QuantumDotsandTheirApplications-ChemistryDepartment.pptVIP

James McDaniel Physics 3500 Nanochemistry Why I chose this topic? Useful Now: I chose to research and present on the science and applications of Quantum Dots because of the many interesting and important applications currently in use by this nano-technology. The Future is Bright: The usefulness and application of Quantum Dot technology continues to expand and research is striving to bring their benefits to more and more technologically applied fields. What are Quantum Dots? Quantum dots are semi-conductors that are on the nanometer scale. Obey quantum mechanical principle of quantum confinement. Exhibit energy band gap that determines required wavelength of radiation absorption and emission spectra. Requisite absorption and resultant emission wavelengths dependent on dot size. Confinement - Infinite Square Well Potential Quantum Dots Description… The emission and absorption spectra corresponding to the energy band gap of the quantum dot is governed by quantum confinement principles in an infinite square well potential. The energy band gap increases with a decrease in size of the quantum dot. Quantum Confinement Medical Imaging and Disease Detection Can be set to any arbitrary emission spectra to allow labeling and observation of detailed biological processes. Quantum Dots can be useful tool for monitoring cancerous cells and providing a means to better understand its evolution. In the future, Qdots could also be armed with tumor-fighting toxic therapies to provide the diagnosis and treatment of cancer. Qdots are much more resistant to degradation than other optical imaging probes such as organic dyes, allowing them to track cell processes for longer periods of time. Quantum dots offer a wide broadband absorption spectrum while maintaining a distinct, static emission wavelength. Quantum Dot LEDs Used to produce inexpensive, industrial quality white light. Marked improvement over traditional LED–phosphor integration by dot’s ability to absorb and emit at any desir