New methods for functional materials for nanoelectronics and scanning probe microscopy nanobiology Published on Introduction According to the empirical Moore's law – the number of transistors on a chip doubles every year or two, which is a natural result of the development of nanotechnology. The basis of nanoelectronics are the same elements as in microelectronics – transistors, but with a nanometer size. Through unique physical properties and structural features of carbon nanotubes in this case, are ideal candidates for the role of elements for electronic circuits. The same thing happens in biology and medicine. Obtaining new nanomaterials allows you to create filtration systems and water desalination, as well as filters for gases and air.
Due to the high density of nanotubes per unit area of such filters is much faster and effectively carry out cleaning fluids as compared with polycarbonate filters are now common. Carbon nanotubes – cylindrical structures extended from carbon atoms with a diameter of one to several tens of nanometers and lengths up to several microns. They have an extremely strong and resilient. When you use certain methods to obtain nanotubes are obtained malodefektnymi, with a predetermined structure and growth direction. Methods of preparation was developed and patented a new method of producing nanotubes – a method of ohmic heating of graphite paper 1. In this method for producing carbon nanotubes on a graphite first paper applied to silica gel containing catalysts (Ni, Co and Fe).
Then the paper is placed in the vacuum system and heated to 700 oC. Also used the previously developed method of magnetron sputtering of carbon films with carbon nanotubes 2. They are sprayed in a vacuum chamber using a magnetron sputtering method at constant current. In this deposition process is carried out at a pressure of inert gas in the chamber (1-5) 10-2 Torr and the power of the DC power supply of the target 40 – 100 mA.