Abstract
Porous Microneedles (MNs) offer broad advantages such as fluid capture and filtration. Compared to hollow MNs, fluid injection through porous MNs causes a broader diffusion spread. In this paper, we fabricated and compared three MN designs with a constant pore size and controlled pore locations, using two-photon polymerization (2PP), by examining factors such as diffusion spread, mixing capabilities, and mechanical resilience. Results show that the porous MN can cover 16 times the injection area than that of the hollow MN. Porous MNs also showed good mixing capabilities with two fluids. Mechanical compression results revealed that one porous MN could withstand a load of 0.6 N.
Original language | English (US) |
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Journal | Advanced Engineering Materials |
DOIs | |
State | Published - Jun 29 2023 |
Bibliographical note
KAUST Repository Item: Exported on 2023-07-04Acknowledgements: This research was supported by King Abdullah University of Science and Technology.
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics