Article
Chemistry, Physical
Brian S. Y. Kim, Aaron J. Sternbach, Min Sup Choi, Zhiyuan Sun, Francesco L. Ruta, Yinming Shao, Alexander S. McLeod, Lin Xiong, Yinan Dong, Ted S. Chung, Anjaly Rajendran, Song Liu, Ankur Nipane, Sang Hoon Chae, Amirali Zangiabadi, Xiaodong Xu, Andrew J. Millis, P. James Schuck, Cory. R. Dean, James C. Hone, D. N. Basov
Summary: Researchers have demonstrated a charge transfer strategy to program ambipolar low-loss graphene plasmonic structures, by covering graphene with transition-metal dichalcogenides and subsequently oxidizing them into transition-metal oxides. They achieve ambipolar low-loss plasmon polaritons at the transition-metal-oxide/graphene interfaces and precisely control the electron and hole densities induced by oxidation-activated charge transfer with the help of dielectric van der Waals spacers.
Article
Chemistry, Physical
Zahra Madadi
Summary: In this paper, a metal-graphene-insulator-metal (MGIM) structure is designed as a tunable plasmonic perfect absorber (PPA) in the FIR-band range, with high absorption efficiency exceeding 95% in the range of 35 to 105 μm. By applying gate bias voltage to graphene nanolayers in the structure, excellent tunability is achieved, resulting in shifting of absorption spectrum within the desired wavelength range.
Article
Optics
Junxiong Guo, Xin Gou, Ji Cai, Shicai Wang, Jinghua Ye, Jianbo Chen
Summary: We report a room temperature tunable mid-infrared absorber with dual-band selectivity. The absorber consists of a ferroelectric layer sandwiched between two single-layer graphene sheets, allowing for simultaneous tuning in two frequency bands by adjusting the ferroelectric superdomain. This technology opens up new possibilities for the fabrication of room temperature, reconfigurable multiband infrared devices.
Article
Optics
Junxiong Guo, Xin Gou, Ji Cai, Shicai Wang, Jinghua Ye, Jianbo Chen
Summary: This study presents a room temperature tunable mid-infrared absorber with dual-band selectivity, achieved by a structure composed of a ferroelectric layer and graphene sheet for resonance frequency tuning.
Article
Optics
Geraldo Melo, Wagner Castro, Cristiano Oliveira
Summary: We propose a simple and compact structure as a graphene-based plasmonic band stop filter for the THz region. By changing the chemical potential of graphene, the operating range of the filter can be dynamically controlled. Numerical simulations show that the device has good performance for the frequency range used in our work and can be used for future applications.
Article
Materials Science, Multidisciplinary
Meisam Esfandiyari, Ali Lalbakhsh, Saughar Jarchi, Mohsen Ghaffari-Miab, Hamideh Noori Mahtaj, Roy B. V. B. Simorangkir
Summary: This paper presents a novel tunable graphene-based bandstop filter/antenna-sensor. The structure combines filtering and high-gain radiation performance. The conductivity of graphene and its structural parameters are studied to optimize the component performance.
MATERIALS & DESIGN
(2022)
Article
Engineering, Electrical & Electronic
Naci Pekcokguler, Dominique Morche, Andreas Burg, Catherine Dehollain
Summary: A low power receiver architecture is proposed to monitor the 2.4 GHz ISM band for communication standards such as WLAN, ZigBee, and BLE. The architecture includes a widely tunable Gm-C CBPF, achieving a frequency shift of +/- 60MHz and a bandwidth range of 5-40MHz. The power consumption ranges from 6.7 mu W to 99.2 mu W.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Article
Optics
Xiaoqiang Ban, Ming Zhong, Brent E. Little
Summary: The study investigated the light absorption modulation effect of a hybrid plasmonic graphene waveguide modulator, achieving a modulation depth of 3 dB and a wider modulation bandwidth through parameter optimization. The proposed modulator also demonstrated lower power consumption and better performance in potential applications.
