Article
Chemistry, Multidisciplinary
Ruijin Sun, Shifeng Jin, Jun Deng, Munan Hao, Xin Zhong, Yuxin Ma, Mingxing Li, Xiaolong Chen
Summary: By introducing isovalent sulfur substitution in FeSe, a much greater compression rate within the superconducting iron-chalcogenide layer is achieved, leading to an unabridged superconducting dome peaking at 37.5 K. Density functional theory calculations reveal that the decreased lattice and structural parameters contribute to the shift of Fe 3d(x)(2-)(y)(2) orbital, creating a new hole-pocket at the Fermi level that is intimately correlated with enhanced superconductivity.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tiema Qian, Eve Emmanouilidou, Chaowei Hu, Jazmine C. Green, Igor I. Mazin, Ni Ni
Summary: This study demonstrates the multiple metamagnetic transitions induced by external pressure in topological van der Waals magnets, providing a new avenue for efficient magnetic manipulation in these materials.
Review
Chemistry, Multidisciplinary
Xiangdong Guo, Wei Lyu, Tinghan Chen, Yang Luo, Chenchen Wu, Bei Yang, Zhipei Sun, F. Javier Garcia de Abajo, Xiaoxia Yang, Qing Dai
Summary: 2D monolayers can be vertically stacked in van der Waals heterostructures to support a wide range of confined polaritons. This offers advantages in terms of controlling the constituent layers, stacking sequence, and twist angles. These heterostructures have extended the performance and functions of polaritons, and potential applications include nanophotonic integrated circuits.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
A. J. Sternbach, S. H. Chae, S. Latini, A. A. Rikhter, Y. Shao, B. Li, D. Rhodes, B. Kim, P. J. Schuck, X. Xu, X-Y Zhu, R. D. Averitt, J. Hone, M. M. Fogler, A. Rubio, D. N. Basov
Summary: Layered crystals, such as tungsten diselenide, can exhibit unconventional optical properties that allow for the propagation of subdiffractional waveguide modes with hyperbolic dispersion. This study demonstrates optically induced hyperbolicity in WSe2 and explores the role of quantum transitions of excitons in the observed polaritonic response.
Review
Chemistry, Multidisciplinary
Hui-Lei Hou, Cosimo Anichini, Paolo Samori, Alejandro Criado, Maurizio Prato
Summary: In the past 15 years, 2D materials have revolutionized materials science and become powerful components for high-performance chemical sensors. By forming van der Waals heterostructures (VDWHs), the individual drawbacks of 2D materials can be overcome, leading to superior sensitivities, selectivity, and stability. This review discusses the latest developments in chemical sensors based on VDWHs of 2D materials, including sensing mechanisms and future directions with potential impact in environmental sciences and biomedical applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Fang Wang, Tao Zhang, Runzhang Xie, Anna Liu, Fuxing Dai, Yue Chen, Tengfei Xu, Hailu Wang, Zhen Wang, Lei Liao, Jianlu Wang, Peng Zhou, Weida Hu
Summary: With the continuous advancement of nanofabrication techniques and the discovery of useful manipulation mechanisms in high-performance applications, the morphology and usage of junction devices in photodetectors have undergone fundamental revolution. New types of photodetectors, not relying on any junction, have emerged, offering high signal-to-noise ratio and multidimensional modulation. This review focuses on a unique category of material systems, van der Waals materials, which support novel high-performance photodetectors beyond junctions.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Long Zhang, Fengcheng Wu, Shaocong Hou, Zhe Zhang, Yu-Hsun Chou, Kenji Watanabe, Takashi Taniguchi, Stephen R. Forrest, Hui Deng
Summary: Controlling matter-light interactions with cavities is crucial in modern science and technology. By integrating MoSe2-WS2 heterobilayers in a microcavity, cooperative coupling between moire-lattice excitons and microcavity photons has been established, providing versatile control of both matter and light. This moire polariton system combines strong nonlinearity and microscopic-scale tuning of matter excitations, offering a platform to study collective phenomena from tunable arrays of quantum emitters.
