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Asia Communications and Photonics Conference and Exhibition (ACP)

作者： Yu Chen Meilin Zhong Leyuan Zhang Wei Cao Shenghao Liu Xu Sun Gordon Ning Liu School of Electronic and Information Engineering Soochow University Suzhou China Silicon Photonics R&D Center CreaLights Technology Co. Ltd. Suzhou China

ISBN: (数字)9798350379266

ISBN: (纸本)9798350379273

A design method for ultra-compact adiabatic microrings is proposed and demonstrated. The microring design features two identical 180-degree bends, with the outer contour traced by double Euler curves. Moreover, we optimized the inner contour of the ultra-compact bends based on inverse-designed high-order Bezier curve. This optimization significantly reduces propagation loss due to sidewall roughness and multimode loss resulting from the excitation of higher-order modes. Additionally, simulation results indicate that the ultra-compact adiabatic microrings have ultra-low mode crosstalk, particularly when the free spectral range (FSr) is approximately 42 nm.

关键词： Optical losses Simulation design methodology Crosstalk Propagation losses Silicon Optical fiber communication resonators Optimization Photonics

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depositional process of hyperpycnal flow deposits:A case study on Lower Cretaceous Sangyuan outcrop in the Luanping Basin,Northeast China

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China Geology 2024年第3期7卷 505-516页

作者： de-zhi Yan ru-kai Zhu Hao Shou Zhao-hui Xu Wei-hong Liu Si-cheng Zhu Zhi-cheng Lei Jing-ya Zhang Chang Liu Yi Cai Huai-min Xu Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China National Energy Tight Oil and Gas R&D Center Beijing 100083China PetroChina Key Laboratory of Oil and Gas Reservoir Beijing 100083China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology Department of Information and EngineeringEast China University of TechnologyNanchang 330013China

Sedimentary process research is of great significance for understanding the distribution and characteristics of *** the detailed observation and measurement of the Sangyuan outcrop in Luanping Basin,this paper studies the depositional process of the hyperpycnal flow deposits,and divides their depositional process into three phases,namely,acceleration,erosion and *** the acceleration phase,hyperpycnal flow begins to enter the basin nearby,and then speeds up *** developed in the acceleration phase are *** addition,the original deposits become unstable and are taken away by hyperpycnal flows under the eroding *** a result,there are a lot of mixture of red mud pebbles outside the basin and gray mud pebbles within the *** the erosion phase,the reverse deposits are eroded and become thinner or even ***,no reverse grading characteristic is found in the proximal major channel that is closer to the source,but it is still preserved in the middle branch channel that is far from the *** entering the deceleration phase,normally grading deposits appear and cover previous *** final deposits in the basin are *** are reverse,and others are *** are superimposed with each other under the action of hyperpycnal *** analysis of the Sangyuan outcrop demonstrates the sedimentary process and distribution of hyperpycnites,and reasonably explain the sedimentary characteristics of *** is helpful to the prediction of oil and gas exploration targets in gravity flow deposits.

关键词： Hyperpycnal flow Sedimentary characteristics depositional process Gravity flow deposit Hyperpycnite red mud pebble Gray mud pebble Oil and gas exploration engineering Luanping Basin

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In-depth Analysis of the Hafnia Ferroelectrics as a Key Enabler for Low Voltage & QLC 3d VNANd Beyond 1K Layers: Experimental demonstration and Modeling

In-depth Analysis of the Hafnia Ferroelectrics as a Key Enab...

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Symposium on VLSI technology

作者： Giuk Kim Hyojun Choi Hunbeom Shin Sangho Lee Sangmok Lee Yunseok Nam Minhyun Jung Ilho Myeong Kijoon Kim Jongho Woo Suhwan Lim Kwangsoo Kim Wanki Kim daewon Ha Jinho Ahn Sanghun Jeon School of Electrical Engineering Korea Advanced Institute of Science and Technology (KAIST) Korea Semiconductor R&D Center Samsung Electronics Korea School of Material Science and Engineering Hanyang University Korea

ISBN: (数字)9798350361469

ISBN: (纸本)9798350361476

In this work, we experimentally demonstrate a remarkable performance improvement, boosted by the interaction of charge trapping & ferroelectric (FE) switching effects in metal-band engineered gate interlayer (***)- FE-channel interlayer (***)-Si (MIFIS) FeFET. The MIFIS with *** (BE-MIFIS) facilitates the maximized ‘positive feedback’ (Posi. FB.) of dual effects, leading to low operation voltage (VPGM/VErS: +17/-15 V), a wide memory window (MW: 10.5 V) and negligible disturb at a biased voltage of 9 V. Furthermore, our proposed model verifies that the performance enhancement of the BE-MIFIS FeFET is attributed to the intensified posi. FB. This work proves that the hafnia FE can play as a key enabler in extending the technology development of 3d VNANd, which is currently approaching a state of stagnation.

