project maker
09-08-2014, 12:06 PM
NANO TECHNOLOGY BASED
DATA STORAGE
[attachment=66791]
ABSTRACT
Storing data in the storage devices such as Magnetic Tape drives, Hard drives, Floppy drives, Compact-Disc, DRAM, SRAM, FLASH, etc, is important for the information technology world. But as this industry growing on the needs of storing data is increasing tremendously. We require high data capacity, high data transfer rates. Current trend storage devices can not meet this requirement. In this medley Nanotechnology is useful to design high data compression storage devices with higher data rates. In this regard Ultrahigh storage densities of up to 1 Tb/in2. or more can be achieved by using local-probes techniques to write, read back, and erase data in very thin polymer films. The thermomechanical scaning-probe-based data-storage concept, internally dubbed “millipede”, combines ultrahigh density,, and high data rates. High data rates are achieved by parallel operation of large 2D arrays with thousands micro/nanomechanical cantilevers/tips that can be batch-fabricated by silicon surface-micromachining techniques. The inherent parallelism, the ultrahigh areal densities and the small form factor may open up new perspectives and opportunities for application in areas beyond those envisaged today.
NANO-TECHNOLOGY
The construction of materials whose physical constraints such as length, area, volume rang from 1nm to 100nm. The properties of materials such as physical, chemical, etc,. at this scale are different from at usual scale.
A physicist Richard P. Feynman in December 1959 introduced this concept and he said that "There's Plenty of Room at the Bottom - An Invitation to Enter a New Field of Physics." He notified the possibility of construction of a structure by atom-by-atom from individual atoms which are precisely joined by chemical forces. Finally this led to the a robotic device at nanoscale dimensions that could automatically assemble atoms to create molecules of the desired chemical compounds based on the new concept “universal assembler”. For instance diamond can be formed from such a robot from basic carbon atoms with low cost and large size, light weight, highly hard.
NANOTECHNOLOGY APPLIED TO STORE DATA
Silicon-based semiconductor memory chips and magnetic hard drives have been dominating the data-storage market and they have their limitations as magnetic data storage can not exceed the areal density 250 Gbit/in2. At the same time DRAM, SRAM, FLASH Memory chips having the limitations no of Transistors per chip and difficulties in decreasing feature size(2λ). These limitations can be overcome through the new innovative technology namely NANO TECHNOLOGY. Applying nanotechnology to data storage will result in memory devices with high capacity of aeral density of 1 TeraByte/square inch. Techniques that use nanometer-sharp tips for imaging and investigating the structure of materials down to the atomic scale, such as the atomic force (AFM) is suitable for the development of ultrahigh-density storage devices. As the simple tip is a very reliable tool for the ultimate local confinement of interaction, tip-based storage techno-logies can be regarded as natural candidates for extending the physical limits that are being approached by conventional magnetic and semiconductor storage.
NANO-TIP
A sharp pointer type object having nano dimensions is a nano-tip are cantilever. Several of such tipscalled probe and large no.of such probes is used to write and read back data using thermomechanical method on a thin polymer film. The thermomechanical probe-based data-storage concept, millipede_, combines ultrahigh density, small form factor, and high data rates by means of highly parallel operation of a large number of probes. This device stores digital information in a completely different way from magnetic hard disks, optical disks, and transistor-based memory chips. The ultimate locality is provided by a tip, and high data rates result from the massively parallel operation of such tips.
CONCLUSION
A very large 2D array of AFM probes has been operated for the first time in a multiplexed/parallel fashion, and write/read/erase operations in a thin polymer medium have been successfully demonstrated at densities significantly higher than those achieved with current magnetic storage systems.
The _millipede_ array has the potential to achieve ultrahigh areal storage densities on the order of 1 Tbit/in.2 or higher. The high areal storage density, small form factor, and low power consumption render the _millipede_ concept a very attractive candidate as a future storage technology for mobile applications because it offers several gigabytes of capacity at data rates of several megabytes per second.
Although several of the basic building blocks of _millipede_ technology have been demonstrated (high-density thermomechanical writing and reading), there are a number of issues that need further investigation, such as overall system reliability, including long-term stability of written indentations, tip and media wear, limits of data rates, array and cantilever size as well as tradeoffs between data rate and power consumption.
