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Micromachines
Special Issues
Novel Materials and Their Sensing Applications
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Novel Materials and Their Sensing Applications

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

Deadline for manuscript submissions: closed (15 March 2024) | Viewed by 7503

Special Issue Editors

Dr. Xiaoshan Zhu

E-Mail Website
Guest Editor
Department of Electrical and Biomedical Engineering, University of Nevada Reno, Reno, NV 89557, USA
Interests: luminescence materials; nanoparticles; biosensing; trace gas sensing; instrumentation
Special Issues, Collections and Topics in MDPI journals
Dr. Zhigang Xiao

E-Mail Website
Guest Editor
Department of Electrical Engineering and Computer Science, Alabama A&M University, Normal, AL 35762, USA
Interests: electronic materials; nanomaterials; MEMS; microfabrication; sensors

Special Issue Information

Dear Colleagues,

Sensors are important tools in addressing fundamental challenges related to human well-being which is defined as judging life positively and feeling good and is ensured by good health, effective agricultural production of food and green energy, and safe environments. These challenges include: how to achieve rapid and early diagnosis of infectious diseases, how to monitor harmful live pathogens or contaminants in environmental water and thus prevent their possible propagation to human through zoonoses or the food chain, how to monitor long-term psychological/physiological parameters to manage chronic illnesses, how to understand plants’ responses to stresses in order to engineer plants that are resilient to harsh growth conditions and produce more foods and green energy, and so on. 

Recent years have seen significant efforts in developing novel materials to achieve unprecedented sensing sensitivities in addressing above questions. Not all inclusive, representative research outcomes from pioneers include new molecular structures, noble-metal or single-atom based nanozymes, plasmonic nanocavities, 2D transition metal oxides, etc. Such novel materials as sensing transducers, due to their specific optical properties or electronic structures, can efficiently convert recognition events to detectable signals. They also render sensors for inner-cellular or in vivo detection, wearable/implantable device development, etc. 

This Special Issue calls for research papers and review articles presenting recent studies on novel materials and their sensing applications.

Dr. Xiaoshan Zhu
Dr. Zhigang Xiao
Guest Editors

Manuscript Submission Information 

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 communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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 2600 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

  • functional materials (organic, inorganic, or hybrid materials)
  • sensors (physical sensors, chemical sensors, biosensors)
  • signal transducers (electrical/optical/mechanical/chemical/electrochemical/biological signal transduction methods)

Published Papers (4 papers)

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Research

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14 pages, 4889 KiB  
Article
Enhancing Electrochemical Non-Enzymatic Dopamine Sensing Based on Bimetallic Nickel/Cobalt Phosphide Nanosheets
by Zhi-Yuan Wang, Zong-Ying Tsai, Han-Wei Chang and Yu-Chen Tsai
Micromachines 2024, 15(1), 105; https://doi.org/10.3390/mi15010105 - 6 Jan 2024
Cited by 1 | Viewed by 1108
Abstract
In this study, the successful synthesis of bimetallic nickel/cobalt phosphide nanosheets (Ni-Co-P NSs) via the hydrothermal method and the subsequent high-temperature phosphorization process were both confirmed. Ni-Co-P NSs exhibited excellent electrocatalytic activity for the electrochemical non-enzymatic DA sensing. The surface morphologies and physicochemical [...] Read more.
In this study, the successful synthesis of bimetallic nickel/cobalt phosphide nanosheets (Ni-Co-P NSs) via the hydrothermal method and the subsequent high-temperature phosphorization process were both confirmed. Ni-Co-P NSs exhibited excellent electrocatalytic activity for the electrochemical non-enzymatic DA sensing. The surface morphologies and physicochemical properties of Ni-Co-P NSs were characterized by atomic force microscopy (AFM), field-emission scanning (FESEM), field-emission transmission electron microscopy (FETEM), and X-ray diffraction (XRD). Further, the electrochemical performance was evaluated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The metallic nature of phosphide and the synergistic effect of Ni/Co atoms in Ni-Co-P NSs provided abundant catalytic active sites for the electrochemical redox reaction of DA, which exhibited a remarkable consequence with a wide linear range from 0.3~50 μM, a high sensitivity of 2.033 µA µM−1 cm−2, a low limit of detection of 0.016 µM, and anti-interference ability. As a result, the proposed Ni-Co-P NSs can be considered an ideal electrode material for the electrochemical non-enzymatic DA sensing. Full article
(This article belongs to the Special Issue Novel Materials and Their Sensing Applications)
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Review

