Yang Chen

Taiyuan University of Technology

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Jinping Li

Taiyuan University of Technology

Libo Li

Taiyuan University of Technology

Jiangfeng Yang

Taiyuan University of Technology

Yong Wang

Wuhan University of Technology

Puxu Liu

Taiyuan University of Technology

Jian‐Ping Lang

Soochow University

Hong‐Xi Li

Soochow University

Xiaoqing Wang

Taiyuan University of Technology

Weiwei Lei

RMIT University

Junbo Zhong

Sichuan University of Science and Engineering

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Chinese Academy of Sciences

137

University of Chinese Academy of Sciences

Taiyuan University of Technology

Zhejiang University

Nanjing University

Tsinghua University

University of Science and Technology of China

Wuhan University of Technology

Shanghai Jiao Tong University

South China University of Technology

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Resource Allocation for D2D Communication Underlaying Cellular Networks: A Distance-Based Grouping Strategy

Wireless Communications and Mobile Computing (2023)

Jing Gao Xiao Meng Yang Chen Bo Zhang Xin Yi

Device-to-device (D2D) communication with direct terminal connection is a promising candidate for 5G communication, which increases the capacity of cellular networks and spectral efficiency. Introducing D2D communication to cellular users (CUs) will increase system capacity, and CUs will provide reusable channel resources for D2D users (DUs). However, the sharing of channel resources between CUs and DUs will lead to cofrequency interference and affect the communication quality of user terminals. As a means of improving spectrum utilization and solving cofrequency interference problems, a one-to-many D2D communication system model is established in cellular networks. Through model analysis, the interference between CUs and DUs is correlated with their distance from one another. Considering the different interference of CUs to DUs at different distances, an algorithm for resource allocation based on distance grouping is proposed. With this algorithm, DUs will reuse channel resources of CUs within a reasonable distance in the group, and interference between DUs and CUs will be minimized. The improved particle swarm optimization algorithm is used to solve the optimal power, to achieve the maximum transmission rate of the system. Simulated results show that the algorithm will significantly improve system throughput and performance while also lowering the computational complexity of the algorithm, enabling the whole system to have better communication quality.

Spectral Efficiency

Cellular communication

Underlay

Channel allocation schemes

10.1155/2023/8594323

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Phase transition during inflation and the gravitational wave signal at pulsar timing arrays

arXiv (Cornell University) (2023)

Haipeng An Boye Su Hanwen Tai Lian-Tao Wang Yang Chen

Gravitational wave signal offers a promising window into the dynamics of the early universe. The recent results from pulsar timing arrays (PTAs) could be the first glimpse of such new physics. In particular, they could point to new details during the inflation, which can not be probed by other means. We explore the possibility that the new results could come from the secondary gravitational wave sourced by curvature perturbations, generated by a first-order phase transition during the inflation. Based on the results of a field-theoretic lattice simulation of the phase transition process, we show that the gravitational wave signal generated through this mechanism can account for the new results from the PTAs. We analyze the spectral shape of the signal in detail. Future observations can use such information to distinguish the gravitational wave signal considered here from other possible sources.

SIGNAL (programming language)

10.48550/arxiv.2308.00070

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Ammonia Modification on UTSA-280 for C₂H₄/C₂H₆ Separation

Acta Chimica Sinica (2020)

Yang Chen Yadan Du Yong Wang Puxu Liu Libo Li

炼厂干气中回收乙烯是扩宽C2H4来源的有效途径,但C2H4和C2H6物理性质和分子尺寸非常接近,分离困难.金属有机骨架材料(MOFs)近年来在低碳烃分离领域展现出广阔的前景.本工作采用氨吸附改性调节UTSA-280的结构,通过一维直孔道大小的调节实现C2H4/C2H6的高效分离.改性后的UTSA-280具有独特的超微孔结构能提升C2H4的吸附,而完全不吸附稍大的C2H6,实现理想的C2H4/C2H6吸附选择性(>1000).结果表明,改性后的UTSA-280的C2H4吸附量可提高至2.83 mmol/g,与未改性的材料相比增加29%,并且能阻挡C2H6的吸附,最终达到>1200的C2H4/C2H6选择性.蒙特卡罗分子模拟(GCMC)计算C2H4/C2H6混合气体(1:1)的吸附得出,改性后UTSA-280孔内的C2H4吸附相比于C2H6具有更多的吸附分布.通过C2H4/C2H6混合气体穿透实验测试,改性后的UTSA-280材料能展现出48 min以上的分离时间,相比于未改性的材料,分离性能提升近1倍.

