Fluidic apparatus and methods useful for chemical and biological reactions
Provided herein is a valve manifold comprising (a) an elastomer sheet attached to a plurality of magnetic pistons, wherein the magnetic pistons project from a first side of the elastomer sheet; (b) a foot component comprising a first surface and a plurality of shafts that orthogonally pass through the first surface; and (c) a body component comprising a second surface, a groove that laterally passes along the second surface, and a plurality of reservoir channels that orthogonally pass through the second surface, wherein the elastomer sheet is compressed between the foot component and the body component.
1. A valve manifold comprising
(a) an elastomer sheet attached to a plurality of magnetic pistons, wherein the magnetic pistons project from a first side of the elastomer sheet;
(b) a foot component comprising a first surface and a plurality of shafts that orthogonally pass through the first surface; and
(c) a body component comprising a second surface, a groove that laterally passes along the second surface, and a plurality of reservoir channels that orthogonally pass through the second surface,
wherein the elastomer sheet is compressed between the foot component and the body component,
wherein the first side of the elastomer sheet contacts the first surface and the magnetic pistons protrude from the first side of the elastomer sheet into the shafts of the foot component,
wherein a second side of the elastomer sheet contacts the second surface to form normally closed valves that seal the plurality of reservoir channels from fluidically communicating with the groove, and
wherein the normally closed valves are actuated by movement of the magnetic pistons through the shafts away from the first surface, thereby pulling the second side of the elastomer sheet away from the reservoir channels to fluidically connect the groove and the reservoir channels in the body component.
2. The valve manifold of claim 1 , further comprising a plurality of actuators configured to open the normally closed valves by magnetically attracting the magnetic pistons through the shafts and away from the first surface.
3. The valve manifold of claim 1 , wherein the magnetic pistons are attached to the elastomer sheet by protrusions that are inserted into an interior of the elastomer sheet.
4. The valve manifold of claim 3 , wherein the interior, first side and second side of the elastomer sheet consist essentially of the same material.
5. The valve manifold of claim 3 , wherein the magnetic pistons are insert-molded into the elastomer sheet.
6. The valve manifold of claim 1 , wherein the magnetic pistons are adhered to the second side of the elastomer sheet.
7. The valve manifold of claim 1 , further comprising a master valve that regulates fluid flow through the groove, the master valve comprising a node on the second side of the elastomer sheet that fills an aperture in the groove to prevent flow of fluid through the groove.
8. The valve manifold of claim 7 , wherein the master valve is actuated by movement of a magnetic piston through a shaft in the foot component away from the first surface, thereby allowing flow of fluid through the groove by pulling away the node that fills the aperture.
9. The valve manifold of claim 1 , further comprising a pressure source connected to the groove.
10. The valve manifold of claim 9 , wherein the groove comprises, in relative order, a first master valve, the connection of the pressure source to the groove and a second master valve.
11. The valve manifold of claim 10 , wherein the master valves each comprise a node on the second side of the elastomer sheet that fills an aperture in the groove to prevent flow of fluid through the groove.
12. The valve manifold of claim 9 , wherein the pressure source comprises a syringe pump.
13. The valve manifold of claim 1 , wherein the body component further comprises a plurality of reservoirs, the reservoirs in fluid communication with the groove via the reservoir channels and via the valves.