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Structural changes in cuticles on violin bow hair caused by wear
Tomoko Yamamoto1, Shigeru Sugiyama
1Nanobiotechnology Laboratory, National Food Research Institute, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan.
Bioscience, Biotechnology, and Biochemistry
|February 9, 2010
Summary
Atomic force microscopy revealed that violin bow hair cuticles are damaged by processing. Worn bow hairs show more severe damage and breakage from use, explaining their reduced performance.
Area of Science:
- Materials Science
- Tribology
- Musical Instrument Acoustics
Background:
- Violin bows utilize horse tail hair for sound production.
- The performance of a violin bow is influenced by the condition of its hair.
- Understanding bow hair wear is crucial for maintaining instrument quality.
Purpose of the Study:
- To investigate the microstructural changes in new and worn violin bow hair.
- To correlate observed damage with the functional wear of bow hair.
Main Methods:
- Atomic force microscopy (AFM) was employed to examine the surface topography of bow hairs.
- New and worn bow hairs were analyzed to compare their structural integrity.
Main Results:
- New bow hairs exhibited cuticle damage from processing treatments like bleaching and delipidation.
- Worn bow hairs displayed significantly more extensive damage, including broken cuticles and fractured surfaces.
- The observed structural degradation in worn hairs directly correlates with the physical forces experienced during playing.
Conclusions:
- Processing methods inherently damage violin bow hair cuticles.
- Mechanical stress during violin playing leads to cumulative and severe damage to bow hair.
- The findings provide a microscopic explanation for the wear and tear affecting violin bow performance.
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