Special Issue "Acoustic Wave Sensors for Biosensing Applications"

A special issue of Biosensors (ISSN 2079-6374).

Deadline for manuscript submissions: closed (30 October 2018).

Special Issue Editor

Prof. Uwe Schnakenberg
Website
Guest Editor
RWTH Aachen University, Institute of Materials in Electrical Engineering 1, Aachen, Germany
Interests: Microfluidics coupled with sensors

Special Issue Information

Dear Colleagues,

Acoustic wave devices are well known for mass-sensitive sensor applications. Bulk-acoustic-wave (BAW) in quartz crystal microbalance, thin film bulk acoustic wave resonators (FBAR) as well as surface acoustic waves (SAW) configurations are in use. These devices can beneficially be used for biosensing applications, where biochemically-evoked binding processes on surfaces are detected in liquid environments, typically in combination with appropriate microfluidic devices. Hybridization, immobilization of biomarkers or cells are the focus of research.

For this Special Issue, we seek unique research and development efforts focusing on novel acoustic wave sensor device developments for biosensing applications. Figures of merit, such as sensitivity, resolution and detection limit are of interest. To gain sensor information, we are interested in acoustic wave sensor devices coupled with other transducer principles, e.g., electrochemical or optical approaches. The challenging and appropriate bio-functionalization of the sensor surface to achieve selective immobilization reactions can be addressed.

The Special issue will expand the scientific frontier of this very important and significant endeavor.

Prof. Uwe Schnakenberg
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. Biosensors is an international peer-reviewed open access monthly 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 1000 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.

Published Papers (1 paper)

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Research

Open AccessCommunication
A Theoretical Study of Surface Mode Propagation with a Guiding Layer of GaN/Sapphire Hetero-Structure in Liquid Medium
Biosensors 2018, 8(4), 124; https://doi.org/10.3390/bios8040124 - 05 Dec 2018
Abstract
Gallium Nitride (GaN) is considered as the second most popular semiconductor material in industry after silicon. This is due to its wide applications encompassing Light Emitting Diode (LED) and power electronics. In addition, its piezoelectric properties are fascinating to be explored as electromechanical [...] Read more.
Gallium Nitride (GaN) is considered as the second most popular semiconductor material in industry after silicon. This is due to its wide applications encompassing Light Emitting Diode (LED) and power electronics. In addition, its piezoelectric properties are fascinating to be explored as electromechanical material for the development of diverse microelectromechanical systems (MEMS) application. In this article, we conducted a theoretical study concerning surface mode propagation, especially Rayleigh and Sezawa mode in the layered GaN/sapphire structure with the presence of various guiding layers. It is demonstrated that the increase in thickness of guiding layer will decrease the phase velocities of surface mode depending on the material properties of the layer. In addition, the Q-factor value indicating the resonance properties of surface mode appeared to be affected with the presence of fluid domain, particularly in the Rayleigh mode. Meanwhile, the peak for Sezawa mode shows the highest Q factor and is not altered by the presence of fluid. Based on these theoretical results using the finite element method, it could contribute to the development of a GaN-based device to generate surface acoustic wave, especially in Sezawa mode which could be useful in acoustophoresis, lab on-chip and microfluidics applications. Full article
(This article belongs to the Special Issue Acoustic Wave Sensors for Biosensing Applications)
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