Nanotechnology Essay Example | Topics and Well Written Essays - 1500 words

Nanotechnology - Essay Example1342-1347 Roco, 2001,pp. 225-233 Singh, Olson, & Maher, 2007, pp. 189-190 Takagi , Hirose A, Nishimura, Fukumori, Ogato, Ohashi, Kitajima & Kanno, 2008, pp. 105-116 Takenaka ,Karg , Roth, Schulz , Ziesenis, Heinzmann, Chramel, & Heyder, 2001, 547-461 Tinkle, Antonini, Roberts , Salmen, DePree & Adkins, 2003, pp, 1202-1208 Tran, BuBuchanan, Cullen, Searl, Jones, & Donaldson, 2000, pp, 1113-1126 Vincent & Clement, 2000, pp. 2673-2682. ). Describe the down and tin can up approach to nanotechnology There atomic number 18 two approaches in synthesizing nano strongs and the creation of nano structures. These are top-down and arse-up approaches (Gitam University, 2013). Top down approach is the slicing or successive cutting of a bulk material to get nano sized particle (Gitam University, 2013 Srinivasan, 2008, p. 1-3 Sullivan, 2001, pp. 51-53).Bottom up approach, on the other hand, refers to the build-up of a material from the bottom (Gitam University, 2013 ). This means materials are reduced atom by atom, molecule by molecule or meet by cluster. Both approaches are considered crucial in the development of modern nano industry and both possess advantages and disadvantages (Gitam University, 2013). Experts cited that process of attrition or milling is a common top down method in establishing nano particles while the colloidal dispersion is a bottom up type approach in synthesizing nano particles (Gitam University, 2013 Iqbal, Preece, & Mendes, 2012, p, 1). Experts explained that the task with top down approach is the surface structure imperfection and the potential crystallographic damages in the aspect method (Gitam University, 2013). This posed additional challenges in the architectural design and fabrication of matters although the application remained favourable to the employment of nano materials albeit some limitations and risks posed by researchers (Gitam University, 2013 Brown, 2002, p. 1). Notwithstanding defects, nanotech continues to play an important role in the synthesis of nano structures (Gitam University, 2013). The ampere-second is experiencing this advancement. This is even done in the production of salt and nitrate in chemical industry(Gitam University, 2013 Institute Of Nanotechnology, 2003, p, 245). considerable ago, people are already content to use rock salt as mixture and for food for thought preservation. These days, there are already iodized salt that are reduced into minute particles in the market. Hence, tools are now made with nanometer scale to produce nano structures with less defects, and more homogeneous chemical account (Gitam University, 2013 Institute Of Nanotechnology, 2003, p, 245). Unlike the bottom up approach, the top-down method introduces internal stress, surface defects and possible contamination. To notwithstanding cite an example, electronic integrated circuits are created using top-down process with limitations described (Gitam University, 2013 Institute Of N anotechnology, 2003, p, 245). bottom-up approach assembles materials in supramolecular chemistry that combined an alternative route (Gitam University, 2013 Institute Of Nanotechnology, 2003, p, 245). Indicate the current be of technology progress towards each of these. The development of laptops, microchips for information archiving, production of scanning tunneling microscope, digital cameras with zooming lenses that capture and