Biochip and manufacturing method therefor

Abstract

A chip and a manufacturing method for the chip, comprising a weak passivation treatment following a fixing treatment. The weak passivation treatment comprises putting a weak passivation reaction solution containing a catalyst into contact with a chip for the fixing treatment, so as to promote a DNA or protein to bond with a substrate surface, thus allowing the DNA or protein to be fully fixed on the substrate surface. Moreover, on such basis, a small molecule or protein is added for manufacturing the chip. The utilization of the manufacturing method, with the step of weak passivation treatment added after the fixing treatment, allows the DNA or protein to be fully fixed on the substrate surface, not only increases the quality and efficiency of the fixing of the DNA or protein, but also reduces nucleotide and protein non-specific adsorption, thus allowing the volume of the DNA or protein being fixed to be highly controllable and to have good repeatability; moreover, when the chip is utilized for sequencing, the interference of a non-specific signal is reduced, thus laying the foundation for manufacturing a high-quality available DNA or protein chip.