1. A device for recording dynamic changes, such as mass or viscosity, comprising: a disposable cartridge having at least one microelectromechanical sensor, at least one light source connected to at least one microelectromechanical sensor, at least at least one photodetector connected to at least one microelectromechanical sensor and a light source, and control electronics connected to at least one activation means, at least one means Activation can be connected releasably to at least one MEMS sensor and wherein the control electronics and user interface can be connected releasably to at least one fotodetektoru.2. The device according to claim 1, wherein the at least one light source is a single laser source and the at least one photodetector is a single photodetector. The device according to claim 1, wherein the at least one microelectromechanical sensor comprises at least one vibrating structure for recording and interference means associated with each vibrating mechanical structure. The device of claim 1, wherein the at least one microelectromechanical sensor comprises at least one vibrating structure for recording and interference means associated with at least one vibrating mechanical structure and a substrate having a through hole for each mechanical structure so that the light source can pass through the substrate to the mechanical
展开▼