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SWAP Meeting 14 January 2004 - Fort Collins, CO
Solid-State NMR Investigation into the Violins of
Stradivari & Guarneri
Joseph DiVerdi Colorado State University
Fort Collins, Colorado
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Background & Goals:
• A Project of Opportunity • Approached by Joseph Nagyvary
– Emeritus of Texas A&M - Biochemistry & Biophysics • Violinist & Private Luthier
– Nagyvary Violins Company – Interested in Making Great Violins
• A Very Complicated Materials & Engineering Project • Desired to Learn About Materials & Materials Treatments Used by
Old Masters • Already Using Anecdotal Information & Modern Techniques
– Craftsmanship, Playing, & Audio Analysis • Already Making Good Violins
– Publicized Recital with Expert & Lay Audience • Could Not Identify Stradivarius and Nagyvarius in Blind Cross-Comparison
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The Maestro – Joseph Nagyvary
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Antonio Stradivari (1644-1737) Produced ~1100 Instruments, 400 Extant Giuseppe Guarneri (1698-1744)
The "Competition” - The Amati School
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Tough Problem:
• Geometric Design Considerations • Multi-Layered, Multi-Component Materials
– Agricultural in Origin • Raw Material Treatments • Post-Assembly Treatments • Less-Than-Tangible & Intangible Listening Qualities
• Design Informed by Analysis of Old Masterworks – Examination of Certain Critical Raw (?) Materials – Examination Using Non-Destructive Techniques – Wade Through the Misinformation
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Complex Raw Material
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The Sample – 117 mg of Stradavarius Wood
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Solid-State NMR Methodology
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Complex Raw Material
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Support from the Gary E. Maciel NMR Laboratory at CSU
David Lewis - Revolution NMR, LLC Joseph Nagyvary - The "Nagyvarius" Violin
Acknowledgements:
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Coincidence?
Giuseppe Verdi (1813-1901) Joseph DiVerdi (1953-)