DNA TRAP/RELEASE APPARATUS USING CHANNEL AND METHOD OF TRAPPING AND RELEASING DNA

摘要

A liquid containing DNAs is passed through a channel having large width part and small width part by a pressure difference, and simultaneously an electric field is applied in the direction such that DNAs flow in the direction opposite to the pressure difference flow. This enables selectively trapping DNAs in the vicinity of small width part. Flowing DNAs can be trapped in sequence by regulating the level of electric field and pressure, thereby realizing the recovery and concentration of DNAs. Trapped DNAs are discharged at a stretch toward an inlet or outlet by increasing or decreasing the level of either electric field or pressure. This enables easy release and recovery so as to attain use in the subsequent processing.