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Micromachines, Volume 15, Issue 1

January 2024 - 166 articles

Cover Story: For drug development, microfluidic devices are important for long-term experiments using organoids and tissues. While the devices extend culture duration, microbubbles often form inside and damage and starve the cells on the organoids and tissues. A microbubble removal method using negative pressure from the devices composed of polydimethylsiloxane (PDMS) has been reported. However, negative pressure is applied to entire devices, and this affects the cells in the device. In this study, a local microbubble removal method was developed using a device with thin PDMS sidewalls. The thin sidewalls counterbalanced the negative and atmospheric pressures, thereby localizing the negative pressure near the negatively pressurized chamber. Microbubbles were removed only near the chamber, whereas those away from the chamber were not removed. View this paper
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Articles (166)

  • Article
  • Open Access
5 Citations
2,892 Views
14 Pages

22 January 2024

The reliability of the resistor-capacitor (RC) time constant of a continuous-time (CT) filter has long been an obstacle with integrated circuits. Due to process and temperature variations in complementary metal-oxide semiconductor (CMOS) technology,...

  • Article
  • Open Access
4 Citations
2,754 Views
20 Pages

Gradient-Pattern Micro-Grooved Wicks Fabricated by the Ultraviolet Nanosecond Laser Method and Their Enhanced Capillary Performance

  • Guanghan Huang,
  • Jiawei Liao,
  • Chao Fan,
  • Shuang Liu,
  • Wenjie Miao,
  • Yu Zhang,
  • Shiwo Ta,
  • Guannan Yang and
  • Chengqiang Cui

22 January 2024

Capillary-gradient wicks can achieve fast or directional liquid transport, but they face fabrication challenges by traditional methods in terms of precise patterns. Laser processing is a potential solution due to its high pattern accuracy, but there...

  • Review
  • Open Access
4 Citations
2,815 Views
23 Pages

22 January 2024

With the increase in electronic devices across various applications, there is rising demand for selective carrier control. The split-gate consists of a gate electrode divided into multiple parts, allowing for the independent biasing of electric field...

  • Article
  • Open Access
6 Citations
1,990 Views
13 Pages

22 January 2024

A novel fluorescent “off” probe R-β-D-1 containing a 1,2,3-triazole moiety was obtained by the Click reaction with azidoglucose using H8-BINOL as a substrate, and the structure was characterized by 1H NMR and 13C NMR and ESI-MS analy...

  • Article
  • Open Access
3 Citations
2,148 Views
11 Pages

Interface Hardness Analysis of between IN625 and CoCrMo Manufactured by Pulsed Wave Laser Powder Bed Fusion

  • Zhiong Sheng Hoo,
  • Zhongmin Xiao,
  • Liming Yao,
  • Bozhong Jing,
  • Chuanjie Jin and
  • Chao Tang

21 January 2024

The nuclear and petrochemical industries often require multi-metal parts that are corrosion-resistant, heat-resistant, and possess high strength to enhance equipment safety and reduce downtime. Additive manufacturing technology enables the rapid and...

  • Article
  • Open Access
3 Citations
2,060 Views
14 Pages

21 January 2024

A sensitive non-contact sensing system based on the CoFeNiSiB amorphous ribbon giant magnetoimpedance (GMI) effect is proposed for current testing. The sensing system consists of a GMI probe, a sinusoidal current generator, a voltage follower, a prea...

  • Article
  • Open Access
2 Citations
2,108 Views
13 Pages

Integrated Microfluidic Chip Technology for Copper Ion Detection Using an All-Solid-State Ion-Selective Electrode

  • Wenpin Zhang,
  • Shuangquan Wang,
  • Dugang Kang,
  • Zhi Xiong,
  • Yong Huang,
  • Lin Ma,
  • Yun Liu,
  • Wei Zhao,
  • Shouliang Chen and
  • Yi Xu

21 January 2024

This study involved the preparation of an all-solid-state ion-selective electrode (ASS-ISE) with copper and a poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate (PEDOT/PSS) conversion layer through electrode deposition. The morphology of the...

  • Article
  • Open Access
7 Citations
2,991 Views
13 Pages

Flexible Symmetric-Defection Antenna with Bending and Thermal Insensitivity for Miniaturized UAV

  • Xueli Nan,
  • Tongtong Kang,
  • Zhonghe Zhang,
  • Xin Wang,
  • Jiale Zhang,
  • Yusheng Lei,
  • Libo Gao,
  • Jianli Cui and
  • Hongcheng Xu

21 January 2024

Flexible conformal-enabled antennas have great potential for various developable surface-built unmanned aerial vehicles (UAVs) due to their superior mechanical compliance as well as maintaining excellent electromagnetic features. However, it remains...

  • Article
  • Open Access
2 Citations
3,287 Views
16 Pages

21 January 2024

Two-photon lithography (TPL) is a laser-based additive manufacturing technique that enables the printing of arbitrarily complex cm-scale polymeric 3D structures with sub-micron features. Although various approaches have been investigated to enable th...

  • Article
  • Open Access
3 Citations
2,551 Views
12 Pages

20 January 2024

We present the characterization of a pn-junction GaAs nanowire. For the characterization, current–voltage, electron-beam-induced current, cathodoluminescence, and electron holography measurements are used. We show that by combining information...

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Micromachines - ISSN 2072-666X