five dimensional optical recording (5d dvd)
DESCRIPTION
5 Dimensional Optical Storage is a new technology which uses the wave length and polarization of light along with the other three dimensions of space to create high density, high storage discs that can store upto 10 Tera Bytes of data.TRANSCRIPT
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