Article
Optics
Hongxin Zeng, Huajie Liang, Yaxin Zhang, Lan Wang, Shixiong Liang, Sen Gong, Zheng Li, Ziqiang Yang, Xilin Zhang, Feng Lan, Zhihong Feng, Yubin Gong, Ziqiang Yang, Daniel M. Mittleman
Summary: The study introduces a new method using a two-dimensional electron gas perturbation microstructure unit to achieve high-precision digital terahertz phase manipulation. By controlling the external voltage to manipulate the perturbation strength, precise control of the phase of guided terahertz waves is achieved, with accuracy ranging from 2 to 5 degrees.
Article
Physics, Applied
Zhenyu Wang, Yuzhen Yang, Houyin Li, Han Jia, Jinlong Luo, Jian Huang, Zhennan Wang, Bo Jiang, Ningjing Yang, Guojun Jin, Hai Yang
Summary: This study focuses on the acoustic valley interface states, constructing a two-dimensional triangular-lattice phononic crystal with C-3v-symmetric scatterers to achieve acoustic valley Hall topological insulators. Through numerical calculations and experimental integration, successful implementation of multichannel acoustic communication devices for topological transport has been achieved.
PHYSICAL REVIEW APPLIED
(2021)
Article
Automation & Control Systems
Jie Liu, Howon Lee, Hu Jin
Summary: This article proposes a distributed autonomous self-healing mechanism to address the problem of undesired and abrupt network failure for industrial Internet of Things network operators. By estimating the number of devices communicating with each neighbor cell, the mechanism controls the channel access probability of each cell to maximize throughput, and allows devices to reselect their serving cells in a distributed manner to achieve maximum but fair throughput among devices.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2022)
Article
Multidisciplinary Sciences
Jin Man Kim, Soo-Yeon Yoo, Jung-Sub An, Jihee Jessica Woo, Young-Dan Cho, Hwi Eun Park, Myong-Hwan Karm
Summary: This study evaluated the effect of a multichannel oral irrigator (MCOI) on periodontal health and oral microbiome. The MCOI group showed no significant changes in plaque index and bleeding on probing, while the control group had increased values. Sequencing analysis revealed enrichment of beneficial bacteria in the MCOI group.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
V. Sepahvandi, B. Rezaei, A. H. Aly
Summary: This paper proposes a multichannel terahertz optical filter based on a one-dimensional photonic crystal with a third-order Fibonacci structure, including a bulk Dirac semimetal. The tuning of the optical properties of the proposed structure has been theoretically studied as a function of the Dirac semimetals' Fermi energy. Furthermore, the effects of the Fibonacci structure's periodic number and light's incident angle on optical channels were investigated. The results reveal that changes in the Fermi energy and incident angle remarkably affect the frequency and transmission of the optical channels. Additionally, the number of optical channels increases by increasing the periodic number of the Fibonacci structure.
SCIENTIFIC REPORTS
(2023)
Article
Physics, Multidisciplinary
Noe Atzin, Ali Mozaffari, Xingzhou Tang, Soumik Das, Nicholas L. Abbott, Juan J. de Pablo
Summary: This paper presents a minimal model for solitons in achiral nematic liquid crystals, revealing the key requirements for their generation in the absence of added charges. Through experiments and simulations, it is found that the observed formation and structure of butterfly structures, bullets, and stripes are consistent with the predictions of the model.
PHYSICAL REVIEW LETTERS
(2023)
Article
Engineering, Geological
William W. Greenwood, Dimitrios Zekkos, Jerome P. Lynch
Summary: The study demonstrated that using UAV to drop a mass can effectively generate Rayleigh surface waves below 10 Hz, supporting shear wave velocity profiling to greater depths in the subsurface without the need for signal stacking.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Yijun Yuan, Yingcai Li, Shichang Zhou
Summary: A new deconvolution method based on a multichannel statistical principle has been developed to address the noise effect on deconvolution operators and improve the resolution of seismic signals. The method involves calculating autocorrelation using a multichannel statistical strategy and adopting a local fitting technique to approximate the seismic wavelet's autocorrelation. Tests on synthetic data and real land seismic data show the effectiveness of the proposed method in increasing seismic signal resolution.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2021)
Article
Optics
Yimeng Wang, Chris H. Greene
Summary: The phase lag associated with coherent control has been investigated, where an excited system decays into more than one product channel. Previous theoretical studies have not achieved quantitative agreement with experimental measurements of the phase lag. In this study, a multichannel coupling formulation is used to quantitatively treat the phase lag, and the calculation based on a multichannel quantum defect and R-matrix treatment achieves good agreement with experimental observations. The study also develops formulas to describe the effects of hyperfine depolarization on multiphoton ionization processes and identifies resonances that have apparently never been experimentally observed and classified.