Article
Optics
Seham Abd-Elsamee, Nihal F. F. Areed, Hamdi A. El-Mikati, Salah S. A. Obayya
Summary: A new design for a tunable multi-channel plasmonic bandpass filter was investigated, where the resonance wavelengths can be controlled by utilizing different incident light intensities. The proposed filter, using InGaAsP as a non-linear optical medium, has potential applications in wavelength division multiplexing, photonic systems, coloring filters, and sensing.
Article
Engineering, Electrical & Electronic
Shuvajit Roy, Kapil Debnath
Summary: In this article, a graphene-based electromechanically tunable perfect absorber design is proposed and numerically investigated. By applying external voltages, the resonance absorption wavelength of the graphene layer can be shifted due to the deflection of the free-standing region. It is demonstrated that a wide shift in resonance wavelength can be achieved with a low actuation voltage in the mid-infrared region.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Chia-Chien Huang, Ruei-Jan Chang, Ching-Wen Cheng
Summary: This study proposed a waveguide structure consisting of multilayer graphene metamaterials, which support ultralow loss and long propagation lengths, suitable for building high-density photonic integrated circuits.
Article
Chemistry, Physical
Junxiong Guo, Lin Lin, Shangdong Li, Jianbo Chen, Shicai Wang, Wanjing Wu, Ji Cai, Tingchuan Zhou, Yu Liu, Wen Huang
Summary: Graphene plasmonic photodetectors with tunable dual-band infrared spectral selectivity driven by ferroelectric superdomain have been developed, exhibiting tunable resonance photoresponse. These devices enable applications in infrared imaging systems and detection of stationary and moving objects.
Article
Chemistry, Multidisciplinary
Nestor Bareza, Ewelina Wajs, Bruno Paulillo, Antti Tullila, Hannakaisa Jaatinen, Roberto Milani, Camilla Dore, Agustin Mihi, Tarja K. Nevanen, Valerio Pruneri
Summary: This article introduces a quantitative bioassay based on the modulation of mid-IR localized surface plasmon resonance (LSPR) in modified graphene nanostructures. The ability to quantify different concentrations of vitamin B-12 using graphene LSPR shifts is demonstrated, and the scalability potential of nanoimprinted large area nanostructured graphene films is illustrated.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Michael E. Berkowitz, Brian S. Y. Kim, Guangxin Ni, Alexander S. McLeod, Chiu Fan Bowen Lo, Zhiyuan Sun, Genda Gu, Kenji Watanabe, Takashi Taniguchi, Andrew J. Millis, James C. Hone, Michael M. Fogler, Richard D. Averitt, D. N. Basov
Summary: The study reveals that weak HCP features in the near-field can be significantly enhanced by coupling graphene SPP and HCP in layered graphene/hBN/Bi-2212 heterostructures. This enhancement arises from the multilayered structures acting as plasmonic cavities, altering collective modes of the layered superconductor.
Article
Chemistry, Multidisciplinary
Andrew M. Boyce, Jon W. Stewart, Jason Avila, Qixin Shen, Siyuan Zhang, Virginia D. Wheeler, Maiken H. Mikkelsen
Summary: Sub-10-nm-thick VO2 films deposited by atomic layer deposition (ALD) are integrated with plasmonic nanogap cavities to demonstrate tunable, spectrally selective absorption in the near-infrared (NIR) region. The absorption resonance can be blue-shifted by up to 60 nm upon inducing the phase transition via heating, and this process is reversible and repeatable over multiple temperature cycles.
