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Editorial Board Members' Collection Series: Biosensors Based on Nanotechnology: Fabrication, Structure and Application

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

Deadline for manuscript submissions: closed (25 April 2024) | Viewed by 3244

Special Issue Editors


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Guest Editor
Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
Interests: electrochemitry; nanotechnology; atomic force microscopy; biosensors; sensors
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
275 Wilmore Laboratories, Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA
Interests: nano-biosensors; chemical sensors and biosensors for food safety; biomedical applications; single molecule sensing; nano-biomaterials and multi-functional biointerfaces; chem- and bio-sensors for air and water quality control; kinetic (enzyme-based)- and affinity-based biosensors; cell- and cell culture- based biosensors

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Guest Editor
Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8182, Université Paris Saclay, 17 Avenue des Sciences, 91400 Orsay, France
Interests: biosensor; biochips; electrochemistry; material chemistry; analytical chemistry; nanotechnology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biosensors are becoming indispensable in a variety of fields, ranging from medical care to the food and pharmacological industry and quality control in environmental, agriculture, marine and military sectors. A biosensor is a device that uses a biological recognition element (proteins, nucleic acids, immunosystems, aptamers, tissues, whole cells or organelles) immobilised onto a transducer to detect a target analyte, usually by electrical, thermal or optical signals. Advances in nanotechnology have led to the development of many nanostructured materials, including carbon nanotubes, carbon nanofibers, graphene-related materials, fullerenes, metal nanoparticles, quantum dots, polymers, nanocomposites and dendrimers. Nanotechnology also allows the implementation of biosensors in various forms, such as wearable, miniaturised arrays, and integrated in microfluidic devices. Thus, nanotechnology-based biosensors based on transducer miniaturisation and/or modification by nanomaterials emerge as promising next-generation analytical devices with enhanced biocompatibility and stability, improved selectivity, sensitivity and reproducibility, and easy miniaturization and automation.

This Special Issue welcomes contributions devoted to the design, nanotechnological fabrication, characterization, and application of biosensors based on nanostructured materials, aiming to discuss the issues, approaches, and challenges of this interdisciplinary frontier between biological detection and material science. This will stimulate a broader interest in the development of nanotechnology-based biosensors applied to biomedical diagnosis, point-of-care monitoring of treatment and disease progression, biomedical research and drug discovery, food control, chemical analysis, forensics, and environmental monitoring.

Dr. Ana-Maria Chiorcea-Paquim
Prof. Dr. Aleksandr Simonian
Dr. Hafsa Korri-Youssoufi
Guest Editors

Manuscript Submission Information

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Keywords

  • biosensors
  • nanomaterials
  • nanotechnology
  • nanosensors
  • nanoelectronics
  • bioelectronics
  • nanobiology
  • nanochemistry
  • nanomedicine
  • nanotoxicology

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Published Papers (2 papers)

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Research

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14 pages, 4633 KiB  
Article
Using the Photo–Piezoelectric Effect of AuPt@BaTiO3 Oxidase Mimetics for Colorimetric Detection of GSH in Serum
by Yiquan Liao, Yichang He, Bin Zhang, Ye Ma, Ruiqi Xu, Minggang Zhao and Hongzhi Cui
Sensors 2024, 24(7), 2242; https://doi.org/10.3390/s24072242 - 31 Mar 2024
Viewed by 976
Abstract
Nanozymes possess major advantages in catalysis and biosensing compared with natural nanozymes. In this study, the AuPt@BaTiO3 bimetallic alloy Schottky junction is prepared to act as oxidase mimetics, and its photo−piezoelectric effect is investigated. The synergy between the photo−piezoelectric effect and the [...] Read more.
Nanozymes possess major advantages in catalysis and biosensing compared with natural nanozymes. In this study, the AuPt@BaTiO3 bimetallic alloy Schottky junction is prepared to act as oxidase mimetics, and its photo−piezoelectric effect is investigated. The synergy between the photo−piezoelectric effect and the local surface plasmon resonance enhances the directional migration and separation of photogenerated electrons, as well as hot electrons induced by the AuPt bimetallic alloy. This synergy significantly improves the oxidase−like activity. A GSH colorimetric detection platform is developed based on this fading principle. Leveraging the photo−piezoelectric effect allows for highly sensitive detection with a low detection limit (0.225 μM) and reduces the detection time from 10 min to 3 min. The high recovery rate (ranging from 99.91% to 101.8%) in actual serum detection suggests promising potential for practical applications. The development of bimetallic alloy heterojunctions presents new opportunities for creating efficient nanozymes. Full article
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Review

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20 pages, 2067 KiB  
Review
Strategies for Bacterial Eradication from Human and Animal Semen Samples: Current Options and Future Alternatives
by Michal Ďuračka, Filip Benko, Milan Chňapek and Eva Tvrdá
Sensors 2023, 23(15), 6978; https://doi.org/10.3390/s23156978 - 6 Aug 2023
Cited by 3 | Viewed by 1763
Abstract
The primary role of semen processing and preservation is to maintain a high proportion of structurally and functionally competent and mature spermatozoa, that may be used for the purposes of artificial reproduction when needed, whilst minimizing any potential causes of sperm deterioration during [...] Read more.
The primary role of semen processing and preservation is to maintain a high proportion of structurally and functionally competent and mature spermatozoa, that may be used for the purposes of artificial reproduction when needed, whilst minimizing any potential causes of sperm deterioration during ex vivo semen handling. Out of a multitude of variables determining the success of sperm preservation, bacterial contamination has been acknowledged with an increased interest because of its often unpredictable and complex effects on semen quality. Whilst antibiotics are usually the most straight-forward option to prevent the bacterial contamination of semen, antimicrobial resistance has become a serious threat requiring widespread attention. As such, besides discussing the consequences of bacteriospermia on the sperm vitality and the risks of antibiotic overuse in andrology, this paper summarizes the currently available evidence on alternative strategies to prevent bacterial contamination of semen prior to, during, and following sperm processing, selection, and preservation. Alternative antibacterial supplements are reviewed, and emphasis is given to modern methods of sperm selection that may be combined by the physical removal of bacteria prior to sperm preservation or by use in assisted reproductive technologies. Full article
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