关键词： Solid modeling Analytical models Low voltage Three-dimensional displays Voltage Switches Very large scale integration

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Application of Sd-FEC to optical eigenvalue-modulated signals using a neural network-based demodulator

Application of SD-FEC to optical eigenvalue-modulated signal...

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49th European Conference on Optical Communications (ECOC 2023)

作者： K. Mishina T. Yoshida d. Hisano A. Maruta Graduate School of Engineering Osaka University Suita Japan Information Technology R&D Center Mitsubishi Electric Corporation Kamakura Japan

We propose the application of an Sd-FEC technique to an eigenvalue-modulated signal using a multilabel neural-network demodulator. The experimental results indicate a successful operation with an error-free transmissi...

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recycle and reuse: Fabrication of carbon microtube derived from waste cardboard for solid-state supercapacitor device

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Journal of the Taiwan Institute of Chemical Engineers 2024年 162卷

作者： Lenin, rachel Angeline Kumar, Mohanraj dong, Cheng-di Chen, Ching-Lung Chang, Jih-Hsing Department of Environmental Engineering and Management Chaoyang University of Technology Taichung413310 Taiwan Department of Applied Chemistry Chaoyang University of Technology Taichung413310 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Safety Health and Environmental Engineering Ming Chi University of Technology New Taipei City24301 Taiwan Center for Environmental Sustainability and Human Health Ming Chi University of Technology New Taipei City24301 Taiwan Biochemical Technology R&D Center Ming Chi University of Technology New Taipei City24301 Taiwan

Background: The unending consumption of depleting fossil fuels has paved the way for renewable and circular technologies, and enormous effort has been put into garbage management to use them as carbon precursors. Methods: This study reports the first-ever supercapacitive behavior of carbon microtubes synthesized from a well-known waste material, packaging cardboard, through thermal conversion, which has been introduced as electrode material without any chemical treatment as a green energy storage device. Significant findings: FESEM and TEM imagining show the carbon microtube structure. The pore architectures, surface area, and chemical characteristics have been easily modified by adjusting the activation temperature. The thermal stability of the carbon microtube was tested by TGA analysis. Upon increasing the carbonization temperature from 400 °C to 900 °C, the specific surface area of the carbon material increased, whereas the contents of nitrogen and oxygen decreased notably, significantly impacting the electrochemical properties of the carbon-based supercapacitors. Excellent charge transfer characteristics of the thermally activated carbon microtube have been studied through EIS and CV analysis. The CV investigations show the electric double-layer capacitor (EdLC) for the 900CB electrode. Galvanostatic charge-discharge (GCd) calculations give a specific capacitance of 127 F g−1 at 1 A g−1. The constructed asymmetric solid-state capacitor shows an outstanding stability of 85% for 10,000 cycles at a current density of 1 A g−1, unveiling a phenomenal power density of 125 W kg−1 and an energy density of 36 Wh kg−1. © 2024 Taiwan Institute of Chemical Engineers

关键词： Supercapacitor

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Modified Kelvin-Voigt fractional derivative model for viscoelasticity measurement in optical coherence elastography

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Chinese Optics Letters 2025年第1期23卷 93-101页

作者： Chenming Yang Zhongliang Li Nan Nan Teng Liu Yaoli Luo Xiangzhao Wang Advanced Light Source and System R&D Center Department of Advanced Optical and Microelectronic EquipmentShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China

