Flow channel device, particle sorting apparatus, and particle sorting method
AssigneeSony Corporation
InventorYoichi Katsumoto
Life of this patent
Estimating the term…
Abstract
A flow channel device includes a flow channel in which a fluid containing a particle flows, a plurality of branch channels branched from the flow channel, and an electrode unit. The electrode unit includes a first electrode having a first area and a second electrode having a second area different from the first area, and is configured to form a guide electrical field in the flow channel, which guides the particle to a predetermined branch channel out of the plurality of branch channels. The second electrode is opposed to the first electrode so that the flow channel is sandwiched between the first electrode and the second electrode.
Claims18
A flow channel device, comprising:
- a flow channel in which a fluid containing a particle flows;
- a plurality of branch channels branched from the flow channel;
- and
- an electrode unit including a first electrode having a first area and a second electrode having a second area different from the first area, and configured to form a guide electrical field in the flow channel, which guides the particle to a predetermined branch channel out of the plurality of branch channels, the second electrode being opposed to the first electrode so that the flow channel is sandwiched between the first electrode and the second electrode.
A particle sorting apparatus, comprising:
- a flow channel device including
- a flow channel in which a fluid containing a particle flows,
- a plurality of branch channels branched from the flow channel,
- a measurement electrode unit provided on a first position of the flow channel, and
- a sorting electrode unit that includes a first electrode having a first area and a second electrode having a second area different from the first area, is provided on a second position on a downstream side from the first position of the flow channel, and is configured to form a guide electrical field in the flow channel, which guides the particle to a predetermined branch channel out of the plurality of branch channels, the second electrode being opposed to the first electrode so that the flow channel is sandwiched between the first electrode and the second electrode;
- a measurement unit configured to measure an impedance that depends on the particle by applying an AC voltage to the measurement electrode unit;
- and
- a signal generation unit configured to generate a sorting signal that gives an instruction to sort the particle by the guide electrical field on the basis of the impedance measured and apply the sorting signal to the sorting electrode unit.
A particle sorting method, comprising:
- flowing a fluid containing a particle in a flow channel;
- measuring an impedance that depends on the particle by applying an AC voltage to a measurement electrode unit provided on a first position of the flow channel;
- generating a sorting signal that gives an instruction to sort the particle on the basis of the impedance measured;
- and
- forming, in the flow channel, a guide electrical field that guides the particle to a predetermined branch channel out of a plurality of branch channels branched from the flow channel by applying the sorting signal generated to a sorting electrode unit including a first electrode having a first area and a second electrode having a second area different from the first area and provided on a second position on a downstream side from the first position of the flow channel, the second electrode being opposed to the first electrode so that the flow channel is sandwiched between the first electrode and the second electrode.
Dependencies are inferred from the claim text.