A sensor for detecting fingerprints is provided having first and second substrates, a two-dimensional array of sensing elements formed on the first substrate, and a plurality of thin-film transistors or TFTs for controlling the sensing elements at pixel locations along the array. The formation of undesirable by-products are suppressed and the desired triglycerides of high quality can be obtained constantly. A biochemical NMR method originally proposed by Percival and Withers is extended to the screening of SerThr kinases. Some embodiments of the remote sensing unit include a battery within its power supply. Then, the developer is spouted onto the rotating wafer to spread the developer on the surface of the wafer.