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Special Issue "Smart Functional Surfaces for Chemical Sensing Platforms"

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A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Materials for Chemical Sensing".

Deadline for manuscript submissions: closed (15 July 2022) | Viewed by 8625

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Special Issue Editors

Prof. Dr. Yogendra Kumar Mishra

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Guest Editor

Mads Clausen Institute, SDU NanoSYD, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark
Interests: smart materials; zinc oxide tetrapods; biomaterials; nanocatalysis; green 3D nanotechnology
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Roana de Oliveira Hansen

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Guest Editor

Mads Clausen Institute, University of Southern Denmark, Sønderborg, Denmark
Interests: surface functionalization; smart materials; biosensing; gas sensing; MEMS; electronic noses

Special Issue Information

Dear colleagues,

The remarkable progress in the field of nanotechnology has led to great advances in chemical sensing. Due to their very small dimensions, nanoscopic structures exhibit very high surface-to-volume ratio-dependent extraordinary properties and can be efficiently modified towards multiple functionalities. If these nanostructures are further equipped with appropriate material-dependent functionalities, such as surface charge, chemical stability, etc., they can even be used to bind to selective targets, for example, chemical species, biological molecules, etc. which can open up great avenues in the field of sensing.

In recent years, more and more functional materials have been immobilized on sensing platform surfaces, such as microcantilevers, microfluidic electrodes, magnetic beads, etc. These advances have brought chemical sensing to a new and improved level of selectivity, limit of detection, and accuracy, with a wide range of applications within the medical and chemical industry and environment.

This Special Issue in Chemosensors focuses on the development of novel architectured nanomaterials with high potential for chemical sensing and, accordingly, their applications into various sensing platforms. The Special Issue will cover not only the fundamental material science aspects, but also the practical sensing applications which are achieved by utilizing smart nanostructured materials-based components in these devices.

Prof. Dr. Yogendra Kumar Mishra
Prof. Dr. Roana de Oliveira Hansen
Guest Editors

Manuscript Submission Information

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Keywords

Smart materials
Surface functionalization
Biosensing
Gas sensing
Environmental sensing
MEMS
Sensor applications

Published Papers (4 papers)

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Research

Open AccessArticle

Breath Biomarkers as Disease Indicators: Sensing Techniques Approach for Detecting Breath Gas and COVID-19

Zoltan-Mihály Török

Arthur Frederic Blaser

Kiana Kavianynejad

Carlos Gonzalo Moya Gual de Torrella

Lawrence Nsubuga

Yogendra Kumar Mishra

Horst-Günter Rubahn

and

Roana de Oliveira Hansen

Chemosensors 2022, 10(5), 167; https://doi.org/10.3390/chemosensors10050167 - 29 Apr 2022

Cited by 1 | Viewed by 1752

Abstract

Extensive research shows that there is a close correlation between a disease diagnostic and the patient’s exhale breath gas composition. It has been demonstrated, for example, that patients with a diabetes diagnosis have a certain level of acetone fume in their exhale breath. Actually, symptoms from many other diseases could be easily diagnosed if appropriate and reliable gas sensing technologies are available. The COVID-19 pandemic has created demand for a cheap and quick screening tool for the disease, where breath biomarker screening could be a very promising approach. It has been shown that COVID-19 patients potentially present a simultaneous increase in ethanal (acetaldehyde) and acetone in their exhale breath. In this paper, we explore two different sensing approaches to detect ethanal/acetone, namely by colorimetric markers, which could for example be integrated into facemasks, and by a breathalyzer containing a functionalized quartz crystal microbalance. Both approaches can successfully detect the presence of a biomarker gas on a person’s breath and this could potentially revolutionize the future of healthcare in terms of non-invasive and early-stage detection of various diseases. Full article

(This article belongs to the Special Issue Smart Functional Surfaces for Chemical Sensing Platforms)

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Open AccessArticle

Evaluation of Photosensitive Paper Coatings as Detectors for Instrumentation-Free UV Photometric Analysis Based on Photography-Based Photometry

Tatiana G. Choleva

Afroditi Sfakianaki

Athanasios G. Vlessidis

and

Dimosthenis L. Giokas

Chemosensors 2021, 9(8), 233; https://doi.org/10.3390/chemosensors9080233 - 20 Aug 2021

