Fluidic assembly using tunable suspension flow

1. A method for fluidic assembly, the method comprising:

providing a fluidic flow chamber including side walls forming a barrier around a top surface of a substrate, and wherein the top surface of the substrate includes a plurality of wells;

introducing a suspension into the fluidic flow chamber, wherein the suspension is in contact with the top surface of the substrate, and wherein the suspension includes: a plurality of micro-components and a carrier fluid;

commanding a flow oscillator to force movement of the suspension within the fluidic flow chamber controllably in at least a first direction and a second direction wherein the flow oscillator is a pump;

capturing an image of a location of micro-components relative to the plurality of wells;

based at least in part on the image, selecting both a magnitude of fluid flow and one of the first direction or the second direction as a tunable fluidic flow; and

commanding the flow oscillator to force movement of the suspension within the fluidic flow chamber in accordance with the tunable fluidic flow.

2. The method of claim 1 , wherein the pump configured to provide a range of tunable fluidic flow.

3. The method of claim 2 , wherein the first direction is away from the pump and the second direction is toward the pump.

4. The method of claim 1 , wherein the micro-components are light emitting diodes.

5. The method of claim 1 , wherein the substrate further includes one or more control channels along a top surface of the substrate.

6. The method of claim 5 , wherein the control channels are substantially parallel to the first direction and the second direction.

7. The method of claim 5 , wherein the control channels are substantially perpendicular to the first direction and the second direction.

8. A method for fluidic assembly, the method comprising:

providing a fluidic flow chamber including a plurality of side walls surrounding a top surface of a substrate, and wherein the substrate includes a plurality of wells extending into to the substrate;

introducing a suspension into the fluidic flow chamber, wherein the plurality of walls maintain at least a portion of the suspension within the fluidic flow chamber and in contact with at least the top surface of the substrate, and wherein the suspension includes: a plurality of micro-components and a carrier fluid;

commanding a mechanical forcing system to force movement of the suspension within the fluidic flow chamber alternately in a first direction and a second direction, wherein the mechanical forcing system is a pump;

capturing an image of a location of micro-components relative to the plurality of wells;

based at least in part on the image, selecting both a magnitude of fluid flow and one of the first direction or the second direction as a tunable fluidic flow; and

commanding the mechanical forcing system to force movement of the suspension within the fluidic flow chamber in accordance with the tunable fluidic flow.

9. The method of claim 8 , wherein the pump is configured to provide a range of tunable fluidic flow, and wherein the first direction is away from the pump and the second direction is toward the pump.

10. The method of claim 9 , wherein the first direction is away from the pump and the second direction is toward the pump.

11. The method of claim 8 , wherein the micro-components are light emitting diodes.

12. The method of claim 8 , wherein the substrate further includes one or more control channels along a top surface of the substrate.

13. The method of claim 12 , wherein the control channels are substantially parallel to the first direction and the second direction.

14. The method of claim 12 , wherein the control channels are substantially perpendicular to the first direction and the second direction.

15. A method for fluidic assembly, the method comprising:

commanding a mechanical forcing system to force movement of a suspension within a fluidic flow chamber in a first direction, wherein the mechanical forcing system is a mechanical device interacting with a movement fluid to cause movement of the suspension relative to the surface of the substrate, and wherein the suspension includes: a plurality of micro-components and a carrier fluid; and wherein the flow chamber includes:

a plurality of side walls surrounding a top surface of a substrate and holding a pool of the suspension over and in contact with the top surface of the substrate, wherein at least the top surface of the substrate includes a plurality of wells extending into to the substrate;

commanding the mechanical forcing system to force movement of the suspension within the fluidic flow chamber in a second direction;

capturing an image of a location of micro-components relative to the plurality of wells;

based at least in part on the image, selecting one of the first direction or the second direction as a tunable fluidic flow; and

commanding the mechanical forcing system to force movement of the suspension within the fluidic flow chamber in accordance with the tunable fluidic flow.

16. The method of claim 15 , wherein the movement fluid is a subset of the carrier fluid.

17. The method of claim 15 , wherein the movement fluid includes a subset of the micro-components.

18. The method of claim 15 , wherein the mechanical device interacting with a movement fluid to cause movement of the suspension relative to the surface of the substrate is a pump configured to provide a range of tunable fluidic flow.

19. The method of claim 18 , wherein the first direction is away from the pump and the second direction is toward the pump.