21. For the vibrational modes , the opposite is true. 22. The vibrational mode in fluid particles can decay or become excited by emitting or absorbing photons. 23. Instead there is a hierarchy of vibrational modes which encompass smaller and smaller parts of the substrate. 24. A molecule can vibrate in many ways, and each way is called a " vibrational mode ." 25. Vibrational spectroscopy techniques, such as Raman spectroscopy, are going to be sensitive to these M-L vibrational modes . 26. Through this process, the initially excited vibrational mode moves to a vibrational state of a lower energy. 27. It is easy to calculate the expected number of vibrational degrees of freedom ( or vibrational modes ). 28. :A harmonic is a vibrational mode at a frequency which is an integer multiple of the natural frequency. 29. When the SFG system scans over a vibrational mode of the surface molecule, the output intensity is resonantly enhanced. 30. A SASER device transforms the electric potential energy in a single vibrational mode of the lattice ( phonon ).
