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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
6 Citations
4,729 Views
24 Pages

Size Distribution Analysis with On-Chip Multi-Imaging Cell Sorter for Unlabeled Identification of Circulating Tumor Cells in Blood

  • Masao Odaka,
  • Hyonchol Kim,
  • Yoshiyasu Nakamura,
  • Akihiro Hattori,
  • Kenji Matsuura,
  • Moe Iwamura,
  • Yohei Miyagi and
  • Kenji Yasuda

25 February 2019

We report a change of the imaging biomarker distribution of circulating tumor cell (CTC) clusters in blood over time using an on-chip multi-imaging flow cytometry system, which can obtain morphometric parameters of cells and those clusters, such as c...

  • Article
  • Open Access
7 Citations
4,558 Views
19 Pages

25 February 2019

The aerodynamic lubrication performance of gas microbearing has a particularly critical impact on the stability of the bearing-rotor system in micromachines. Based on the Duwensee’s slip correction model and the fractal geometry theory, the int...

  • Article
  • Open Access
4 Citations
5,201 Views
10 Pages

25 February 2019

Some cells cultured in vitro have multiple nuclei. Since cultured cells are used in various fields of science, including tissue engineering, the nature of the multinucleated cells must be determined. However, multinucleated cells are not frequently o...

  • Article
  • Open Access
18 Citations
5,691 Views
8 Pages

25 February 2019

In this study, a tungsten-SiO2-based metal–insulator–metal-structured metasurface for the thermal emitter of the thermophotovoltaic system was designed and fabricated. The proposed emitter was fabricated by applying the photolithography m...

  • Article
  • Open Access
13 Citations
4,759 Views
15 Pages

25 February 2019

This paper presents the design, simulation, fabrication and experiments of a micromachined z-axis tunneling magnetoresistive accelerometer with electrostatic force feedback. The tunneling magnetoresistive accelerometer consists of two upper different...

  • Article
  • Open Access
12 Citations
4,340 Views
13 Pages

23 February 2019

In the Hadamard transform (HT) near-infrared (NIR) spectrometer, there are defects that can create a nonuniform distribution of spectral energy, significantly influencing the absorbance of the whole spectrum, generating stray light, and making the si...

  • Article
  • Open Access
34 Citations
4,085 Views
12 Pages

23 February 2019

Solution-processable nonvolatile memory devices, consisted of graphene oxide (GO) embedded into an insulating polymer polymethyl methacrylate (PMMA), were manufactured. By varying the GO content in PMMA nanocomposite films, the memristic conductance...

  • Article
  • Open Access
2 Citations
3,612 Views
8 Pages

23 February 2019

Whispering-gallery-mode (WGM) microresonators have shown their potential in high-precision gyroscopes because of their small volume and high-quality factors. However, Kerr noise can always be the limit of accuracy. Angular-rate sensing based on mode...

  • Review
  • Open Access
155 Citations
14,753 Views
27 Pages

Advances in Capacitive Micromachined Ultrasonic Transducers

  • Kevin Brenner,
  • Arif Sanli Ergun,
  • Kamyar Firouzi,
  • Morten Fischer Rasmussen,
  • Quintin Stedman and
  • Butrus (Pierre) Khuri–Yakub

23 February 2019

Capacitive micromachined ultrasonic transducer (CMUT) technology has enjoyed rapid development in the last decade. Advancements both in fabrication and integration, coupled with improved modelling, has enabled CMUTs to make their way into mainstream...

  • Article
  • Open Access
4 Citations
5,142 Views
14 Pages

23 February 2019

Quartz crystal microbalance (QCM) is still a new high-precision surface detection technique. However, the adsorption quality detected by the QCM currently contains a solvent-coupling quality and cannot separate the actual biomolecular mass. Local sur...

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Micromachines - ISSN 2072-666X