Microflows

Microflows is a term used in different technical domains to describe small-scale flows, either of software logic or of fluids. Depending on context, it can refer to visual representations of application logic in low-code platforms or to confined liquid movement in microfluidic devices.

In software engineering and low-code/no-code environments, microflows are visual, node-based representations of procedural logic that orchestrate actions and data. A microflow typically starts from a trigger, proceeds through a sequence of activities, decisions, and loops, and ends with a result. It may invoke services, create or update data objects, and navigate between user interfaces. Microflows support debugging, versioning, and reusability through modular sub-flows or reusable components. They are intended to accelerate development and simplify maintenance, especially for business processes, but can become complex if not well documented.

In microfluidics, microflows describe the movement of liquids through microchannels at micron scales. Flows are generally laminar, with Reynolds numbers well below 1, making advection predictable and diffusion significant. Control methods include pressure-driven pumps, syringe pumps, pneumatic valves, and electrokinetic actuation. Microflow systems underpin lab-on-a-chip devices, including diagnostic assays, chemical synthesis, and single-cell analysis. Design challenges include precise flow control, mixing at small scales, and integration with sensors and readouts.

The term's exact meaning depends on field and source; when used, specification of context is advised to avoid confusion.