Special Issue "Selected Papers from Symposium "New Technologies, Intelligent Sensors/Analytics, Cross-linked Sensor Systems and New Application Fields""

A special issue of Chemosensors (ISSN 2227-9040).

Deadline for manuscript submissions: closed (28 February 2018)

Special Issue Editors

Guest Editor
Dr. Hubert Keller

Karlsruhe Institute of Technology, Campus North, Institute for Applied Informatics (IAI), Eggenstein-Leopoldshafen, Germany
Website | E-Mail
Interests: real time systems; software engineering; machine intelligence; intelligent sensor systems and nets; safe and secure software including process control
Guest Editor
Mr. Rolf Seifert

Karlsruhe Institute of Technology, Campus North, Institute for Applied Informatics (IAI), Eggenstein-Leopoldshafen, Germany
Website | E-Mail
Interests: gas sensors; mathematical calibration models; calibration and evaluation procedures
Guest Editor
Dr. Sina Keller

Karlsruhe Institute of Technology (KIT), Campus South, Institute of Photogrammetry and Remote Sensing (IPF), 76128 Karlsruhe, Germany
Website | E-Mail
Interests: model based measurement; remote sensing; vulnerability of critical infrastructure

Special Issue Information

Dear Colleagues,

There will be a growing need in the future for advanced sensor systems to catch and process information concerning potential hazards, chemical and biochemical processes and situations and for using resources more efficiently. Additionally-important are the design and security of highly interconnected sensor systems.

This Special Issue on “New Technologies, Intelligent Sensors/Analytics, Cross-Linked Sensor Systems and New Application Fields” will include the latest developments and advances in this area. The purpose of this Special Issue is to examine the state-of-the-art of this vast field. The main focus is based on themes, which are used for the development of advanced sensor systems to identify and analyze chemical and biochemical substances in gas, air, water and food, to realize critical situations, and, last but not least, to use resources in an efficient and environmentally- and climate-friendly way.

Dr. Hubert Keller
Mr. Rolf Seifert
Dr. Sina Keller
Guest Editors

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 papers will be 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. Chemosensors is an international peer-reviewed open access quarterly 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 350 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

  • Micro systems
  • Chemical sensors
  • Gas sensors
  • Calorimetric catalytic type sensors
  • Chip layout
  • Control and feedback control systems
  • Electro chemical phosphate sensor technology
  • Electro chemical Aptamer sensor
  • Fluorescent Chemo sensors
  • Gas analysis
  • Optical spectroscopy
  • Acoustical biosensors
  • Non-invasive micro acoustical on-line sensor

Published Papers (3 papers)

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Research

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Open AccessFeature PaperArticle Miniaturized Single Chip Arrangement of a Wheatstone Bridge Based Calorimetric Gas Sensor
Chemosensors 2018, 6(2), 22; https://doi.org/10.3390/chemosensors6020022
Received: 2 April 2018 / Revised: 14 May 2018 / Accepted: 16 May 2018 / Published: 19 May 2018
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Abstract
The design and fabrication of a miniaturized calorimetric-type gas sensor in a single chip arrangement is presented. Active and passive thin-film Pt meanders are integrated in a single platform (7 × 7 mm2) together with a temperature sensor and a thin-film
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The design and fabrication of a miniaturized calorimetric-type gas sensor in a single chip arrangement is presented. Active and passive thin-film Pt meanders are integrated in a single platform (7 × 7 mm2) together with a temperature sensor and a thin-film microheater at the reverse side. Active meanders are covered by a porous Al2O3/2 wt % Pt thick-film layer. The selection of substrate, position of meanders, and active catalysts (especially their concentration) play a crucial role in directing sensor performance. The presented results show that the sensor signal (Wheatstone bridge voltage) is generated by diffusion-limited exothermic reactions which point towards catalytically enhanced combustion reactions mainly inside the active porous layer. By extrapolation of the linear sensitivity curves, the sensitivity limit was estimated to be 4 ppm for propene and to be 18 ppm for CO. In general, the one-chip-sensing concept has high potential to be used as a gas sensor for analysis of combustible gases; however, further optimization of the meander design and the catalyst material as well as investigations of the sensing behavior under varying ambient temperatures are necessary before such applications shall be considered. Full article
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Open AccessFeature PaperArticle Simultaneous Analysis of Sensor Data for Breath Control in Respiratory Air
Chemosensors 2018, 6(2), 15; https://doi.org/10.3390/chemosensors6020015
Received: 12 February 2018 / Revised: 20 March 2018 / Accepted: 29 March 2018 / Published: 3 April 2018
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Abstract
There is a broad field of applications of breath monitoring in human health care, medical applications and alcohol control. In this report, an innovative mobile sensor system for breath control in respiratory air called AGaMon will be introduced. The sensor system is able
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There is a broad field of applications of breath monitoring in human health care, medical applications and alcohol control. In this report, an innovative mobile sensor system for breath control in respiratory air called AGaMon will be introduced. The sensor system is able to recognize a multitude of different gases like ethanol (which is the leading component of alcoholic drinks), H2S (which is the leading component for halitosis), H2 (which is the leading component for dyspepsia and food intolerance), NO (which is the leading component for asthma) or acetone (which is the leading component for diabetes), thus ,covering almost all significant aspects. An innovative calibration and evaluation procedure called SimPlus was developed which is able to evaluate the sensor data simultaneously. That means, SimPlus is able to identify the samples simultaneously; for example, whether the measured sample is ethanol or another substance under consideration. Furthermore, SimPlus is able to determine the concentration of the identified sample. This will be demonstrated in this report for the application of ethanol, H2, acetone and the binary mixture ethanol-H2. It has been shown that SimPlus could identify the investigated gases and volatile organic compounds (VOCs) very well and that the relative analysis errors were smaller than 10% in all considered applications. Full article
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Review

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Open AccessFeature PaperReview Colorimetric Materials for Fire Gas Detection—A Review
Chemosensors 2018, 6(2), 14; https://doi.org/10.3390/chemosensors6020014
Received: 28 February 2018 / Revised: 23 March 2018 / Accepted: 27 March 2018 / Published: 29 March 2018
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Abstract
The damage caused by outbreaks of fire continues to be enormous despite ongoing improvements in fire detection and fighting. Therefore, the detection of fires at the earliest possible stage is essential. The latest developments in fire detection devices include the addition of carbon
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The damage caused by outbreaks of fire continues to be enormous despite ongoing improvements in fire detection and fighting. Therefore, the detection of fires at the earliest possible stage is essential. The latest developments in fire detection devices include the addition of carbon monoxide (CO) or temperature sensors into the widespread smoke detectors, but also alternative solutions are searched for. Advantageous is the direct detection of the most relevant fire gases CO and nitrogen dioxide (NO2), because they are produced very early in a developing fire. A sensitive, selective, and low-cost method to detect these gases is the use of colorimetric materials combined with a compact optical readout. In this review, we take account of recent developments in this research field and provide a comprehensive overview on suitable materials for CO and NO2 detection in fire gas sensing and first steps towards novel fire gas detectors. Full article
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