Abstract With the rapid development of microelectronic devices, efficient thermal management in narrow spaces faces significant challenges. Two-phase heat transfer technology is proposed as a breakthrough in this field; however, big challenges, especially in designing a high-performance wick within limited space, are urgent to be addressed before ultrathin two-phase heat transfer devices (TPHTDs) can be further applied. In this study, a multilayer composite micromesh wick (MCMW), comprised of coarse and fine meshes with different layer combinations, is proposed to enhance the wicking capability, which is promising to further enhance the thermal performance of ultrathin TPHTDs. Capillary rise rate experiments are conducted to evaluate the comprehensive wicking capability. The results show that MCMW structures yield a significant wicking capability enhancement when compared with multilayer single mesh wick (MSMW) structures. The MCMW, consisted of 3 layers of 100-mesh and 3 layers of 300-mesh, exhibits an optimum volumetric flow rate of 14.44 mm3/s and an equilibrated wicking height at 55.98 mm. MCMW structure provides a convenient and effective alternative in enhancing the wicking capability of mesh wicks and the thermal performance of ultrathin TPHTDs.

中文翻译：

---

用于超薄两相传热装置的多层复合微网芯芯的芯吸能力评估

摘要 随着微电子器件的快速发展，狭窄空间内的高效热管理面临着重大挑战。提出了两相传热技术作为该领域的突破；然而，在进一步应用超薄两相传热装置（TPHTD）之前，迫切需要解决巨大的挑战，特别是在有限空间内设计高性能灯芯。在这项研究中，提出了一种由具有不同层组合的粗细网眼组成的多层复合微网芯（MCMW）来增强芯吸能力，这有望进一步提高超薄 TPHTD 的热性能。进行毛细管上升率实验以评估综合芯吸能力。结果表明，与多层单网眼芯 (MSMW) 结构相比，MCMW 结构产生了显着的芯吸能力增强。MCMW 由 3 层 100 目和 3 层 300 目组成，最佳体积流速为 14.44 mm3/s，平衡芯吸高度为 55.98 mm。MCMW 结构为增强网状芯的芯吸能力和超薄 TPHTD 的热性能提供了一种方便有效的替代方案。