SUBSTRATE HAVING CHANNEL PORTION INCLUDING CHAMBERS, AND METHOD OF TRANSFERRING LIQUID BY USING THE SUBSTRATE
First Claim
1. A substrate that is rotatable about a rotating axis and that has a flow path part including a chamber formed inside the substrate, wherein:
- an interior wall of the chamber comprises;
a first inner face that has a plane intersecting with a centrifugal direction from the rotating axis; and
a second inner face that has a plane which is placed in a location farther from the rotating axis than the first inner face and which is intersecting with the centrifugal direction from the rotating axis;
the first inner face has an area on which a droplet of liquid supplied is retained, and has an area that allows expansion of a contact area of the retained droplet by rotation of the substrate and communicates with the second inner face.
6 Assignments
0 Petitions
Accused Products
Abstract
A substrate having a channel portion in which a liquid transfers, wherein, even if the channel portion has no micro-channel interconnecting chambers, a liquid can transfer stepwise from one region to the next region according to the speed of rotation of the substrate. The substrate can be rotated about a rotation axis as the center, and has the channel portion including the chambers formed therein. The inner wall of each chamber has a first area including an area intersecting with a centrifugal direction from the center; and also has a second area placed at a position farther from the center than the first area, and including a surface intersecting with the centrifugal direction from the center. Further, the first area has a region for holding a droplet of a liquid provided; and also has a region where a contact with the droplet expands when the substrate is rotated, and that communicate with the second area.
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Citations
9 Claims
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1. A substrate that is rotatable about a rotating axis and that has a flow path part including a chamber formed inside the substrate, wherein:
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an interior wall of the chamber comprises; a first inner face that has a plane intersecting with a centrifugal direction from the rotating axis; and a second inner face that has a plane which is placed in a location farther from the rotating axis than the first inner face and which is intersecting with the centrifugal direction from the rotating axis; the first inner face has an area on which a droplet of liquid supplied is retained, and has an area that allows expansion of a contact area of the retained droplet by rotation of the substrate and communicates with the second inner face. - View Dependent Claims (2, 3, 5, 7, 8, 9)
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4. A substrate that is rotatable about a rotating axis and that has a flow path part formed inside the substrate, wherein:
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the flow path part comprises; a first chamber; a second chamber that is placed in a location farther from the rotating axis than the first chamber; and a connecting part that connects the first chamber and the second chamber; the first chamber is spatially closed except for an injection inlet; an interior wall of the second chamber comprises; a first inner face that has a plane intersecting with a centrifugal direction from the rotating axis; and a second inner face that has a plane which is placed in a location farther from the rotating axis than the first inner face and which is intersecting with the centrifugal direction from the rotating axis; the first inner face has an area on which a droplet of liquid supplied is retained, and has an area that allows expansion of a contact area of the retained droplet by rotation of the substrate and that communicates with the second inner face. - View Dependent Claims (6)
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Specification