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National Institute of Advanced Industrial Science and Technology (AIST) Prints Memory on Plastic Substrate.


Tokyo, Japan, Dec 20, 2005 - (JCN JCN Japan Corporate News
JCN Journal of Cognitive Neuroscience
JCN Journal of Cardiovascular Nursing
JCN Journal of Christian Nursing
JCN Job Control Number
JCN Journal of Child Neurology
JCN joint communications network (US DoD) 
) - The Organic Semiconductor Devices Group of the Photonics Research Institute of the National Institute of Advanced Industrial Science and Technology The National Institute of Advanced Industrial Science and Technology (産業技術総合研究所  (AIST AIST Advanced Industrial Science and Technology (Japan)
AIST National Institute of Advanced Industrial Science and Technology (Japan)
AIST Association for Iron & Steel Technology
) has prototyped a memory device that has a 3x3 memory array printed on a flexible plastic film substrate.

The research group used a soluble biopolymer bi·o·pol·y·mer
n.
A macromolecule, such as a protein or nucleic acid, that is formed in a living organism.



biopolymer

any protein or nucleic acid produced by a living organism.
 material with a bar-like helix structure to create a ferroelectric Refers to a material that functions similarly to a ferromagnetic material in that it can be polarized into two states. Ferroelectric devices generally do not have any "ferrous" (iron) in them. See FeRAM and ferroelectric capacitor.  thin film by changing inter-molecular interactions by controlling the molecular weight and molecular structure of the biopolymer.

Then, the group has made a two-terminal device that has the ferroelectric thin film, treated as a dielectric layer, placed between electrodes, and confirmed that the device demonstrates memory capability.

Using the ferroelectric biopolymer thin film and an organic semiconductor, the group has prototyped a 3x3-pixel-equivalent memory array screen-printed on a flexible plastic film and confirmed that the device retains a two-digit drain current on/off ratio for more than 10 days after power is turned off.

Photo: http://www.aist.go.jp/aist_j/press_release/pr2005/pr20051219/pr20051219.html

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Publication:JCNN News Summaries
Date:Dec 20, 2005
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