3D Printing of MEMS Technology, 3rd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D3: 3D Printing and Additive Manufacturing".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 1781

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Special Issue Information

Dear Colleagues,

Three-dimensional printing is one of the emerging technologies of our century. Since its first use in rapid prototyping, this technology has developed further towards rapid production, especially for complicated objects or small lot sizes. Nowadays, new 3D printing technologies enable printing even the smallest features at the micro- or even nanoscale. On the other hand, well-known problems, such as the waviness of fused deposition modeling (FDM)-printed parts, the lack of long-term stability of some typical printing materials, or the reduced mechanical properties of 3D-printed objects, still exist.

This Special Issue focuses on the 3D printing of MEMS technology, including various 3D printing techniques, and highlights the possibilities provided by recent technologies as well as the challenges which are still to be overcome. We now invite the most recent developments in this interdisciplinary research area for the third volume.

Prof. Dr. Andrea Ehrmann
Guest Editor

Manuscript Submission Information

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Keywords

  • 3D-printed nanostructures and nanocomposites for application in MEMS
  • lab-on-a-chip devices
  • microfluidics, microelectronics, microbatteries and other energy storage devices
  • micro- and nanosensors and actuators (physical, chemical, and biological)
  • challenges and possible solutions in using 3D printing technologies for MEMS
  • similar approaches related to 3D printing of MEMS technology

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Published Papers (1 paper)

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Research

18 pages, 15136 KiB  
Article
Biocompatible High-Resolution 3D-Printed Microfluidic Devices: Integrated Cell Chemotaxis Demonstration
by Mawla Boaks, Connor Roper, Matthew Viglione, Kent Hooper, Adam T. Woolley, Kenneth A. Christensen and Gregory P. Nordin
Micromachines 2023, 14(8), 1589; https://doi.org/10.3390/mi14081589 - 12 Aug 2023
Cited by 3 | Viewed by 1378
Abstract
We demonstrate a method to effectively 3D print microfluidic devices with high-resolution features using a biocompatible resin based on avobenzone as the UV absorber. Our method relies on spectrally shaping the 3D printer source spectrum so that it is fully overlapped by avobenzone’s [...] Read more.
We demonstrate a method to effectively 3D print microfluidic devices with high-resolution features using a biocompatible resin based on avobenzone as the UV absorber. Our method relies on spectrally shaping the 3D printer source spectrum so that it is fully overlapped by avobenzone’s absorption spectrum. Complete overlap is essential to effectively limit the optical penetration depth, which is required to achieve high out-of-plane resolution. We demonstrate the high resolution in practice by 3D printing 15 μm square pillars in a microfluidic chamber, where the pillars are separated by 7.7 μm and are printed with 5 μm layers. Furthermore, we show reliable membrane valves and pumps using the biocompatible resin. Valves are tested to 1,000,000 actuations with no observable degradation in performance. Finally, we create a concentration gradient generation (CG) component and utilize it in two device designs for cell chemotaxis studies. The first design relies on an external dual syringe pump to generate source and sink flows to supply the CG channel, while the second is a complete integrated device incorporating on-chip pumps, valves, and reservoirs. Both device types are seeded with adherent cells that are subjected to a chemoattractant CG, and both show clear evidence of chemotactic cellular migration. Moreover, the integrated device demonstrates cellular migration comparable to the external syringe pump device. This demonstration illustrates the effectiveness of our integrated chemotactic assay approach and high-resolution biocompatible resin 3D printing fabrication process. In addition, our 3D printing process has been tuned for rapid fabrication, as printing times for the two device designs are, respectively, 8 and 15 min. Full article
(This article belongs to the Special Issue 3D Printing of MEMS Technology, 3rd Edition)
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