Journal Menu► ▼ Journal Menu
Journal Browser► ▼ Journal Browser
Special Issue "Metal Oxide Based Sensors"
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".
Deadline for manuscript submissions: closed (30 June 2020) | Viewed by 11062
Special Issue Editor
Interests: atomic layer deposition; photocatalysis; electrospinning; nanomaterials; sensors; thin films
Special Issues, Collections and Topics in MDPI journals
Special Issue in Nanomaterials: Functional Nanomaterials by Electrospinning
Special Issue in Nanomaterials: Boron Nitride Nanostructures
Special Issue in Materials: Advances of Atomic Layer Deposition Synthetic Nanostructures
Special Issue in Materials: Nanostructured Membranes for Health, Environment and Renewable Energy
Special Issue in Sensors: Optical Fiber Biosensors
Special Issue in Nanomaterials: Nanostructured Sensors
Special Issue in Nanomaterials: Metallic Oxide Nanostructures
Special Issue in Nanomaterials: 10th Anniversary of Nanomaterials—Recent Advances in Nanofabrication and Nanomanufacturing
Special Issue in Materials: Nanostructured Materials for Health, Environment and Renewable Energy
Special Issue in Nanomaterials: Current Review in Nanofabrication and Nanomanufacturing
Special Issue in Nanomanufacturing: Current Review in Nanofabrication and Nanomanufacturing
Special Issue in Catalysts: Recent Trends in Electrocatalysis and Photocatalysis of Nanostructured Materials for Energy Storage and Conversion
Special Issue in Sensors: 2D Materials for Sensor and Biosensor Applications
Special Issue in Materials: Atomic Layer Deposition: From Thin Films to Nanostructured Materials
Topics: Nanomaterials and Their Composites for Environmental Remediation
Special Issue Information
Among the different types of sensors, semiconducting metal oxides (SMOx) have attracted attention due to their outstanding properties. The specific mechanisms of sensing involved in SMOx are complex and not fully understood (e.g., adsorption and chemisorption steps, charge transfers, oxygen migration). The sensor’s functional material surface properties such as the (nano)structure, morphology, and crystallinity are crucial for its final performances. The main SMOx sensors’ parameters are the sensitivity (measured variation of the signal as a function of a variation of molecule concentration), the selectivity (capacity to measure individual molecules within a mixture), the time interval needed for measurement (and of recovery), and the stability of characteristics over time.
Three challenges drive the very active research on the topic:
- How to improve the sensor sensitivity? For example, the research carried out on this topic includes the synthesis of highly porous or nanostructured materials to maximize the effective surface and therefore the number of adsorption sites.
- How to obtain the required selectivity? SMOx sensor sensitivity is intrinsically poor; therefore, a great deal of effort has been devoted to compose “sensor arrays” with different functional properties whose responses are treated comparatively.
- How to miniaturize the sensors? One crucial aim is to reduce the energy consumption of the sensors in order to include them in small batteries. A promising route to achieve this purpose is to replace the usual thermal activation by UV irradiation, which would also enable the measurement of explosive materials. Another objective related to miniaturization is to make them more easily transportable, so as to integrate new functionalities in devices such as smartphones.
The aim of this Special Issue is to assemble high-quality contribution on the synthesis, modification, characterization, and the application of semiconducting metal oxides (SMOx). It will deal with the design of different functional nanostructures (e.g., thin films, nanoparticles, nanowires, and nanofibers) based on different metal oxides (MOx) (e.g., SnO2, TiO2, Al2O3, NiO, WO3, CuO, ZnO, LiNbO3, etc.) with controlled chemical composition (e.g., doping and mixed multilayers (nano-laminates)) and carbon-based MOx (MOx-C using carbon nanotubes (CNTs) and graphene), and to functionalize/modify the surfaces with noble metal particles or other nanostructures and to fabricate p–n hetero-junctions (HJs). The relation between these parameters and the structural, electrical, and optical properties of the MOx, HJ, and MOx-C nanostructures, as well as their sensing capabilities, will be explored.
All new concepts targeting the optimization of sensor parameters by tailoring the structural properties and surface chemistry of the nanostructures in order to achieve (i) increased sensitivity, (ii) higher selectivity, (iii) lower operation temperature, and (iv) enhanced stability over time will be investigated. The final target is to provide new concepts allowing for the integration of MOx-, HJ-, and MOx-C-based sensors with novel industrial microelectronic sensor platforms in low-cost manufacturing processes.
Dr. Mikhael Bechelany
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 2400 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.
- semiconducting metal oxides (SMOx)
- thin film
- nanostructured materials
- porous materials