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A Generalized Polymer Precursor Ink Design for 3D Printing of Functional Metal Oxides

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Nano-Micro Letters 2023年第10期15卷 433-448页

作者： Hehao Chen jizhe wang Siying Peng Dongna Liu Wei Yan Xinggang Shang Boyu Zhang Yuan Yao Yue Hui Nanjia Zhou Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering and Research Center for Industries of the FutureWestlake UniversityHangzhou 310030People’s Republic of China Institute of Advanced Technology Westlake Institute for Advanced StudyHangzhou 310024People’s Republic of China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027People’s Republic of China School of Chemical Engineering and Advanced Materials the University of AdelaideAdelaide 5005Australia

Three-dimensional-structured metal oxides have myriad applications for optoelectronic devices.Comparing to conventional lithography-based manufacturing methods which face significant challenges for 3D device architectures,additive manufacturing approaches such as direct ink writing offer convenient,on-demand manufacturing of 3D oxides with high resolutions down to sub-micrometer scales.However,the lack of a universal ink design strategy greatly limits the choices of printable oxides.Here,a universal,facile synthetic strategy is developed for direct ink writable polymer precursor inks based on metal-polymer coordination effect.Specifically,polyethyleneimine functionalized by ethylenediaminetetraacetic acid is employed as the polymer matrix for adsorbing targeted metal ions.Next,glucose is introduced as a crosslinker for endowing the polymer precursor inks with a thermosetting property required for 3D printing via the Maillard reaction.For demonstrations,binary(i.e.,ZnO,CuO,In_(2)O_(3),Ga_(2)O_(3),TiO_(2),and Y_(2)O_(3)) and ternary metal oxides(i.e.,BaTiO_(3) and SrTiO_(3)) are printed into 3D architectures with sub-micrometer resolution by extruding the inks through ultrafine nozzles.Upon thermal crosslinking and pyrolysis,the 3D microarchitectures with woodpile geometries exhibit strong light-matter coupling in the mid-infrared region.The design strategy for printable inks opens a new pathway toward 3D-printed optoelectronic devices based on functional oxides.

关键词： 3D printing Maillard reaction Polymer-assisted deposition Metal oxide Photonic crystal

Static analysis of tympanic membrane in aero-otitis media by three-dimensional model of the middle ear

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Theoretical & Applied Mechanics Letters 2022年第2期12卷 111-117页

作者： Kaili Sun Xu Bie Zhixing Feng Shen Yu Xiuzhen Sun jizhe wang Yingxi Liu Lina Peng Zhaoxu Yao Department of Otolaryngology-Head and Neck Surgery The 2nd Affiliated Hospital of Dalian Medical UniversityDalian 116027China Department of Otolaryngology-Head and Neck Surgery Handan Central HospitalHandan 056001China Department of Engineering Mechanics Dalian University of TechnologyDalian 116024China

The three-dimensional(3D)model of the middle ear is of great significance to the research of middle ear related diseases.The particular focus of this work is to simulate the impact of aircraft altitude and speed changes on the tympanic membrane(TM)during the descent phase,so as to analyze the pathogenesis of aero-otitis media and the mechanical response characteristics of TM under static pressure.The simulations showed that the stress and strain of TM increase as the altitude difference and speed of the aircraft increase,and the maximum stress and strain areas are consistent with the clinical observation of TM hyperemia.Therefore,among many prevention and treatment measures of aero-otitis media,it is a therapeutic method to directly balance the pressure difference between the inner and outer TM.

关键词： Aero-otitis media The middle ear Numerical simulation Statics calculation Tympanostomy tube placement

A Numerical Investigation of the Effects of Benign Paroxysmal Positional Vertigo on the Balance Function of the Inner Ear

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Computer Modeling in Engineering & Sciences 2018年第8期116卷 315-322页

作者： Shen Yu jizhe wang Yan Guo Xiuzhen Sun Shuang Shen State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of TechnologyDalian116024China. Department of Otorhinalaryngology the Second Affiliated Hospital of Dalian Medical UniversityDalian116027China. School of Special Education Binzhou Medical UniversityYantai264003China.

