Article
Biochemistry & Molecular Biology
Yuxiang Zhang, Xiao-Lan Yin, Mingfei Ji, Yi Chen, Zongtao Chai
Summary: This study conducted large-scale molecular dynamics simulations of FGFR2 mutants at the A-loop and revealed a higher population of active-like states in all mutants. The study also identified key residues related to the increased kinase activity and highlighted the long-range allosteric communication between the A-loop and the hinge region. These findings provide insights into the dynamic mechanism of FGFR2 dysfunctional activation and allosteric drug discovery.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Astronomy & Astrophysics
Shahaf Aharony, Nitzan Akerman, Roee Ozeri, Gilad Perez, Inbar Savoray, Ravid Shaniv
Summary: The study proposes and experimentally demonstrates a method for detecting a light scalar dark matter field by probing temporal oscillations of fundamental constants in an atomic optical transition. Utilizing dynamic decoupling in a tabletop setting, model-independent bounds on frequency variations of α and m(e) up to the MHz scale are obtained, constraining the parameter space of light scalar DM field models. The study suggests that the proposed method could complement or even compete with gravitational probes of light scalar DM, given the ability to directly observe the oscillatory behavior of coherent DM and potential future experimental improvements.
Article
Engineering, Aerospace
John D. B. Wylie, Sandipan Mishra, Michael Amitay
Summary: The study demonstrates the experimental mitigation of Tollmien-Schlichting waves using dynamic surface modifications with piezoelectric actuators, which successfully reduced the induced disturbance amplitudes to 11% in a closed-loop control scheme. Additionally, the experiments showed the possibility of amplifying the waves if transition to turbulence is desired.
Article
Engineering, Electrical & Electronic
Libin Sun, Yue Li, Zhijun Zhang, Hanyang Wang
Summary: This article introduces a general decoupling method based on a new perspective of common mode (CM) and differential mode (DM) cancellation, which can completely eliminate the mutual coupling effect between two closely spaced antennas. The proposed method has been validated through practical design examples and shown to provide better decoupling performance compared to conventional techniques, with great potential for applications in antenna arrays and multi-input multi-output (MIMO) systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Wanchen Yang, Lu Chen, Songlin Pan, Wenquan Che, Quan Xue
Summary: This study proposes a novel decoupling method that utilizes a 1 x 2 subarray to provide a pair of phase-reversed coupling paths, effectively improving the isolation between different subarrays and polarizations in an antenna array. The method has little impact on the radiation characteristics of the antenna array and can be implemented directly on the antenna layer, making it highly valuable for potential applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Jin Jiang, Qing-Xin Chu
Summary: This article proposes a new concept of broadband decoupling using multiple decoupling nulls to mitigate the mutual coupling problem in antenna arrays. The introduction of multiple resonators allows for broadband decoupling within the operating frequency band of the antenna. The article also elucidates the design method of the decoupling structure in the antenna array, providing significant computational resource savings. Simulation and test results demonstrate the effectiveness and high potential of this method for application to 5G MIMO antenna arrays deployed in base stations and wireless routers.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Optics
Xuan Cong, Hongxin Zeng, Shiqi Wang, Qiwu Shi, Shixiong Liang, Jiandong Sun, Sen Gong, Feng Lan, Ziqiang Yang, Yaxin Zhang
Summary: This work demonstrates a functionally decoupled terahertz metasurface that can incorporate any two functions into one metasurface and switch dynamically through external excitation. The metasurface operates in two modes with independent phase modulation, allowing for dynamic switching between dual functions.
PHOTONICS RESEARCH
(2022)
Article
Physics, Multidisciplinary
Hagai Edri, Boaz Raz, Gavriel Fleurov, Roee Ozeri, Nir Davidson
Summary: We studied the evolution of a Bose-Einstein condensate in a two-state superposition and successfully decoupled the system from strong magnetic noises. Our results show the impact of inter-state interactions on general superposition states and demonstrate squeezing of Gaussian noise using nonlinear spin dynamics. The scheme can be used for spin-squeezing beyond the standard quantum limit and observing polaron physics.
NEW JOURNAL OF PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Ramez Askar, Wilhelm Keusgen
Summary: The article discusses a novel radio-frequency-based self-interference cancellation technique for handling self-interference caused by antennas' mutual coupling in transmit-and-receive antenna configurations. It presents the physical and mathematical description of the self-interference radio channel and experimental results of antenna mutual coupling measurements. The article also discusses the lossless network decoupling technique and presents a generalized topology of the lossless decoupling network.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2023)
Article
Mechanics
Guangyao An, Jiacheng Kang, Longyao Wang, Lei Zhang, Jinhua Lang, Hongyang Li
Summary: In this study, the dynamic mode decomposition method was used to investigate the flow structures and evolutionary mechanisms of the internal flow field in axial compressors. Four main flow structures, including oscillation in the tip leakage vortex region, migration of the leakage-induced vortex, axial migration of the rear part of the leakage vortex, and oscillation in the leading edge vortex, were observed through flow field decoupling. The unsteady evolutionary mechanism of the flow field was found to be mainly influenced by the axial evolution of the rear part of the leakage vortex and the circumferential evolution of the leakage-induced vortex. The breakdown of the tip leakage vortex was identified as the main cause of flow unsteadiness.
Article
Materials Science, Multidisciplinary
Wenjie Ming, Boyuan Huang, Jiangyu Li
Summary: In this work, a decomposition principle is proposed to quantitatively decouple intrinsic electromechanical strain from extrinsic electrostatic interaction in piezoresponse force microscopy (PFM) measurement. By utilizing bimodal sequential excitation PFM, the method is successfully applied to analyze the data of periodically poled lithium niobate (PPLN) and demonstrate the substantial electrostatic interference. The decomposition method not only reconstructs the ferroelectric domain pattern consistent with theoretical expectation, but also recovers the piezoelectric coefficient accurately regardless of sample voltage applied.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Engineering, Electrical & Electronic
Min Li, Min Wang, Lijun Jiang, Lawrence Kwan Yeung
Summary: This paper introduces a new decoupling device called C-PDDN, which can effectively reduce the mutual coupling between antennas and improve the isolation of antennas in the same frequency band.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Libin Sun, Yue Li, Zhijun Zhang
Summary: An inductance-based decoupling scheme is proposed to reduce mutual coupling between closely spaced microstrip antennas. The inserted inductance adjusts CM and DM impedances to achieve decoupling effects, showing promising potential for antenna array applications. The proposed decoupling concept is validated through simulation, fabrication, and measurement, demonstrating improved isolation and good radiation performance.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Thermodynamics
Yupu Li, Aoran Fan, Yufeng Zhang, Xing Zhang
Summary: This paper investigates the foundation of Raman decoupling measurement for temperature and stress. By examining the thermoelastic model and phonon frequency shift theories, the independence of temperature and stress effects on Wurtzite GaN is verified, and the corresponding Raman shift coefficients are determined, which are consistent with the literature and confirm the measurement reliability.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Zhiyao Li, Mohammad Osman Tokhi, Ryan Marks, Haitao Zheng, Zhanfang Zhao
Summary: The study proposed a novel dynamic process for detecting defects in wind turbine blades using dynamic thermal loading and spatial phase shift techniques. The captured images were analysed in a 2D frequency domain and processed to visualize displacement changes during thermal loading. Experimental results showed potential for this approach in detecting defects in composite materials.
APPLIED SCIENCES-BASEL
(2021)