Special Issue "Chemical Microsensors"

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

Deadline for manuscript submissions: closed (31 July 2017)

Special Issue Editor

Guest Editor
Prof. Dr. Ha Duong Ngo

1. Hochschule für Technik und Wirtschaft Berlin, University of Applied Sciences, Treskowallee 8, 10318 Berlin, Germany
2. Fraunhofer Institute for Reliability and Microintegration IZM, Department Wafer Level Integration, Group Microsensors Technology, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
Website | E-Mail
Interests: microsystems; piezoresistive sensor; sensor for harsh environments; SOI and SiC-based sensor; accelerometers; gas sensor; design and simulation of microsystems; graphene; graphene on silicon carbide (SiC); quantum metrology; environmental sensors; room temperature quantum devices; quantum transport phenomena in room temperature, material research; 2d materials, electrochemical sensors and biosensors; nanocale mechanical sensors

Special Issue Information

Dear Colleagues,

The demand for electrical detection of biomolecules and chemical detection of nanoscale size materials has been increasing in the last few years. These advances will influence various fields, ranging from life sciences, health care, defense, agriculture, and others. Scaling down and reaching sensitive resolutions of such sensing systems, from mesoscopic and microscale into the nanoscale, is still a challenging topic. Already, in the last few decades, ultra-sensitive chemical nanosensors systems have been emerging and revolutionizing the industrial world, as well as probing basic concepts of chemistry. Identifying and incorporating candidates, such as carbon nanotubes, graphene, silicon carbide, titania nanowires, organic polymers, composites, and other 1d and 2d materials, which couple electronic and chemical properties is mandatory to reach the development of systems of multifunctional constituents to ensure actuation and sensory in the desired resolution. Furthermore, different methods of attaching candidate molecules, to attach those candidate materials covalently or non-covalently, are needed in order to utilize their specificity to different frequencies, chemicals, gases, or liquids.

The purpose of this Special Issue on chemical sensors is to scrutinize the state-of-the-art of this vast field, attempt to build a roadmap, provide useful guidelines for developing platforms of such scales, and focus on future directions of this field by utilizing mainly (but not only) nanowires, nanotubes, thin film polymers, silicon carbide, graphene, and other 1d and 2d materials for different applications such as molecular sensors, optical sensors, nanopore sensors for biological or chemical detection,  gas sensors, electronic “nose”, electronic “tongue” and similar systems.

Prof. Dr. Ha Duong Ngo
Guest Editor

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

  • Microelectromechanical system
  • Chemosensors
  • Chemical Sensors
  • Nanomechanics
  • BioMEMS
  • BioSensors
  • 2d materials
  • 1d materials
  • Electrochemical sensors
  • Gas sensors
  • Environmental Sensors
  • Life Science
  • Defense
  • E-nose
  • E-tongue

Published Papers (1 paper)

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Research

Open AccessArticle Ultra-Sensitive Optical Resonator for Organic Solvents Detection Based on Whispering Gallery Modes
Chemosensors 2017, 5(2), 19; doi:10.3390/chemosensors5020019
Received: 23 March 2017 / Revised: 13 May 2017 / Accepted: 1 June 2017 / Published: 5 June 2017
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Abstract
In this paper, a novel technique using an ultra-sensitive optical resonator based on whispering gallery modes (WGM) is proposed to detect the diffusion of organic solvents. The sensor configuration is a micro-cavity made of polymeric material. When the solvent starts to diffuse, the
[...] Read more.
In this paper, a novel technique using an ultra-sensitive optical resonator based on whispering gallery modes (WGM) is proposed to detect the diffusion of organic solvents. The sensor configuration is a micro-cavity made of polymeric material. When the solvent starts to diffuse, the polymer of the cavity starts to swallow that solvent. A swollen elastomer is in fact a solution, except that its mechanical response is now elastic rather than viscous. As solvents fill the network, chains are extended. In turn, that leads to the change of the morphology and mechanical properties of the sensing element. These changes could be measured by tracking the WGM shifts. Several experiments were carried out to measure that swelling force. Ethanol and methanol are used in this paper as candidates to study their driving force of diffusion (concentration gradient) on the cavity. Additionally, this sensing design can be used for biological sensing application. Breath diagnosis can use this configuration in diabetes diagnosis since a solvent like acetone concentration in human breath leads to a quick, convenient, accurate, and painless breath diagnosis of diabetes. The optical resonator results are verified through two different analyses: theoretical and experimental modeling. These micro-optical cavities have been examined using preliminary experiments to fully investigate their response and to verify the numerical analysis. Results show that the proposed sensor yields sensitivity for the driving force of diffusion (concentration gradient) (9.405 × 1013 pm/N) with a measurement precision of ~3.6 fN. Full article
(This article belongs to the Special Issue Chemical Microsensors)
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