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← ScienceWhich outcome occurs when excessive torsional stress fractures carbon nanotubes?
A)Increased electrical conductivity occurs rapidly
B)Raman spectra modes shift irreversibly✓
C)Metallic character becomes semi-conducting
D)Thermal transport properties become uniform
💡 Explanation
Increased torsional stress exceeding the material’s limit causes irreversible Raman spectra shifts, because covalent bonds break due to exceeding the potential energy minimum via Torsional strain; therefore spectral modes shift rather than electrical or thermal because nanotube arrangement is altered.
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