Crystal-handedness revealed by twisted electron be
Post# of 22456
Posted On: 04/08/2015 5:27:33 PM
Crystal-handedness revealed by twisted electron beams
Chirality can have a significant effect on the chemical and biological properties of some molecules , making it a measurement of particular interest to those developing new pharmaceutical compounds .
The chirality of molecules in a relatively large sample can be measured by passing polarized light through it. If the sample contains equal numbers of right- and left-handed molecules, the polarization will not change. However, if there is more of one enantiomer than the other, the polarization will be rotated. The problem is that the interaction is inherently weak, and so does not work with very small samples – particularly nanoparticles and single molecules that are much smaller than the wavelength of the light used.
http://nanotechweb.org/cws/article/tech/60788
....does not work well with small samples made me think of 20 gram samples sent out by QMC, lol
Chirality can have a significant effect on the chemical and biological properties of some molecules , making it a measurement of particular interest to those developing new pharmaceutical compounds .
The chirality of molecules in a relatively large sample can be measured by passing polarized light through it. If the sample contains equal numbers of right- and left-handed molecules, the polarization will not change. However, if there is more of one enantiomer than the other, the polarization will be rotated. The problem is that the interaction is inherently weak, and so does not work with very small samples – particularly nanoparticles and single molecules that are much smaller than the wavelength of the light used.
http://nanotechweb.org/cws/article/tech/60788
....does not work well with small samples made me think of 20 gram samples sent out by QMC, lol
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