TY - JOUR
T1 - Thermally controllable reduction of absorption and extinction of a dielectric sphere by an InSb coating
AU - Alkhoori, Hamad M.
AU - Lakhtakia, Akhlesh
N1 - Funding Information:
H. M. Alkhoori acknowledges the United Arab Emirates University for funding this work. A. Lakhtakia is grateful to the Charles Godfrey Binder Endowment for ongoing support of his research activities.
Publisher Copyright:
© 2022 Elsevier GmbH
PY - 2022/6
Y1 - 2022/6
N2 - The absorption and extinction efficiencies of a sphere covered by InSb coating and illuminated by an incident plane wave in the terahertz gap were computed. Numerical results shows that these efficiencies, for some core materials and in some spectral regimes, can be reduced by adjusting the temperature. This, reduction of absorption and extinction by the InSb coating is not possible for air and metallic spheres, but it is possible for dielectric spheres. Furthermore, the InSb coating is more effective in absorption reduction for more dissipative dielectric materials, whereas it is more effective in extinction reduction for less dissipative dielectric materials.
AB - The absorption and extinction efficiencies of a sphere covered by InSb coating and illuminated by an incident plane wave in the terahertz gap were computed. Numerical results shows that these efficiencies, for some core materials and in some spectral regimes, can be reduced by adjusting the temperature. This, reduction of absorption and extinction by the InSb coating is not possible for air and metallic spheres, but it is possible for dielectric spheres. Furthermore, the InSb coating is more effective in absorption reduction for more dissipative dielectric materials, whereas it is more effective in extinction reduction for less dissipative dielectric materials.
KW - Electromagnetic absorption
KW - Electromagnetic scattering
KW - Terahertz gap
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U2 - 10.1016/j.ijleo.2022.168992
DO - 10.1016/j.ijleo.2022.168992
M3 - Article
AN - SCOPUS:85134683676
SN - 0030-4026
VL - 260
JO - Optik
JF - Optik
M1 - 168992
ER -