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Nanophotonic Sensors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (30 September 2019) | Viewed by 4425

Special Issue Editors


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Guest Editor
Centre for Industrial and Engineering Optics/School of Physics and Clinical & Optometric Sciences, College of Science and Health, Technological University Dublin, Dublin, Ireland
Interests: functionalised holographic recording materials (photopolymer nanocomposites, self-processing photopolymers, azo-dye-containing polymers); novel methods for fabrication of holograms, and their applications in holographic sensing, holographic data storage, optical micro patterning and micromanipulation, and holographic actuators for smart device design
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Guest Editor
School of Engineering, University of Birmingham, Birmingham, UK
Interests: nanophotonics; laser ablation; wearable sensors

Special Issue Information

Dear Colleagues,

The development of nanophotonic sensors capable of changing their optical properties as a result of recognition and detection of environmental pollutants, biologically relevant analytes, chemical substances, as well as detection of externally applied fields (i.e., electric, magnetic, electromagnetic fields) and temperature gradients have attracted considerable interest in recent years. Among various sensing techniques, nanophotonic sensors using a variation of the properties of nanophotonic structures are receiving increasing attention because of their capability for multiplexing, competitive sensitivity, versatility in obtaining diverse information in situ, and fabrication compatible with current industrial approaches. This Special Issue aims at presenting reports on recent developments in the development and applications of nanophotonic sensors.

Prof. Izabela Naydenova
Dr. Haider Butt
Guest Editors

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Keywords

  • nanophotonics;
  • nanophotonic structures for sensing;
  • nanoparticle-based sensors;
  • waveguide-based nanophotonic sensors;
  • photonic crystal sensors;
  • holographic sensors;
  • graphene nanophotonic sensors;
  • nanoplasmonic sensing and detection

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Published Papers (1 paper)

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Research

15 pages, 6786 KiB  
Article
Modified Surface Relief Layer Created by Holographic Lithography: Application to Selective Sodium and Potassium Sensing
by Sabad-E Gul, Luke O’Neill, John Cassidy and Izabela Naydenova
Sensors 2019, 19(5), 1026; https://doi.org/10.3390/s19051026 - 28 Feb 2019
Cited by 5 | Viewed by 3506
Abstract
Point-of-care diagnostics will rely upon the development of low-cost, noncomplex, and easily integrated systems in order to examine biological samples such as blood and urine obtained from the patient. The development of metal ion sensors is a subject of significant relevance for physiological [...] Read more.
Point-of-care diagnostics will rely upon the development of low-cost, noncomplex, and easily integrated systems in order to examine biological samples such as blood and urine obtained from the patient. The development of metal ion sensors is a subject of significant relevance for physiological samples. The level of different blood electrolytes, mainly H+, Na+, K+ and Cl is considerably used to monitor irregular physiologies. The particular challenge in biosensing, and in fact for any other sensor, is signal differentiation between non-specifically bound material and the specific detecting of the target molecule/ion. The biosensors described in this paper are fabricated by a holographic recording of surface relief structures in a photopolymer material. The surface structures are modified by coating with either dibenzo-18-crown-6 (DC) or tetraethyl 4-tert-butylcalix[4]arene (TBC), which are embedded in a polymer matrix. Interrogation of these structures by light allows indirect measurement of the concentration of the analyte. The influence of polymer matrices with different porosities, plasticised polyvinyl chloride (PVC) and a sol-gel matrix, on the performance of the sensors for detection of K+ and Na+ is examined. Here we demonstrate a proof of concept that by using a matrix with higher porosity one can increase the sensitivity of the sensor. The results showed that the DC sensing layer provides a selective response to K+ over Na+ and the TBC modified grating is more responsive to Na+ over K+. The sensor responds to K+ and Na+ within the physiological concentration ranges. Full article
(This article belongs to the Special Issue Nanophotonic Sensors)
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