出版日期：2025-07-29 00:00:00

著者：Guru Varun Penubarthi；Kishore Bhaskar Suresh Babu；Senthilkumar Sundararaj；Shung Wen Kang

著錄名稱、卷期、頁數：Micromachines 16(8), p.883

摘要：This study investigates the capillary performance and wetting behavior of SLA (Stereolithography) 3D-printed porous structures, focusing on TPMS (triply periodic minimal surfaces)-Gyroid, Octet, Diamond, and Isotruss lattice designs. High-speed imaging was used to analyze droplet interactions, including penetration, spreading, and contact angles, with 16 μL water droplets dropping from 30 mm at 0.77 m/s. Results showed variable contact angles, with Isotruss and Octet having higher angles, while Diamond faced measurement challenges due to surface roughness. Numerical simulations of TPMS-Gyroid of 2 mm3 unit cells validated the experimental results, and Diamond, Octet, and Isotruss structures were simulated. Capillary performance was assessed through deionized (DI) water weight–time (w-t) measurements, identifying that the TPMS-Gyroid structure performed adequately. Structures with 4 mm3 unit cells had low capillary performance, excluding them from permeability testing, whereas smaller 2 mm3 structures demonstrated capillary effects but had printability and cleaning issues. Permeability results indicated that Octet performed best, followed by Isotruss, Diamond, and TPMS-Gyroid. Findings emphasize unit cell size, beam thickness, and droplet positioning as key factors in optimizing fluid dynamics for cooling, filtration, and fluid management.

關鍵字：additive manufacturing; triply periodic minimal surfaces (TPMS); contact angle; permeability; capillary performance

語言：en

ISSN：2072-666X

期刊性質：國外

收錄於：SCI Scopus

審稿制度：是

國別：CHE

出版型式：電子版