The Use of Optical Coherence Tomography for Monitoring the Subsurface Morphologies of Archaic Jades.
We demonstrate the use of the Optical Coherence Tomography (OCT) technique for non-invasive scanning of the subsurface morphologies of jade objects. The two-dimensional tomography images show the refractive index or dielectric constant variations in the samples, reflecting their structures. Three sa...
| Published in: | Archaeometry Vol. 46; no. 2; pp. 171 - 183 |
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| Main Authors: | , , , |
| Format: | Article |
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Wiley-Blackwell
May2004
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=13218411&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 13218411 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 0003813X D7X jtl: Archaeometry issn: 0003813X maglogo: Y pubinfo: dt: May2004 vid: 46 iid: 2 pid: 480 pub: Wiley-Blackwell artinfo: ui: 13218411 10.1111/j.1475-4754.2004.00151.x ppf: 171 ppct: 12 formats: tig: atl: The Use of Optical Coherence Tomography for Monitoring the Subsurface Morphologies of Archaic Jades. aug: au: Yang, M.-L. Lu, C.-W. Hsu, I.-J. Yang, C.C. affil: Department of Antiquities, National Palace Museum, 221, Section 2, Chih-shan Road, Shih-lin, Taipei, Taiwan, 111 R.O.C. Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. su: Tomography Art objects Optical coherence tomography Jade art objects Imaging systems Archaeology methodology Qijia culture sug: subj: Tomography Art objects Optical coherence tomography Jade art objects Imaging systems Archaeology methodology Qijia culture keyword: ARCHAIC JADE OBJECT OPTICAL COHERENCE TOMOGRAPHY SUBSURFACE MORPHOLOGY ab: We demonstrate the use of the Optical Coherence Tomography (OCT) technique for non-invasive scanning of the subsurface morphologies of jade objects. The two-dimensional tomography images show the refractive index or dielectric constant variations in the samples, reflecting their structures. Three samples of archaic jade objects from the Qijia and Liangzhu cultures in China are scanned in order to understand the subsurface morphologies of the naturally whitened jades. Also, two jade objects with artificial treatments (burning) are scanned and compared with the original materials in subsurface structures. In the original objects, the jade materials can generally be quite transparent, such that the backscattering intensity is weak, although the large-scale (tens of microns or larger) subsurface morphology can be clearly observed. After burning, small-scale (smaller than a few microns) structures are formed and the backscattering intensity is enhanced. In this situation, the large-scale structures may be preserved or even newly generated. On the other hand, in an archaic object with natural whitening, small-scale structures are also formed. Hence, the deeper distributions of significant backscattering intensity are observed, when compared with the unwhitened objects. Nevertheless, the large-scale features diminish during the whitening process. With OCT scanning, such differences in subsurface morphology can provide us a valuable reference for authenticating archaic jade objects. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2004 holdings: @attributes: islocal: N |
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