DATA STORAGE
[attachment=66791]
ABSTRACT
Storing data in the storage devices such as Magnetic Tape drives, Hard drives, Floppy drives, Compact-Disc, DRAM, SRAM, FLASH, etc, is important for the information technology world. But as this industry growing on the needs of storing data is increasing tremendously. We require high data capacity, high data transfer rates. Current trend storage devices can not meet this requirement. In this medley Nanotechnology is useful to design high data compression storage devices with higher data rates. In this regard Ultrahigh storage densities of up to 1 Tb/in2. or more can be achieved by using local-probes techniques to write, read back, and erase data in very thin polymer films. The thermomechanical scaning-probe-based data-storage concept, internally dubbed “millipede”, combines ultrahigh density,, and high data rates. High data rates are achieved by parallel operation of large 2D arrays with thousands micro/nanomechanical cantilevers/tips that can be batch-fabricated by silicon surface-micromachining techniques. The inherent parallelism, the ultrahigh areal densities and the small form factor may open up new perspectives and opportunities for application in areas beyond those envisaged today.
NANO-TECHNOLOGY
The construction of materials whose physical constraints such as length, area, volume rang from 1nm to 100nm. The properties of materials such as physical, chemical, etc,. at this scale are different from at usual scale.
A physicist Richard P. Feynman in December 1959 introduced this concept and he said that "There's Plenty of Room at the Bottom - An Invitation to Enter a New Field of Physics." He notified the possibility of construction of a structure by atom-by-atom from individual atoms which are precisely joined by chemical forces. Finally this led to the a robotic device at nanoscale dimensions that could automatically assemble atoms to create molecules of the desired chemical compounds based on the new concept “universal assembler”. For instance diamond can be formed from such a robot from basic carbon atoms with low cost and large size, light weight, highly hard.
NANOTECHNOLOGY APPLIED TO STORE DATA
Silicon-based semiconductor memory chips and magnetic hard drives have been dominating the data-storage market and they have their limitations as magnetic data storage can not exceed the areal density 250 Gbit/in2. At the same time DRAM, SRAM, FLASH Memory chips having the limitations no of Transistors per chip and difficulties in decreasing feature size(2λ). These limitations can be overcome through the new innovative technology namely NANO TECHNOLOGY. Applying nanotechnology to data storage will result in memory devices with high capacity of aeral density of 1 TeraByte/square inch. Techniques that use nanometer-sharp tips for imaging and investigating the structure of materials down to the atomic scale, such as the atomic force (AFM) is suitable for the development of ultrahigh-density storage devices. As the simple tip is a very reliable tool for the ultimate local confinement of interaction, tip-based storage techno-logies can be regarded as natural candidates for extending the physical limits that are being approached by conventional magnetic and semiconductor storage.
NANO-TIP
A sharp pointer type object having nano dimensions is a nano-tip are cantilever. Several of such tipscalled probe and large no.of such probes is used to write and read back data using thermomechanical method on a thin polymer film. The thermomechanical probe-based data-storage concept, millipede_, combines ultrahigh density, small form factor, and high data rates by means of highly parallel operation of a large number of probes. This device stores digital information in a completely different way from magnetic hard disks, optical disks, and transistor-based memory chips. The ultimate locality is provided by a tip, and high data rates result from the massively parallel operation of such tips.
CONCLUSION
A very large 2D array of AFM probes has been operated for the first time in a multiplexed/parallel fashion, and write/read/erase operations in a thin polymer medium have been successfully demonstrated at densities significantly higher than those achieved with current magnetic storage systems.
The _millipede_ array has the potential to achieve ultrahigh areal storage densities on the order of 1 Tbit/in.2 or higher. The high areal storage density, small form factor, and low power consumption render the _millipede_ concept a very attractive candidate as a future storage technology for mobile applications because it offers several gigabytes of capacity at data rates of several megabytes per second.
Although several of the basic building blocks of _millipede_ technology have been demonstrated (high-density thermomechanical writing and reading), there are a number of issues that need further investigation, such as overall system reliability, including long-term stability of written indentations, tip and media wear, limits of data rates, array and cantilever size as well as tradeoffs between data rate and power consumption.