Review
Optics
Ye Ming Qing, Yongze Ren, Dangyuan Lei, Hui Feng Ma, Tie Jun Cui
Summary: Strong interaction between electromagnetic radiation and matter leads to the formation of hybrid light-matter states, which have distinct absorption and emission properties compared to uncoupled states. Recent studies on strong coupling between photonic nanostructures and 2DMs have demonstrated exceptional nanoscale optical properties and applications.
Article
Nanoscience & Nanotechnology
T. P. Rasmussen, P. A. D. Goncalves, Sanshui Xiao, Sebastian Hofferberth, N. Asger Mortensen, Joel D. Cox
Summary: By bending 2D materials into parabolic shapes to form waveguides, the field confinement associated with graphene plasmons can be significantly increased, leading to the formation of plasmonic waveguides. In 2D parabolic waveguides, the high field confinement of channel polaritons can enhance the spontaneous emission rate of quantum emitters near the parabolic vertex.
Article
Chemistry, Multidisciplinary
Jinhua Hong, Mark Kamper Svendsen, Masanori Koshino, Thomas Pichler, Hua Xu, Kazu Suenaga, Kristian S. Thygesen
Summary: The 1T-phase layered PtX2 chalcogenide has attracted attention due to its thickness dependent metal-semiconductor transition. By combining first-principles calculations with momentum resolved electron energy loss spectroscopy, the researchers studied collective excitations in 1T-PtSe2 and found that excitations in monolayer PtSe2 are mainly of excitonic nature.
Article
Physics, Condensed Matter
V. A. Kosobukin
Summary: A theory of two-dimensional non-radiative plasmon-excitons for atomically thin metal and semiconductor layers is developed. The model proposes a solvable model of 2D Coulomb coupled excitations and deduces the equations of motion for their polarization within classical electrodynamics. The study investigates the spectra and dispersion relations of plasmon-exciton waves, showing the frequency anticrossing effect near the resonance between plasmons and excitons. The dynamics of 2D polarization waves under time-dependent near-field excitation by an external dipole is studied, revealing valuable analogies with coupled oscillations in linear vibration theory.
SOLID STATE COMMUNICATIONS
(2022)
Article
Optics
Benoit Rogez, Zakaria Marmri, Franck Thibaudau, Guillaume Baffou
Summary: This article provides a comprehensive description of the photothermal effects in plasmonics involving metal layers, with a focus on the impact of nanoholes and various parameters on the system. The study revisits the concept of absorption cross section and discusses the complex photothermodynamical physics in systems with plasmonic nanoholes mixing localized and surface plasmons.
Article
Chemistry, Multidisciplinary
Zeynep Ezgi Eroglu, Dillon Contreras, Pouya Bahrami, Nurul Azam, Masoud Mahjouri-Samani, Abdelaziz Boulesbaa
Summary: The impact of defect-assisted recombination on the lifetime of excitons in 2D-TMD materials has been studied through experimental observations, revealing differences in the filling sequence of defect states near different excitons in monolayers of tungsten disulfide and diselenide.
Article
Materials Science, Multidisciplinary
M. A. Mojarro, R. Carrillo-Bastos, Jesus A. Maytorena
Summary: This study explores topological transitions in the propagation of surface electromagnetic modes in massive anisotropic tilted 2D Dirac systems. The presence of tilting and mass results in an indirect band gap and new Van Hove singularities. The interplay between intra- and interband transitions leads to an anisotropic optical conductivity with opposite signs of imaginary parts in orthogonal directions, enabling hyperbolic propagation of plasmons. This behavior is only attainable when tilt and mass coexist via frequency and Fermi level variation.
Article
Physics, Applied
Chao Guo, Jia-Bin You, Zhanxu Chen, Wenbo Zhang, Qian Zhao, Zhang-Kai Zhou
Summary: Plasmonic nanostructures, such as hyperbolic nanorods (HNR) proposed in this paper, offer the advantage of tunable photonic resonant modes and low loss, leading to a higher Purcell factor when coupled with resonant quantum emitters. HNR/QE hybrids also demonstrate superiority over traditional plasmonic nanorods in generating strong coupling and quantum entanglement.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Vasilios Karanikolas, Ioannis Thanopulos, Joel D. Cox, Takashi Kuroda, Jun-ichi Inoue, N. Asger Mortensen, Emmanuel Paspalakis, Christos Tserkezis
Summary: The study theoretically explores the influence of quantum surface effects in metal-dielectric layered nanostructures on the relaxation dynamics of a proximal two-level QE. The results reveal a clear splitting in the emission spectrum and non-Markovian relaxation dynamics of the emitter, indicating the presence of strong light-matter coupling despite nonclassical surface effects in the metal's optical response.
