https://scholars.lib.ntu.edu.tw/handle/123456789/606869
標題: | Materials Engineering of Violin Soundboards by Stradivari and Guarneri | 作者: | Su C.-K Chen S.-Y Chung J.-H Li G.-C Brandmair B Huthwelker T Fulton J.L Borca C.N Huang S.-J Nagyvary J Tseng H.-H Chang C.-H Chung D.-T Vescovi R Tsai Y.-S Cai W Lu B.-J Xu J.-W Hsu C.-S Wu J.-J Li H.-Z Jheng Y.-K Lo S.-F Chen H.M Hsieh Y.-T Chung P.-W Chen C.-S Sun Y.-C Chan J.C.C CHUN-CHUNG CHAN HAO MING CHEN HWAN-CHING TAI |
關鍵字: | cultural heritage;ICP-MS;IR spectroscopy;NMR spectroscopy;X-ray absorption spectroscopy;Acoustic properties;Alkalinity;Calcium oxide;Cellulose;Crosslinking;Lime;Moisture control;Nonlinear optics;Potash;Sodium borate;Sodium chloride;Sulfur compounds;Alkaline treatment;Aluminum coordination;Analytical data;Chemical techniques;Elemental compositions;Historical information;Materials engineering;Potential function;Wood preservation;Acoustic Properties;Calcium Oxide;Moisture Control | 公開日期: | 2021 | 卷: | 60 | 期: | 35 | 起(迄)頁: | 19144-19154 | 來源出版物: | Angewandte Chemie - International Edition | 摘要: | We investigated the material properties of Cremonese soundboards using a wide range of spectroscopic, microscopic, and chemical techniques. We found similar types of spruce in Cremonese soundboards as in modern instruments, but Cremonese spruces exhibit unnatural elemental compositions and oxidation patterns that suggest artificial manipulation. Combining analytical data and historical information, we may deduce the minerals being added and their potential functions—borax and metal sulfates for fungal suppression, table salt for moisture control, alum for molecular crosslinking, and potash or quicklime for alkaline treatment. The overall purpose may have been wood preservation or acoustic tuning. Hemicellulose fragmentation and altered cellulose nanostructures are observed in heavily treated Stradivari specimens, which show diminished second-harmonic generation signals. Guarneri's practice of crosslinking wood fibers via aluminum coordination may also affect mechanical and acoustic properties. Our data suggest that old masters undertook materials engineering experiments to produce soundboards with unique properties. ? 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112675048&doi=10.1002%2fanie.202105252&partnerID=40&md5=f3759ef1207ecb56c3479cdc6d810f7e https://scholars.lib.ntu.edu.tw/handle/123456789/606869 |
ISSN: | 14337851 | DOI: | 10.1002/anie.202105252 |
顯示於: | 化學系 |
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