  Asymmetric-double-bars (ADB) structure is one of the most interesting
plasmonic metamaterials that has been broadly investigated. Here we propose to
manufacture ADB on top of elastic material, to get direct control to the
dimension of ADB elements. To analyze the spectra numerically, simulation by
commercial software (COMSOL) are carried out. We successfully modify the
characteristic spectra and enhance Q-factor of the peak near infrared by
introducing angular and amplitude parameters of the stretching of substrate in
the simulation. At the mean time, we significantly restrain red shift in the
absorption spectra by applying flipped-configuration and substrate etching
configuration to ADB structure. Intriguing quadratic functions between
stretching ratio and the absorption peak wavelength are obtained when
stretching in x and y direction. For other directions, EIT lineshape appears in
transmission spectra. These results might contribute to future application of
plasmonic metamaterial in laser controlling and sensors.
