24-12-2012, 05:41 PM
PLASTIC MEMORY
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ABSTRACT
A series of advances in organic memory technology is demonstrated that enable an
entirely new low-cost memory technology. Researchers incorporate these advances
with the one of the most flexible material PLASTIC. This novel memory technology
can be utilized in a three-dimensional onetime- programmable storage array. Without
the prohibitive costs of silicon processing, this memory is capable of setting cost
points several orders of magnitude lower than their inorganic counterparts. They have
also successfully integrated this technology onto flexible plastic substrates. Combined
with stacking, these vertical memory elements can create ROM densities denser than
many inorganic memories, at a fraction of the cost.
A conducting plastic has the potential to store a mega bit of data in
a millimeter- square device-10 times denser than current magnetic memories. This
device is cheap and fast, but cannot be rewritten, so would only be suitable for
permanent storage. The device sandwiches a blob of a conducting polymer called
PEDOT and a silicon diode between perpendicular wires.
INTRODUCTION
The idea of ubiquitous computing is extremely attractive. The idea of electronics
integrated into everyday items is extremely attractive, but currently well beyond the
cost structure inherent to silicon chips. From integrated displays to radio-frequency
identification, silicon solutions remain economically out of reach due to high material
costs, processing costs, and the need for clean-room fabrication. In essence, a
significant paradigm shift is necessary to enable electronics to be cheaply built in to
everyday items.
OVERVIEW OF PLASTIC MEMORY
Plastic memory is one kind of organic semiconductor device. Imagine a scenario
where the memory stored in your digital camera or personal digital assistant is
partially based on one of the most flexible materials made by man: PLASTIC.
Scientis ts at HP Labs and Princeton University are excited a new
memory technology that could store more data and cost less than traditional siliconbased
chips for mobile devices such as handheld computers, cell phones and MP3
players. A conducting plastic has been used to create a new memory technology with
the potential to store a megabit of data in a millimeter-square device - 10 times denser
than current magnetic memories. The device should also be cheap and fast, but cannot
be rewritten, so would only be suitable for permanent storage.