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22 pages, 3530 KiB  
Review
An Overview of Electrochemical Sensors Based on Transition Metal Carbides and Oxides: Synthesis and Applications
by Amirarsalan Mashhadian, Ruda Jian, Siyu Tian, Shiwen Wu and Guoping Xiong
Micromachines 2024, 15(1), 42; https://doi.org/10.3390/mi15010042 - 24 Dec 2023
Viewed by 1726
Abstract
Sensors play vital roles in industry and healthcare due to the significance of controlling the presence of different substances in industrial processes, human organs, and the environment. Electrochemical sensors have gained more attention recently than conventional sensors, including optical fibers, chromatography devices, and [...] Read more.
Sensors play vital roles in industry and healthcare due to the significance of controlling the presence of different substances in industrial processes, human organs, and the environment. Electrochemical sensors have gained more attention recently than conventional sensors, including optical fibers, chromatography devices, and chemiresistors, due to their better versatility, higher sensitivity and selectivity, and lower complexity. Herein, we review transition metal carbides (TMCs) and transition metal oxides (TMOs) as outstanding materials for electrochemical sensors. We navigate through the fabrication processes of TMCs and TMOs and reveal the relationships among their synthesis processes, morphological structures, and sensing performance. The state-of-the-art biological, gas, and hydrogen peroxide electrochemical sensors based on TMCs and TMOs are reviewed, and potential challenges in the field are suggested. This review can help others to understand recent advancements in electrochemical sensors based on transition metal oxides and carbides. Full article
(This article belongs to the Special Issue Novel Materials and Their Sensing Applications)
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17 pages, 4252 KiB  
Review
Recent Progress in Transition Metal Dichalcogenides for Electrochemical Biomolecular Detection
by Sasya Madhurantakam, Georgeena Mathew, Bianca Elizabeth David, Aliya Naqvi and Shalini Prasad
Micromachines 2023, 14(12), 2139; https://doi.org/10.3390/mi14122139 - 22 Nov 2023
Cited by 1 | Viewed by 1287
Abstract
Advances in the field of nanobiotechnology are largely due to discoveries in the field of materials. Recent developments in the field of electrochemical biosensors based on transition metal nanomaterials as transducer elements have been beneficial as they possess various functionalities that increase surface [...] Read more.
Advances in the field of nanobiotechnology are largely due to discoveries in the field of materials. Recent developments in the field of electrochemical biosensors based on transition metal nanomaterials as transducer elements have been beneficial as they possess various functionalities that increase surface area and provide well-defined active sites to accommodate elements for rapid detection of biomolecules. In recent years, transition metal dichalcogenides (TMDs) have become the focus of interest in various applications due to their considerable physical, chemical, electronic, and optical properties. It is worth noting that their unique properties can be modulated by defect engineering and morphology control. The resulting multifunctional TMD surfaces have been explored as potential capture probes for the rapid and selective detection of biomolecules. In this review, our primary focus is to delve into the synthesis, properties, design, and development of electrochemical biosensors that are based on transition metal dichalcogenides (TMDs) for the detection of biomolecules. We aim to explore the potential of TMD-based electrochemical biosensors, identify the challenges that need to be overcome, and highlight the opportunities for further future development. Full article
(This article belongs to the Special Issue Novel Materials and Their Sensing Applications)
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21 pages, 9956 KiB  
Review
Recent Advances in Nanomaterials Used for Wearable Electronics
by Minye Yang, Zhilu Ye, Yichong Ren, Mohamed Farhat and Pai-Yen Chen
Micromachines 2023, 14(3), 603; https://doi.org/10.3390/mi14030603 - 5 Mar 2023
Cited by 6 | Viewed by 2735
Abstract
In recent decades, thriving Internet of Things (IoT) technology has had a profound impact on people’s lifestyles through extensive information interaction between humans and intelligent devices. One promising application of IoT is the continuous, real-time monitoring and analysis of body or environmental information [...] Read more.
In recent decades, thriving Internet of Things (IoT) technology has had a profound impact on people’s lifestyles through extensive information interaction between humans and intelligent devices. One promising application of IoT is the continuous, real-time monitoring and analysis of body or environmental information by devices worn on or implanted inside the body. This research area, commonly referred to as wearable electronics or wearables, represents a new and rapidly expanding interdisciplinary field. Wearable electronics are devices with specific electronic functions that must be flexible and stretchable. Various novel materials have been proposed in recent years to meet the technical challenges posed by this field, which exhibit significant potential for use in different wearable applications. This article reviews recent progress in the development of emerging nanomaterial-based wearable electronics, with a specific focus on their flexible substrates, conductors, and transducers. Additionally, we discuss the current state-of-the-art applications of nanomaterial-based wearable electronics and provide an outlook on future research directions in this field. Full article
(This article belongs to the Special Issue Novel Materials and Their Sensing Applications)
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