Millepede 2

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W H A T I S A CA NT IL EVER ? W H A T I S A CA NT IL EVER ?

TwoTwo--dimensional array of dimensional array of silicon probessilicon probes

Most recent arrayMost recent arraydesign consists of andesign consists of anarray of 64array of 64 6464cantilevers (4096) on acantilevers (4096) on a100100 m pitchm pitch


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FE A TURESStorage capacity 1 Tb / sq inch

Equal to 25 DVD

25 billion texts in a stamp sized surface

Enable 10Gb of storage in cell phones

Highly reliable

Millipede Memory


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Uses atomic force probes

Stores & reads data thermo-dynamically

Access time is small

Data rate is 1Gb/s

Needs less power about 100mw

RE A DI NG & WR I T I NG DA T A

Millipede Memory


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WR I T I NG DA T A

Probe tip heated above glass transition temperature (of about 400

degrees Celsius).

The hot tip softens the polymer and briefly sinks into it

Generating an dent.

Millipede Memory

C2


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Slide 13

C2 F or the device to perform its reading, writing and erasing functions, the cantilever tips are brought into contact with the storagemedium a thin film of a custom designed cross-linked polymer coated on a silicon substrate, which is moved in the x- andy-directions. The storage medium is positioned with nanometer-scale accuracy relative to the cantilever array.C

obra, 7/31 /20

10


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RE A DI NG DA T A

Probe tip heated around 300 degrees Celsius

When the tip drops into an pit

Electrical resistance drops

Translated to a 1 bit

Millipede Memory


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OVERWR I T I NG DA T A

The tip makes a series of offset pits

Overlap so closely their edges fill in the old pits, effectively

erasing the unwanted data.

The write or overwrite cycles are limited to 1,00,000

cycles.

Millipede Memory


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STOREDB I TS STOREDB I TS

Fig. shows that moreFig. shows that morethan 80 percent of thethan 80 percent of the

1,024 cantilevers of an1,024 cantilevers of anexperimental setupexperimental setupwere able to write datawere able to write data(12 storage areas at(12 storage areas atright).right).


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DRAM - 10Gb/ sq inch

Flash ram - 25Gb/ sq inchHard drives - 250Gb/ sq inch

Millipede 1Tb/ sq inch

A RE A L DENSI TY

Millipede Memory


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High storage capacity (1 Tb/in2).

Very small form factor.

Low power consumption (100 milliwatts).Low seek times.

High data rate (high as 1 Gb/s).

Long-term perspectives.

A DV A NT A GES

Millipede Memory


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A PPLI CA T IONSMicro Drives

Millipede Memory

Small Foot Print Devices

Watches

Mobile phonesPersonal media systems

High-capacity hard drives

C3


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Slide 20

C3 F ootprint can also refer to the amount of disk space required by an application.Cobra, 8/2/20 1 0


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CURRENT ST A TE OF T H E A RT CURRENT ST A TE OF T H E A RT

Progress to a commercially useful product has beenProgress to a commercially useful product has beenslower than expectedslower than expected

Appears to be in a raceAppears to be in a race

64 x 64 cantilever chips with a 7mm x 7mm data sled64 x 64 cantilever chips with a 7mm x 7mm data sled


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Preparing high capacity data drives

Can hold 600,000 digital images

Smart Millipede

Researching to reduce the costBit stability investigations

FUTURE SCOP E

Millipede Memory


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Millipede is a nano-storage prototype developed by IBM that can

store data at a density of a trillion bits per square inch: Millipede

uses thousands of tiny sharp points (hence the name) to punch holesinto a thin plastic film. "There is not a single step in fabrication that

needs to be invented."

CONCL USION

Millipede Memory


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Millipede Memory


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Millipede Memory

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