Technology Never Ends.

Compass reported that load continued to write using nano-technology to create a diamond hardness of more than nanokomposit. Nanotechnology is now the fruit of the lips among scientists, because the future is very bright. Developed countries are racing to the pursuit of excellence in this very interesting. Japan, for example, dare to invest in one billion U.S. dollars, nanonya technological development, in 2002, followed by the United States and 550 million U.S. dollars, the EU 45 billion U.S. dollars. This proves that these countries are committed to the development of nanotechnology, as well as they think, nano-technology is the answer for the future. The following will discuss some examples of nanotechnology applications being investigated.

Nano-technology, light remain in the window

Light or glass barrier film services had been held the heat, so that the room in the home or car is still cool. The current system used in polymer coating applied to the glass surface. But often the room is still hot, because this type of glass film can not contain near-infrared (near-infrared, near infrared). The main source of near-infrared spectroscopy is a warm feeling in the room, and even glass film.

Stefan Schelm and Jeff Smith University of Technology in Sydney, Australia, recently found that by adding nano-spaces of lanthanum Hexaborida (LaB 6) on the glass, polymer film, the infrared absorption efficiency can be increased significantly. This is due to the impact of surface plasmon excitation (surface plasmon excitation, extraction), which tereksitasinya free electrons in the metal conduction band in together, so that energy absorption occurs. 6 LaB their particle size should be small enough to prevent the scattering (scattering) light. 20-200 nm size Hexaborida lanthanum can absorb 95% of the near-infrared wavelengths at 900-1200, while the average absorption of the glass membrane is only about 30-40%.

Nanotechnology treatment fotodinamik

Fotodinamik therapy is the treatment of light-sensitive molecules (photosensitizers, PSS) to tend to gather in tumor cells. When the light irradiation with a certain wavelength, PSS excitement, the energy transfer to a nearby oxygen molecules to form reactive oxygen species (reactive oxygen species, Ross) who will be set up to kill cancer cells. Therefore, cancer treatment can be accurately positioned without prejudice to the healthy cells. The problem is that most of them are hydrophobic, so that PSS can not be directly into the body. This requires operators (carriers), PSS is able to carry the cancer cells without damaging side effects.

Cap N. Prasad and others, from the State University of New York at Buffalo and Roswell Park Cancer Institute found that ceramic nanoparticles can be used as carrier and PSS the efficiency and safety. These ceramic materials easy to make, can be from being affected by PSS pH, temperature, and allow the properties of certain compounds, in addition biokompatibel, will unswervingly adhere to cancer cells.

They are synthetic ceramics, paint and devinyl – 2 – 2 – (1 – hexyl) pyropheophorbida (HPPH), the type of PSS is currently in clinical I / II phase as the anti-cancer drug. Pores small enough to nanokeramik Xiangnian Qi HPPH not able to generate oxygen HPPH Ross also led to cell death.

Another possibility is to use silicon-based nano-particles and core. Nano-particles, and then there is a specific compound can be attached to the appropriate receptor cells. Then, if there is a dc magnetic field, particles are attached to cancer cells will lead to cell death, due to the magnetic field (magnetic cell lysis), and kill cancer cells.

Nano-technology as an alternative data storage

Data storage technology has leapt away from the tape materials, laser technology, DVD and CD – ROM. However, nano-technology seems to be able to carry out data storage has become more forward left.

Peter Vettiger and Gerd Binnig (Koenig is the winner 1986 Nobel Prize in Physics for the discovery of the “scanning tunneling microscope, scanning tunneling microscopy) in, IBM Zurich Research Laboratory, suggest the best use of a needle-nanometer (the principle of scanningtunneling microscope technology) as a data storage device. prototyping tool, known as the Ma Lu (1000 feet).

Millipede works is simple. A Nami needle connected to a buffer, and then fixed on the polymer sheet. If the buffer is heated to high temperatures (about 400 groups), the buffer will be expanded and the needle will be gaps in the polymer. Indent understood as a signal to one, there is no reduction to 0. Data readings are also using the same principle. If the buffer zone heating temperature 300 ℃, the buffer will be slightly swollen, the tip just touch the surface of the polymer pin. Then the needle to ‘belong’ to indent in order to reduce the temperature and power transmission changes. This phenomenon can then be used to read data on the polymer sheet.

Another advantage is the possibility of this system to delete data is written. If the heating temperature of 400 OC and a buffer to the existing indentation, the heat transferred to the polymer melt can close this indentation. In this way, data can be deleted, store, and quickly re-read and durable.

Millipede prototype recently been able to load the needles 1024 and the buffer chip area of 3 square millimeter. Approximately 80% of the normal functioning of their applications have been tested directly. These results are very encouraging and proves effective nano-technology in data storage technology.

Nanotechnology is a promising future of a lot of things. With all the possible use of existing technology and nano-significant flexibility, do not be surprised if the next 4 to 5 years, nanotechnology will reach the hands of consumers in an important role in daily life.