Next Article in Journal
Multi-Wavelength Filters of Templated Blue Phase Liquid Crystal
Previous Article in Journal
Recrystallization and Micronization of p-Toluenesulfonamide Using the Rapid Expansion of Supercritical Solution (RESS) Process
Open AccessArticle

Lossy Mode Resonance-Based Glucose Sensor with High-κ Dielectric Film

1
Electronic Engineering Department, Ming Chung University, Taoyuan 33348, Taiwan
2
Biotechnology Department, Ming Chung University, Taoyuan 33348, Taiwan
*
Authors to whom correspondence should be addressed.
Crystals 2019, 9(9), 450; https://doi.org/10.3390/cryst9090450
Received: 27 June 2019 / Revised: 15 August 2019 / Accepted: 27 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue The Application of High-k Dielectric Materials in Solid-State Devices)
In the past, high-κ dielectrics gained much attention because of the constant demand for increasingly smaller semiconductors. At the same time, in the field of optical sensing, high-κ dielectrics are key materials. This study presents the experimental investigations on a lossy mode resonance-based optical planar waveguide (LMROPW) sensor coated with a high-κdielectric of an indium tin oxide (ITO) layer. Two types of sensing structures were fabricated by coating (i) only a single-layer ITO (or bared LMROPW) and (ii) an ITO layer with glucose probes onto the optical planar waveguide (or boronic LMROPW) to detect glucose molecules. The sensing characteristics of these two types of sensors toward the surrounding analyte were determined using different concentrations of glucose solutions. It was found that the bared LMROPW sensor is only suitable for a higher concentration of glucose; the boronic LMROPW sensor with glucose probes on ITO could be applied to a lower-concentration solution to monitor glucose adsorption onto the sensing surface. Furthermore, with the advantages of a simple structure, easy alignment, and suitable production, the LMROPW sensor with a high-κ dielectric surface could be applied in clinical testing and diagnostics. View Full-Text
Keywords: lossy mode resonance; optical planar waveguide; glucose; sensor; ITO lossy mode resonance; optical planar waveguide; glucose; sensor; ITO
Show Figures

Figure 1

MDPI and ACS Style

Lin, Y.-C.; Chen, L.-Y.; Chiu, F.-C. Lossy Mode Resonance-Based Glucose Sensor with High-κ Dielectric Film. Crystals 2019, 9, 450.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop