Thanks for your response. What I was referring to was the absorption of near infrared light by DMSO, such when laser or LED light at that wavelength passes through pure DMSO. Do you have any info on DMSO's absorbance at that frequency? It would be of great help!
On Tue, Mar 20, 2012 at 11:20 PM, David van der Spoel <[email protected]>wrote: > On 2012-03-21 03:06, Nancy wrote: > >> Hi All, >> >> I would greatly appreciate it if anyone could provide a reference or >> information on the electromagnetic absorbance characteristics of >> dimethyl sulfoxide, especially in the region of 800-1400nm. >> >> Thank you, >> Nancy >> >> >> >> >> >> How is this measured, and what is the physical basis of this? Infrared > spectroscopy usually does not go to such high energies, does it? > 7000-12500/cm is a lot higher frequency than bond vibrations, and therefore > the only likely effect that could take place at these frequencies are > electronic effects. If you would like to compute this from a simulation the > frequency dependent dielectric constant would be the most useful thing to > try I would think, but to get reasonable numbers at high frequencies you > need a polarizable model. > > -- > David van der Spoel, Ph.D., Professor of Biology > Dept. of Cell & Molec. Biol., Uppsala University. > Box 596, 75124 Uppsala, Sweden. Phone: +46184714205. > [email protected] http://folding.bmc.uu.se > -- > gmx-users mailing list [email protected] > http://lists.gromacs.org/**mailman/listinfo/gmx-users<http://lists.gromacs.org/mailman/listinfo/gmx-users> > Please search the archive at http://www.gromacs.org/** > Support/Mailing_Lists/Search<http://www.gromacs.org/Support/Mailing_Lists/Search>before > posting! > Please don't post (un)subscribe requests to the list. Use the www > interface or send it to [email protected]. > Can't post? Read > http://www.gromacs.org/**Support/Mailing_Lists<http://www.gromacs.org/Support/Mailing_Lists> >
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