Photonic and Phononic Crystals
A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".
Deadline for manuscript submissions: closed (1 September 2022) | Viewed by 5894
Special Issue Editors
Interests: photonic crystals; phononic crystals; mesoscopic systems; metamaterials
Interests: nanostructured materials; optical materials and photonics; biomedical applications of nanostructured and optical materials; biophotonics; laser cavities; materials for radiation shielding and protection
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
In recent decades, photonic and phononic structures have attracted worldwide research attention due to their unique electromagnetic and mechanical properties and applications in the field of medical diagnostic, engineering optics, food safety testing, biochemical analysis, and environmental monitoring. These structures provide a powerful platform for designing photonic and phononic devices which can find a diverse range of optical, acoustical, and technological applications owing to their tremendous ability to manipulate different parameters to electromagnetic and mechanical waves.
Photonic crystal (PhC) is a medium that consists of a periodic modulation of the refractive index between its constituents, often creating bandgaps where the propagation of electromagnetic waves is prohibited. The presence of photonic band gaps in periodic crystal slabs for directed modes provides new possibilities for light modulation in integrated photonic devices, and the photonic bandgap presence due to a multiple Bragg scattering of the propagated EM wave at the interfaces means that both photonic and phononic crystals have found many applications in various fields of technology and science, including optomechanics, sensors, optical and acoustic insulators, high Q cavities, and filters.
Phononic crystals (PnCs) are a category of materials that exhibit periodic changes in their density and acoustic parameters. These crystals modify the propagation of sound waves and prevent the propagation of the frequencies within the phononic band gap (PBG). At each interface, the PBG results from the destructive interference of the transmitted mechanical waves and from the constructive interference of the secondary (reflected) waves. In particular, in the field of wave guiding and filtering, they have allowed exciting new ways to manipulate sound using point and linear defects introduced in the crystal. Recently, the study of phononic crystal slabs for future applications as platforms for integrated technological circuits has become an issue of interest.
Prof. Dr. Arafa H. Aly
Prof. Dr. Muhammad Maqbool
Guest Editors
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Keywords
- photonic crystals
- phononic crystals
- photonic and phoninic bandgap
- biosensor
- phoninic sensor
- acoustic sensor
- biophotonic sensor
- acoustic metamaterials
- filters
