Photonic and Phononic Crystals: Towards Sensors and Energy Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: closed (10 July 2023) | Viewed by 3262

Special Issue Editor


E-Mail Website
Guest Editor
TH-PPM Group, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62521, Egypt
Interests: phononic crystals; photonic crystals; metamaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The studies of the interaction between the incident waves and the multilayer structures received a significant attention. Such interaction could be helpful in the design and fabrications of many applications in optical, physical, medical and industrial communities. The aims of this issue focus on the applications of periodic material such as photonic and phononic crystals in energy, biomedical, environmental, chemical and physical sensors applications. Owing to the massive developments among cultural, economic and technological, the improvements of new resources and techniques became mandatory to improve our life. Actually, the problems of energy, health and water as well are the main aspects all over the world. However, the limited resources of governments could present the strong difficulty towards the improvements of these requirements.  These new structures can open the window of the above applications and more. The needs of the non-renewable energy within the three past decades through vehicles, industry and electricity have risen with a massive rate due to the population growth and high welfare rates. As a result, many burdens were placed on governments and a solution was needed to rationalize expenditures. Furthermore, these structures could be of interest in the early detection of many diseases such as cancer, sugar and many types of virus based on the photon localization property. Such types of detection provides high accuracy, high stability, high limits of safety and limited cost in comparing with other medical techniques.  

Dr. Ahmed Mehaney
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 submissions that pass pre-check are 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. Micromachines 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 2600 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

  • photonic crystals
  • phononic crystals
  • sensors
  • waves
  • periodic materials
  • band gaps
  • biosensors

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

18 pages, 2219 KiB  
Article
A D-Shaped SPR-Based PCF Sensor with an Extremely High-Amplitude Sensitivity for Measuring the Refractive Index
by Wangyoyo Li, Yu Chen, Jianjie Xu, Menglin Jiang and Hui Zou
Micromachines 2023, 14(7), 1295; https://doi.org/10.3390/mi14071295 - 24 Jun 2023
Cited by 4 | Viewed by 1278
Abstract
In this work, a new D-shaped photonic crystal fibre sensor structure based on surface plasmon resonance (SPR) is purposed for measurement of analyte refractive index (RI). In this design, a silica cylinder is polished into a D-shaped silica material structure with a flattened [...] Read more.
In this work, a new D-shaped photonic crystal fibre sensor structure based on surface plasmon resonance (SPR) is purposed for measurement of analyte refractive index (RI). In this design, a silica cylinder is polished into a D-shaped silica material structure with a flattened surface where two Au nanowires are coated. Some air holes are omitted to form the core mode region. With the implementation of gold nanowires and a core region for the exciting SPR effect with variate physical values, analyte RI can be measured with a wavelength coverage from 850 to 1350nm. The numerical simulation shows the maximum wavelength sensitivity of the purposed design achieves 19,600nm/RIU with an RI coverage from 1.37 to 1.42. Moreover, the sensor has a tremendous amplitude sensitivity and the maximum absolute value is about 2300RIU1. Benefiting from these outstanding performance, the purposed structure can be given priority when it is applied in biomedical detecting and environmental assessment science. Full article
Show Figures

Figure 1

17 pages, 5244 KiB  
Article
One-Dimensional Phononic Crystals: A Simplified Platform for Effective Detection of Heavy Metals in Water with High Sensitivity
by Abdulkarem H. M. Almawgani, Hamza Makhlouf Fathy, Ghassan Ahmed Ali, Hussein A. Elsayed and Ahmed Mehaney
Micromachines 2023, 14(1), 204; https://doi.org/10.3390/mi14010204 - 13 Jan 2023
Cited by 5 | Viewed by 1575
Abstract
Recently, the pollution of fresh water with heavy metals due to technological and industrial breakthroughs has reached record levels. Therefore, monitoring these metals in fresh water has become essentially urgent. Meanwhile, the conventional periodic one-dimensional phononic crystals can provide a novel platform for [...] Read more.
Recently, the pollution of fresh water with heavy metals due to technological and industrial breakthroughs has reached record levels. Therefore, monitoring these metals in fresh water has become essentially urgent. Meanwhile, the conventional periodic one-dimensional phononic crystals can provide a novel platform for detecting the pollution of heavy metals in fresh water with high sensitivity. A simplified design of a defective, one-dimensional phononic crystals (1D-PnC) structure is introduced in this paper. The sensor is designed from a lead-epoxy multilayer with a central defect layer filled with an aqueous solution from cadmium bromide (CdBr2). The formation of a resonant peak through the transmittance spectrum is highly expected. This study primarily aims to monitor and detect the concentration of cadmium bromide in pure water based on shifting the position of this resonant peak. Notably, any change in cadmium bromide concentration can affect the acoustic properties of cadmium bromide directly. The transfer matrix method has been used to calculate the transmission spectra of the incident acoustic wave. The numerical findings are mainly based on the optimization of the cadmium bromide layer thickness, lead layer thickness, epoxy layer thickness, and the number of periods to investigate the most optimum sensor performance. The introduced sensor in this study has provided a remarkably high sensitivity (S = 1904.25 Hz) within a concentration range of (0–10,000 ppm). The proposed sensor provides a quality factor (QF), a resolution, and a figure of merit of 1398.51752, 48,875,750 Hz, and 4.12088 × 10−5 (/ppm), respectively. Accordingly, this sensor can be a potentially robust base for a promising platform to detect small concentrations of heavy metal ions in fresh water. Full article
Show Figures

Figure 1

Back to TopTop