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005 20231030042147.0
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100 _a20221114a2022 k y0engy50 ba
101 0 _aeng
102 _aCH
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aMagnetic Concentric Hot-Circle Generation at Optical Frequencies in All-Dielectric Mesoscale Janus Particles
_fO. V. Minin, Song Zhou, Cheng-Yang Liu [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 44 tit.]
330 _aThe development of all-dielectric structures with high magnetic response at optical frequencies has become a matter of intense study in past years. However, magnetic effects are weak at optical frequencies due to the small value of the magnetic permeability of natural materials. To this end, natural dielectric materials are unemployable for practical “magnetic” applications in optics. We have shown for the first time that it is possible to induce intense magnetic concentric subwavelength “hot circles” in a dielectric mesoscale Janus particle. The basis of the Janus particle is a combination of the effects of a photonic jet, whispering-gallery waves, and the concept of solid immersion. Simulations show an (H/H0)2/(E/E0)2 contrast of more than 10, and maximal magnetic field intensity enhancement is more than 1000 for a wavelength-scaled particle with a refractive index n < 2 and a size parameter in the order of 30. This work may provide a new way to realize precise magnetic devices for integrated photonic circuits and light–matter interaction.
461 _tNanomaterials
463 _tVol. 12, iss. 19
_v[3428, 11 p.]
_d2022
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aJanus particle
610 1 _ahot-spot generation
610 1 _amagnetic field
610 1 _amagnetic hot circles
610 1 _amesotronics
610 1 _aчастицы Януса
610 1 _aмагнитные поля
610 1 _aмезотроны
701 1 _aMinin
_bO. V.
_cphysicist
_cprofessor of Tomsk Polytechnic University, Doctor of technical sciences
_f1960-
_gOleg Vladilenovich
_2stltpush
_3(RuTPU)RU\TPU\pers\44941
701 0 _aSong Zhou
701 0 _aCheng-Yang Liu
701 0 _aJelene Antonicole Ngan Kong
701 1 _aMinin
_bI. V.
_cphysicist
_cProfessor of Tomsk Polytechnic University, Doctor of technical sciences
_f1960-
_gIgor Vladilenovich
_2stltpush
_3(RuTPU)RU\TPU\pers\37571
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа неразрушающего контроля и безопасности
_bОтделение электронной инженерии
_h7977
_2stltpush
_3(RuTPU)RU\TPU\col\23507
801 2 _aRU
_b63413507
_c20221114
_gRCR
856 4 _uhttps://doi.org/10.3390/nano12193428
942 _cCF