Cholesteric liquid crystals as weathering indicators for marble surfaces

Koui, M; Moropoulou, A; Bisbikou, K

dc.contributor.author	Koui, M	en
dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Bisbikou, K	en
dc.date.accessioned	2014-03-01T01:15:30Z
dc.date.available	2014-03-01T01:15:30Z
dc.date.issued	2000	en
dc.identifier.issn	0267-8292	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13550
dc.subject	cholesteric liquid crystal	en
dc.subject.classification	Crystallography	en
dc.subject.other	SORPTIVE PROPERTIES	en
dc.subject.other	SUPPORT	en
dc.subject.other	OXIDE	en
dc.title	Cholesteric liquid crystals as weathering indicators for marble surfaces	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/026782900750037130	en
heal.identifier.secondary	http://dx.doi.org/10.1080/026782900750037130	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Cholesteric liquid crystals have been used to study the weathered surfaces of marble from the Sanctuary of Demeter in Eleusis, near Athens. Previous investigations have shown that when a cholesteric phase is spread across the surface of the stone, the pitch of the mesophase is sensitive to the topography of the surface. The wavelength of the maximum in the reflected spectrum varies therefore with the microtexture of the surface. Small samples of surface stone from the temple which had been weathered in distinctive ways, were investigated in the laboratory. There appears to be a significant correlation between the optical reflectance spectra and the surface microtopography investigated by SEM, as indicated by computer aided analysis (Digital Image Processing). The results point to the development of an effective in situ method of monitoring the weathering of marble surfaces using cholesteric liquid crystals.	en
heal.publisher	TAYLOR & FRANCIS LTD	en
heal.journalName	LIQUID CRYSTALS	en
dc.identifier.doi	10.1080/026782900750037130	en
dc.identifier.isi	ISI:000165437800001	en
dc.identifier.volume	27	en
dc.identifier.issue	12	en
dc.identifier.spage	1561	en
dc.identifier.epage	1571	en