Piezoelectric protein sensing chip is constructed with immobilizing HBsAg probes onto the silver electrodes of quartz-crystal microbalance

which is modified with Glu cross-linked method to detect HBsAg.By random sampling inspection

data statistics

interactive experiment and quality examination

quality control of washing

immobilizing

seal and detection steps

the stability

qualified and accurate percentage of sensing chip are developed.Quality control of preparation technique is the key to develop technique performance of the piezoelectric protein sensing chip.