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Micromachines, Volume 16, Issue 6

June 2025 - 123 articles

Cover Story: The controllable transport of droplets on solid surfaces is crucial for many applications, from water harvesting to bio-analysis. This study proposes reconfigurable orbital electrowetting (ROEW) on inclined slippery liquid-infused porous surfaces (SLIPSs) for controllable droplet transport and dynamic handling. The flexible reconfigurability is attributed to the non-contact wettability modulation and reversibly deformable flexible electrodes. ROEW enables reconfiguration of the wetting pathways by designing the electrode shapes and dynamically switching electrode configurations, achieving the controllable transport of various pathways and the dynamic handling of droplet sorting and mixing. ROEW provides a new approach for reconfigurable, electrode-free arrays and reusable microfluidics. View this paper
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Articles (123)

  • Article
  • Open Access
2 Citations
1,277 Views
15 Pages

Compact Frequency-Agile and Mode-Reconfigurable Antenna for C-Band, Sub-6-GHz-5G, and ISM Applications

  • Esraa Mousa Ali,
  • Wahaj Abbas Awan,
  • Anees Abbas,
  • Syed Mujahid Abbas and
  • Heba G. Mohamed

19 June 2025

This article presents the design and evaluation of a compact-sized antenna targeting heterogenous applications working in the C-band, 5G-sub-6GHz, and the ISM band. The antenna offers frequency reconfigurability along with multi-operational modes ran...

  • Article
  • Open Access
3,039 Views
11 Pages

19 June 2025

Detection of the vibration trajectories of MEMS micromirrors is crucial for ensuring their application performance. This study investigates key factors influencing micromirror vibration trajectories. When actuated by a square-wave signal containing h...

  • Article
  • Open Access
1 Citations
3,135 Views
20 Pages

19 June 2025

Purpose: The aim of this study is to achieve automated energy capture and charging for the ADXL355 accelerometer, enhance the vibration energy collection efficiency, and widen the energy trapping frequency band of a system in a working environment fo...

  • Article
  • Open Access
1 Citations
911 Views
18 Pages

19 June 2025

Levelers are indispensable additives for achieving void-free, bottom-up superconformal copper filling of microvias. Establishing the molecular-level correlation between leveler structure and performance is therefore essential to the continued advance...

  • Article
  • Open Access
1,344 Views
20 Pages

Radomizing an Antenna for a SAR-Based ETA Radar System While Ensuring Imaging Accuracy: A Focus on Phase Shifts

  • María Elena de Cos Gómez,
  • Alicia Flórez Berdasco,
  • Jaime Laviada Martínez and
  • Fernando Las-Heras Andrés

17 June 2025

The impact of radomization on the radiation pattern of a millimeter-wave antenna for an ETA system utilizing synthetic aperture radar (SAR) is examined with special emphasis placed on the phase shift across both the beamwidth and the bandwidth, rathe...

  • Article
  • Open Access
525 Views
15 Pages

17 June 2025

In this paper, the fabrication and testing of an integrated passive device (IPD) structure for X-band FMCW radar based on the fan-out wafer-level packaging (FOWLP) process are discussed. First, a transition line structure is added to the IPD structur...

  • Article
  • Open Access
1,023 Views
13 Pages

17 June 2025

This work investigates the impact of reset pulse width on multilevel conductance programming in Al2O3/TiOx-based resistive random access memory. A 32 × 32 cross-point array of Ti (12 nm)/Pt (62 nm)/Al2O3 (3 nm)/TiOx (32 nm)/Ti (14 nm)/Pt (60 nm...

  • Article
  • Open Access
714 Views
12 Pages

Designed Omnidirectional Antenna of Quarter-Mode Substrate-Integrated Waveguide Element with Characteristic Mode Analysis

  • Wei Hu,
  • Liangfu Peng,
  • Tao Tang,
  • Maged A. Aldhaeebi,
  • Thamer S. Almoneef and
  • Jaouhar Mouine

17 June 2025

This study investigates the design of omnidirectional antennas, using a characteristic mode analysis (CMA), and explores two distinct feeding methods. The first method employs equal-amplitude and in-phase excitation across all ports, whereas the seco...

  • Article
  • Open Access
793 Views
22 Pages

17 June 2025

The growing demand for high-speed and high-capacity wireless communication has intensified the need for compact, wideband, and efficient MIMO antenna systems, particularly for 5G mid-band and UWB applications. This article presents a miniaturized dua...

  • Article
  • Open Access
847 Views
14 Pages

Investigation of Efficient Mixing Enhancement in a Droplet Micromixer with Short Mixing Length at Low Reynolds Number

  • Yuanfang Qiu,
  • Xueze Zhang,
  • Mengzhen Hao,
  • Xu Yin,
  • Mengling Zhou,
  • Shichao Ma,
  • Yuanting Zhang,
  • Naiqian Jiang,
  • Li Xie and
  • Xichen Yuan
  • + 1 author

16 June 2025

Rapid mixing is widely prevalent in the field of microfluidics, encompassing applications such as biomedical diagnostics, drug delivery, chemical synthesis, and enzyme reactions. Mixing efficiency profoundly impacts the overall performance of these d...

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Micromachines - ISSN 2072-666X