The present invention provides a method for preparing 18F\u2014N-ethacrynic amide which is prepared from radiofluorination and deprotection of the precursor tosylate N-Boc-N-4–butyl)ethacrynic amide, obtained from ethacrynic acid via 6-step synthesis in 39% yield, in a radiochemical yield of 44%, aspecific activity of 48 GBq\u03bcmol and radiochemical purity of 98%. The system also includes a speedometer for determining a speed of the vehicle and an alarm. Undesirable response characteristics of the playing surface and sensor circuit may be filtered out by deconvolving sensor output, or the stored waveform representing the acoustic instrument, with the impulse response of the combination of the playing surface and the sensor circuit. This configuration allows each segment pair to move independently of one another and also permits the articulating mechanism to undergo complex movements and adopt complex configurations. The semiconductor device comprises a structure, the structure comprises a substrate, a first layer comprising GaN and a second layer comprising InAlN, wherein the first and the second layer are arranged parallely to each other on the substrate, and wherein the structure comprises a third layer comprising diamond.