Optical coherence elastography(OCE)can quantitatively obtain the viscoelasticity of tissues using rheological models and is widely applied to the clinical diagnosis of ***,commonly used rheological models in OCE do not account for the distinctive dependence of high-frequency storage and loss moduli on frequency in tissues,which results in the rheological models failing to accurately measure the viscoelastic properties of *** this paper,a modified Kelvin-Voigt fractional derivative model is presented based on the power-law behavior of soft tissues and the dependence of high-frequency complex shear modulus on frequency in living *** the rheometer and OCE tests,the modified model can provide the prediction of the power-law relationship between the low-frequency shear viscosity and frequency;compared with the Kelvin-Voigt and Kelvin-Voigt fractional derivative models,the modified model has a higher goodness-of-fit(accuracy>96%)for the high-frequency storage moduli of gelatin ***,the proposed model can reduce the root mean square error of fit by approximately 83%for the high-frequency(1–128 kHz)storage modulus of the polydimethylsiloxane phantoms obtained from publicly available ***,the modified model accurately predicts the mechanical properties of biomimetic materials over a wide frequency range,with the potential to more accurately reflect pathological changes in tissues.

关键词： optical coherence tomography optical coherence elastography viscoelasticity rheological model

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Multimodal misinformation detection based on the multi-granularity consistency

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Neurocomputing 2025年 644卷

作者： Zhang, Shibo Chen, Hongchang Liu, Shuxin Li, ran Jiang, HaoCong dong, Liang Institute of Information Technology PLA Information Engineering University Henan Zheng Zhou450002 China National Digital Switching System Engineering and Technological R&D Center Henan Zheng Zhou450002 China

In the current era of information proliferation, social media platforms frequently present multimodal data that may propagate misinformation. To address this challenge, computer vision techniques have been increasingly applied to online misinformation detection. Existing approaches often concentrate on learning deep semantic features from text and images without sufficiently exploring coherent alignments across multiple granular levels. This could hinder the construction of a comprehensive multimodal detection framework for misinformation detection. To overcome these issues, in this paper, we propose a three-level granularity consistency detection framework that explores image-text alignments at fine-grained, medium-grained, and coarse-grained levels. Meanwhile, we delve into the hierarchical structures of two modalities as well as the intricate semantic relationships between them. Specifically, our framework models token-level consistency through a multi-head cross-attention mechanism, phrase-level consistency via a graph neural network (GNN), and global-level consistency using a contrastive language-image pre-training model (CLIP), respectively. An adaptive fusion module then integrates these consistency features across all three granularities, enabling more nuanced and robust multimodal misinformation detection. Extensive experiments conducted on multiple benchmark datasets demonstrate that our approach substantially improves the performance of multimodal misinformation detection. © 2025

关键词： Tweets

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Preparation and Electrorheological response of PAL/TiO_(2)/PANI Nanorods

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Journal of renewable Materials 2021年第10期9卷 1707-1715页

作者： Ling Wang Chenchen Huang Ping Zhang Fenghua Liu Ting Zou Zhixiang Li Jianfei Zhang Gaojie Xu Ningbo Institute of Materials Technology and Engineering Chinese Academy of ScienceNingbo315201China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China Xuyi County Attapulgite Application Technology R&D and Achievement Transformation Center Xuyi211700China

Using palygorskite(PAL)as template,the PAL/TiO_(2)/PANI nano-rods were synthesized by heterogeneous precipitation and in-situ *** synthesized PAL/TiO_(2)/PANI nanorods were used as a novel electrorheological(Er)fluid by mixing with silicone oil,which showed excellent Er *** yield stress of the PAL/TiO_(2)/PANI based Er fluid(15 vol%)reached 8.8 kPa under 4 kV mm^(−1) electric *** dynamic shear stress of the PAL/TiO_(2)/PANI based Er fluid could maintain a stable level in the shear rate range of 0.1–100 s^(−1).Furthermore,the PAL/TiO_(2)/PANI Er fluid exhibited excellent suspension stability.

关键词： Electrorheological palygorkite titanium oxide polyaniline nanorod

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Integrated Well Network design Mode for CO2 EOr and Storage and its Application in L reservoir

Integrated Well Network Design Mode for CO2 EOR and Storage ...