Review
Chemistry, Multidisciplinary
Tianping Ying, Tongxu Yu, Yanpeng Qi, Xiaolong Chen, Hideo Hosono
Summary: By breaking traditional alloying strategy restrictions, the high entropy concept has expanded the field of alloy exploitation. This review focuses on the combination of the high entropy concept and van der Waals systems to create a new category of materials called high entropy van der Waals materials (HEX). The design strategy for HEX incorporates the local features of high entropy materials and the holistic degrees of freedom in van der Waals materials, successfully leading to the discovery of various high entropy compounds with desirable physical properties. Additionally, deliberate design of structural units and their stacking configuration in HEX can also enhance catalytic performance.
Article
Chemistry, Multidisciplinary
Xiaoqing Chen, Yu Zhang, Ruijuan Tian, Xianghu Wu, Zhengdong Luo, Yan Liu, Xinran Wang, Jianlin Zhao, Xuetao Gan
Summary: A quadratically nonlinear photodetector (QNPD) composed of a van der Waals (vdW) stacked GaSe/InSe heterostructure is reported in this study. The QNPD exhibits unique electronic and optical attributes and extends the photodetection wavelength range from 900 to 1750 nm due to the extra second-harmonic generation (SHG) process in GaSe/InSe. It is highly sensitive to the variation of optical intensity and can be used as an autocorrelator for measuring ultrafast pulse widths and an optoelectronic mixer for signal processing.
Article
Chemistry, Multidisciplinary
Ciao-Fen Chen, Shih-Hsien Yang, Che-Yi Lin, Mu-Pai Lee, Meng-Yu Tsai, Feng-Shou Yang, Yuan-Ming Chang, Mengjiao Li, Ko-Chun Lee, Keiji Ueno, Yumeng Shi, Chen-Hsin Lien, Wen-Wei Wu, Po-Wen Chiu, Wenwu Li, Shun-Tsung Lo, Yen-Fu Lin
Summary: In this study, Van der Waals (vdW) heterostructures are used to integrate O-2-ultrasensitive MoTe2 and O-2-insensitive SnS2, allowing for the reversible operation of multifunctional transistors through polarity control. This research provides guidance for the application development of 2D materials and demonstrates the potential of reversible multifunctional devices.
Review
Materials Science, Multidisciplinary
Lixin Liu, Tianyou Zhai
Summary: The article reviews the latest research activities on wafer-scale vdWHs and their applications, outlining preparation strategies and applications to showcase their potential in electronic, optoelectronic, and flexible devices fields.
Article
Chemistry, Multidisciplinary
Xiaoli Ma, Shaohua Fu, Jianwei Ding, Meng Liu, Ang Bian, Fang Hong, Jiatao Sun, Xiaoxian Zhang, Xiaohui Yu, Dawei He
Summary: Researchers have successfully achieved quantitative tuning of intralayer excitons in WS2/ MoSe2 heterostructures and observed the transition from intralayer excitons to interlayer excitons. The energy of interlayer excitons is in a locked or superstable state, unaffected by pressure.
Article
Materials Science, Multidisciplinary
Yuqiang Fang, Lingping Kong, Ruiqi Wang, Zhuang Zhang, Zhongyang Li, Yanhui Wu, Kejun Bu, Xuqiang Liu, Shuai Yan, Takanori Hattori, Nana Li, Kuo Li, Gang Liu, Fuqiang Huang
Summary: This study demonstrates the extremely weak interlayer coupling and high tunability of layered RhI3 crystals. A pressure-driven phase transition and an ultra-broad tunability of bandgap narrowing were observed. These findings provide new opportunities for exploring and understanding layered van der Waals halides.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Maurits J. A. Houmes, Samuel Manas-Valero, Alvaro Bermejillo-Seco, Eugenio Coronado, Peter G. Steeneken, Herre S. J. van der Zant
Summary: This article investigates the structural anisotropy of CrPS4 and its relationship with magnetic phase transitions and discovers different mechanical response behavior compared to previously studied van der Waals magnets. The results demonstrate the potential of CrPS4 in the field of low-dimensional magnetism and show the potential of mechanical resonators in studying structural modifications in 2D materials and van der Waals heterostructures.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Haonan Ling, Jacob B. Khurgin, Artur R. Davoyan
Summary: Layered van der Waals materials provide unique atomic-void channels with subnanometer dimensions, offering opportunities for advanced applications such as sensing and quantum information. Theoretical limits of light guiding in these channels show that materials with strong resonances, excitonic and polaritonic properties are ideal for deeply subwavelength light guiding. Transition metal dichalcogenides with excitonic properties can concentrate over 70% of optical power within them.
