Before revision: Some possible vibrational modes of resonators; shown are longitudinal mode fixed at one end, torsional mode, torsional mode, flexural mode, radial expansion mode, and radially symmetric drumhead mode.
After revision: The modesSome possible vibrational modes of resonators; shown are longitudinal mode fixed at one end, torsional mode, torsional mode, flexural mode, radial expansion mode, and radially symmetric drumhead mode.