Abstract: A device for amplifying a target nucleic acid in a sample containing one or more target nucleic acids may include a substrate assembly comprising a flow channel and an inlet, wherein the inlet is in flow communication with the flow channel and is configured to introduce sample containing one or more target nucleic acids into the flow channel. The device may further include a plurality of moieties disposed at inner surface regions of the flow channel along at least a portion of a length of the flow channel, each of the plurality of moieties being sufficient to respectively hybridize to the one or more target nucleic acids in the sample to facilitate amplification of the one or more target nucleic acids when hybridized. The device is further configured to retain amplified product of the one or more hybridized target nucleic acids at discrete locations proximate the inner surface regions after amplification.