10.6023/a20040130

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Fabrication of multi-channel filter array mold based on fast tool servo turning

AIP Advances (2022)

Yuetian Huang Shijie Li Jin Zhang Yang Chen Haifeng Liang

To realize a multi-channel integrated filter on a single substrate, a new preparation method is proposed in this paper, which was to adjust the thickness of the space layer based on the Fabry–Pérot interferometer theory. Optical thickness adjustment is achieved by integrating multispectral channels on a single substrate that is fabricated combined with coating, nanoimprinting, and single point diamond turning. A multi-channel filter is integrated on a mold and machined once, and three kinds of multi-channel array filter molds are fabricated utilizing fast tool servo turning. The accuracy of each channel is analyzed for the machine accuracy of the mold, which affords the key to this method. Although there exists a slight oscillation error on the surface of each channel, the maximum error is less than 4 nm and the ratio of error and differentials designed is less than 7%. The results indicate that the processing method of the multi-channel filter mold is feasible. As far as this technology is concerned, it provides technical support for mass manufacturing of large-scale multi-channel array filters.

10.1063/5.0091435

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Ammonia capture and flexible transformation of M-2(INA) (M = Cu, Co, Ni, Cd) series materials

Journal of Hazardous Materials (2015)

Yang Chen Libo Li Jinping Li Kun Ouyang Jiangfeng Yang

Isonicotinic acid

Ammonia gas

10.1016/j.jhazmat.2015.12.046

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Citations (48)

CCDC 898876: Experimental Crystal Structure Determination

The Cambridge Structural Database (2012)

Jesse D. Sokolow Elżbieta Trzop Yang Chen Jiji Tang Leslie J. Allen

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccz5c0h

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An amino-functionalized ultra-micropore metal–organic framework using for argon/oxygen adsorption separation

Journal of Industrial and Engineering Chemistry (2025)

Furong Yan Puxu Liu Yanhui Dai Ziliang Kang Yang Chen

10.1016/j.jiec.2025.01.013

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Adsorption and desorption of Cd(II) on amino biochar modified by nano zero valent iron

Huanjing Gongcheng Xuebao (2016)

Ma Tianxing Yang Chen Jiang Xianying Zhi Dang Xiaoqin Li

Zerovalent iron

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Nanocavity-in-Multiple Nanogap Plasmonic Coupling Effects from Vertical Sandwich-Like Au@Al₂O₃@Au Arrays for Surface-Enhanced Raman Scattering

ACS Applied Materials & Interfaces (2018)

Yang Chen Ying Chen Dan Liú Cheng Chen Jiemin Wang

The development of ideal three-dimensional (3D) tailorable surface-enhanced Raman scattering (SERS) substrates with the properties of timesaving, large area, high throughput, single or few molecules detection, reproducibility, reusable ability, and high density of "hot spots" has been the mainstream challenge and the robust task. Here, we construct perpendicular sandwich-like Au@Al2O3@Au hybrid nanosheets (PSHNs) on the Al foil as a 3D flexible substrate for SERS. The design of 3D PSHNs incorporates several advantageous aspects for SERS to enhance the performance of plasmonic diamers via bifunctions of vertical Al2O3 nanosheets (NSs) including the nanoscaffold and nanobaffle plate effects. As a nanoscaffold, it increases the space utilization of Au-Au diamers, whereas as a nanobaffle, it forms densely homogeneous Au@Al2O3@Au nanojunctions by sub-4 nm thickness of Al2O3 NSs as the dielectric isolated layer for the double-sided exposure of slitlike surface plasmon resonance. The optimized PSHN substrate exhibits a fascinating SERS sensitivity with an experimental enhancement factor of 1012 and is able to detect rhodamine B at an extremely low concentration up to the limit of single or few molecules (10-18 M), as well as can be recycled without the loss of SERS enhancement via the simple impregnation process. These advantages will greatly facilitate the wider use of SERS in many fields.

10.1021/acsami.7b17228

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Citations (19)