Abstract: A combining assembly for a fan fixing base is fixed in a housing and includes a fan module and a frame plate. The fan module includes a fixing base, a heat-dissipating fan disposed in the fixing base, and a plurality of locking elements. The heat-dissipating fan is provided with a plurality of locking holes. The fixing base has a plurality of through-holes. The locking elements are disposed through the through-holes to be connected into the locking holes, thereby fixing the heat-dissipating fan into the fixing base. The frame plate is provided with a plurality of positioning troughs to correspond to the locking elements. The fan module is engaged in the positioning troughs via the locking elements.

Abstract: The present invention provides a biochip substrate used for immobilizing biomaterials, which has a matrix and at least one metal oxide thread-like nano-object formed vertically on a surface of the matrix. The metal oxide thread-like nano-object is employed for immobilizing the biomaterial onto the matrix of the chip substrate directly, without complicated immobilizing processes by using cross-linking agents or curing agents, and thereby simplifying the process of fabrication. Arrangement as such makes it suitable for purification of a biomaterial. On the other hand, the metal oxide thread-like nano-object characterized by having an enormous surface area is suitable for fabricating immunosensor chip and capable of maintaining high activity and reactivity of biomaterials, so as to increase speed and yield of reactions.