Five Dimensional Optical Recording (5D DVD)

Optical Recording

5D Optical Recording

Design of Recording medium

Reading and Writing

Fields of Applications

Adv, Disadv, Scope

OPTICAL RECORDING

Recording on a

Photographic medium using light

Data is present on the surface of the medium in the form of bumps and pits

Reading logic ‘0’ Reading logic ‘1’

5 Dimensional Optical Recording

Phd student - Peter ZijlstraDept. of Micro Photonics

Swinburne University of TechnologyHawthorn, Australia

Introduced two more dimensions to existing 3D optical recording

Dimensions of Data Storage

Parameter used to identify each bit of DATA

3 Spatial Dimensions

Color

Polarization

Recording medium

comes in the shape of a normal DVD, but thickness may vary

Gold nanorods in polymer solution coated on thin glass layer

Spacer

Polycarbonate substrate

SURFACE PLASMON RESONANCE

emerges from the interaction between an electromagnetic wave and the conduction electrons in a metal

conduction electrons vibrate under the irradiation of light at a resonant frequency

Nanorods collapses to spheres

Wavelength and polarization of light

Size and shape of nanoparticle

Effect of COLOREDCOLORED Light on Gold Nanorods

Effect of POLARIZEDPOLARIZED Light on Gold Nanorods

polarization of light electric field

component is restricted

to a particular direction

Writing

Tunable laser is used : Titanium Sapphire Femtosecond Laser

Light impinging with a certain color and polarization will only target a subpopulation of gold nanorods, leaving the remaining rods for

the next recording

Reading

Reading performed by 2 Photon Luminescence

Nanorods shine as they absorb light with same wavelength and

polarization that changed their shape during recording

Large storage space

Compact and light

Can be manufactured on a large scale

Slow Writing speed

Impracticality of using Titanium Sapphire Femtosecond Laser

Not easily re-writable

Cost Concerns

Fields of Application

Medical Field

Entertainment sector

Space Research

Financial sector

Future Scope

has taken the rights of developing the drive

Available in the market within 5 to 10 years

Can increase the capacity to 10 TB

Development of cheaper nanoparticles

Promising approach for bulk data storage

By introducing color and polarization dimension to existing technology, storage capacity can be

increased to 1.6 TB

With new advancement the storage can be increased to 10TB

Conclusion

References

[1] Nanophotonics Down Under 2009 Devices and Applications - www.swinburne.edu.au

[2] Nano-particle Based Multi-Dimensional Data Storage. By Xiangping Li (Thesis) - www.tr.im/5DDVD

[3] Five dimensional optical recording - http://u.nu/5fxr

[4] Nanotech DVD - http://u.nu/7fxr

[5] Five dimensional optical recording (journal) - http://u.nu/9fxr

[6] Five dimensional optical recording - Technology Review (digital magazine) - (Published by MIT) - http://u.nu/3gxr