Great advances have been achieved in CPL setups, most related to the porous structures in the capillary evaporator. Different materials have been applied as porous wicks, including sintered nickel, stainless steel, titanium, and polyethylene, with ultrahigh molecular weight.6–8 As the generation of capillary forces depends on the surface tension of the working fluid and size of the wick pore, CPLs have been investigated by using methanol, acetone, and anhydrous ammonia as working fluids. Various experiments using sintered nickel components with fine pore sizes have been performed.9,10 Small pore sizes have been produced in the manufacturing of wick structures from sintered metal components.9 Microcapillary pumped loop systems (MCPLs) have recently undergone extensive investigation because of their importance to heat transfer. Many potential configurations and numerous challenges related to transitioning MEMS technologies have been examined to develop a microcooler. It is well known that under suitable laminar flow condition, flow pass bluff bodies give rise to hydrodynamic instabilities.11 These flow-driven instabilities generate periodic wake behind the bluff that lead to the formation of the von Karman vortex street. Such microscale posts have recently been implemented experimentally for enhanced chemical reactivity12,13 and for flow uniformity.14 However, the initial filling of an MCPL cannot be easily controlled and results are very difficult to repeat. In addition, the phenomenon of Newton’s ring often occurs in the thermal bonding process and even causes the device to crack, but these issues are rarely noted, even though it significantly affects experiment results. In this study, a useful method of micromatrix post will be applied to deal with the aforementioned issues.