Fig. 1: Cryo-TEM image of typical paramagnetic liposome preparation used in the present studies.
In nuclear magnetic resonance (NMR) spectroscopy, the chemical shift is the resonant frequency of a nucleus relative to a standard in a magnetic field. Often the position and number of chemical shifts are diagnostic of the structure of a molecule. Chemical shifts are also used to describe signals in other forms of spectroscopy such as photoemission spectroscopy.
Chemists design a quantum-dot spectrometer | MIT News | Massachusetts Institute of Technology
MIT chemists have designed a quantum-dot spectrometer small enough to function within a smartphone. This could enable portable light analysis, which could be used to diagnose diseases or detect environmental pollutants.
https://news.mit.edu/2015/quantum-dot-spectrometer-smartphone-0701
Smart meters create another source of short bursts of radiation within our own homes.
A photonic crystal is an optical nanostructure in which the refractive index changes periodically. This affects the propagation of light in the same way that the structure of natural crystals gives rise to X-ray diffraction and that the atomic lattices of semiconductors affect their conductivity of electrons
