Solid-State NMR Investigation into the Violins of ... · SWAP Meeting 14 January 2004 - Fort...

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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

Transcript of Solid-State NMR Investigation into the Violins of ... · SWAP Meeting 14 January 2004 - Fort...

Page 1: Solid-State NMR Investigation into the Violins of ... · SWAP Meeting 14 January 2004 - Fort Collins, CO Solid-State NMR Investigation into the Violins of Stradivari & Guarneri Joseph

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-)