Cited by 1 | Viewed by 1251

Abstract

Photography-based photometry is a technique developed to perform high throughput UV photometric analysis without instrumental detectors in resource-limited settings. Its principle relies on the illumination of a sample with UV irradiation and then capturing the transmitted irradiation on a photosensitive paper surface. Therefore, the photosensitive surface acts as a detector for the determination of the concentration of analytes in the sample. This work aims to investigate the optimum photosensitive paper coatings for capturing the transmitted UV irradiation. To this end, photosensitive coatings based on silver, iron, and dichromate salts were tested using three assays of pharmaceutical and biochemical interest. The results from both calibrations, using standard solutions and the application in real samples, show that photosensitive coatings based on iron salts provide the best results. Importantly, the detection limits and the linear range of the calibration curves were better than those obtained with standard photometry. Based on these findings, cyanotype green papers, are proposed as optimum detectors for photography-based photometry. This finding simplifies the operation of the technique enabling the fabrication of prototype readers for analytical assays performed in resource limited settings, point-of-need applications or in the field. Full article

(This article belongs to the Special Issue Smart Functional Surfaces for Chemical Sensing Platforms)

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Open AccessArticle

Functionalized Surfaces as a Tool for Virus Sensing: A Demonstration of Human mastadenovirus Detection in Environmental Waters

Juliana Schons Gularte

Roana de Oliveira Hansen

Meriane Demoliner

Jacek Fiutowski

Ana Karolina Antunes Eisen

Fagner Henrique Heldt

Paula Rodrigues de Almeida

Daniela Müller de Quevedo

Horst-Günter Rubahn

and

Fernando Rosado Spilki

Chemosensors 2021, 9(2), 19; https://doi.org/10.3390/chemosensors9020019 - 21 Jan 2021

Cited by 1 | Viewed by 2342

Abstract

The main goal of this study was to apply magnetic bead surface functionalization in the form of immunomagnetic separation (IMS) combined with real-time polymerase chain reaction (qPCR) (IMS-qPCR) to detect Human mastadenovirus species C (HAdV-C) and F (HAdV-F) in water samples. The technique efficiency was compared to a nonfunctionalized method (ultracentrifugation) followed by laboratory detection. Tests were carried out to standardize IMS parameters followed by tests on 15 water samples concentrated by IMS and ultracentrifugation. Microscopic analyses detected a successful beads–antibody attachment. HAdV was detected up to dilutions of 10⁻⁶ by IMS-qPCR, and samples concentrated by IMS were able to infect cell cultures. In water samples, HAdV-C was detected in 60% (monoclonal) and 47% (polyclonal) by IMS-qPCR, while 13% of samples concentrated by ultracentrifugation gave a positive result. HAdV-F was positive in 27% of samples by IMS-qPCR (polyclonal) and ultracentrifugation and 20% by IMS-qPCR (monoclonal). The rate of detection varied from 4.55 × 10² to 5.83 × 10⁶ genomic copies/L for IMS-qPCR and from 2.00 × 10² to 2.11 × 10³ GC/L for ultracentrifugation. IMS showed to be a more effective concentration technique for HAdV than ultracentrifugation, improving the assessment of infectious HAdV in water resources. Full article

(This article belongs to the Special Issue Smart Functional Surfaces for Chemical Sensing Platforms)

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Open AccessCommunication

Nanometre-Scale Visualization of Chemical Parameter Changes by T₁-Weighted ODMR Imaging Using a Fluorescent Nanodiamond

Takahiro Fujisaku

Ryuji Igarashi

and

Masahiro Shirakawa

Chemosensors 2020, 8(3), 68; https://doi.org/10.3390/chemosensors8030068 - 11 Aug 2020

Cited by 1 | Viewed by 2616

Abstract

The dynamics of physical parameters in cells is strongly related to life phenomena; thus, a method to monitor and visualize them on a single-organelle scale would be useful to reveal unknown biological processes. We demonstrate real-time nanometre-scale T₁-weighted imaging using a fluorescent nanodiamond. We explored optically detected magnetic resonance (ODMR) contrast at various values of interval laser pulse (τ), showing that sufficient contrast is obtained by appropriate selection of τ. By this method, we visualized nanometre-scale pH changes using a functionalized nanodiamond whose T₁ has a dependence on pH conditions. Full article

(This article belongs to the Special Issue Smart Functional Surfaces for Chemical Sensing Platforms)

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