Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons
Cherenkov radiation (CR) is the electromagnetic shockwaves generated by the uniform motion of charged particles at a velocity exceeding the phase velocity of light in a given medium. In the Reststrahlen bands of hexagonal boron nitride (hBN), hyperbolic phonon polaritons (HPPs) are generated owing t...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2020-05-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2020-0090 |
| _version_ | 1819026721088733184 |
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| author | Qu Tuo Liu Fang Lin Yuechai Cui Kaiyu Feng Xue Zhang Wei Huang Yidong |
| author_facet | Qu Tuo Liu Fang Lin Yuechai Cui Kaiyu Feng Xue Zhang Wei Huang Yidong |
| author_sort | Qu Tuo |
| collection | DOAJ |
| description | Cherenkov radiation (CR) is the electromagnetic shockwaves generated by the uniform motion of charged particles at a velocity exceeding the phase velocity of light in a given medium. In the Reststrahlen bands of hexagonal boron nitride (hBN), hyperbolic phonon polaritons (HPPs) are generated owing to the coupling between mid-infrared electromagnetic waves and strong anisotropic lattice vibrations. This study theoretically and numerically investigates the generation of volume CR based on HPPs in hBN with super-large wavevectors. Results reveal that CR can be generated using free electrons with an extremely low kinetic energy of 1 eV—two orders of magnitude lower than that reported in extant studies. The findings of this investigation provide new insights into significantly reducing the electron energy required for CR generation and potentially open new research avenues in the fields of CR and HPP. |
| first_indexed | 2024-12-21T05:31:04Z |
| format | Article |
| id | doaj.art-d42faff9e4fd4cd9b954e8afff69d9fc |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-21T05:31:04Z |
| publishDate | 2020-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-d42faff9e4fd4cd9b954e8afff69d9fc2022-12-21T19:14:32ZengDe GruyterNanophotonics2192-86062192-86142020-05-01961491149910.1515/nanoph-2020-0090Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electronsQu Tuo0Liu Fang1Lin Yuechai2Cui Kaiyu3Feng Xue4Zhang Wei5Huang Yidong6Department of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing, 100084, PR ChinaCherenkov radiation (CR) is the electromagnetic shockwaves generated by the uniform motion of charged particles at a velocity exceeding the phase velocity of light in a given medium. In the Reststrahlen bands of hexagonal boron nitride (hBN), hyperbolic phonon polaritons (HPPs) are generated owing to the coupling between mid-infrared electromagnetic waves and strong anisotropic lattice vibrations. This study theoretically and numerically investigates the generation of volume CR based on HPPs in hBN with super-large wavevectors. Results reveal that CR can be generated using free electrons with an extremely low kinetic energy of 1 eV—two orders of magnitude lower than that reported in extant studies. The findings of this investigation provide new insights into significantly reducing the electron energy required for CR generation and potentially open new research avenues in the fields of CR and HPP.https://doi.org/10.1515/nanoph-2020-0090cherenkov radiationhexagonal boron nitride (hbn)hyperbolic materialsphonon polaritons |
| spellingShingle | Qu Tuo Liu Fang Lin Yuechai Cui Kaiyu Feng Xue Zhang Wei Huang Yidong Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons Nanophotonics cherenkov radiation hexagonal boron nitride (hbn) hyperbolic materials phonon polaritons |
| title | Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons |
| title_full | Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons |
| title_fullStr | Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons |
| title_full_unstemmed | Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons |
| title_short | Cherenkov radiation generated in hexagonal boron nitride using extremely low-energy electrons |
| title_sort | cherenkov radiation generated in hexagonal boron nitride using extremely low energy electrons |
| topic | cherenkov radiation hexagonal boron nitride (hbn) hyperbolic materials phonon polaritons |
| url | https://doi.org/10.1515/nanoph-2020-0090 |
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