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Micromachines, Volume 14, Issue 12

December 2023 - 125 articles

Cover Story: Ferroelectret nanogenerators (FENGs) have gained attention for acoustic applications due to their high electromechanical conversion efficiency and low Young’s modulus. This paper reviews advancements in using FENGs for acoustics. It describes FENG operational mechanisms in acoustics, comparing fabrication methods and materials’ effects on properties. FENG acoustic applications are categorized into sensing, actuation, and energy harvesting. Implementations in these areas are detailed, with future directions and challenges outlined. FENG acoustic applications demonstrate adaptability to diverse needs. By showing FENGs’ wide applications range, this paper exhibits their potential to meet individual acoustic requirements through tailored fabrication and implementation. Further materials and design refinements may yield improved FENG acoustic performance. View this paper
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Articles (125)

  • Article
  • Open Access
1 Citations
1,974 Views
21 Pages

16 December 2023

Three new methods for accurate electronic component positioning for thermoformed electronics are presented in this paper. To maintain the mechanical and electrical properties of printed-ink tracks, prevent deformation and stretching during thermoform...

  • Article
  • Open Access
1 Citations
1,754 Views
11 Pages

16 December 2023

Microfluidic devices, which miniaturize cell culture and chemical experiments from lab-scale to microchip dimensions, have gained significant attention in recent years. Extensive research has been conducted on microfluidic mixers, which facilitate th...

  • Article
  • Open Access
2 Citations
2,534 Views
17 Pages

15 December 2023

Sparse-view reconstruction has garnered significant interest in X-ray computed tomography (CT) imaging owing to its ability to lower radiation doses and enhance detection efficiency. Among current methods for sparse-view CT reconstruction, an algorit...

  • Article
  • Open Access
3 Citations
4,520 Views
18 Pages

A Low-Power SAR ADC with Capacitor-Splitting Energy-Efficient Switching Scheme for Wearable Biosensor Applications

  • Yunfeng Hu,
  • Qingming Huang,
  • Bin Tang,
  • Chaoyi Chen,
  • Lexing Hu,
  • Enhao Yu,
  • Bin Li and
  • Zhaohui Wu

15 December 2023

A low-power SAR ADC with capacitor-splitting energy-efficient switching scheme is proposed for wearable biosensor applications. Based on capacitor-splitting, additional reference voltage Vcm, and common-mode techniques, the proposed switching scheme...

  • Editorial
  • Open Access
1 Citations
1,365 Views
4 Pages

15 December 2023

Advanced manufacturing technology and systems (AMTS) combine the principles of mechanical engineering with innovative design to create products and processes that are better, faster, and more precise [...]

  • Article
  • Open Access
3 Citations
3,504 Views
11 Pages

A Method for Fast Au-Sn Bonding at Low Temperature Using Thermal Gradient

  • Wenchao Wang,
  • Ziyu Liu,
  • Delong Qiu,
  • Zhiyuan Zhu,
  • Na Yan,
  • Shijin Ding and
  • David Wei Zhang

15 December 2023

Flip chip bonding technology on gold–tin (Au-Sn) microbumps for MEMS (Micro Electro Mechanical Systems) and 3D packaging is becoming increasingly important in the electronics industry. The main advantages of Au-Sn microbumps are a low electrica...

  • Article
  • Open Access
2 Citations
1,964 Views
12 Pages

Quality Factor Improvement of a Thin-Film Piezoelectric-on-Silicon Resonator Using a Radial Alternating Material Phononic Crystal

  • Chuang Zhu,
  • Muxiang Su,
  • Temesgen Bailie Workie,
  • Panliang Tang,
  • Changyu Ye and
  • Jing-Fu Bao

15 December 2023

This paper studies the radial alternating material phononic crystal (RAM-PnC). By simulating the band gap structure of the phononic crystal, a complete acoustic band gap was verified at the resonant frequency of 175.14 MHz, which can prevent the prop...

  • Article
  • Open Access
7 Citations
2,381 Views
17 Pages

Investigation of Surface Integrity Induced by Ultra-Precision Grinding and Scratching of Glassy Carbon

  • Kirk Jahnel,
  • Robert Michels,
  • Dennis Patrick Wilhelm,
  • Tim Grunwald and
  • Thomas Bergs

14 December 2023

Glassy carbon provides material characteristics that make it a promising candidate for use as a mould material in precision glass moulding. However, to effectively utilize glassy carbon, a thorough investigation into the machining of high-precision o...

  • Article
  • Open Access
8 Citations
1,577 Views
12 Pages

Assessing the Discriminatory Capabilities of iEK Devices under DC and DC-Biased AC Stimulation Potentials

  • Nuzhet Nihaar Nasir Ahamed,
  • Carlos A. Mendiola-Escobedo,
  • Victor H. Perez-Gonzalez and
  • Blanca H. Lapizco-Encinas

14 December 2023

There is a rising need for rapid and reliable analytical methods for separating microorganisms in clinical and biomedical applications. Microscale-insulator-based electrokinetic (iEK) systems have proven to be robust platforms for assessing a wide va...

  • Article
  • Open Access
1 Citations
2,230 Views
14 Pages

A 77 GHz Power Amplifier with 19.1 dBm Peak Output Power in 130 nm SiGe Process

  • Peigen Zhou,
  • Pinpin Yan,
  • Jixin Chen,
  • Zhe Chen and
  • Wei Hong

14 December 2023

This article reports a two-stage differential structure power amplifier based on a 130 nm SiGe process operating at 77 GHz. By introducing a tunable capacitor for amplitude and phase balance at the center tap of the secondary coil of the traditional...

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Micromachines - ISSN 2072-666X