Nanoscience and Nanotechnology

Quantum Dots

Quantum Dots and Magnetic Nanoparticles have lots of applications in analytical methods. Quantum Dots are semiconductor nanoparticles whose electronic energy levels are considerably controlled by the particle dimensions. This control comes about due to quantum confinement. QDs are useful as an analytical tool due to its unique optical properties. These optical properties consist of narrow emission spectra, broad absorbance spectra, emission wavelength which is adjustable by adjusting the size of the particle, high quantum efficiency and low photobleaching rates. MNPs are made of magnetite (Fe3O4) or maghemite (γ‐Fe2O3). These materials are typically superparamagnetic in the nanoscale range. The magnetic properties of these nanomaterials allow them to be manipulated by magnetic fields.