gold nanorods, namely their kinetics and anisotropic growth. In the case of the first parameter, we observed that slowing the growth of the Au nanorods increases their aspect ratio. In other words, anisotropic growth can be facilitated at low temper- ature. Recently, it has been found that a range of ordered superstructures of particles can be obtained by similar self-assembly method. Murray and
3D printing
3D printing or additive manufacturing (AM) refers to any of the various processes for printing a three-dimensional object. Primarily additive processes are used, in which successive layers of material are laid down under computer control. These objects can be of almost any shape or geometry, and are produced from a 3D model or other electronic data source.
Basic principles
If the
Nanoparticles present possible dangers
- due to the high surface to volume ratio
pass through cell membranes in organisms
Smaller nanoparticles evinced increased cytotoxicity.
Self-assembly :
process that disordered system of components forms an organized structure or pattern
The device is switched on - >
the pump pushes ions across the lipid membrane,
3. Results and Discussion
3.1 Morphologies and structure(SEM)
Fig. 1 (a)shows SEM image of as-obtained ZnO nanowires of in the first step ranging from 80 to 400 nm in diameters and about 4 mm in length. Goldparticles at the tips of the nanowires can be seen in Fig. 1(a). This indicates that the ZnO nanowire growth was governed by a VLS process. Fig. 1(a) shows ZnO nanowires obtained under th
1. Nanorods
of the reported procedures for rod formation, seedmediated growth has been by far the most efficient and popular approach. The role played by the seed particle is also critical. Furthermore, the presence of small amounts or silver nitrate during the synthesis has a dramatic effect on the final shape and crystalline structure if the particles. Citrate-capped gold nanoparticle, prepare