Abstract: Provided is a channel device that is capable of increasing the concentration of fine particles in a liquid only by use of fluid-dynamic flows without relying on electrostatic interactions. A channel device (1) in accordance with an embodiment of the present invention includes: a main channel (11) configured to allow a liquid containing fine particles to flow therethrough; a chamber (15) that is provided at an end of the main channel (11) and that is configured to store target fine particles which have increased in concentration; and a side channel (12) that is connected to a side face of the main channel (11) and that is configured to allow unwanted liquid to drain therethrough, wherein at least one of a height and a width of the side channel (12) is smaller than a particle size of the fine particles.

Abstract: It is an object to improve detection accuracy of an object as compared with prior arts. A flow passage (10) provided in a detection device (10) includes a substrate (1) and a covering member (2) provided at a position corresponding to the substrate (1). A covering member opening (HL2) of the covering member (2) is provided such that a substrate opening (HL1) of the substrate (1) is not covered with the covering member (2). The covering member (2) is arranged onto the substrate (1) such that a substrate capacitance and a covering member capacitance are connected in series. The covering member capacitance is lower than the substrate capacitance.

Abstract: A flow path device comprises a flow path 50 that includes a plurality of inlet portion side first flow paths 61 connected to an inlet portion 30; a plurality of inlet portion side second flow paths 62 connected to the plurality of respective inlet portion side first flow paths 61; and a plurality of reaction chamber portions 63 connected to the plurality of respective inlet portion side second flow paths 62, wherein the plurality of inlet portion side first flow paths 61 are configured such that when a positive pressure is applied to a liquid in the plurality of inlet portion side first flow paths 61, the amounts of the liquid flowing out from the plurality of inlet portion side first flow paths 61 to the respective reaction chamber portions 63 are substantially the same, wherein plurality of inlet portion side second flow paths 62 are configured such that when the magnitude of the positive pressure applied to the liquid in the plurality of inlet portion side first flow paths 61 is less than a threshold value

Abstract: A flow path device 20 is a biological component test flow path device for storing a specimen used to test a biological component in a specimen separated from a living body and includes: a main body portion 30; at least one or more flow paths 40 which are provided inside the main body portion 30 so that at least one or more inlet open ends 41 and at least one or more outlet open ends 42 in a plurality of different open ends of the at least one or more flow paths 40 overlap each other or are adjacent to each other and are exposed to the outside of the main body portion 30; and a lid portion 50 which opens and closes at least one or more inlet open ends 41 and at least one or more outlet open ends 42 together.

Abstract: It is an object to improve detection accuracy of an object as compared with prior arts. A flow passage (10) provided in a detection device (10) includes a substrate (1) and a covering member (2) provided at a position corresponding to the substrate (1). A covering member opening (HL2) of the covering member (2) is provided such that a substrate opening (HL1) of the substrate (1) is not covered with the covering member (2). The covering member (2) is arranged onto the substrate (1) such that a substrate capacitance and a covering member capacitance are connected in series. The covering member capacitance is lower than the substrate capacitance.

Abstract: Provided is a channel device that is capable of increasing the concentration of fine particles in a liquid only by use of fluid-dynamic flows without relying on electrostatic interactions. A channel device (1) in accordance with an embodiment of the present invention includes: a main channel (11) configured to allow a liquid containing fine particles to flow therethrough; a chamber (15) that is provided at an end of the main channel (11) and that is configured to store target fine particles which have increased in concentration; and a side channel (12) that is connected to a side face of the main channel (11) and that is configured to allow unwanted liquid to drain therethrough, wherein at least one of a height and a width of the side channel (12) is smaller than a particle size of the fine particles.