Nanomaterials and their Biological applications.pptx

This Presentation is based on the Biological application of Nanoparticles and their effect on other substances.

1. Nanomaterials and their Biological applications Presented by; Syed abdulsamaD AND Haroon khan

2. Table of content What is nanomaterials. Properties Structures on the basis of dimension Structure on the basis of composition Preparations Applications

3. What is nanomaterial The word nano derived from Greek word Nanos which means small or dwarf. A nanometer is one billionth of a meter. Nan scale ranges from 1 nm to 100 nm. Nanomaterial's can be define as those materials which have structured components with size less than 100 nm at least in one dimension. Nanotechnology is design, characterization, production and application of structures, devices and system by controlling the shape in nanometer scale.

4. How small is Nanomaterial

5. Nanomaterial products

6. Properties Changed at nanoscale Materials Simple properties Properties at Nanoscale Silicon Insulator Conductor and semiconductor Platinium Inert materials Show catalytic properties Aluminium stable Combustable

7. Structure of Nanomaterials on the basis of Dimension If one dimension of a material is in the nano range they are called nanomaterials. On this They are four types. 1) Zero dimensional 2) One Dimensional 3) Two dimensional 4) Three dimensional

8. Zero Dimensional Nanomaterials with all the dimensions at nanoscale is zero dimensional. For example Quantum dots, Nan dots and magnetic nanoparticles etc. Amorphous, single or polycrystalline, various shapes, exist individually or incorporated in a matrix Mostly used in biosensing like Grapheme's quantum dots are used for the detection in various diagnosis in major diseases.

9. One dimensional Those materials with one dimension outside the nano range is called one dimensional nanomaterials. For example nanotubes, nan rods and nanowires. App, Carbon nanotubes are used in electronics A wire made from a nanotube, or a nanowire, can carry much more current than an ordinary metal wire of comparable size. At 1.4 nanometres in diameter, nanotubes are about a hundred times smaller than the gate width of silicon semiconductor devices

10. Two dimensional Nanomaterials with two dimensions outside of the nano scale or those materials with only one dimension at nanoscale are known as two dimensional nanomaterials. For example thin films, nano layers etc are the examples. App, Thin film of titanium dioxide are used in dye sensitized solar cells

11. Three dimensional Three-dimensional nanomaterials (3D) 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 .

12. Diaghram

13. Biological applications of Nano materials 1) Nanodrugs Nanomaterials are used as drug for the treatment of cancer and tuberculosis. 2) Gold coated Nano cellsGold coated Nano cells containing silicon core are administered near the tumors. When IR light or irridicated on the skin externally. The gold nanoshell absorb the light and convert in to heat..which destroy the cancer cells responsible for tumour. 3) Nanomedibot Nanoparticles act as nano medibot which identify and penetrate the cancers cells and destroy them by applying cancer drugs

14. 4) Optical imaging Most nanoparticles based optical imaging agents can be subdivided into two categories quantum dots and dye doped nanopartices