Cholesteric liquid crystals as weathering indicators for marble surfaces

δείτε την πρωτότυπη σελίδα τεκμηρίου
στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*



Cholesteric liquid crystals as weathering indicators for marble surfaces (EN)

Bisbikou, K (EN)
Moropoulou, A (EN)
Koui, M (EN)

journalArticle (EN)

2014-03-01T01:15:30Z
2000 (EN)


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)

Crystallography (EN)

SUPPORT (EN)
OXIDE (EN)
SORPTIVE PROPERTIES (EN)
cholesteric liquid crystal (EN)

LIQUID CRYSTALS (EN)

Αγγλική γλώσσα

TAYLOR & FRANCIS LTD (EN)




*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.