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Super-Enhancement Focusing of Teflon Spheres

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Super-Enhancement Focusing of Teflon Spheres. / Yue, Liyang; Wang, James ; Yan, Bing et al.
In: Annalen der Physik, Vol. 532, No. 10, 2000373, 09.10.2020.

Research output: Contribution to journal › Article › peer-review

HarvardHarvard

Yue, L, Wang, J, Yan, B, Monks, J, Joya, Y, Dhama, R, Minin, O & Minin, I 2020, 'Super-Enhancement Focusing of Teflon Spheres', Annalen der Physik, vol. 532, no. 10, 2000373. https://doi.org/10.1002/andp.202000373

APA

Yue, L., Wang, J., Yan, B., Monks, J., Joya, Y., Dhama, R., Minin, O., & Minin, I. (2020). Super-Enhancement Focusing of Teflon Spheres. Annalen der Physik, 532(10), Article 2000373. https://doi.org/10.1002/andp.202000373

CBE

Yue L, Wang J, Yan B, Monks J, Joya Y, Dhama R, Minin O, Minin I. 2020. Super-Enhancement Focusing of Teflon Spheres. Annalen der Physik. 532(10):Article 2000373. https://doi.org/10.1002/andp.202000373

MLA

Yue, Liyang et al. "Super-Enhancement Focusing of Teflon Spheres". Annalen der Physik. 2020. 532(10). https://doi.org/10.1002/andp.202000373

VancouverVancouver

Yue L, Wang J, Yan B, Monks J, Joya Y, Dhama R et al. Super-Enhancement Focusing of Teflon Spheres. Annalen der Physik. 2020 Oct 9;532(10):2000373. Epub 2020 Sept 8. doi: 10.1002/andp.202000373

Author

Yue, Liyang ; Wang, James ; Yan, Bing et al. / Super-Enhancement Focusing of Teflon Spheres. In: Annalen der Physik. 2020 ; Vol. 532, No. 10.

RIS

TY - JOUR

T1 - Super-Enhancement Focusing of Teflon Spheres

AU - Yue, Liyang

AU - Wang, James

AU - Yan, Bing

AU - Monks, James

AU - Joya, Yasir

AU - Dhama, Rakesh

AU - Minin, Oleg

AU - Minin, Igor

PY - 2020/10/9

Y1 - 2020/10/9

N2 - A Teflon (Polytetrafluoroethylene, PTFE) sphere can be used as a focusing lens in the applications of imaging and sensing due to its low-loss property in the terahertz (THz) band. In this paper, we analytically calculated field intensities and focusing parameters for Teflon spheres at different low-loss levels and then discovered a super-enhancement focusing effect in the spheres with particular size parameters, which can stimulate about 4000 times stronger field intensity than that for incident radiation as well as the great potential of overcoming diffraction limit despite high sensitivity to the magnitude of Teflon loss. A subsequent analysis of scattering amplitudes proved that the strong scattering of a single order mode in the internal electric or magnetic field is the main factor causing this phenomenon.

AB - A Teflon (Polytetrafluoroethylene, PTFE) sphere can be used as a focusing lens in the applications of imaging and sensing due to its low-loss property in the terahertz (THz) band. In this paper, we analytically calculated field intensities and focusing parameters for Teflon spheres at different low-loss levels and then discovered a super-enhancement focusing effect in the spheres with particular size parameters, which can stimulate about 4000 times stronger field intensity than that for incident radiation as well as the great potential of overcoming diffraction limit despite high sensitivity to the magnitude of Teflon loss. A subsequent analysis of scattering amplitudes proved that the strong scattering of a single order mode in the internal electric or magnetic field is the main factor causing this phenomenon.

KW - Mie theory

KW - Teflon spheres

KW - dielectric particles

KW - low-loss materials

KW - near-field focusing

U2 - 10.1002/andp.202000373

DO - 10.1002/andp.202000373

M3 - Article

VL - 532

JO - Annalen der Physik

JF - Annalen der Physik

SN - 1521-3889

IS - 10

M1 - 2000373

ER -