Article
Chemistry, Multidisciplinary
Victor Krivenkov, Pavel Samokhvalov, Ana Sanchez-Iglesias, Marek Grzelczak, Igor Nabiev, Yury Rakovich
Summary: The research found that gold nanorods can increase the effective TPACS of excitons in quantum dots by up to 12 times. Compared to gold nanospheres that cannot excite plasmons in the infrared range, gold nanorods showed an increase in TPACS.
Article
Optics
Tianhang Ren, Yuming Huang, Qingan Sun, Lei Jin, Yilin Wang, Li Yu, Kun Liang
Summary: This study theoretically investigates the multi-mode coupling among the localized surface plasmon resonance, lattice mode in Ag nanorod array, and the resonant Fabry-Perot microcavity. The results show a huge Rabi splitting and anti-crossing behavior in the absorption spectra of the hybrid nanostructure. The coupling system can be controlled by adjusting the thickness of the microcavity. The proposed tunable multi-mode ultra-strong coupling system paves the way for various room-temperature quantum applications.
EUROPEAN PHYSICAL JOURNAL D
(2022)
Review
Engineering, Electrical & Electronic
Purnendu Shekhar Pandey, Sanjeev Kumar Raghuwanshi, Santosh Kumar
Summary: This article discusses the applications of fiber optic SPR sensors in sensing various physical, biological, and chemical parameters. The comprehensive examination of sensing parameters using various methods and models provides important guidance for researchers in the scientific community.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Physical
Wen Li, Shiyu Yang, Bolin Guo, Xuehai Fu, Xiankan Zeng, Cheng Yan, Jingjing Cao, Qungui Wang, Weiqing Yang
Summary: Two-dimensional Ruddlesden-Popper hybrid organic-inorganic perovskites show great potential for highly efficient optoelectronic devices due to their remarkable exciton characteristics, adjustable band structure, and long-term environmental stability. However, the exciton emission behavior of these perovskites is still not well understood.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Da-Jie Yang, Song-Jin Im, Hai-Wen Huang, Chol-Song Ri, Kum-Dong Kim, Kil-Song Song, Ji-Cai Liu, Qu-Quan Wang
Summary: This paper reveals the effects of structured light carrying orbital angular momentum (OAM) on surface plasmons, showing anomalous plasmon excitations and couplings under OAM beams. The excitation of single particles is determined by both photon spin angular momentum (SAM) and OAM, and is influenced by particle locations. Fano resonance is observed in a nanorod dimer, with one rod aligned along light propagation direction as the bright mode and the other aligned along global polarization direction as the dark mode.
PHOTONICS RESEARCH
(2023)
Article
Multidisciplinary Sciences
Ning Zhou, Yuxin Yang, Xin Guo, Jue Gong, Zhangxing Shi, Zongyin Yang, Hao Wu, Yixiao Gao, Ni Yao, Wei Fang, Pan Wang, Limin Tong
Summary: This study reports the direct observation of lasing in microfiber-coupled single plasmonic nanoparticles enabled by strong mode coupling. The results show that single-mode laser emission from the nanoparticles can be achieved at room temperature with low threshold and narrow linewidth.
