Nanotechnology

Nanotechnology

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  NANOTECH NOLOGY WHY?
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  ENGINEERED NANO MATERIALS
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  WHAT IS N AN O T E C H N O L O G Y ? Nanotechnology involves manipulating matter at unprecedentedly small scales to create new or improved products that can be used in a wide variety of ways. 3 MM.DD.20XX
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  STRUCTURE OF NANO- MATERIALS MM.DD.20XX4 CLASSIFIED BYTHEIR DIMENSIONS:
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  5 nanomaterials all the dimensionsare measured within the nanoscale (no dimensions are larger than 100 nm). Most commonly, 0D nanomaterials are nanoparticles. Zero- dimensional (0D) two dimensions are outside the nanoscale. This class exhibits plate- like shapes and includes graphene, nanofilms, nanolayers, and nanocoatings. Two-dimensional (2D) one dimension is outside the nanoscale. This class includes nanotubes, nanorods, and nanowires. One-dimensional (1D) are materials that are not confined to the nanoscale in any dimension. This class can contain bulk powders, dispersions of nanoparticles, bundles of nanowires, and nanotubes as well as multi-nanolayers. Three- dimensional (3D)
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  FOUR TYPES OF ENGINEEREDNANO MATERIALS MM.DD.20XX6
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  CARBON BASED These nanomaterialare composed mostly of carbon, most commonly taking the form of a hollow spheres, ellipsoids, or tubes. MM.DD.20XX7 o Spherical and ellipsoidal carbon nanomaterials are referred to as FULLERENES, while cylindrical ones are called NANOTUBES (Carbon Nanotubes) CNTs.
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  METAL BASED MM.DD.20XX8 oThese nanomaterialsinclude quantum dots, nanogold (also called gold nanoparticles, are small particles that are generally found as a colloidal solution, and its color ranges from clear blue to red), nanosilver, and metal oxides, such as titanium dioxide.
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  DENDRIMERS MM.DD.20XX9 o These nanomaterialsare nano-sized polymers built from branched units. The surface of the dendrimer has numerous chain ends, which can be tailored to perform specific chemical functions. This property could also be useful for catalysis.
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  COMPOSITES Composites combine nanoparticles orwith other nano particles or with larger, bulk-type materials. MM.DD.20XX10 with at least two constituent parts, one being a metal necessarily, the other material may be a different metal or another material. Metal Based provide large amount of flexibility and lightweight to a final product. Polymer Based with at least two constituent parts, one being a metal necessarily, the other material may be a different metal or another material. Carbon Based
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  TWO MAIN SOURCES OFNANOMATERIALS MM.DD.20XX11
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  Natural Sources • AugustBergqvist • Phone: • 678-555-0134 • Email: • [email protected] • Website: Natural sources include but are not limited to volcanoes, viruses, ocean spray, dust storms, bacteria, and bush fires. Additionally, the human body uses natural nanoscale materials such as proteins and other molecules, to control the body's many systems and processes (Kumar et. al., 2014).
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  Anthropogenic Sources • AugustBergqvist • Phone: • 678-555-0134 • Email: • [email protected] • Website: Anthropogenic nanoparticles are man-made and may result in incidental exposure. The anthropogenic nanoparticles, also known as engineered nanoparticles (ENPs), exhibit specific size ranging from 1–100 nm. They are pure materials with controlled surfaces. There are two types of anthropogenic sources, the unintentionally produced and intentionally produced.
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  TWO TYPES OFANTHROPOGENIC SOURCES MM.DD.20XX14 Unintentionally Produced • Combustion aerosols, particularly motor vehicle exhaust emission, coal fly ash, and wielding operations (Kumar et. al., 2014). Intentionally Produce • Nanowires, nanotubes, quantum dots, and fullerenes, mostly composed of metals and metal oxides (Kumar et. al., 2014).
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  MM.DD.20XX15 EXAMPLES OF ENGINEERED NANO-MATERIALS Fullerenesor Carbon Buckeyballs Carbon Nanotubes Metal or Metal Oxide Nanoparticles
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  MM.DD.20XX16 QUANTUM DOTS o Quantumdots were discovered by the Russian Physicist Alexey I. Ekimov in 1981. These tiny nanoparticles have diameters which range from 2 nanometers to 10 nanometers, with their electronic characteristics depending on their size and shape. The particles differ in color depending on their size, the image on the right shows glass tubes with quantum dots of perovskite nanocrystals with differing colors due to varying synthesis reaction times. This results in different nanocrystal size (Chilton, 2014).
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  MM.DD.20XX17 Thank you!