| 主权项 |
1. A microchip comprising:
two substrates each having a main surface extending in a y-axis direction and an x-axis direction; a channel formed between the substrates; a sample inlet provided on at least one of the substrates, the sample inlet configured to permit a sample liquid to be introduced into the channel; and a sheath inlet provided on at least one of the substrates, the sheath inlet configured to permit a sheath liquid to be introduced into the channel, wherein the channel is configured to permit the sheath liquid and the sample liquid to flow therethrough in a positive x-axis direction such that a laminar flow of the sample liquid is surrounded by a laminar flow of the sheath liquid therein, the channel having first walls opposed to one another in a z-axis direction perpendicular to the main surfaces of the substrates, and the channel having second walls opposed to one another in the y-axis direction, wherein the channel includes a narrow-down section, the first walls and the second walls have inclined surfaces extending in the x-axis direction therein so that a cross sectional area of the channel perpendicular to the x-axis direction is reduced in the positive x-axis direction, and wherein the inclined surface of one of the first walls extends in a positive z-axis direction in the positive x-axis direction, and the inclined surface of the other of the first walls extends in a negative z-axis direction in the positive x-axis direction. |
