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Novel Sensors Based on Nanotechnology and Their Application
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Novel Sensors Based on Nanotechnology and Their Application

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Nanosensors".

Deadline for manuscript submissions: closed (30 June 2024) | Viewed by 2987

Special Issue Editor

Prof. Dr. Lili Xing

E-Mail Website
Guest Editor
School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, China
Interests: biosensors; chemical sensors; nanomaterials; self-powered sensing system; electronic skin
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Sensors based on nanotechnology leverage the distinctive properties of nanostructures to detect and monitor various substances, aiming to develop highly sensitive, selective, and rapid-responsive sensors through the utilization of nanomaterials and nanostructures. These sensors possess the capability to detect and monitor diverse physical and chemical parameters in specific environments. Research in this domain encompasses the fabrication of nanomaterials and nanostructures, sensor design and construction, sensing mechanisms and signal conversion, as well as application development and performance evaluation. This area of research covers various types of sensors, including physical/chemical sensors, biosensors, bionic sensors, flexible sensors, wearable/implantable sensors, sensing systems, and sensor networks. Their applications span across areas such as environmental monitoring, biomedical applications, food safety, sports and fitness, the Internet of Things (IoTs), etc.

Prof. Dr. Lili Xing
Guest Editor

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 short 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. Sensors is an international peer-reviewed open access semimonthly 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

  • physical/chemical sensors
  • biosensors
  • bionic sensors
  • flexible sensors
  • wearable/implantable sensors
  • self-powered sensing systems
  • wireless sensor networks
  • nanomaterials
  • nanostructure

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Published Papers (2 papers)

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Research

14 pages, 3011 KiB  
Article
A Self-Powered Lactate Sensor Based on the Piezoelectric Effect for Assessing Tumor Development
by Jiayan Lin, Pengcheng Yuan, Rui Lin, Xinyu Xue, Meihua Chen and Lili Xing
Sensors 2024, 24(7), 2161; https://doi.org/10.3390/s24072161 - 28 Mar 2024
Cited by 2 | Viewed by 1292
Abstract
The build-up of lactate in solid tumors stands as a crucial and early occurrence in malignancy development, and the concentration of lactate in the tumor microenvironment may be a more sensitive indicator for analyzing primary tumors. In this study, we designed a self-powered [...] Read more.
The build-up of lactate in solid tumors stands as a crucial and early occurrence in malignancy development, and the concentration of lactate in the tumor microenvironment may be a more sensitive indicator for analyzing primary tumors. In this study, we designed a self-powered lactate sensor for the rapid analysis of tumor samples, utilizing the coupling between the piezoelectric effect and enzymatic reaction. This lactate sensor is fabricated using a ZnO nanowire array modified with lactate oxidase (LOx). The sensing process does not require an external power source or batteries. The device can directly output electric signals containing lactate concentration information when subjected to external forces. The lactate concentration detection upper limit of the sensor is at least 27 mM, with a limit of detection (LOD) of approximately 1.3 mM and a response time of around 10 s. This study innovatively applied self-powered technology to the in situ detection of the tumor microenvironment and used the results to estimate the growth period of the primary tumor. The availability of this application has been confirmed through biological experiments. Furthermore, the sensor data generated by the device offer valuable insights for evaluating the likelihood of remote tumor metastasis. This study may expand the research scope of self-powered technology in the field of medical diagnosis and offer a novel perspective on cancer diagnosis. Full article
(This article belongs to the Special Issue Novel Sensors Based on Nanotechnology and Their Application)
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10 pages, 2564 KiB  
Article
Stretchable Nanofiber-Based Felt as a String Electrode for Potential Use in Wearable Glucose Biosensors
by Bianca Seufert, Sylvia Thomas and Arash Takshi
Sensors 2024, 24(4), 1283; https://doi.org/10.3390/s24041283 - 17 Feb 2024
Cited by 4 | Viewed by 1307
Abstract
Nanofiber technology is leading the revolution of wearable technology and provides a unique capability to fabricate smart textiles. With the novel fabrication technique of electrospinning, nanofibers can be fabricated and then manufactured into a durable conductive string for the application of smart textiles. [...] Read more.
Nanofiber technology is leading the revolution of wearable technology and provides a unique capability to fabricate smart textiles. With the novel fabrication technique of electrospinning, nanofibers can be fabricated and then manufactured into a durable conductive string for the application of smart textiles. This paper presents an electrospun nanofiber mesh-based (NF-Felt) string electrode with a conducting polymer coating for an electrochemical enzymatic glucose sensor. The surface area of a nanofiber matrix is a key physical property for enhanced glucose oxidase (GOx) enzyme binding for the development of an electrochemical biosensor. A morphological characterization of the NF-Felt string electrode was performed using scanning electron microscopy (SEM) and compared with a commercially available cotton–polyester (Cot-Pol) string coated with the same conducting polymer. The results from stress–strain testing demonstrated high stretchability of the NF-Felt string. Also, the electrochemical characterization results showed that the NF-Felt string electrode was able to detect a glucose concentration in the range between 0.0 mM and 30.0 mM with a sensitivity of 37.4 μA/mM·g and a detection limit of 3.31 mM. Overall, with better electrochemical performance and incredible flexibility, the NF-Felt-based string electrode is potentially more suitable for designing wearable biosensors for the detection of glucose in sweat. Full article
(This article belongs to the Special Issue Novel Sensors Based on Nanotechnology and Their Application)
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