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So What Is Nanotechnology

So What Is Nanotechnology?So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#What Is Nanotechnology?Nanotechnology allows the manipulation of atoms or molecules to create or modify materials at the nanoscale.

If I were asked for an area of science and engineering that will most likely produce the breakthroughs of tomorrow, I would point to nanoscale science and engineering.~Neal LaneFormer Assistant to the President for Science and Technologyhttp://ipt.arc.nasa.gov/Graphics/rdd_talk.pdfSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Whats So Special About Nanotechnology?Materials can have different properties at the nanoscaleBetter at conducting electricity or heatStrongerDifferent magnetic propertiesReflect light betterChange colorLarger surface area, so more surface is available for interactions with other materialsSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 NanotechnologyTo illustrate the importance of surface area, think of a piece of gum chewed into a ball. Then think about stretching that gum into as thin a sheet as possible. The surface, or area visible on the outside, is much greater for the stretched out gum than it is for the wad of gum. The stretched gum is likely to dry out and to become brittle faster than the wad due to more contact at the surface with the air around it. 2011 Project Lead The Way, Inc.#Nanotechnology ProductsAnti-bacterial wound dressingsNanoscale dry powder neutralizes gas and liquid toxins in chemical spillsBatteries deliver more power, more quickly, and with less heatSunscreen to prevent sunburnsScratch and glare resistant coatings for eye glasses, windows, and car mirrors

So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#What Is a Buckyball?Hollow spherical molecule made up of 60 carbon atoms arranged into 20 hexagons and 12 pentagons1 nanometer in diameterResembles the shape of a soccer ball, but is 10 septillion times smaller (10,000,000,000,000,000,000,000,000)

1 nm22 cmSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#BuckyballExtremely strong for use in building materialsMay replace silicon in electronic devicesScientists and engineers are exploring their usefulness in:Vehicles for drug deliveryTiny environmental sensorsLight detectorsSurface coatings to improve wear resistance

So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#

Whats a Carbon Nanotube (CNT)?Tubular form of carbon with diameter of 1 nanometer and length of few nanometers to micronsGraphene sheet rolled into a tube

http://ipt.arc.nasa.gov/carbonnano.htmlhttp://ipt.arc.nasa.gov/Graphics/arl_talk.pdfSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 NanotechnologyCarbon nanotubes are long cylinders made from rolled up sheets of carbon that are 1 atom thick. Their length to diameter ratio is very large (1,000,000 to 1). They have a large surface area compared to other materials and a low density. 2011 Project Lead The Way, Inc.#NanotubesExtraordinary propertiesStiff as a diamondVery high tensile strengthStrongest and most flexible molecular materialCan be metallic or semiconductingVery high current-carrying capacity

So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 NanotechnologyTheoretically, carbon nanotubes are the strongest and stiffest known materials, with a tensile strength of more than 10,000,000 tons per foot. They are 11 times stronger than carbon fiber. Not only are carbon nanotubes very strong, they are also very light. 2011 Project Lead The Way, Inc.#Tools for NanotechnologyNew tools are needed to manipulate and measure objects this small

So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 NanotechnologyThe field of nanotechnology is focused on manipulating materials, devices, and systems at the nanoscale level. 2011 Project Lead The Way, Inc.#

Scanning Electron MicroscopeUsed to show detailed, three-dimensional images at very high magnificationExtends observation beyond objects that are too fast, too small, too far away, or invisible to the naked eyeHow the SEM Works

A three-dimensional ultrastructural image analysis of a T-lymphocyte (right), a platelet (center), and a red blood cell (left) using a scanning electron microscope (SEM)So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 NanotechnologyThe hyperlink takes you to: http://mos.org/sln/SEM/seminfo.htmlUse the click to advance slide show. 2011 Project Lead The Way, Inc.#Atomic Force MicroscopeUsed to image, measure, and manipulate matter at the nanoscaleInformation gathered by feeling the surface with a mechanical probe

Atomic force microscope topographical scan of a glass surface.

So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Microscopes Help Us See

MeterCentimeter

Ruler/CaliperMillimeter

Optical MicroscopeMicrometer

Electron MicroscopeNanometer

Atomic Force MicroscopeSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnologyhttp://www.nnin.org/doc/NNIN1020.pdf 2011 Project Lead The Way, Inc.#Clean RoomScientists and engineers build structures at the nano scale in clean rooms.

They wear suits to protect the clean room from dirt that may be on clothes, bodies, or shoes.So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Nanotechnology ApplicationsNanoelectronics and computingDiodes and transistorsCapacitorsData storageFlat panel displaysEnergy efficient processors

Structural, mechanicalCompositesCables, beamsMultifunctional materialsBody armor, space suitsSelf-healing materials

Carbon nanotubes used in bats and racquets because of their great strengthhttp://www.nano.gov/html/res/200711NanotechnologyBigThingsfromaTinyWorld.htmlSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Nanotechnology Applications

Drug Deliveryhttp://www.nano.gov/html/res/200711NanotechnologyBigThingsfromaTinyWorld.htmlSensorsForcePressureChemicalBatteriesLife detection

BiomedicalDrug deliveryDNA sequencingArtificial musclesBone replacementBionic eyeSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Nanotechnology ApplicationsEnergy and EnvironmentClean, less expensive sourcesHigh efficiency and durable lighting

TransportationWear resistant coatingsHigh strength, light weight composites increase fuel efficiencyImproved displaysBattery technologyWear-resistant tiresAutomated highways

Water Filtrationhttp://www.nano.gov/html/res/200711NanotechnologyBigThingsfromaTinyWorld.htmlSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Nanotechnology ApplicationsNational SecurityHigh sensitivity, low power sensors to detect threatsLight weight military platformsReduce carry-on weight of soldier gear

SpaceProbes for planet surfacesMicro-RoversThinking spacecraft

http://ipt.arc.nasa.gov/spacetransport.htmlSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#SummaryNanotechnology is an enabling technology that will impactElectronics and computingMaterials and manufacturingEnergy and environmentHealth and medicineNational security Space exploration. . . the possibilities are endlessSo What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#Image ResourcesMicrosoft, Inc. (2008). Clip art. Retrieved September 10, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx

National Aeronautics and Space Administration (NASA). (n.d.). Nanotechnology: Opportunities and challenges. Retrieved February 3, 2009, from http://ipt.arc.nasa.gov/Graphics/rdd_talk.pdf

National Aeronautics and Space Administration (NASA). (n.d.). Nanotechnology gallery. Retrieved February 3, 2009, from http://ipt.arc.nasa.gov/spacetransport.html

National Aeronautics and Space Administration (NASA). (n.d.). An overview of recent developments in nanotechnology. Retrieved February 3, 2009, from http://ipt.arc.nasa.gov/Graphics/arl_talk.pdf

National Nanotechnology Initiative (NNI). (n.d.). Big things from a tiny world. Retrieved February 3, 2009, from http://www.nano.gov/So What is Nanotechnology?Gateway To TechnologyUnit 5 Lesson 5.2 Nanotechnology 2011 Project Lead The Way, Inc.#

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