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Micromachines, Volume 16, Issue 9

September 2025 - 109 articles

Cover Story: Microneedle arrays (MNAs) offer a minimally invasive way to monitor animal responses to heat and osmotic stress, key in adapting to global warming. These devices access interstitial fluid (ISF), which reflects blood biomarkers. While effective in humans, adapting MNAs for large farm animals like pigs and cattle requires redesign due to skin differences and species-specific behaviors. The study addressed these technological challenges to create effective MNAs with 37 microneedles, each 2.8 mm tall, using a biocompatible hydrogel (dextran-methacrylate). These arrays successfully pierced pig and cow skin and absorbed ~10 µL of fluid within 3 hours. This innovation supports improved physiological monitoring in livestock, addressing key challenges in animal health tracking under environmental stress. View this paper
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Articles (109)

  • Article
  • Open Access
594 Views
22 Pages

22 September 2025

The polymer deposition layer (PDL) formed during inductively coupled plasma (ICP) processing significantly limits the figuring accuracy and surface quality of fused silica optics. This study investigates the formation mechanism, composition, and evol...

  • Article
  • Open Access
1 Citations
800 Views
14 Pages

22 September 2025

The overlying rock layers in a mining area may collapse or settle, subjecting pipelines to uneven forces that can lead to deformation or even fracture. This paper proposes a pipeline safety monitoring method that combines fiberoptic vibration and str...

  • Feature Paper
  • Article
  • Open Access
3,249 Views
14 Pages

22 September 2025

Electromagnetic micro-electro-mechanical system (MEMS) micromirrors are widely used in optical scanning systems but often encounter mechanical crosstalk due to the use of shared drive coils. This phenomenon leads to parasitic motion along the slow ax...

  • Article
  • Open Access
693 Views
19 Pages

22 September 2025

This paper focuses on the scoring-wheel cutting process for circular structures of OLED display panels, conducting in-depth research through an experiment–analysis–optimization system. Based on the Taguchi experimental design, a three-fac...

  • Article
  • Open Access
619 Views
11 Pages

A Study on the Transient Process of Contact-Mode Triboelectric Nanogenerators

  • Shengyao Zhang,
  • Hongchun Luo,
  • Ru Zhang,
  • Shun Ye,
  • Haoyu Wei,
  • Zhiqiang Zeng,
  • Futi Liu and
  • Guiyu Zhou

22 September 2025

In the research of triboelectric nanogenerators (TENGs), most attention has been paid to material modification, structural design, and power management. Little study has been performed on the transient process of TENGs, although the capacitance chara...

  • Article
  • Open Access
509 Views
14 Pages

Design and Research of Superimposed Force Sensor

  • Genshang Wu,
  • Jinggan Shao,
  • Yicun Xu,
  • Zhanshu He and
  • Shifei Liu

22 September 2025

The measurement accuracy and equipment stability of superposition-type force sensors are primarily influenced by the layout and number of individual force sensors. Analyzing this impact effect through experimental testing for each configuration would...

  • Article
  • Open Access
722 Views
16 Pages

Non-Invasive Three-Dimensional Cell Manipulation Technology Based on Acoustic Microfluidic Chips

  • Lin Lin,
  • Yiming Zhen,
  • Wang Li,
  • Guoqiang Dong,
  • Rongxing Zhu and
  • Minhui Liang

22 September 2025

This study presents a non-invasive three-dimensional cell manipulation technique based on acoustic microfluidic chips, which generates acoustic flow fields through the vibration of micropillars induced by bulk acoustic waves to achieve precise multi-...

  • Article
  • Open Access
743 Views
9 Pages

High Power Density X-Band GaN-on-Si HEMTs with 10.2 W/mm Used by Low Parasitic Gold-Free Ohmic Contact

  • Jiale Du,
  • Hao Lu,
  • Bin Hou,
  • Ling Yang,
  • Meng Zhang,
  • Mei Wu,
  • Kaiwen Chen,
  • Tianqi Pan,
  • Yifan Chen and
  • Hailin Liu
  • + 3 authors

22 September 2025

To enhance the RF power properties of CMOS-compatible gold-free GaN devices, this work introduces a kind of GaN-on-Si HEMT with a low parasitic regrown ohmic contact technology. Attributed to the highly doped n+ InGaN regrown layer and smooth morphol...

  • Article
  • Open Access
623 Views
11 Pages

21 September 2025

This study employs reactive magnetron sputtering technology to fabricate TiN/Y-HfO2/TiN multilayer thin film devices using titanium targets and yttrium-doped high-purity hafnium targets. A systematic investigation was conducted to explore the influen...

  • Article
  • Open Access
850 Views
18 Pages

21 September 2025

Zirconia (ZrO2) ceramics are advanced structural materials that exhibit exceptional performance in aerospace and other heavy-duty applications. Since conventional machining of ZrO2 ceramics presents significant challenges, this study employs the long...

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Micromachines - ISSN 2072-666X