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Micromachines, Volume 10, Issue 2

February 2019 - 83 articles

Cover Story: Digital microfluidic chips (DMFs) manipulate droplets on the surface of electrode arrays coated with a dielectric film and are actuated by applying an electrical potential, providing a practical way for fluidic manipulation in microfluidic devices. However, the fabrication of a DMF chip is rather complicated. A set of patterned electrode arrays and a thin dielectric layer must be fabricated, which currently rely on lithography and sputtering, inkjet printing, or printed circuit boards with etching. We newly developed an affordable alternative to fabricate DMF paper chips that adapted ballpoint pens for drawing electrode patterns and a commercial food warp as a substitute for the dielectric layer, providing a simple, easy, and rapid way to fabricate paper-based DMF chips. View this paper
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Articles (83)

  • Article
  • Open Access
25 Citations
4,905 Views
11 Pages

Investigation of Micromachined Antenna Substrates Operating at 5 GHz for RF Energy Harvesting Applications

  • Noor Hidayah Mohd Yunus,
  • Jumril Yunas,
  • Alipah Pawi,
  • Zeti Akma Rhazali and
  • Jahariah Sampe

22 February 2019

This paper investigates micromachined antenna performance operating at 5 GHz for radio frequency (RF) energy harvesting applications by comparing different substrate materials and fabrication modes. The research aims to discover appropriate antenna d...

  • Article
  • Open Access
19 Citations
4,310 Views
12 Pages

Experimental Investigation on Direct Micro Milling of Cemented Carbide

  • Xian Wu,
  • Liang Li,
  • Ning He,
  • Guolong Zhao and
  • Jianyun Shen

22 February 2019

Cemented carbide is currently used for various precise molds and wear resistant parts. However, the machining of cemented carbide still is a difficult challenge due to its superior mechanical properties. In this paper, an experimental study was condu...

  • Article
  • Open Access
4 Citations
3,652 Views
16 Pages

In Situ Image Acquisition and Measurement of Microdroplets Based on Delay Triggering

  • Xuefeng Chang,
  • Kang Zheng,
  • Dan Xie,
  • Xiayun Shu,
  • Keyu Xu,
  • Wenhuan Chen,
  • Bo Li and
  • Changjian Wu

22 February 2019

An in situ image acquisition apparatus based on delay triggering for visualizing microdroplets formation is described. The imaging system includes a charge-coupled device camera, a motion control card, a driving circuit, a time delay triggering circu...

  • Article
  • Open Access
6 Citations
6,543 Views
17 Pages

The Effect of Microfluidic Geometry on Myoblast Migration

  • Rahul Atmaramani,
  • Bryan J. Black,
  • Kevin H. Lam,
  • Vinit M. Sheth,
  • Joseph J. Pancrazio,
  • David W. Schmidtke and
  • Nesreen Zoghoul Alsmadi

21 February 2019

In vitro systems comprised of wells interconnected by microchannels have emerged as a platform for the study of cell migration or multicellular models. In the present study, we systematically evaluated the effect of microchannel width on spontaneous...

  • Review
  • Open Access
63 Citations
14,088 Views
20 Pages

21 February 2019

Bionic flapping-wing micro air vehicles (FWMAVs) are promising for a variety of applications because of their flexibility and high mobility. This study reviews the state-of-the-art FWMAVs of various research institutes driven by electrical motor, mec...

  • Feature Paper
  • Article
  • Open Access
31 Citations
6,881 Views
13 Pages

Piezoelectric MEMS Resonators for Cigarette Particle Detection

  • Javier Toledo,
  • Víctor Ruiz-Díez,
  • Maik Bertke,
  • Hutomo Suryo Wasisto,
  • Erwin Peiner and
  • José Luis Sánchez-Rojas

21 February 2019

In this work, we demonstrate the potential of a piezoelectric resonator for developing a low-cost sensor system to detect microscopic particles in real-time, which can be present in a wide variety of environments and workplaces. The sensor working pr...

  • Article
  • Open Access
28 Citations
6,471 Views
20 Pages

Nanostructured Fe,Co-Codoped MoO3 Thin Films

  • Olfa Kamoun,
  • Amel Mami,
  • Mohamed Aymen Amara,
  • Ruxandra Vidu and
  • Mosbah Amlouk

20 February 2019

Molybdenum oxide (MoO3) and Fe,Co-codoped MoO3 thin films obtained by spray pyrolysis have been in-depth investigated to understand the effect of Co and Fe codoping on MoO3 thin films. The effect of Fe and Co on the structural, morphological and opti...

  • Feature Paper
  • Article
  • Open Access
20 Citations
7,163 Views
10 Pages

Graphene-Based Wireless Tube-Shaped Pressure Sensor for In Vivo Blood Pressure Monitoring

  • Nagisa Inoue,
  • Yoshihiko Koya,
  • Norihisa Miki and
  • Hiroaki Onoe

20 February 2019

We propose a wireless pressure sensor composed of a graphene sheet and a transmitter coil integrated with a polydimethylsiloxane (PDMS) tube. The pressure inside the tube was monitored wirelessly using an external receiver coil. We then monitored the...

  • Article
  • Open Access
8 Citations
3,829 Views
14 Pages

20 February 2019

Graphene oxide (GO) has been actively utilized in nonvolatile resistive switching random access memory (ReRAM) devices due to solution-processability, accessibility for highly scalable device fabrication for transistor-based memory, and cross-bar mem...

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Micromachines - ISSN 2072-666X