Unidirectional Wave Propagation in Low-Symmetric Colloidal Photonic-Crystal Heterostructures
| العنوان: | Unidirectional Wave Propagation in Low-Symmetric Colloidal Photonic-Crystal Heterostructures |
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| المؤلفون: | Vassilios Yannopapas |
| المصدر: | Nanomaterials Volume 5 Issue 1 Pages 376-385 Nanomaterials, Vol 5, Iss 1, Pp 376-385 (2015) |
| بيانات النشر: | MDPI, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Materials science, Frequency band, Wave propagation, business.industry, wave transmission, General Chemical Engineering, Physics::Optics, Heterojunction, Symmetry (physics), Article, Magnetic field, lcsh:Chemistry, lcsh:QD1-999, photonic crystals, Optoelectronics, General Materials Science, SPHERES, multiple-scattering, business, Monoclinic crystal system, Photonic crystal |
| الوصف: | We show theoretically that photonic crystals consisting of colloidal spheres exhibit unidirectional wave propagation and one-way frequency band gaps without breaking time-reversal symmetry via, e.g., the application of an external magnetic field or the use of nonlinear materials. Namely, photonic crystals with low symmetry such as the monoclinic crystal type considered here as well as with unit cells formed by the heterostructure of different photonic crystals show significant unidirectional electromagnetic response. In particular, we show that the use of scatterers with low refractive-index contrast favors the formation of unidirectional frequency gaps which is the optimal route for achieving unidirectional wave propagation. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2079-4991 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4c5a0bd26f05999a0bb133385f6f086Test http://europepmc.org/articles/PMC5312843Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e4c5a0bd26f05999a0bb133385f6f086 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20794991 |
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