tag:blogger.com,1999:blog-9818962.post8664254262442251443..comments2024-03-20T13:10:11.477+05:30Comments on nanopolitan: Prof. Balaram's Editorial on This Year's Chemistry NobelAbihttp://www.blogger.com/profile/06790560045313883673noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-9818962.post-50917620503450114282011-10-21T21:17:46.875+05:302011-10-21T21:17:46.875+05:30Another chemical controversy worth mentioning is t...Another chemical controversy worth mentioning is the non-classical ion debate waged principally by H C Brown and Saul Winstein in the 60s and 70s. Some say Winstein died early partly because of the stress.<br /><br />Ajit: I don't know about crystals but here's a recent attempt trying to mathematically capture the order-disorder continuum in case of proteins.<br /><br />Protein structure along the order-disorder continuum.<br />Fisher CK, Stultz CM.<br />J Am Chem Soc. 2011 Jul 6;133(26):10022-5. Epub 2011 Jun 13.Wavefunctionhttps://www.blogger.com/profile/14993805391653267639noreply@blogger.comtag:blogger.com,1999:blog-9818962.post-64879424343958970602011-10-20T13:39:08.026+05:302011-10-20T13:39:08.026+05:30Hi all,
Are there any mathematical measures to ad...Hi all,<br /><br />Are there any mathematical measures to adequately capture the entire spectrum of orderliness, from full order to full disorder: i.e. the spectrum from materials of highest order (e.g. an FCC/HCP metal) through various materials of intermediate order (quasicrystals, polymers of varying degrees of crystallinity, liquid crystals), through any possible order present in liquids, and so on, on to the greatest disorder (gases)?<br /><br />Any measure other than the broadening of the essentially discrete diffraction spots (or the softening of their otherwise sharp boundaries)? (BTW, has any one at all used such broadening/softening, as a serious quantitative measure of the order/disorder?) <br /><br />If yes, how do the proposed measures factor in, or deal with, the issue of the scale (i.e. the resolution), and the periodicity or otherwise of the reference volume itself?<br /><br />Thanks in advance for any links/thoughts.<br /><br />--Ajit<br />PS: Another related question: What about discrete spots that are not very well ordered in the Fourier space (i.e. in the diffraction pattern)? How do they deal with that, in the theory---if they at all do?<br /><br />[E&OE]Anonymousnoreply@blogger.com