## Nanomaterials Notes PDF

Free Nanomaterials notes pdf are provided here for Nanomaterials students so that they can prepare and score high marks in their Nanomaterials exam.

In these free Nanomaterials notes pdf, we will study the basic concepts and principles to understand nanomaterial. Various nanomaterial synthesis/growth methods and characterization techniques are discussed to explore the field in detail. The effect of dimensional confinement of charge carries on the electrical, optical, and structural properties are discussed. The concept of micro- and nano- electro mechanical systems (MEMS and NEMS) and important applications areas of nanomaterials are discussed.

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Topics in our Nanomaterials Notes PDF

The topics we will cover in these **Nanomaterials pdf notes** will be taken from the following list:

**NANOSCALE SYSTEMS: **Density of states (3D, 2D, 1D,0D), Length scales in physics, Nanostructures: 1D, 2D, and 3D confined nanostructures (thin films, nanowires, nanorods, nanodots), Schrodinger equation- Infinite potential well, potential step, potential box, Band structure and density of states of materials at nanoscale (Quantitative for 3D, 2D, 1D, 0D), Size Effects in nano systems, Applications of quantum confinement of carriers in 3D, 2D, 1D nanostructures and its consequences on electronic and optical properties. Numerical problems based on above topics.

**SYNTHESIS OF NANOSTRUCTURE MATERIALS (Qualitative): **Top down and Bottom up approach, Photolithography. Ball milling. Spin coating, Vacuum deposition: Physical vapor deposition (PVD): Thermal evaporation, Sputtering, Pulsed Laser Deposition (PLD), electric arc deposition for CNT, C_{60}, grapheme, Chemical vapor deposition (CVD). Preparation through colloidal methods (Metals, Metal Oxide nanoparticles), Molecular Beam Epitaxy (MBE) growth of quantum dots.

**CHARACTERIZATION: Structure and Surface morphology: **X-Ray Diffraction (XRD). Scanning Electron Microscopy (SEM). Transmission Electron Microscopy (TEM).Atomic Force Microscopy (AFM).Scanning Tunneling Microscopy (STM).

**Spectroscopy:**Working principle of UV-Vis spectroscopy, IR Spectroscopy, Raman and Photoluminescence Spectroscopy and study the size dependent properties using these techniques.

**OPTICAL PROPERTIES:**Quasi-particles and collective excitations (Qualitative idea).Quantitative treatment of excitons, Radiative processes: General formalization absorption, emission and luminescence. Optical properties of nanoparticles as a function of size, defects and impurities: deep level and surface defects. Numerical problems based on above topics.

**ELECTRON TRANSPORT: **time and length scales of electrons in solids, Carrier transport in nanostructures: diffusive and ballistic transport, Charging effect, Coulomb blockade effect. Single electron transfer devices (no derivation).Conductance quantization: 2DEG in GaAs and integer quantum hall effect (Quantitative), conductance quantization in 1D structures using split gate in 2DEG (no derivation).Numerical problems based on above topics.

**APPLICATIONS (Qualitative): **Applications of nanoparticles, quantum dots, nanowires and thinfilms for photonic devices (LED, solar cells). CNT based transistors. Nanomaterial Devices: Quantum dots heterostructurelasers, optical switching and optical data storage. Magnetic quantum well; magnetic dots-magnetic data storage.Micro Electromechanical Systems (MEMS), NanoElectromechanical Systems (NEMS).

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