179 citations · 964 across the 18 of their papers we have counts for
18 papers
Bright dipolar excitons in twisted black phosphorus homostructures
Shenyang Huang, Boyang Yu, Yixuan Ma +12
Bright dipolar excitons, which contain electrical dipoles and have high oscillator strength, are an ideal platform for studying correlated quantum phenomena. They usually rely on c…
Layer-dependent exciton polarizability and the brightening of dark excitons in few-layer black phosphorus
Yuchen Lei, Junwei Ma, Jiaming Luo +11
The evolution of excitons from 2D to 3D is of great importance in photo-physics, yet the layer-dependent exciton polarizability has not been investigated in 2D semiconductors. Here…
Twist-angle and thickness-ratio tuning of plasmon polaritons in twisted bilayer van der Waals films
Chong Wang, Yuangang Xie, Junwei Ma +13
Stacking bilayer structures is an efficient way to tune the topology of polaritons in in-plane anisotropic films, e.g., by leveraging the twist angle (TA). However, the effect of a…
Tunable optical topological transitions of plasmon polaritons in WTe2 van der Waals films
Yuangang Xie, Chong Wang, Fucong Fei +9
Naturally existing in-plane hyperbolic polaritons and the associated optical topological transitions, which avoid the nano-structuring to achieve hyperbolicity, can outperform thei…
In-plane hyperbolic polariton tuners in terahertz and long-wave infrared regimes
Wuchao Huang, Thomas G. Folland, Fengsheng Sun +8
Development of terahertz (THz) and long-wave infrared (LWIR) technologies is mainly bottlenecked by the limited intrinsic response of traditional materials. Hyperbolic phonon polar…
Layer-dependent pressure effect on electronic structures of 2D black phosphorus
Shenyang Huang, Yang Lu, Fanjie Wang +11
Through infrared spectroscopy, we systematically study the pressure effect on electronic structures of few-layer black phosphorus (BP) with layer number ranging from 2 to 13. We re…
Prediction of hyperbolic exciton-polaritons in monolayer black phosphorus
Fanjie Wang, Chong Wang, Andrey Chaves +8
Hyperbolic polaritons exhibit large photonic density of states and can be collimated in certain propagation directions. The majority of hyperbolic polaritons are sustained in man-m…
Tunable terahertz plasmons in graphite thin films
Qiaoxia Xing, Chaoyu Song, Chong Wang +10
Tunable terahertz plasmons are essential for reconfigurable photonics, which have been demonstrated in graphene through gating, though with relatively weak responses. Here, we demo…
Plasmons in the van der Waals charge-density-wave material 2H-TaSe2
Chaoyu Song, Xiang Yuan, Ce Huang +11
Plasmons in two-dimensional (2D) materials beyond graphene have recently gained much attention. However, the experimental investigation is limited due to the lack of suitable mater…
Tunable plasmons in large area WTe2 thin films
Chong Wang, Yangye Sun, Shenyang Huang +8
The observation of the electrically tunable and highly confined plasmons in graphene has stimulated the exploration of interesting properties of plasmons in other two dimensional m…
From Anomalous to Normal: Temperature Dependence of the Band Gap in Two-Dimensional Black Phosphorus
Shenyang Huang, Fanjie Wang, Guowei Zhang +11
The temperature dependence of the band gap is crucial to a semiconductor. Bulk black phosphorus (BP) is known to exhibit an anomalous behavior. Through optical spectroscopy, here w…
Tunable Graphene Split-Ring Resonators
Qiaoxia Xing, Chong Wang, Shenyang Huang +7
A split-ring resonator is a prototype of meta-atom in metamaterials. Though noble metal-based split-ring resonators have been extensively studied, up to date, there is no experimen…
The optical conductivity of few-layer black phosphorus by infrared spectroscopy
Guowei Zhang, Shenyang Huang, Fanjie Wang +6
The strength of light-matter interaction is of central importance in photonics and optoelectronics. For many widely studied two-dimensional semiconductors, such as MoS2, the optica…
Van der Waals thin films of WTe2 for natural hyperbolic plasmonic surfaces
Chong Wang, Shenyang Huang, Qiaoxia Xing +4
A hyperbolic plasmonic surface supports highly directional propagating polaritons with extremely large density of states. Such plasmon polaritons have been realized in artificially…
Strain-tunable van der Waals interactions in few-layer black phosphorus
Shenyang Huang, Guowei Zhang, Fengren Fan +6
Interlayer interactions in 2D materials, also known as van der Waals (vdWs) interactions, play a critical role in the physical properties of layered materials. It is fascinating to…
Drastic enhancement of the Raman intensity in few-layer InSe by uniaxial strain
Chaoyu Song, Fengren Fan, Ningning Xuan +9
The vibrational and electronic properties of 2-dimensinal (2D) materials can be efficiently tuned by external strain due to their good stretchability. Resonant Raman spectroscopy i…
Electronic structures of air-exposed few-layer black phosphorus by optical spectroscopy
Fanjie Wang, Guowei Zhang, Shenyang Huang +5
The electronic structure of few-layer(FL) black phosphorus(BP) sensitively depends on the sample thickness, strain and doping. In this paper, we show that it is also vulnerable to…
Determination of layer-dependent exciton binding energies in few-layer black phosphorus
Guowei Zhang, Andrey Chaves, Shenyang Huang +4
The attraction between electrons and holes in semiconductors forms excitons, which largely determine the optical properties of the hosting material, and hence the device performanc…