Nanomaterials for Chemical Sensors 2021-2022
A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Sensor Materials".
Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 514
Special Issue Editor
Interests: physicochemical basis of sensors; chemical sensors; physical sensors; metrology; supramolecular chemistry; molecular recognition; molecular imprinting; anisotropic phases
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The needle eye in developing sensors is the design of innovative materials. Thus, this Special Issue is focused on the detection process by coatings. The most innovative trends in this field were initiated by nanotechnology in the last few decades. This strategy meets the challenges of modern chemical sensors: miniaturization, fast responses, reversibility, low energy consumption, and low cost. All these sensor materials have to be combined with suitable transducers such as mass sensitive devices, resistive, capacitive, electrochemical, and optical detection methods. Measurements are possible both in the gaseous and liquid phase.
In principle, nearly all modern chemical sensors are designed in nanodimensions. This is especially true for the height of chemical coating. Preferably, the materials are organized in nanoparticles. In this case, diffusion occurs in three dimensions, which leads to fast response times. These particles may consist of both organic and inorganic materials. The sensor effects are improved by adapting the polarity of the adsorption/absorption material to the analyte. Furthermore, selectivity is achieved by molecular recognition via supramolecular chemistry. This can be realized, e.g., by molecular imprinting, which leads to highly robust materials. Complex analytes in solution can also be recognized by biomolecules such as aptamers.
Thus, selectivity and high sensitivity can be achieved by molecular interactions in a nanosystem, which leads to fast responses and reversibility.
Prof. Dr. Franz L. Dickert
Guest Editor
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