Article
Geochemistry & Geophysics
Siavash Mahvelati, Joseph T. Coe, Jonathan E. Nyquist
Summary: This study aimed to improve the understanding of Love survey parameters and their impact on resolution, comparing Rayleigh and Love waveforms collected with multiple active seismic sources at three sites. The results revealed significant information on the role of different source and survey parameters on surface wave data, providing new insights for survey design and its effects on surface wave testing.
PURE AND APPLIED GEOPHYSICS
(2021)
Article
Computer Science, Information Systems
Junjie Li, Junkang Wei, Zhihui Cao, Qin Chen, Lijie Yang, Chunyi Song, Zhiwei Xu
Summary: This paper presents a passive radar system for vehicle detection that is robust to bad weather conditions, low cost, and radio silent. By utilizing a multi-channel fusion joint detection scheme, better detection performance is achieved.
Article
Engineering, Geological
Hongxing Li, Chunhui Tao, Cai Liu, Guangnan Huang, Zhenan Yao, Hua Zhang, Xiangteng Wang
Summary: The modified multichannel analysis method of surface waves based on short array stacked correlation gather (SCG-MASW) can improve lateral resolution and maintain detection depth.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Joseph Kump, Eileen R. Martin
Summary: Multichannel Analysis of Surface Waves (MASW) is a technique used in geotechnical engineering to infer seismic shear wave velocities. By accelerating MASW calculations using modern computer hardware, significant speed improvements have been achieved. Comparison with existing Matlab MASW tool shows faster computation speeds. Utilizing parallelization and GPUs results in additional speedup on first use.
COMPUTERS & GEOSCIENCES
(2021)
Article
Geochemistry & Geophysics
W. Sun, M. D. Sacchi, Y. J. Gu
Summary: This study presents a multichannel sparse deconvolution method that utilizes the cross-trace coherency of RFs at individual stations for stable and accurate imaging outcomes. The method retrieves high-resolution and spatially continuous conversion energy and offers robustness against noise, increasing the volume of usable and high-quality data for receiver function analysis.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Multidisciplinary Sciences
Fang Li, Xiaoyang Yue, Yulong Liao, Liang Qiao, Kangle Lv, Quanjun Xiang
Summary: In this work, the authors demonstrate the interfacial electron-transfer mechanism in a crystalline triazine/heptazine carbon nitride homojunction. They use surface bimetallic cocatalysts as sensitive probes and conduct in situ photoemission to trace the S-scheme transfer of interfacial photogenerated electrons. The experimental and theoretical results reveal the dynamic nature of the charge transfer and its potential for enhancing CO2 photoreduction.
NATURE COMMUNICATIONS
(2023)
Article
Geosciences, Multidisciplinary
Geena F. Littel, Amanda M. Thomas, Annemarie S. Baltay
GEOPHYSICAL RESEARCH LETTERS
(2018)
Article
Geochemistry & Geophysics
G. F. Littel, M. G. Bostock, A. Schaeffer, S. Roecker
Summary: We generate a new catalog of earthquakes using the Regressive ESTimator algorithm, providing the most extensive seismicity data set offshore British Columbia to date. Our results confirm and expand previous models of microplate deformation, revealing the evolution of the Revere-Dellwood-Queen Charlotte fault system and seismic activity within the Explorer microplate. Stress inversions suggest a dominance of strike-slip faulting and systematic stress variation across the study area.