Thirdly, an optimal contrast can be achieved by using red to near-infrared (NIR) excitation to minimize the dis- turbing autofluorescence of cells and tissues, making SERS an important tool for noninvasive imaging in living subjects11. This use of excitation wavelenghts, which are not resonant...
[28]. This change in resonance frequency can be monitored by quartz crystal microbalances (QCM) [12], acoustic Love wave (LW) resonators [29] or thin film bulk acoustic resonators (FBAR) [27]. These gravimetric sensors share a common trait of using silicon oxide based ceramics (silica, ...