Taking a Look at Quantum Dots

Semiconductor Nano crystals or quantum dots are materials that are typically 2-20 nm in diameter, consisting of approximately twelve to fourteen thousand atoms. The effect of quantum confinement results, in the electrons and holes in the Nano crystal to exhibit quantized energy states; thus enabling them to exhibit novel physical properties that are not found in their bulk counterparts. Research in semiconductor quantum dots started with the realization that the optical and electronic properties of these particles were strongly dependent on particle size, due to quantum confinement of the charge carriers in small spaces.

The use of nano-materials and extreme precision micro-engineering has the potential for great improvement in the world of electronics and information technology by providing smaller, faster, and more powerful computers and this has been at the forefront of the nanotechnology commercialization . Great examples of how nanotechnology is currently being used in these fields are products such as processors, data storage, and memory components made with nano-materials, TVs, monitors and even smartphone screens that use organic light-emitting diodes (OLED), and waterproof electronics such as smartphones due to the application of nano-coatings

These findings are significant because super-resistant bugs are already rampant in hospitals, and are only one mutation away from exploding into an epidemic of untold scale. Consequently, the researchers view quantum dots as a figurative platform technology, upon which more advanced methods can be tested against a wide range of infections, with a possible expansion into therapeutics on the

In order to fix these shortcomings, Mark Kendall and his team have come up with a solution called Nanopatch. The Nanopatch technology is made with

When the spatulas come in contact with a surface the nanostructures stick onto the surface by dipole-dipole interactions called van der Waals interactions. One seta can create almost 200 N. There are more than 3 million setae in both their feet combined thereby proving that

Nanoparticles (1 000 000 times smaller than a millimetre) are manifesting to be a great success in nanomedicine’s discovery of supplementary methods of fighting against superbugs. At the University of Colorado, researchers have utilized nanoscale quantum dots, which are “miniscule semiconductor particles with specific light-absorption properties, to kill drug-resistant superbugs without harming the surrounding healthy tissue,” (Nagpal, 2017: para. 2). Nanoscale quantum dots that are activated by a light source perturb the balance of chemical processes in threatening bacteria that would kill them.

When exposed to sunlight, the the top layer of plasmonic nanoparticle discs produces hot electrons. After this step is complete, it is vital that the hot electrons are alienated from the electron holes, in order to preserve their energy. The middle layer of aluminum plays its part, as it causes for the electron holes to gravitate toward it. The bottom layer of nickel oxide traps the hot electrons, while allowing for the electron holes to pass through. If the device is immersed in water, the molecules can then be broken down into simpler

Some metals emit electrons when a certain frequency of light is shined on them, this is called the photoelectric effect. Photons are particles of electromagnetic radiation with no mass, and each carries a quantum of

At Reed College, my ongoing work delves into the structural design and photophysical properties of pigment assemblies22 and carbon-based quantum materials (carbon dots)23 derived from protein-based precursors. The research objectives connect structural chemistry and biophysics with the bionanomaterials and environmental science, offer attractive prospects for experimental and computational studies, and support cross-disciplinary academic interests and research opportunities in collaborative settings.

Encyclopedia Britannica tells us that the interaction between these particles is crucial to the formation of the lights.

The Quantum Mechanics are weird, yet incredibly powerful theory of the subatomic world, in which everyday concepts to do with the forces and motion are seen in a different perspective, as they do not longer apply in the same way. This calls for a new type of mechanics based on what scientists call "quantum" rules.

Nanotechnology is the development of atoms in a certain object. Nanotechnology has become very popular in the past few years. It is a way to rebuild the systems of life. To make systems move faster than ever before. Nanometer is about 10 times the size of an atom. Each of these has a huge effect on a system. Still there are questions out there that keep people wondering how important nanotechnology is to us. Many wonder how will it affect them and if we should continue this research. I myself wondered about nanotechnology. After researching this topic I have learned new and interesting facts to help me understand the entire concept.

Background Facts: Dippin’ Dots are known for their “ice cream of the future.” Dippin’ Dots are BB size pellets of flash frozen ice cream, frozen with liquid nitrogen, which locks in both flavor and freshness by eliminating the presence of trapped ice and air, giving the ice cream a fresh flavor and a hard texture. This is their core competency.

Less than 100 years ago, beginnings of the “new quantum theory” began. Only about 55 years after the new quantum theory began to emerge the idea that quantum phenomena can be used to perform computations. The idea being for a quantum computer was that classical computers would take an extremely long time to perform huge calculations, when a simple quantum system perform these same calculations all the time.

We have now discussed the two extremes in electronic materials; a conductor, and an insulator we will now move to a material that lies in between these two, a semiconductor. The