Introduction to Microflows

Droplet Combinations: A Scalable Microfluidic Platform for Biochemical Assays

“…where ρ is the density of the fluid, h is the height of the head pressure, γ is the interfacial tension between fluids, and R is the radius of curvature. 26 When there is no shuttle under a well, the system is in a static fluid condition where the head pressure is equal to the surface tension forces within the system. When this occurs, the fluid is held stationary within the well.…”

Single-Phase Gas Flow in Microchannels

“…In microfluidics, theoretical knowledge of gas flows is currently more advanced than that for liquid flows (Colin, 2010). Concerning gases, the issues are actually more clearly identified: the main micro-effect that results from shrinking the size of devices is rarefaction.…”

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“…1,2 It is an interdisciplinary field dealing with extremely minute volumes of fluids, their control and behaviour, and their designing. [2][3][4][5] LOC scales down and enables integration of miniaturized laboratory functions onto a microprocessor chip using nanolitres to picolitres of fluid volume [2][3][4]6 by combining a miniaturized sensing system (usually optical or electrochemical sensors) 2 , fabrication techniques used by semiconductor industries and control concepts of fluid flow from microfluidics 4,7,8 (like channels, pumps, mixers and valves). discovery-microfluidics which too was established in the 1990s.…”