Download - Quantum Dots

Matt Kennedy - 2008

Index

Quantum Dot Presentation

• The Quantum Dot• Background• Where We Are Now• Future

The Quantum DotBasically a single electron trapped inside

a cage of atoms

When the dot is exposed to a pulse of light at the right wavelength and time, the electron is raised to an excited state

A second burst of light causes the electron to fall back to its ground state

These dots then have the ability to glow

Light Emitting Quantum Dots

The Quantum Dot

The Quantum Dot

Quantum dots, are a special class of materials known as semiconductors

Semiconductors are a cornerstone of the electronics industry and make possible personal computers

Quantum dots special because they are so small, 4,000,000 dots take up 2cm

Semiconductor Wafer

The Quantum Dot

At these small sizes quantum dots enable never before seen applications to science and technology

New markets and applications emerge as we continue to innovate, work and master the quantum dot technology

Background“The early semiconductor work

of Bell Labs in 1947 led to a whole revolution in electronics”

“When we discovered quantum confinement in nanocrystals in the early 80’s, we knew this would be an exciting area of scientific exploration and discovery” Dr. Alexander Efros

Background

“Explorations into the science of quantum dots began decades ago”

“The technology is finally gaining momentum”

Where We Are Now

We are at the beginning stages of the quantum dot future

Research into harnessing the dots potential is well underway

The following illustrate what technology's are to come

FutureDisplays

Unlike traditional LCDs, which must be lit from behind, quantum dots generate their own light

Depending on their size, the dots can be "tuned" to emit any colour in the rainbow Light Emitting Quantum Dot

Solution

FutureDisplays

The colours of light they produce are much richer than that of other sources

The dots in the near future will be used for extremely thin, bright flat-panel displays

Later on the dots will be built into flexible screens

FutureDisplays

Imagine a foldable wide screen TV, or a truly foldable phone, right in your pocket

Image a future where instead of paint, you have walls which are screens

FutureFoldable Display Example

Foldable / Solar Cell Phone

FutureDisplays

Imagine walls that can display movies or the latest TV show

Walls that can change colours to your mood, and help you get to sleep

Furniture coated with a paint, which can be programmed to show act as a computer or TV

Future

The opportunities are endless

FutureSolar Cells

The solar cell industry is advancing at a rapid pace, spurred on by the increasing need for new and clean sources of power

Quantum dot based solar are poised to play a leading role in this revolution

FutureSolar Cells

Leading researchers and institutions are investigating various ways in which quantum dots can be incorporated into semiconductor surfaces

Or inks and deposited onto low cost materials

FutureSolar Cells

Quantum dots are cost effectively produced in bulk via chemical manufacturing techniques

This will ultimately lead to lower cost higher output cells

FutureSolar Cells

Imagine painting on your roof, a invisible layer of quantum dot solar cells

This could effectively power you whole house, in rain or shine

FutureSolar Cells

Imagine devices that use electricity, have their own solar cell coating

This would enable truly wireless power and independence, away from being stuck near a power outlet

Or cell phones and other portable devices, never needing to be plugged into the power sockets

FutureComputer Storage

Researchers are looking into a solution to vastly increase a computers hard drive space, as well as fast writing speed

So far an answer to this is the Quantum Dot

These quantum dots are tiny “islands” of semiconductor which comprise memory, and are capable of creating storage which is large, fast, and long lasting

FutureComputer Memory

Researchers have recently shown that so far quantum dot memory is capable of storing one terabyte (1000 gigabytes) of data per square inch

They have also shown that it’s possible to write information to this memory in just 6 nanoseconds

That’s blazing fast!

FutureProgrammable Matter

As semiconductor technology and nanotechnology have advanced the use of the term programmable matter has changed

This is now used to reflect the fact that it is possible to build an ensemble of elements which can be "programmed" to change their physical properties in reality not just in simulation


By the manipulation of quantum dots - "artificial atoms" - we can create materials that have some of the properties of real elements

Change the electron population in the quantum dots and you change the material


Imagine materials with unheard-of durability, hardness, conductivity and insulation abilities, and the ability to transition from one mode to another when needed

So effectively you could have a light weight breathable "leather" jacket that turns into high carbon steel when you fall off your motorcycle.

FutureOther Areas

These Include :

Medical Dyes, with the ability to diagnose diseases well ahead of time

Security Tags

And many more, as the technology continues to evolve

Sourceshttp://www.evidenttech.com/

http://www.azonano.com/details.asp?ArticleID=564

http://web.mit.edu/newsoffice/2002/dot.html

http://nextbigfuture.com/2006/05/quantum-dots-could-create-65-efficient.html

http://sparkingtech.com/tech-sci-news/quantum-dots-may-be-future-of-computer-memory/

http://en.wikipedia.org/wiki/Quantum_dot

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