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2025 International Petroleum technology Conference, IPTC 2025

作者： Wu, Zangyuan Tang, Yongliang Lian, Liming Zhou, daiyu Zhao, Haitao Shao, Guangqiang Feng, Qihong Zhou, Wei Li, Hong Bian, Wanjiang Zhang, Liang du, Hongbao Luo, Min Huang, Xingning Tarim Oilfield Company PetroChina Xinjiang Korla China R&D Center for Ultra-Deep Complex Reservoir Exploration and Development CNPC Xinjiang Korla China School of Petroleum Engineering China University of Petroleum East China Qingdao China Research Institute of Petroleum E&D Petrochina CNPC Beijing China Chengdu CK Energy Technology Co. Ltd. Sichuan Chengdu China

ISBN: (纸本)9781959025436

This paper addresses the challenge of difficulty in adjusting late-stage production in water-flooded reservoirs and proposes an integrated well network design mode for CO2 enhanced oil recovery (EOr) and storage. The well network is designed according to the full life cycle of carbon capture, utilization, and storage (CCUS), meeting the requirements of both CO2 EOr and storage phases. It extends the implementation time of CO2 EOr schemes to enhance oil recovery while ensuring effective CO2 storage, aligning with the overall strategy of global green and low-carbon development. The overall approach involves the use of a three-dimensional CO2 flooding injection and recovery well network, with progressive development in the vertical stratigraphic layers to maximize the utilization of existing old wells. The stratigraphic reconstruction involves the CO2 flooding injection and recovery well network, ensuring that new gas injection wells meet the requirements for CO2 injection processes and production rates, while also serving as replacements for gas injection in other stratigraphic layers. Production wells make use of the original old wells, and well completion methods are adjusted to achieve the development of replacement layers. The "top injection, middle production, bottom support" three-stage development method is designed to fully utilize the high points of reservoir microstructures and bottom water energy. Finally, well network optimization is achieved through streamline tracking simulation methods. The proposed technology has been applied in the CO2 enhanced oil recovery plan for the L reservoir. Initially focusing on CO2 flooding for oil recovery and shifting to CO2 storage later, it is projected to achieve a cumulative CO2 injection of tens of millions of tons over 46 years (including 40% recycled injection), with a displacement factor reaching 1.57PV. After deducting the recycled carbon amount, the cumulative carbon storage exceeds 6 million tons, affecting a vo

关键词： Crude oil

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Gas-induced controllable synthesis of the Cu(100) crystal facet for the selective electroreduction of CO2 to multicarbon products

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Nanoscale 2024年第6期16卷 3034-3042页

作者： Haoyang Wu Zhili Wang Benqiang Tian Yaping Li Zheng Chang Yun Kuang Xiaoming Sun State Key Laboratory of Chemical Resource Engineering College of Chemistry Beijing University of Chemical Technology Beijing 100029 P.R. China Ocean Hydrogen Energy R&D Center Research Institute of Tsinghua University Shenzhen 518057 P.R. China

Electrocatalytic CO2 reduction (ECr) to high value-added chemicals is an excellent method to attenuate the impact of greenhouse effect caused by CO2. At the same time, multicarbon products (C2+) get extensive attentio...

Electrocatalytic CO₂ reduction (ECr) to high value-added chemicals is an excellent method to attenuate the impact of greenhouse effect caused by CO₂. At the same time, multicarbon products (C₂₊) get extensive attention in view of their relatively high energy density and market price. At present, Cu is an important metal electrocatalyst to convert CO₂ into multicarbon products (e.g. ethylene, ethanol, and n-propanol); however, its poor selectivity impedes its practical application. It is well-known that the Cu(100) crystal facet can enhance the selectivity toward multicarbon products among different Cu crystal facets. Herein, the Cu nanoparticles were firstly prepared using the inductive effect of different gases (CO₂, CO, Ar, N₂, and air) during the Cu electrodeposition processes, in which the CO₂-induced Cu catalyst (Cu-CO₂) showed the largest normalized content of the Cu(100) crystal facet and the highest C₂₊ faradaic efficiency of 69% at a current density of 80 mA cm⁻² in ECr. Subsequently, the different CO₂ pressures during the Cu electrodepositions were studied to reveal the optimal CO₂ pressure in the CO₂-induced Cu synthesis for improved Cu(100) content as well as C₂₊ faradaic efficiency. Finally, density functional theory (dFT) calculations confirmed that CO₂ molecules preferred to get adsorbed on the Cu(100) crystal facet, which resulted in not only the presence of dominant Cu(100) during the CO₂-induced Cu synthesis but also the good electrocatalytic performance in ECr.

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