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    20 August 2026, Volume 46 Issue 4 Previous Issue   

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    Tailoring hyperbolic phonon polaritons in van der Waals heterostructures comprising multiphase boron nitride
    WANG Kaiyuan , LÜ Xin, MA Guolong , WEN Lu , LI Zhiqiang, WANG Lei
    2026, 46 (4):  165-173.  doi: 10.13725/j.cnki.pip.2026.04.001
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    Phonon polaritons are hybrid quasiparticles arising from the coupling between infrared photons and lattice vibrations, enabling strong subwavelength confinement of electromagnetic fields. This unique property makes them highly promising for nanoscale manipulation of infrared light and enhanced light–matter interactions. In this work, we theoretically investigate hyperbolic phonon polariton in various boron nitride (BN) systems. Van der Waals heterostructures are constructed by combining different BN materials, including h10BN, h11BN, pyrolytic boron nitride, and wurtzite boron nitride, and further integrated with α-MoO3. We systematically analyze the effects of material composition, stacking sequence, and layer thickness on polariton dispersion, interlayer coupling, and interfacial hybridization. The influence of isotopic mass variation, crystal disorder–induced damping, and phase-dependent dielectric responses is first examined through intrinsic dispersion comparisons. Our results reveal that multilayer BN heterostructures enable tunable mode hybridization, leading to dispersion reconstruction, including branch rearrangement and spectral redistribution. When coupled with α-MoO3, the system exhibits multiple dispersion bandgaps and low group-velocity branches under specific conditions, arising from strong multimode coupling. These findings demonstrate that material selection, stacking configuration, and thickness engineering provide versatile degrees of freedom for tailoring hyperbolic phonon polaritons, offering valuable theoretical guidance for infrared polariton engineering in complex van der Waals heterostru

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    Antiferroelectric thin film materials: research status and application prospects 
    MA Xingjian , HUANG Xinmiao , LI Weiwei
    2026, 46 (4):  174-201.  doi: 10.13725/j.cnki.pip.2026.04.002
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    Research on antiferroelectric materials has spanned more than seventy years, and their unique field-induced phase transition behavior has demonstrated significant application value in dielectric energy storage devices, novel information devices, and thermal management components. With advancements in thin-film growth techniques and the growing demand for miniaturization and integration of electronic devices, antiferroelectric thin films have attracted increasing attention. Numerous studies have shown that transitioning from bulk to thin-film forms, antiferroelectric materials exhibit novel physical properties distinct from their bulk counterparts, while also facing challenges such as the weakening or even disappearance of antiferroelectricity below a critical thickness due to size effects. In this context, this article systematically reviews the development history of antiferroelectric materials, from the physical origin of antiferroelectricity, the structural and phase transition characteristics of typical material systems (including perovskite-structured PbZrO3, PbHfO3, NaNbO3, AgNbO3, and fluorite-structured HfxZr1−xO2), to their diverse functional device applications such as energy storage capacitors, antiferroelectric random access memory, antiferroelectric field-effect transistors, antiferroelectric tunnel junctions, and electrocaloric effects. We hope to attract more researchers to pay attention to the development of antiferroelectric thin films, to deeply explore their yet-to-be-fully-revealed microscopic mechanisms, and to jointly promote continuous breakthroughs in new materials, new devices, and new applications of antiferroelectric thin films. 

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    Research progress on solid-state color center quantum sensing
    FENG Zihan , WANG Shuaiyan , LIN Chundan , YANG Zhenqing
    2026, 46 (4):  202-215.  doi: 10.13725/j.cnki.pip.2026.04.003
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    Quantum sensing, as a core branch of quantum information technology, utilizes quantum effects such as quantum superposition and quantum entanglement to break through the limits of classical physics and achieve ultra-high precision measurement of physical quantities. Compared to traditional quantum sensing materials, solid-state color center materials have core advantages such as being embedded in a rigid lattice, being able to stably maintain quantum coherence at room temperature in an atmosphere, being biocompatible and environmentally tolerant, and having a long coherence time for spin states. These characteristics provide high-quality material support for the industrialization of quantum sensing. This article first introduces the development trends of quantum precision measurement and sensing technology, and elaborates on the importance of quantum sensing. Then, it focuses on reviewing typical solid-state color center quantum sensing types such as diamond nitrogen-vacancy color centers, group-IV color centers, and hexagonal boron nitride color centers, systematically introducing their structures and applications. Finally, it briefly surveys other quantum sensing materials and discusses the development prospects and challenges of solid-state color center quantum sensing. 

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