19-06-2014, 03:12 PM
PLASTIC MEMORY
[attachment=65071]
Introduction
Main challenge in computer construction is the design of new memory chips with decreased size.
Imagine a scenario where the memory stored in your digital camera or personal digital assistant is partially based one of the most flexible materials made by man :plastic.
Scientists at HP lab and Princeton University are excited a new memory technology that could stored more data and cost less than traditional silicon-based chips for mobile devices such as handheld computers ,cell phones and MP3 players.
What is plastic memory
It is a two terminal device that can be written and erased repeatedly by voltage pulses for e.g. -4v & +4v.
It a technique that store a megabit of data in a millimeter square device
STRUCTURE OF PLASTIC MEMORY
The experimental devices to contain two polymer layers.
The first layer consist of PEDOT
SS .
The second layer consist of P3HT (3hexylthiophene) with the plasticizer
Polythylene dioxythiopene (pedot)
PEDOT’s ability to conduct electricity. It is already used widely as the anti-static coating on camera film. But until now ,no one suspected that it could be converted into an insulator.
The material is a blend of a negatively charged polymer called PSS and a positively charged one PED.
Spin Electronic structure
It is a thin strip of dark blue organic-based magnet layered with a metallic ferromagnetic connected to two electrical leads.
The data is recorded & retrieved from it by controlling the spin of the electrons with a magnetic field
HOW IT WORK
The device is a polymer that conducts low amount of electricity , but if the high amounts are applied it loss its ability to conduct forever.
So the polymer is like a fuse. Too much voltage and it blows.
We apply a large current to write the data.
PEDOT is ferroelectric polymer
COMPARISON WITH FLASH MEMORY
Plastic memory is fast.
Let a devices with a 1GB storage capacity have yielded read/write cycle times that are 10 times faster than COMPACT FLASH ,typically 2-10 MB/s read ,1-4/s write.
It require far transistors ,typically only 0.5 M (million) for 1GB of storage , compared to silicon’s 1.5-6.5 B(billion).
It has very low power consumption.
ADVANTAGES
One mega bit of information could fit into a millimeter –square device.
Technology could potentially store more data than flash , and perhaps even become fast enough to store videos.
Scientists suggest , producing it wouldn`t requir high temperatures or vacuum chamber.
It`s a very cheap technology which gives it a upper hand over other technology
CONCLUSION
It is 10 times denser then current magnetic memories .
Store mega-bit of data in millimeter-square device.
Data can not be rewritten so suitable for permanent storage.
It requires only few transistors .
Retain data with out power.
Low cost.
[attachment=65071]
Introduction
Main challenge in computer construction is the design of new memory chips with decreased size.
Imagine a scenario where the memory stored in your digital camera or personal digital assistant is partially based one of the most flexible materials made by man :plastic.
Scientists at HP lab and Princeton University are excited a new memory technology that could stored more data and cost less than traditional silicon-based chips for mobile devices such as handheld computers ,cell phones and MP3 players.
What is plastic memory
It is a two terminal device that can be written and erased repeatedly by voltage pulses for e.g. -4v & +4v.
It a technique that store a megabit of data in a millimeter square device
STRUCTURE OF PLASTIC MEMORY
The experimental devices to contain two polymer layers.
The first layer consist of PEDOT
SS .The second layer consist of P3HT (3hexylthiophene) with the plasticizer
Polythylene dioxythiopene (pedot)
PEDOT’s ability to conduct electricity. It is already used widely as the anti-static coating on camera film. But until now ,no one suspected that it could be converted into an insulator.
The material is a blend of a negatively charged polymer called PSS and a positively charged one PED.
Spin Electronic structure
It is a thin strip of dark blue organic-based magnet layered with a metallic ferromagnetic connected to two electrical leads.
The data is recorded & retrieved from it by controlling the spin of the electrons with a magnetic field
HOW IT WORK
The device is a polymer that conducts low amount of electricity , but if the high amounts are applied it loss its ability to conduct forever.
So the polymer is like a fuse. Too much voltage and it blows.
We apply a large current to write the data.
PEDOT is ferroelectric polymer
COMPARISON WITH FLASH MEMORY
Plastic memory is fast.
Let a devices with a 1GB storage capacity have yielded read/write cycle times that are 10 times faster than COMPACT FLASH ,typically 2-10 MB/s read ,1-4/s write.
It require far transistors ,typically only 0.5 M (million) for 1GB of storage , compared to silicon’s 1.5-6.5 B(billion).
It has very low power consumption.
ADVANTAGES
One mega bit of information could fit into a millimeter –square device.
Technology could potentially store more data than flash , and perhaps even become fast enough to store videos.
Scientists suggest , producing it wouldn`t requir high temperatures or vacuum chamber.
It`s a very cheap technology which gives it a upper hand over other technology
CONCLUSION
It is 10 times denser then current magnetic memories .
Store mega-bit of data in millimeter-square device.
Data can not be rewritten so suitable for permanent storage.
It requires only few transistors .
Retain data with out power.
Low cost.