Polarized Raman spectroscopy reveals unaligned orientation in pearls | |
Gao, Jing1,4,5,6; Zhang, Jinli2; Wu, Wanghua3; Yen, Chien-Kuo7; Su, Wen4,5 | |
刊名 | JOURNAL OF RAMAN SPECTROSCOPY |
2023-01-06 | |
卷号 | 1页码:8 |
关键词 | aragonite biomineral crystallographic orientation depolarization ratio polarized Raman imaging |
ISSN号 | 0377-0486 |
DOI | 10.1002/jrs.6492 |
通讯作者 | Gao, Jing |
英文摘要 | Polarized Raman spectroscopy is a useful technique in studying orientation of molecular vibrations of crystals, which, however, has been applied insufficiently in crystallography, mineralogy, or geology. This present study is devoted to measure the transversal orientation of high-quality cultivated pearls using polarized Raman spectroscopy. The pearls were cultivated by Pinctada fucata in Japan, consisting of aragonite dominantly. On the pearl surface, the aragonite micro-crystals show irregularly hexagonal and pentagonal shapes, orienting their c axes towards the pearl surface. A number of aragonite micro-crystals makes up a lamina with a noncircular contour, and a batch of laminae stacks up with a decreasing area from bottom to top to form a target pattern. So there is an abundant of target patterns spreading over the pearl surface. Using a marker on the pearl surface as a reference, angular variation of aragonite is quantifiable by measuring mode intensities of aragonite and depolarization ratio. Polarized Raman images are collected on the pearl surface, which show spatial differences in orientation of aragonite micro-crystals on the mesoscopic scale. This transversal heterogeneity exists not only between different laminae but also between aragonite micro-crystals on the same lamina. We suggest that the development of the stress around the aragonite micro-grains lead to the angular variations of aragonite. The orientation of biominerals has been studied using transmission electron microscope (TEM) and electron back-scattered diffraction (EBSD). The present study indicates another sensitive technique of polarized Raman spectroscopy to evaluate molecular orientation in biominerals. |
资助项目 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; [41902035] ; [2018M640179] ; [2019T120132] |
WOS关键词 | CRYSTALLOGRAPHIC STRUCTURE ; CRYSTAL ORIENTATION ; SINGLE-CRYSTAL ; NACRE ; ORGANIZATION ; ARAGONITE ; BIVALVIA ; GROWTH |
WOS研究方向 | Spectroscopy |
语种 | 英语 |
出版者 | WILEY |
WOS记录号 | WOS:000908142600001 |
资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.idsse.ac.cn/handle/183446/10058] |
专题 | 深海科学研究部_地外海洋系统研究室 |
通讯作者 | Gao, Jing |
作者单位 | 1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Extraterr Ocean Syst, Sanya 572000, Peoples R China 2.Peking Univ, Gem Appraisal Ctr, Sch Earth & Space Sci, Beijing, Peoples R China 3.WITec Beijing Sci Technol Co Ltd, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Inst Earth Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Extraterr Ocean Syst, Sanya, Peoples R China 7.Nei Hu Community Coll, Taipei, Peoples R China |
推荐引用方式 GB/T 7714 | Gao, Jing,Zhang, Jinli,Wu, Wanghua,et al. Polarized Raman spectroscopy reveals unaligned orientation in pearls[J]. JOURNAL OF RAMAN SPECTROSCOPY,2023,1:8. |
APA | Gao, Jing,Zhang, Jinli,Wu, Wanghua,Yen, Chien-Kuo,&Su, Wen.(2023).Polarized Raman spectroscopy reveals unaligned orientation in pearls.JOURNAL OF RAMAN SPECTROSCOPY,1,8. |
MLA | Gao, Jing,et al."Polarized Raman spectroscopy reveals unaligned orientation in pearls".JOURNAL OF RAMAN SPECTROSCOPY 1(2023):8. |
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