Nanomaterial/Composite-Based Electrochemical (Bio)Sensing Microsystem

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "B:Biology and Biomedicine".

Deadline for manuscript submissions: closed (30 September 2025) | Viewed by 3409

Special Issue Editor


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Guest Editor
Department of Bio-Convergence Science, Jeonbuk National University, Jeongeup Campus, Jeongeup 56212, Republic of Korea
Interests: solar cells; catalysts; sensors; nanomaterials; synthesis
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Special Issue Information

Dear Colleagues,

Electrochemical (bio)sensing platforms have gained significant attention due to their sensitivity, selectivity, and rapid response time. The utilization of nanomaterials and composites as electrode materials has further enhanced the capabilities of these platforms, making them more efficient and versatile for various applications, including medical diagnostics, environmental monitoring, and food safety. The high surface area of nanomaterials as electrode materials, resulting in increased sensitivity, shows high selectivity towards target analytes, and the excellent electrical conductivity of nanomaterials enables fast electron transfer, which contributes to a quicker response time in detecting analytes. We would like to draw your attention to our upcoming Special Issue on “Nanomaterial/Composite-Based Electrochemical (Bio)sensing Platform”, which will be published in Micromachines (ISSN 2072-666X, IF-3.4, https://www.mdpi.com/journal/micromachines), an international peer-reviewed open access journal by MDPI. The purpose of this Special Issue is to solicit original contributions and publish recent advances in nanomaterial/composite-based electrochemical (bio)sensors.

For further reading, please follow the link to the Special Issue Website at Micromachines. The deadline for this submission is 28 February 2025. However, we encourage you to submit your work as soon as it is ready. Please note that all submitted articles will undergo peer review.

In case of any inquiries or if you need any additional information, please do not hesitate to contact us at sadiaameen@jbnu.ac.kr. We look forward to your contributions.

Dr. Sadia Ameen
Guest Editor

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Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemical sensor
  • nanomaterials
  • biomaterials
  • electrodes
  • electrical devices
  • composites
  • photoelectrochemical systems

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Published Papers (2 papers)

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Research

13 pages, 2399 KB  
Article
A Composite Structure of Modified Silver Nanoparticles for Improving the Recognition Performance of Electrode
by Jiao Yang, Liqin Cui, Yibo Zhao and Xiaoping Wu
Micromachines 2026, 17(3), 384; https://doi.org/10.3390/mi17030384 - 21 Mar 2026
Viewed by 261
Abstract
To meet the demand for rapid detection of methylene blue residues in aquatic products, this study constructed a composite structure modified with silver nanoparticles on the surface of a glassy carbon sheet for precise detection. This composite film used the synergistic effect of [...] Read more.
To meet the demand for rapid detection of methylene blue residues in aquatic products, this study constructed a composite structure modified with silver nanoparticles on the surface of a glassy carbon sheet for precise detection. This composite film used the synergistic effect of the composite structure, which significantly enhanced the current response between the composite film and MB. The CV and EIS results demonstrated that this composite structure exhibited outstanding performance, endowing the composite film with the capability for sensitive detection of methyl blue. The results showed that the composite film detected methylene blue by differential pulse voltammetry, with a limit of detection as low as 1.6 nM. In the concentration range of 10 nM to 120 nM, the current intensity presented a good linear relationship with the concentration of MB. In addition, this composite film successfully identified methylene blue in aquatic products, with a recovery rate ranging from 81% to 113%. The results indicated that the composite film could be effectively applied to the sensitive detection of methylene blue in complex samples. This study provided a reliable and easy-to-construct electrochemical sensing platform for aquatic product safety monitoring. Full article
(This article belongs to the Special Issue Nanomaterial/Composite-Based Electrochemical (Bio)Sensing Microsystem)
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14 pages, 9640 KB  
Article
Highly Dense TiO2 Nanorods as Potential Electrode Material for Electrochemical Detection of Multiple Heavy Metal Ions in Aqueous Medium
by Sadia Ameen
Micromachines 2025, 16(3), 275; https://doi.org/10.3390/mi16030275 - 27 Feb 2025
Cited by 2 | Viewed by 1143
Abstract
This study describes the direct deposition of extremely dense TiO2 nanorods (NRs) on an ITO substrate for the improved detection of heavy metal ions (HMIs). A facile hydrothermal method was employed to synthesize TiO2 NRs on the ITO substrate at ~130 [...] Read more.
This study describes the direct deposition of extremely dense TiO2 nanorods (NRs) on an ITO substrate for the improved detection of heavy metal ions (HMIs). A facile hydrothermal method was employed to synthesize TiO2 NRs on the ITO substrate at ~130 °C. Synthesized TiO2 NRs were analyzed for morphological, structural, and electrochemical properties. As an electrode material, TiO2 NRs were used for the simultaneous detection of three HMIs (i.e., Cr3+, Cu2+, and Hg2+), which showed a remarkably high sensitivity of ~92.2 µA.mM−1.cm−2 for the Cu2+ ion. Relatively low sensitivities of ~15.6 µA.mM−1.cm−2 and ~19.67 µA.mM−1.cm−2 were recorded for the Cr3+ and Hg2+ ions, respectively. The fabricated TiO2 NR-based HMI sensor showed an effective dynamic linear detection range with low LOD values of ~21.7 mM, 37 mM, and ~ 28.5 mM for Cr3+, Cu2+, and Hg2+, respectively. The TiO2 NR-based HMI sensor exhibited efficient charge transfer over the electrode toward the trace detection of Cr3+, Cu2+, and Hg2+. Moreover, the reliability of the TiO2 NR-based HMI sensor was assessed, which exhibited a promising stability of 30 days. The obtained results indicate that TiO2 NRs grown on an ITO substrate are a promising electrode material for detecting hazardous Cr3+, Cu2+, and Hg2+ and might eventually be commercialized in the near future. Full article
(This article belongs to the Special Issue Nanomaterial/Composite-Based Electrochemical (Bio)Sensing Microsystem)
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