A three-dimensional numerical model of the membranous labyrinth of the semicircular canal of the inner ear was established to investigate the effects of canalithiasis of BPPV on the balance function of the inner ear.The movement of otolith particles in the membranous labyrinth was simulated when a person turns his head to a specific position.The effects of otolith movements on the balance function of the inner ear were simulated for different numbers,diameters,and initial positions of otoliths.The simulation results show that the otolith diameter affects the movement duration of otoliths in the membranous labyrinth.The number and diameter of otoliths,the diameter of the membranous labyrinth,and the initial position of the otoliths can cause changes in the pressure difference on both sides of the cupula of the crista ampullaris(cupula).The latent period and onset period are related to the diameter of otolith particles and the position of the head.There is also a correlation between the severity of the disease and the diameter and number of otolith particles.

关键词： Benign paroxysmal positional pertigo membranous labyrinth cupula of the crista ampullaris otolith

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面向车联网通信的OTFS信号检测算法综述

电讯技术 2024年第2期64卷 316-324页

作者：王健王吉哲沈正华龚黎慧倩高歌廖勇国网重庆市电力公司信息通信分公司重庆401120 重庆大学微电子与通信工程学院重庆400044

车联网(Vehicle to Everything,V2X)通信被认为是未来无线通信网络最重要的应用之一。然而,车辆在高速移动时引起的高多普勒频移会严重恶化V2X通信链路的性能。正交时频空(Orthogonal Time Frequency Space,OTFS)调制技术可以将时间和... 详细信息

车联网(Vehicle to Everything,V2X)通信被认为是未来无线通信网络最重要的应用之一。然而,车辆在高速移动时引起的高多普勒频移会严重恶化V2X通信链路的性能。正交时频空(Orthogonal Time Frequency Space,OTFS)调制技术可以将时间和频率选择性信道转换为时延-多普勒(Delay-Doppler,DD)域的非选择性信道,从而显著提高无线通信系统在高移动性场景下的性能,在V2X通信中具有重要的应用价值。但OTFS调制技术极大地增加了系统接收端的复杂度,研究低复杂度信号检测算法成为了新一代无线通信系统采用OTFS调制的关键问题之一。为此,综述了面向车联网V2X通信的OTFS信号检测算法。首先介绍了OTFS系统模型,然后概述了现有的低复杂度OTFS信号检测算法,并将其分为线性检测算法、消息传递(Message Passing,MP)检测算法及其改进算法、基于神经网络的检测算法3类,最后探讨了V2X通信中OTFS信号检测目前所面临的技术挑战与未来的发展趋势。

关键词：车联网高速移动通信正交时频空(OTFS) 信号检测

Single-atom alloys prepared by two-step thermal evaporation

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Nano Research 2024年第4期17卷 2808-2813页

作者： Honglin wang Jing Li Meirong Huang jizhe Cui Zhiying Cheng Rong Yu Hongwei Zhu State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Lab of Solid Waste Reuse for Building Materials Beijing Building Materials Academy of Science ResearchBeijing 100041China

Single-atom alloys(SAAs)have gained significant attention due to their remarkable atomic utilization efficiency,interactions between single atoms(SAs)and metal supports,and free-atom-like electronic structure of dopant elements.In this work,we observed the formation of SAs in pre-deposited metal particles by a two-step thermal evaporation technique,thereby establishing the first instance of discovering SAAs by thermal evaporation.The discovery of SAAs by thermal evaporation extends the range of SAAs preparation methods to include this traditional synthetic technique,which offers convenience,cost-efficiency,and universality.The formation mechanism of SAAs prepared using this technique was elucidated by density functional theory calculations.It was demonstrated that thermal evaporation can be utilized to prepare SAAs with multiple SAs,further highlighting its universal applicability.

关键词： single-atom alloys thermal evaporation density functional theory

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鼻腔内一氧化氮分布的实验及数值研究进展

医用生物力学 2023年第6期38卷 1248-1253页

作者：于申王丹青郭燕王吉喆大连理工大学工业装备结构分析国家重点实验室辽宁大连116024 大连医科大学附属二院耳鼻咽喉科辽宁大连116027

一氧化氮(nitric oxide,NO)在鼻腔内参与抗菌、抗病毒、促进鼻黏膜纤毛摆动、调节鼻黏膜血管扩张等多种生理功能。NO浓度异常会导致多种鼻腔疾病的发生,已成为临床常规检测气道炎症的生物学指标。随着医学与力学等领域的深入交叉,运用... 详细信息

