30-08-2014, 10:49 AM
POLY MER MEMORY
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ABSTRACT
Imagine a time when your mobile will be your virtual assistant and will need far more than the 8k and 16k memory that it has today, or a world where laptops require gigabytes of memory because of the impact of convergence on the very nature of computing. How much space would your laptop need to carry all that memory capacity? Not much, if Intel s project with Thin Film Electronics ASA (TFE) of Sweden works according to plan. TFE s idea is to use polymer memory modules rather than silicon-based memory modules, and what s more it s going to use architecture that is quite different from silicon-based modules.While microchip makers continue to wring more and more from silicon, the most dramatic improvements in the electronics industry could come from an entirely different material plastic. Labs around the world are working on integrated circuits, displays for handheld devices and even solar cells that rely on electrically conducting polymers—not silicon—for cheap and flexible electronic components. Now two of the world’s leading chip makers are racing to develop new stock for this plastic microelectronic arsenal: polymer memory. Advanced Micro Devices of Sunnyvale, CA, is working with Coatue, a startup in Woburn, MA, to develop chips that store data in polymers rather than silicon. The technology, according to Coatue CEO Andrew Perlman, could lead to a cheaper and denser alternative to flash memory chips—the type of memory used in digital cameras and MP3 players. Meanwhile, Intel is collaborating with Thin Film Technologies in Linkping, Sweden, on a similar high capacity polymer memory.
INTRODUCTION
Polymers are organic materials consisting of long chains of single molecules. Polymers are highly adaptable materials, suitable for myriad applications. Until the 1970s and the work of Nobel laureates Alan J. Heeger, Alan G. MacDiarmid and Hideki Shirakawa, polymers were only considered to be insulators. Heeger et al showed that polymers could be conductive. Electrons were removed, or introduced, into a polymer consisting of alternately single and double bonds between the carbon atoms. As these holes or extra electrons are able to move along the molecule, the structure becomes electrically conductive.
Thin Film Electronics has developed a specific group of polymers that are bi stable and thus can be used as the active material in a non-volatile memory. In other words, the Thin Film polymers can be switched from one state to the other and maintain that state even when the electrical field is turned off. This polymer is "smart", to the extent that functionality is built into the material itself, like switch ability, addressability and charge store.
These charges come either from electrons, which are negatively charged, or the positively-charged holes vacated by electrons. We can store space charges in a polymer layer, and conveniently check the presence of the space charges to know the state of the polymer layer. Space charges are essentially differences in electrical charge in a given region. They can be read using an electrical pulse because they change the way the devices conduct electricity.
GENERATIONS [b]
PRESENT GENERATION[/b]
Digital Memory is and has been a close comrade of each and every technical advancement in Information Technology. The current memory technologies have a lot of limitations. DRAM is volatile and difficult to integrate. RAM is high cost and volatile. Flash has slower writes and lesser number of write/erase cycles compared to others. These memory technologies when needed to expand will allow expansion only two dimensional space. Hence area required will be increased. They will not allow stacking of one memory chip over the other. Also the storage capacities are not enough to fulfill the exponentially increasing need. Hence industry is searching for Holy Grail future memory technologies for portable devices such as cell phones, mobile PCâ„¢s etc. Next generation memories are trying a tradeoffs between size and cost .This make them good possibilities for development.
NEXT GENERATION MEMORIES
As mentioned earlier microchip makers continue to wring more and more from silicon, large number of memory technologies were emerged. These memory technologies are referred as Ëoe Next Generation Memories„¢. Next Generation Memories satisfy all of the good attributes of memory. The most important one among them is their ability to support expansion in three dimensional spaces.
CONSTRUCTION
(EN)The present invention relates to a non-volatile polymer memory device, and to a method for manufacturing same, and more particularly, to a non-volatile polymer memory device, and to a method for manufacturing same, wherein the device
comprises: a substrate; a lower electrode formed on the substrate; a buffer layer formed on the lower electrode; a PEDOTSS thin film layer formed on the buffer layer; and an upper electrode formed on the PEDOTSS thin film layer.
APPLICATION
1. Used in computers
2. Used in mobile phones
3. Used in digital cameras
4. Used in mp3 players