Effects of tensile stress on the resonant response of Al thin-film and Al-CNT nanolaminate nanomechanical beam resonators

► Realized Al and Al-CNT nanolaminate nanomechanical beam resonators. ► Optically measured resonant frequency and Q-factor of Al and Al-CNT beam resonators. ► Chip-bending method is utilized to apply a tensile stress along beam axis.► Al shows large reversible increase in resonant frequency and Q-factor increase. ► Al-CNT shows slight decreasing in resonant frequencies and Q-factor.