Micro and Nanosensors: Fabrication, Applications and Performance Enhancements, 2nd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "E:Engineering and Technology".

Deadline for manuscript submissions: 28 February 2025 | Viewed by 1708

Special Issue Editors


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Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. Mickiewicza 30, 30-059 Cracow, Poland
Interests: voltammetry; carbon nanomaterials; carbon black; carbon nanotubes; pharmaceutical analysis
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Special Issue Information

Dear Colleagues,

The development of new types of micro/nanosensors is a rapidly growing field with increasing attention from researchers all over the world. In recent years, a strong interest in the miniaturization and integration of sensors while maintaining their high sensitivity, reliability, and selectivity has become visible. New constructions are often connected with novel materials used as the sensing elements, which can also provide advantages such as flexibility and variety in the shape of these sensors.

This Special Issue entitled “Micro and Nanosensors: Fabrication, Applications and Performance Enhancements, 2nd Edition” aims to highlight the current trends in the field of micro/nanosensors design and their application for solving analytical problems, such as food and pharmaceutical quality control analysis, environmental analysis, industry, or medical applications. We cordially invite you to contribute to this Special Issue. Review articles, communications, and full-size research papers are all welcome.

We look forward to and welcome your participation in this Special Issue.

Dr. Joanna Smajdor
Dr. Muhammad Butt
Guest Editors

Manuscript Submission Information

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Keywords

  • MEMS sensors
  • fiber optic sensors
  • resonant pressure sensor
  • electrochemical sensors
  • wearable sensors
  • plasmonic sensors
  • metasurfaces sensors
  • photonic crystal-based sensors

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Related Special Issue

Published Papers (2 papers)

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Research

13 pages, 3192 KiB  
Article
Suspended Slot Membrane Waveguide Based on Germanium-on-Silicon-on-Insulator at λ = 4.23 µm for CO2 Monitoring
by Muhammad A. Butt and Ryszard Piramidowicz
Micromachines 2024, 15(12), 1434; https://doi.org/10.3390/mi15121434 - 28 Nov 2024
Viewed by 553
Abstract
In this work, we propose a novel suspended slot membrane waveguide (SSMW) utilizing a germanium-on-silicon-on-insulator (Ge-on-SOI) platform for carbon dioxide (CO2) gas-sensing applications. The design and analysis focus on the absorption line of CO2 in the mid-infrared region, specifically at [...] Read more.
In this work, we propose a novel suspended slot membrane waveguide (SSMW) utilizing a germanium-on-silicon-on-insulator (Ge-on-SOI) platform for carbon dioxide (CO2) gas-sensing applications. The design and analysis focus on the absorption line of CO2 in the mid-infrared region, specifically at a wavelength of 4.23 µm. The waveguide geometry has been precisely optimized to achieve a high evanescent field ratio (EFR) and minimize waveguide propagation losses. These optimizations significantly enhance the sensitivity of the waveguide, making it highly effective for evanescent field absorption-based gas sensing. Our optimized waveguide geometry demonstrates a notable EFR of 0.86, with a low propagation loss of just 1.07 dB/cm, and achieves a sensitivity as high as ~1.12 × 10−4 ppm−1 for SSMW lengths as short as 0.9 cm. Full article
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10 pages, 8608 KiB  
Article
Large Range Curvature Measurement Using FBGs in Two-Core Fiber with Protective Coating
by Ruibin Chen, Lutian Li, Qianqing Yu, Zhijun Luo, Zhenggang Lian, Chuanxin Teng, Hang Qu and Xuehao Hu
Micromachines 2024, 15(11), 1310; https://doi.org/10.3390/mi15111310 - 28 Oct 2024
Viewed by 733
Abstract
In this work, we propose a fiber Bragg grating (FBG)-based sensor for curvature measurements. Two gratings are inscribed through the protective coating in a specialty optical fiber using focused femtosecond laser pulses and point-by-point direct writing technology. One grating is inscribed on the [...] Read more.
In this work, we propose a fiber Bragg grating (FBG)-based sensor for curvature measurements. Two gratings are inscribed through the protective coating in a specialty optical fiber using focused femtosecond laser pulses and point-by-point direct writing technology. One grating is inscribed on the central core adjacent to an air channel, while the other is inscribed on the eccentric core. The bending characteristics of the two-core fiber strongly depend on the bending direction due to the asymmetry of the fiber cores. A bending sensitivity of 58 pm/m1 is achieved by the FBG in the eccentric fiber core over the curvature range of 0–50 m1. Temperature and humidity cross-sensitivity could be significantly reduced by analyzing the differences in peak shifts between the two gratings. The sensor features a large sensing range and good robustness due to the presence of its protective buffer coating, which makes it a good candidate for curvature sensing in engineering fields. Full article
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