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We study the radiative heat flux between two nanoparticles in close vicinity to the natural hyperbolic material hBN with its optical axis oriented parallel to the interface. We show that the heat flux between the nanoparticles can be…

Mesoscale and Nanoscale Physics · Physics 2022-10-25 Annika Ott , Yang Hu , Xiao-Hu Wu , Svend-Age Biehs

We calculate the two-photon absorption in bulk and single layer hexagonal boron nitride (hBN) both by an ab-initio real-time Bethe-Salpeter approach and by a the real-space solution of the excitonic problem in tight-binding formalism. The…

Materials Science · Physics 2018-10-17 Claudio Attaccalite , Myrta Grüning , Hakim Amara , Sylvain Latil , François Ducastelle

Hexagonal boron nitride (hBN) is a natural hyperbolic material that supports both volume-confined hyperbolic polaritons (HPs) and sidewall-confined hyperbolic surface polaritons (HSPs). In this work, we demonstrate effective excitation,…

Mesoscale and Nanoscale Physics · Physics 2018-05-08 S. Dai , M. Tymchenko , Y. Yang , Q. Ma , M. Pita-Vidal , K. Watanabe , T. Taniguchi , P. Jarillo-Herrero , M. M. Fogler , A. Alù , D. N. Basov

Chemical and structural diversity present in hexagonal boron nitride ((h-BN) and graphene hybrid nanostructures provide new avenues for tuning various properties for their technological applications. In this paper we investigate the…

Materials Science · Physics 2015-06-11 Alper Kinaci , Justin B. Haskins , Cem Sevik , Tahir Cagin

Phonon polaritons are quasiparticles resulting from strong coupling of photons with optical phonons. Excitation and control of these quasiparticles in 2D materials offer the opportunity to confine and transport light at the nanoscale. Here,…

Mesoscale and Nanoscale Physics · Physics 2015-01-13 Zhiwen Shi , Hans A. Bechte , Samuel Berweger , Yinghui Sun , Bo Zeng , Chenhao Jin , Henry Chang , Michael C. Martin , Markus B. Raschke , Feng Wang

We developed a combined atomistic-continuum hierarchical multiscale approach to explore the effective thermal conductivity of graphene laminates. To this aim, we first performed molecular dynamics simulations in order to study the heat…

Materials Science · Physics 2017-04-07 B Mortazavi , T Rabczuk

In this paper, we present an experimental study of $\text{L1}_0$-FePt granular films with crystalline/amorphous boron nitride (BN) grain boundary materials for heat assisted magnetic recording (HAMR). It is found that an adequate RF…

Materials Science · Physics 2023-07-11 Chengchao Xu , B. S. D. Ch. S Varaprasad , David E. Laughlin , Jian-Gang , Zhu

We theoretically investigate equilibrium behaviors and photothermal effects of a flexible plasmonic metamaterial composed of aramid nanofibers and gold nanoparticles. The fiber matrix is considered as an external field to reconfigure a…

Mesoscale and Nanoscale Physics · Physics 2020-11-12 Anh D. Phan , Vu D. Lam , Katsunori Wakabayashi

Liquids confined down to the atomic scale can show radically new properties. However, only indirect and ensemble measurements operate in such extreme confinement, calling for novel optical approaches enabling direct imaging at the molecular…

Integrated photodetectors are crucial for their high speed, sensitivity, and efficient power consumption. In these devices, photocurrent generation is primarily attributed to the photovoltaic (PV) effect, driven by electron hole…

Materials Science · Physics 2024-10-18 Da Xu , Qiushi Liu , Boqun Liang , Ning Yu , Xuezhi Ma , Yaodong Xu , Takashi Taniguchi , Roger K. Lake , Ruoxue Yan , Ming Liu

Van der Waals heterostructures are at the forefront in materials heterostructure engineering, offering the ultimate control in layer selectivity and capability to combine virtually any material. Hexagonal boron nitride (hBN), the most…

Nanofocusing of light offers new technological opportunities for the delivery and manipulation of electromagnetic fields at sub-diffraction limited length scales. Here, we show that hyperbolic phonon polarity,HPP, modes in the mid infrared…

Although the high impermeability of graphene makes it an excellent barrier to inhibit metal oxidation and corrosion, graphene can form a galvanic cell with the underlying metal that promotes corrosion of the metal in the long term. Boron…

Materials Science · Physics 2015-03-05 Lu Hua Li , Tan Xing , Ying Chen , Rob Jones

Novel uses for 2-dimensional materials like graphene and hexagonal boron nitride (h-BN) are being frequently discovered especially for membrane and catalysis applications. Still however, a great deal remains to be understood about the…

Materials Science · Physics 2016-05-25 Yasmine S. Al-Hamdani , Dario Alfè , O. Anatole von Lilienfeld , Angelos Michaelides

The two-dimensional nanomaterial, hexagonal boron nitride (hBN) was cleanly transferred via a blister-based laser-induced forward-transfer method. The transfer was performed utilizing femtosecond and nanosecond laser pulses for separation…

Localized plasmons formed in ultrathin metallic nanogaps can lead to robust absorption of incident light. Plasmonic metasurfaces based on this effect can efficiently generate energetic charge carriers, also known as hot electrons, owing to…

Optics · Physics 2022-09-28 Larousse Khosravi Khorashad , Christos Argyropoulos

Hexagonal boron nitride (h-BN) is a natural hyperbolic material, for which the dielectric constants are the same in the basal plane (epsilon^t = epsilon^x = epsilon^y) but have opposite signs (epsilon^t*epsilon^z < 0) from that in the…

Hexagonal boron nitride (hBN) has emerged as a promising two-dimensional host for stable single-photon emission owing to its wide bandgap, high photostability, and compatibility with nanophotonic integration. We present a simulation-based…

Quantum Physics · Physics 2026-03-04 Saifian Farooq Bhat , Michael K. Koch , Sachin Negi , Alexander Kubanek , Vibhav Bharadwaj

We use a phase field crystal model to generate large-scale bicrystalline and polycrystalline single-layer hexagonal boron nitride (h-BN) samples and employ molecular dynamics (MD) simulations with the Tersoff many-body potential to study…

Materials Science · Physics 2018-10-09 Haikuan Dong , Petri Hirvonen , Zheyong Fan , Tapio Ala-Nissila

Interconnect materials with ultralow dielectric constant, and good thermal and mechanical properties are crucial for the further miniaturization of electronic devices. Recently, it has been demonstrated that ultrathin amorphous boron…

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