Article
Optics
Chang-Long Liao, Guang-Lai Fu, Sheng-Xuan Xia, Hong-Ju Li, Xiang Zhai, Ling-Ling Wang
JOURNAL OF MODERN OPTICS
(2018)
Article
Chemistry, Physical
Hai-Yu Meng, Ling-Ling Wang, Xiang Zhai, Gui-Dong Liu, Sheng-Xuan Xia
Article
Chemistry, Physical
Li-Ping Sun, Xiang Zhai, Qi Lin, Gui-Dong Liu, Ling-Ling Wang
Article
Optics
Li Liu, Sheng-Xuan Xia, Xin Luo, Xiang Zhai, Ya-Bin Yu, Ling-Ling Wang
OPTICS COMMUNICATIONS
(2018)
Article
Optics
Pei-Nian Huang, Sheng-Xuan Xia, Guang-Lai Fu, Mei-Zhen Liang, Meng Qin, Xiang Zhai, Ling-Ling Wang
OPTICS COMMUNICATIONS
(2018)
Article
Optics
Gui-Dong Liu, Xiang Zhai, Hai-Yu Meng, Qi Lin, Yu Huang, Chu-Jun Zhao, Ling-Ling Wang
Article
Optics
Xin Luo, Xiang Zhai, Lingling Wang, Qi Lin
Article
Optics
Yu Huang, Yun Chen, Xiaotian Xue, Yanni Zhai, Lingling Wang, Zhengjun Zhang
Article
Chemistry, Multidisciplinary
Yu Huang, Xian Zhang, Emilie Ringe, Lingwei Ma, Xiang Zhai, Lingling Wang, Zhengjun Zhang
Article
Physics, Applied
Shihao Ban, Haiyu Meng, Xiang Zhai, Xiongxiong Xue, Qi Lin, Hongjian Li, Lingling Wang
Summary: A convertible metamaterial device based on BDS and VO2 is proposed, showcasing triple-band and broad-band absorption characteristics without altering structural parameters. The system allows for dynamic tuning of resonance frequency and absorption intensity in the THz range, opening up various potential applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Optics
Yong Li, Shiyu Wang, Yanghong Ou, Guoli He, Xiang Zhai, Hongjian Li, Lingling Wang
Summary: The study introduces a dynamically tunable anisotropic narrowband absorber based on monolayer black phosphorous and silicon grating in the terahertz band, featuring high absorption efficiency controlled by critical coupling conditions, exceptional tunability, intrinsic anisotropy, and ease of manufacturing.
Article
Materials Science, Multidisciplinary
Liang Xu, Jian Zeng, Xin Luo, Libin Xia, Zongle Ma, Bojun Peng, Zhengquan Li, Xiang Zhai, Lingling Wang
Summary: A dual-band perfect absorber based on (CH3NH3)PbI3 is designed to significantly enhance its absorption capability by exciting localized plasmon and surface plasmon modes. The absorber forms dual-band perfect absorption peaks in the communication regime, with the absorption of (CH3NH3)PbI3 layer increased to 43.1% and 64.2% at the dual-band absorption peaks. The physical mechanism in this absorber can also be utilized to strengthen the absorption of other halide perovskites, maintaining good performance under wide angles of incidence and different polarization states.
Article
Physics, Applied
Changchun Ma, Qi Lin, Lingling Wang, Kai Huang
Summary: A novel bulk Dirac semimetal metasurface is introduced to achieve tunable dual BICs, which can transform into quasi-BICs with different lineshapes by breaking structural symmetry. The excitation mechanisms involve the coupling between magnetic quadrupole and electric dipole modes for quasi-BIC I, or the coupling of two magnetic quadrupole modes for quasi-BIC II. The resonant wavelength of BICs can be dynamically tuned by varying the Fermi energy of BDS, offering a new pathway for ultra-compact active BIC devices without re-optimizing the geometrical structures.
APPLIED PHYSICS EXPRESS
(2021)
Article
Chemistry, Physical
Liang Xu, Jian Zeng, Quan Li, Libin Xia, Xin Luo, Zongle Ma, Bojun Peng, S. X. Xiong, Zhengquan Li, Ling-Ling Wang, Yongpeng Lei
Summary: By studying 2D/2D hBN/g-C3N4 nanocomposites with different types of defects, it was found that defect-induced Z-scheme vdW heterojunctions play a key role in enhancing photocatalytic performance. Compared to perfect structures, defective structures show stronger charge transfer and full visible-light response.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jian Zeng, Liang Xu, Xin Luo, Bojun Peng, Zongle Ma, Ling-Ling Wang, Youwen Yang, Cijun Shuai
Summary: The study constructed a SiH/CeO2(111) type-II heterojunction with high stability and visible light response, showing potential as an effective photocatalyst for splitting water to hydrogen.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
