摘要:
A channel (103) is formed in a substrate (101), and a portion of the channel (103) is provided with a separating portion (107). A number of pillars are formed in the separating portion (107), and an adsorptive substance layer having an adsorptive substance, which exhibits a specific interaction for a specific substance, immobilized on the surface thereof, is formed. Once a sample is introduced into the channel (103), the specific substance is adsorbed on the adsorptive substance layer to be separated from other components. After washing the inside of the channel (103) with a buffer solution, the specific substance is desorbed from the adsorptive substance layer by flowing a eluting solution through the channel (103) and the specific substance is recovered.
摘要:
A particular component in a sample is recovered in a high concentration and solvent-replaced. A separator 100 is placed on a microchip and includes a channel 112 for flowing the particular component. The channel 112 includes a sample feeding channel 300 as well as a filtrate discharge channel 302 and a sample recovering part 308 which are branched from the sample feeding channel 300. There is formed a filter 304 for preventing passage of the particular component, at the inlet of the filtrate discharge channel 302 from the sample feeding channel 300. Furthermore, there is formed a damming area (hydrophobic area) 306 for preventing entering of a liquid sample while allowing for passage of the liquid sample by applying an external force equal to or larger than a given level, at the inlet of the sample recovering part 308 from the sample feeding channel 300.
摘要:
A sample reservoir (205) in which a sample (213) is introduced is sealed by a septum (207). On piercing the septum (207) by an injection needle, the sample reservoir (205) is communicated with the outer atmosphere, and then the sample (213) is delivered from the channel 203 to the water absorbing portion (209).
摘要:
A liquid sample (104) introduced in a main flow passage (101) is held in a dam portion (105), and a trigger liquid (106) is filled in a trigger flow passage (102). In this state, the trigger liquid (106) is further introduced at desired timing into the trigger flow passage (102) so that the front end portion of the level of the trigger liquid (106) is advanced and the front end portion is brought to be into contact with the dam portion (105). This causes the liquid sample (104) to move to the right (downstream side) in the figure, resulting in the liquid sample (104) flowing out to the downstream side of the main flow passage (101). This means that the trigger liquid (106) provides priming to realize a liquid switch.
摘要:
Individual components are separated with a high concentration and accurately, from a sample containing components-to-be-separated. The separation apparatus includes a channel through which a sample containing components-to-be-separated moves; and gateway portions partitioning the separation channel into a plurality of compartments. The separation apparatus further includes an external force imposing unit, which imposes external force to the components-to-be-separated so as to allow them to move through the channel. The external force imposing unit is configured so as to alternately repeatedly execute a first external force imposing pattern by which the external force is imposed in the forward direction of the channel, and a second external force imposing pattern by which the external force is imposed in the direction opposite to the forward direction along the channel. This makes it possible to fractionate the components-to-be-separated into any of the compartments.
摘要:
A liquid sample (104) introduced in a main flow passage (101) is held in a dam portion (105), and a trigger liquid (106) is filled in a trigger flow passage (102). In this state, the trigger liquid (106) is further introduced at desired timing into the trigger flow passage (102) so that the front end portion of the level of the trigger liquid (106) is advanced and the front end portion is brought to be into contact with the dam portion (105). This causes the liquid sample (104) to move to the right (downstream side) in the figure, resulting in the liquid sample (104) flowing out to the downstream side of the main flow passage (101). This means that the trigger liquid (106) provides priming to realize a liquid switch.
摘要:
A channel (103) is formed in a substrate (101) and a drying area (107) comprising a plurality of pillars (105) is formed in one end of the channel (103). A cover (109) is formed over the channel (103), except the area above the drying area (107). When a sample is introduced into the channel (103), it is guided to the drying area (107) by capillary phenomenon. The drying area (107) is heated by a heater (111) to evaporate the solvent for concentrating and drying the solute.
摘要:
For heating or cooling a sample contained in a vessel portion through a heat transfer member held in contact with the vessel portion, there is used the vessel portion, which has a part formed of an elastic member, expands and contracts for injection and discharge of the sample, is closed other than a connecting port with a channel connected to the vessel, and expands and contracts for injection and discharge of the sample. The vessel portion expands correspondingly to the injection when the sample is injected through an inflow path serving as the channel into the vessel portion contracting in a non-contacting state with the heat transfer member. A predetermined amount of sample is injected into the vessel portion so as to expand the vessel portion, and the vessel portion comes into contact with the heat transfer member. The vessel portion is heated or cooled through the heat transfer member.
摘要:
A channel control mechanism for a microchip has a laminated structure formed of members including elastic members, and includes: a sample reservoir for packing a sample therein; a reaction reservoir in which mixture and reaction of the sample are performed; and a channel formed in a middle layer of the laminated structure, for bringing the sample reservoir and the reaction reservoir into communication with each other. The channel control mechanism performs the reaction and analysis in such a manner that the sample is delivered into the reaction reservoir through the channel. A shutter channel (pressurizing channel) is provided in a layer different from a layer in which the channel is formed so that the pressurizing channel partially overlaps the channel. The channel is closed through applying a pressurized medium to the shutter channel (pressurizing channel), and the channel is opened through releasing a pressure of the pressurized medium.
摘要:
An individual identification method for identifying an individual by analyzing a DNA sample through electrophoresis, comprises: a first analysis step of analyzing an identifier-attached DNA sample which is given an identifier for an individual; a step of storing a result obtained by analyzing the identifier-attached DNA sample together with a corresponding identifier in a database; a second analysis step of analyzing a new sample which is a DNA sample subjected to individual identification with an accuracy lower than the accuracy when the identifier-attached DNA sample is analyzed, and using the result as a new sample analysis result; and a step of searching the database based on the new sample analysis result.