Article
Chemistry, Multidisciplinary
Hao Wang, Jinxiu Wen, Weiliang Wang, Ningsheng Xu, Pu Liu, Jiahao Yang, Huanjun Chen, Shaozhi Deng
Article
Chemistry, Analytical
Li Zhang, Xuemeng Li, Yangyang Wang, Quanying Fu, Yayin Tan, Hao Wang, Huanjun Chen, Jianhua Zhou
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Multidisciplinary
Yan Shen, Huanjun Chen, Ningsheng Xu, Yang Xing, Hao Wan, Runze Zhan, Li Gong, Jinxiu Wen, Chao Zhuang, Xuexian Chen, Ximiao Wang, Yu Zhang, Fei Liu, Jun Chen, Juncong She, Shaozhi Deng
Article
Chemistry, Analytical
Yangyang Wang, Xuemeng Li, Zhenning Su, Hao Wang, Hongqi Xia, Huanjun Chen, Jianhua Zhou
ANALYTICAL CHEMISTRY
(2019)
Article
Nanoscience & Nanotechnology
Yan Shen, Yang Xing, Hao Wang, Ningsheng Xu, Li Gong, Jinxiu Wen, Xuexian Chen, Runze Zhan, Huanjun Chen, Yu Zhang, Fei Liu, Jun Chen, Juncong She, Shaozhi Deng
Article
Chemistry, Physical
Nannan Li, Hao Wang, Yunhe Lai, Huanjun Chen, Jianfang Wang
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
(2020)
Article
Nanoscience & Nanotechnology
Lingfei Li, Lei Shao, Xiaowei Liu, Anyuan Gao, Hao Wang, Binjie Zheng, Guozhi Hou, Khurram Shehzad, Linwei Yu, Feng Miao, Yi Shi, Yang Xu, Xiaomu Wang
NATURE NANOTECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Yinzhu Jiang, Hao Wang, Shiya Wen, Huanjun Chen, Shaozhi Deng
Article
Materials Science, Multidisciplinary
Ximin Cui, Yunhe Lai, Ruoqi Ai, Hao Wang, Lei Shao, Huanjun Chen, Wei Zhang, Jianfang Wang
ADVANCED OPTICAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Ruoqi Ai, Christina Boukouvala, George Lewis, Hao Wang, Han Zhang, Yunhe Lai, He Huang, Emilie Ringe, Lei Shao, Jianfang Wang
Summary: A simple method for reshaping immobilized Au nanoplates through plasma treatment is demonstrated, resulting in the formation of nearly periodic right pyramid arrays on the surface. The gaseous environment in the plasma-treatment system, specifically nitrogen-containing environments, plays a significant role in the reshaping process. The reshaped Au nanoplates exhibit enhanced optical properties, including higher refractive index sensitivities and increased surface-enhanced Raman scattering intensities.
Article
Multidisciplinary Sciences
Tianye Huang, Xuecou Tu, Changqing Shen, Binjie Zheng, Junzhuan Wang, Hao Wang, Kaveh Khaliji, Sang Hyun Park, Zhiyong Liu, Teng Yang, Zhidong Zhang, Lei Shao, Xuesong Li, Tony Low, Yi Shi, Xiaomu Wang
Summary: This study reports the direct observation of two new plasmon modes in macroscopic twisted bilayer graphene (tBLG) with a highly ordered moiré superlattice. These modes include chiral plasmons arising from the uncompensated Berry flux of the electron gas under optical pumping, and slow plasmonic modes resulting from interband transitions in AB-stacked domains. These findings are important for understanding the electromagnetic dynamics of small-angle tBLG and enabling strong light-matter interactions in the mid-wave infrared spectral window.
Review
Chemistry, Multidisciplinary
Shasha Li, Hao Wang, Jing Wang, Huanjun Chen, Lei Shao
Summary: The electronic valley in 2D transition-metal dichalcogenides provides a new degree of freedom for information storage and processing, but robust detection, manipulation, and transport of valley pseudospins at room temperature remain challenging. Integrating these materials with nanophotonic objects offers a competitive solution and presents rich physics of light-matter interactions. Recent progress in enhancing valley polarization degree using nanophotonic strategies, especially at room temperature, is highlighted, along with discussions on open questions, major challenges, and interesting future developments in manipulating valley information in 2D semiconductors.
Review
Chemistry, Multidisciplinary
Hao Wang, Shasha Li, Ruoqi Ai, He Huang, Lei Shao, Jianfang Wang
Article
Chemistry, Multidisciplinary
Wenzheng Lu, Ximin Cui, Tsz Him Chow, Lei Shao, Hao Wang, Huanjun Chen, Jianfang Wang