atomic dangers • Light weight military stages, without giving up usefulness, safety and fighter security - Reduce fuel needs and calculated prerequisites • Reduce portable weight of soldier rigging - Increased usefulness per unit weight

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ESTIMATES OF THE POTENTIAL MARKET SIZE Other Conservative case Materials Aerospace Chemical Manufacturing NSF Estimate Pharmaceuticals Aggressive case Electronics USD trillions Nanotechnology related merchandise and enterprises – by 2010-2015 Source : National Science Foundation

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SAFETY OF NANOMATERIALS Environmental effect Absorption through skin Respitory afflictions Evidence that carbon nanotubes cause lung contamination in mice. Teflon nanoparticles littler than 50 nm cause liver growth in mice.

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AREAS OF RESEARCH Molecular Self-Assembly – natural, organic, and composites for sub-atomic acknowledgment, sensors, catalysis. Sensors – compound, natural, and radiological specialists; - biosensors; gasses (O 2 , H 2 ). Novel nanomaterial blend and portrayal. Lab-on-chip and Lab-on-a-CD. Novel nanomaterials got from natural atoms – protein nanotubes, viral platforms, bacteriophages. Quantum mechanical demonstrating of nanomaterials. Electronic structures and properties of nanoclusters. Liquid progression in smaller scale and nano-channels. Sub-atomic hardware. Harmfulness of nanoparticles.

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Molecular Nanotechnology The term nanotechnology is frequently utilized reciprocally with sub-atomic nanotechnology (MNT) MNT incorporates the idea of mechanosynthesis. MNT is an innovation in light of positionally-controlled mechanosynthesis guided by sub-atomic machine frameworks.

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Nanotechnology in Field of Electronics Miniaturization Device Density

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History Richard Feynman 1959, entitled " There\'s Plenty of Room at the Bottom " Manipulate iotas and particles straightforwardly 1/10 th scale machine to assistance to build up the up and coming era of 1/100 th scale machine, et cetera. As things get littler, gravity would turn out to be less vital, surface strain particle fascination would turn out to be more critical.

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History Tokyo Science University teacher Norio Taniguchi 1974 to portray the accuracy produce of materials with nanometre resiliences. K Eric Drexler 1980s the term was rehashed 1986 book Engines of Creation: The Coming Era of Nanotechnology . He extended the term into Nanosystems: Molecular Machinery, Manufacturing, and Computation

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Nanomaterial and Devices Small Scales Extreme Properties Nanobots

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Self-Assemble Nanodevices construct themselves from the base up. Filtering test microscopy Atomic compel magnifying instruments examining burrowing magnifying lens checking the test over the surface and measuring the present, one can in this way reproduce the surface structure of the material

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Problems in Nanotechnology how to collect particles and particles into brilliant materials and working gadgets? Supramolecular science self-collect into bigger structures

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Current Nanotechnology Stanford University to a great degree little transistor two nanometers wide and controls electric current through a station that is only one to three nanometers in length ultra-low-control

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Intel processors with elements measuring 65 nanometers Gate oxide under 3 nuclear layers thick 20 nanometer transistor Atomic structure

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Plasmons Waves of electrons going along the surface of metals They have an indistinguishable recurrence and electromagnetic field from light. Their sub-wavelength require less space. With the utilization of plasmons data can be exchanged through chips at an unfathomable speed

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Nanomaterial demonstrating and reenactment sorts

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What I will cover Carbon Nanotubes Bio-Nano-Materials Thermoelectric Nanomaterials What is going on at UK

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Carbon Nanotubes What are they? Carbon atoms adjusted in barrel arrangement Who found them? Scientists at NEC in 1991 What are some of their employments? Minute wires Extremely little gadgets

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Potential vitality Vk = Repulsive drive Va = appealing power Morse potential conditions

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Carbon Nanotubes add up to capability of a framework Adds the NB commitment Force of connection

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Carbon Nanotubes Leonard – Jones potential with von der Waals cooperation Geen - Kudo connection

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Bio-Nanomaterials What is Bio-Nanomaterials? Putting DNA within carbon nanotubes What can this exploration give us? There are bunches of synthetic and natural applications

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Distances after some time

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Van der waals engery

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Radical thickness profiles

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Thermoelectric Nanomaterials Concepts before displaying can start: ZT = T σ S 2/κ T = temperature σ = electrical conductivity S = Seebeck steady κ = κph +κel K = aggregate of cross section and electronic commitments Potential crosswise over thermoelectric material Boltzmann transport

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The Modeling conditions

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Thermoelectric Nanomaterials

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Thermoelectric Nanomaterials

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Thermoelectric Nanomaterials

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Nanomaterials at UK Deformation Mechanisms of Nanostructured Materials Synthesis of Nanoporous Ceramics by Engineered Molecular Assembly Carbon Nanotubes Optical-based Nano-Manufacturing The Grand Quest: CMOS High-k Gate Insulators Self-collected metal combination nanostructures Rare-earth Monosulfides: From Bulk Samples to Nanowires Thermionic Emission and Energy Conversion with Quantum Wires Resonance-Coupled Photoconductive Decay

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Computer Simulation of Fluorinated Surfactants

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1. Davis, H. T., Bodet, J. F., Scriven, L. E., Miller, W. G. Material science of Amphiphilic Layers

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