ByMarcus Fuentes

Texas A&M University Kingsville

Special Semiconductor that emits light

It comes in an assortment of sizes

Sizes determine the color of light is seen

Some quantum dots are formed because a small region of one material burring in another with a larger band gap

Some form spontaneously in quantum well structures

A few self assembled form a nucleus spontaneously

And some can be created from two dimensional electrons or gases present in remotely doped quantum wells or semiconductor heterostructures

Colloidal synthesis is the cheapest and least toxic

Electrochemical techniques involve templates that are created by an ionic reaction that in turn create quantum dots

Pyrolytic synthesis involves the production of large numbers of quantum dots that self-assemble into preferential crystal sizes

Detection of tumors Used as a substitute for organic dyesSilicon photovoltaic cellsLight-emitting diodes and other light sourcesUsed to battle counterfeit money

Look at what I can do

ToxicityHigh cost of manufacturingUnable to accurately predict

Drawbacks

Quantum dot is an iridescent nanomaterial

Fabrication is expensiveNew applications found

everydayGrowing advantages in the

medical fieldManufacturing is random

and toxicity is a possibility

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