Talk:Liquid crystal

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	Liquid crystal was one of the Natural sciences good articles, but it has been removed from the list. There are suggestions below for improving the article to meet the good article criteria. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.
Article milestones Date Process Result July 5, 2006 Good article nominee Listed February 15, 2008 Good article reassessment Delisted Current Status: Delisted good article

Contents 1 older entries 2 Technical flag gone, okay? 3 Toxicity of liquid crystal materials 4 GA Re-Review and In-line citations 5 seperate nematic section from article?

[edit] older entries

I thought that the liquid crystal in an LCD turned into a half-wave plate in an electric field, and the LCD has a polarizer in it. -phma

Any info on what materials go into liquid crystals?

139.222.112.200 (talk) 11:08, 13 April 2008 (UTC)The name liquid crystals implies that we deal with a liquid state which has various degrees of order (or freedom), namely, three rotational and three translational. Isotropic liquids have none of these restrictions, and crystals have all of them, i. e. they have no freedom to rotate around any axis and to migrate in any direction. So, glasses must be a part of liquid crystals due to their ability eventualy to crystalise (to find the energy minimum as time passes), of cause, if they possess only identical molecules with the rigid core. Polymers are not liquid crystals cause one molecule do not possess any rigid part wich could have only these 6 degrees of freedom, instead it possess much more of them. However if such group is present then we can treat them as liquid crystals. And it doesn't matter whether we have only one phase (mesogen in vacuume) or more than one (lyotropic liquid crystals), however, in this case, only one of them is treated as liquid crystals mesogen139.222.112.200 (talk) 11:08, 13 April 2008 (UTC)

[edit] Technical flag gone, okay?

I made a stab at making the intro less technical (without being uninformative). I removed the 'technical' flag. I would encourage others to read what's there and put the technical flag back in if it is still too confusing. Kebes 16:57, 20 Apr 2005 (UTC)

Link to wrong Chandrasekhar at bottom of article. -Pat

[edit] Toxicity of liquid crystal materials

Does someone have the knowledge to add a section to the main page regarding the toxicity of various liquid crystal materials? It's not my area of expertise, but I know that extensive literature exists on the subject. DFH 10:55, 17 August 2006 (UTC)

[edit] GA Re-Review and In-line citations

Members of the Wikipedia:WikiProject Good articles are in the process of doing a re-review of current Good Article listings to ensure compliance with the standards of the Good Article Criteria. (Discussion of the changes and re-review can be found here). A significant change to the GA criteria is the mandatory use of some sort of in-line citation (In accordance to WP:CITE) to be used in order for an article to pass the verification and reference criteria. Currently this article does not include in-line citations. It is recommended that the article's editors take a look at the inclusion of in-line citations as well as how the article stacks up against the rest of the Good Article criteria. GA reviewers will give you at least a week's time from the date of this notice to work on the in-line citations before doing a full re-review and deciding if the article still merits being considered a Good Article or would need to be de-listed. If you have any questions, please don't hesitate to contact us on the Good Article project talk page or you may contact me personally. On behalf of the Good Articles Project, I want to thank you for all the time and effort that you have put into working on this article and improving the overall quality of the Wikipedia project. Agne 00:16, 26 September 2006 (UTC)

As part of GA quality control, I'm going to have to delist this fro m GA. Though it does have some references, it's not sufficient for the updated good article criteria. I'll pass it on to the unreferenced good article task force. --jwanders^Talk 00:35, 15 February 2008 (UTC)

[edit] seperate nematic section from article?

I think the section on the nematic phase of liquid crystal should be made it's own article. I'm not sure about the rules here, is a consensus needed? Or should a special box be put on top? If a more knowledgeable Wikipedian could help, much appreciated. --72.51.84.91 (talk) 20:13, 10 May 2008 (UTC)