NANOTECHNOLOGY LECTURE 1... .. (1).pptx

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1. NANOTECHNOLOGY Dr.Suhad A.Yasin

2. Nanotechnology is the study of extremely small structures. The prefix “ nano ” is a Greek word which means “dwarf ”. The word “ nano ” means very small. Nanotechnology deals with materials in the size of (0.1 to 100 nm). Nanotechnology works on matter at dimensions in the nanometer scale length (1-100 nm), and thus can be used for a broad range of applications.

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5. Applications and Possibilities

6. How Small Can We See?

7. 1 10 Nanotechnology : is the science and engineering of manipulating matter at the atomic or molecular scale, typically between 1 and 100 nanometers, to create new materials, devices, and systems with unique properties and functions. At this nanoscale , materials often exhibit different physical, chemical, and biological properties compared to their larger-scale counterparts, enabling innovations in various fields such as medicine, electronics, energy, and materials science.

8. 1 11 Nanomaterials : are materials with structural components that have at least one dimension in the nanometer scale (1 to 100 nanometers). Due to their extremely small size, nanomaterials often exhibit unique physical, chemical, mechanical, and optical properties that differ significantly from those of bulk materials. These enhanced properties make nanomaterials valuable for a wide range of applications, including in medicine, electronics, energy storage, environmental protection, and more.

9. 1 12 Classification of nanomaterials ' based on the structural configuration

10. History of Nanotechnology

11. 1 14 Father of Nanotechnology

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13. 1 16 In general, nanomaterials are materials whose external dimensions are in the nanoscale (usually 1–100 nm) or those who have a nanoscale internal structure/surface. What is a nanometer?  A nanometer is one billionth of a meter. The prefix “ nano ” means “one billionth”, or 10-9, in the international system for units of weights and measures. The abbreviation for nanometer is "nm."

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22. 1 25 Definition of Nanotechnology is given by the US National Nanotechnology Initiative (NNI) as: Research and technology development at the atomic, molecular or macromolecular levels, approximately 1–100 nano -meters in length. Creation and use of structures, devices, and systems that have novel properties and functions because of their small and intermediate size. Ability to control or manipulate on the atomic scale.

23. 1 26 How small is the nanoscale ? Here are a few comparisons:

24. 1 27 Research on nanomaterials is driven by two motivating factors: They exhibit interesting properties at nanometer size scale which is different from bulk material and 2) Applications of these properties in devices

25. 1 28 Picture representing the relative size of the various naturally occurring objects/species and artificial materials

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