一氧化氮(nitric oxide,NO)在鼻腔内参与抗菌、抗病毒、促进鼻黏膜纤毛摆动、调节鼻黏膜血管扩张等多种生理功能。NO浓度异常会导致多种鼻腔疾病的发生,已成为临床常规检测气道炎症的生物学指标。随着医学与力学等领域的深入交叉,运用数值研究方法,与传统的实验方法相结合,对鼻腔内NO浓度分布进行分析,可量化鼻腔内各处NO浓度,获得鼻腔内NO的分布规律,辅助相关鼻腔疾病的临床诊疗,有助于推动精准医疗的发展。本文对鼻腔内NO浓度分布实验研究及数值研究的进展进行综述,并对未来研究方向进行展望。

关键词：鼻腔一氧化氮分布浓度测试数值模拟

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耳鼻咽喉生物力学2022年研究进展

医用生物力学 2023年第4期38卷 637-642页

作者：于申吴跃文王吉喆大连理工大学工业装备结构分析国家重点实验室辽宁大连116024 大连医科大学附属第二医院耳鼻咽喉科辽宁大连116027

耳鼻咽喉器官是直接与外界接触并帮助人类感知外界信息的器官,这些器官功能的实施,以及相关疾病的发生发展都与力学因素紧密相关。本文结合2022年耳鼻咽喉领域的最新文献,对耳部结构的声传导特性的研究进展进行综述,包括气导和骨传导过... 详细信息

耳鼻咽喉器官是直接与外界接触并帮助人类感知外界信息的器官,这些器官功能的实施,以及相关疾病的发生发展都与力学因素紧密相关。本文结合2022年耳鼻咽喉领域的最新文献,对耳部结构的声传导特性的研究进展进行综述,包括气导和骨传导过程、前庭半规管的平衡功能、阻塞性睡眠呼吸暂停低通气综合征(obstructive sleep apnea-hypopnea syndrome, OSAHS)疾病治疗、鼻腔疾病与结构的关系对邻近器官的影响,并对未来的研究进行讨论。

关键词：听力传声平衡功能上气道气流阻塞性睡眠呼吸暂停低通气综合征生物力学

生长迟缓哺乳仔猪的特征及其调控措施的研究进展

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动物营养学报 2022年第12期34卷 7529-7537页

作者：陈文宁王吉喆李习龙蒋显仁中国农业科学院饲料研究所农业农村部饲料生物技术重点实验室北京100081

生长迟缓哺乳仔猪是指哺乳期前2周增重速度明显低于其他生长正常仔猪的健康哺乳仔猪,是断奶后腹泻的高发和重点对象。本文简述了生长迟缓哺乳仔猪的特征、对养猪生产的不良影响及其调控措施,以期为弱仔猪救助以及提高生猪养殖效率提供... 详细信息

生长迟缓哺乳仔猪是指哺乳期前2周增重速度明显低于其他生长正常仔猪的健康哺乳仔猪,是断奶后腹泻的高发和重点对象。本文简述了生长迟缓哺乳仔猪的特征、对养猪生产的不良影响及其调控措施,以期为弱仔猪救助以及提高生猪养殖效率提供理论依据和应用参考。

关键词：生长迟缓哺乳仔猪调控措施

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基于混合气体黏度的可燃气体浓度测量方法

中国安全科学学报 2022年第3期32卷 131-136页

作者：杨淞成王纪哲王丽华张洪铭赵兰明江苏海洋大学环境与化学工程学院江苏连云港222000 中国科学技术大学火灾科学国家重点实验室安徽合肥230026

为定量分析可燃气体组分,测量待测气体流经特制黏度传感部件后产生的压差响应信号,根据泊肃叶定律及混合气体黏度理论模型定量关系反演获得可燃气体体积分数,并利用不同体积分数H;开展测量试验。结果表明:基于混合气体黏度理论关系,可... 详细信息

为定量分析可燃气体组分,测量待测气体流经特制黏度传感部件后产生的压差响应信号,根据泊肃叶定律及混合气体黏度理论模型定量关系反演获得可燃气体体积分数,并利用不同体积分数H;开展测量试验。结果表明:基于混合气体黏度理论关系,可利用测量压差拟合计算待测气体浓度值,且理论计算浓度与基准值之间绝对偏差不超过±1.0%;在气体样品体积分数大于15%时,整体测量相对误差不超过±3%;定量检验结果表明:该方法具有较高的准确性,能够准确分析可燃气体浓度。

关键词：混合气体黏度可燃气体浓度测量方法泊肃叶定律气体压差