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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)

  • Feature Paper
  • Article
  • Open Access
1 Citations
3,016 Views
12 Pages

18 December 2023

Sample preparation for mass spectroscopy typically involves several liquid and solid phase clean-ups, extractions, and other unit operations, which are labour-intensive and error-prone. We demonstrate a centrifugal microfluidic platform that automate...

  • Article
  • Open Access
3 Citations
1,514 Views
15 Pages

Magnetic-Field-Assisted Scratching Process of Single-Crystal Copper

  • Xian Wu,
  • Kechuang Zhang,
  • Ke Sun,
  • Feng Jiang,
  • Jianyun Shen,
  • Hongyou Li and
  • Lizhi Gu

18 December 2023

Energy-field-assisted cutting exhibits excellent ability to reduce cutting force and improve machining quality. In this study, a magnetic field was applied in an innovative way to aid in the cutting process, and magnetic-field-assisted scratching exp...

  • Communication
  • Open Access
1,527 Views
7 Pages

18 December 2023

The precise positioning of the laser focal spot on the substrate is an important issue for laser microfabrication. In this work, a diffraction pattern-based focal spot positioning method (DFSPM) is proposed to achieve the precise positioning of the l...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,535 Views
13 Pages

18 December 2023

In recent decades, vapor sensors have gained substantial attention for their crucial roles in environmental monitoring and pharmaceutical applications. Herein, we introduce a chameleon-inspired colorimetric (CIC) sensor, detailing its design, fabrica...

  • Review
  • Open Access
12 Citations
4,130 Views
59 Pages

17 December 2023

Micro- and nanorobots are highly intelligent and efficient. They can perform various complex tasks as per the external stimuli. These robots can adapt to the required functional form, depending on the different stimuli, thus being able to meet the re...

  • Article
  • Open Access
5 Citations
2,073 Views
12 Pages

17 December 2023

Microrobots have emerged as a promising precision therapy approach that has been widely used in minimally invasive treatments, targeted drug delivery, and wound cleansing, and they also offer a potential new method for actively modulating gut microbi...

  • Article
  • Open Access
11 Citations
1,784 Views
15 Pages

Theoretical Justification of Structural, Magnetoelectronic and Optical Properties in QFeO3 (Q = Bi, P, Sb): A First-Principles Study

  • Amna Parveen,
  • Zeesham Abbas,
  • Sajjad Hussain,
  • Shoyebmohamad F. Shaikh,
  • Muhammad Aslam and
  • Jongwan Jung

17 December 2023

One of the primary objectives of scientific research is to create state-of-the-art multiferroic (MF) materials that exhibit interconnected properties, such as piezoelectricity, magnetoelectricity, and magnetostriction, and remain functional under nor...

  • Article
  • Open Access
7 Citations
2,382 Views
16 Pages

17 December 2023

Real-time monitoring of human joint motion holds paramount importance in assessing joint health status, preventing and treating joint diseases, and evaluating physical flexibility and coordination. However, traditional strain sensors face limitations...

  • Review
  • Open Access
13 Citations
6,116 Views
21 Pages

Sensors in the Detection of Abused Substances in Forensic Contexts: A Comprehensive Review

  • Luana M. Rosendo,
  • Mónica Antunes,
  • Ana Y. Simão,
  • Ana Teresa Brinca,
  • Gonçalo Catarro,
  • Rodrigo Pelixo,
  • João Martinho,
  • Bruno Pires,
  • Sofia Soares and
  • José Francisco Cascalheira
  • + 4 authors

17 December 2023

Forensic toxicology plays a pivotal role in elucidating the presence of drugs of abuse in both biological and solid samples, thereby aiding criminal investigations and public health initiatives. This review article explores the significance of sensor...

  • Article
  • Open Access
9 Citations
2,681 Views
17 Pages

Experimental Investigations of Using Aluminum Oxide (Al2O3) and Nano-Graphene Powder in the Electrical Discharge Machining of Titanium Alloy

  • Rakesh Chaudhari,
  • Sakshum Khanna,
  • Vivek K. Patel,
  • Jay Vora,
  • Soraya Plaza and
  • Luis Norberto López de Lacalle

16 December 2023

In the present study, a comprehensive parametric analysis was carried out using the electrical discharge machining of Ti6Al4V, using pulse-on time, current, and pulse-off time as input factors with output measures of surface roughness and material re...

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Micromachines - ISSN 2072-666X