搜索到1289篇“ MICROFIBERS“的相关文章
Microfluidics-derived microfibers in flexible bioelectronics
2024年
Flexible electronics have attracted extensive attention across a wide range of fields due to their potential for preventive medicine and early disease detection.Microfiber-based textiles,encountered in everyday life,have emerged as promising platforms with integrated sensing capabilities.Microfluidic technology has been recognized as a promising avenue for the development of flexible conductive microfibers and has made significant achievements.In this review,we provide a comprehensive overview of the state-of-the-art advancements in microfiber-based flexible electronics fabricated using microfluidic platforms.Firstly,the fundamental strategies of the microfluidic fabrication of conductive microfibers with different structures and morphologies are introduced.Subsequently,attention is then directed towards the diverse applications of these microfibers in bioelectronics.Finally,we offer a forwardlooking perspective on the future challenges about microfluidic-derived microfibers in flexible bioelectronics.
Chaoyu YangXingyu HouLi Zhang
关键词:MICROFLUIDICS
Sustainable biomedical microfibers from natural products被引量:2
2024年
Microfibers from natural products are endowed with remarkable biocompatibility,biodegradability,sustainable utilization as well as environmental protection char-acteristics etc.Benefitting from these advantages,microfibers have demonstrated their prominent values in biomedical applications.This review comprehensively summarizes the relevant research progress of sustainable microfibers from natural products and their biomedical applications.To begin,common natural elements are introduced for the microfiber fabrication.After that,the focus is on the specific fabri-cation technology and process.Subsequently,biomedical applications of sustainable microfibers are discussed in detail.Last but not least,the main challenges during the development process are summarized,followed by a vision for future development opportunities.
Jiahui GuoXinyue CaoZhiqiang LuoYujuan ZhuYuanjin ZhaoXiaosong Gu
关键词:MICROFIBERSSUSTAINABILITY
Bioinspired anti-freezing 3D-printable conductive hydrogel microfibers for highly-sensitive and wide-range detection of ultralow and high strains
2024年
Soft strain sensors that can transduce stretch stimuli into electrical readouts are promising as sustainable wearable electronics.However,most strain sensors cannot achieve highly-sensitive and wide-range detection of ultralow and high strains.Inspired by bamboo structures,anti-freezing microfibers made of conductive poly(vinyl alcohol)hydrogel with poly(3,4-ethylenedioxythiphene)-poly(styrenesulfonate)are developed via continuous microfluidic spinning.The microfibers provide unique bamboo-like structures with enhanced local stress to improve both their length change and resistance change upon stretching for efficient signal conversion.The microfibers allow highlysensitive(detection limit:0.05%strain)and wide-range(0%-400%strain)detection of ultralow and high strains,as well as features of good stretchability(485%strain)and anti-freezing property(freezing temperature:-41.1°C),fast response(200 ms),and good repeatability.The experimental results,together with theoretical foundation analysis and finite element analysis,prove their enhanced length and resistance changes upon stretching for efficient signal conversion.By integrating microfluidic spinning with 3D-printing technique,the textiles of the microfibers can be flexibly constructed.The microfibers and their 3D-printed textiles enable highperformance monitoring of human motions including finger bending and throat vibrating during phonation.This work provides an efficient and general strategy for developing advanced conductive hydrogel microfibers as highperformance wearable strain sensors.
Yi-Min YangTing-Yuan HuHaidong FanLu ShiShi-Yuan ZhangZhuang LiuXiao-Jie JuRui XieWei WangLiang-Yin Chu
关键词:ANTI-FREEZING
Micro‑Supercapacitors Based on Fungi‑Derived Biocarbon Microfibers Infused with NiMoO Nanoparticles for Biomedical and E‑Skin Applications
2024年
In various biomedical fields,noninvasive medical procedures are favored over invasive techniques,as the latter require major incisions or surgeries that cause bleeding,pain,and tissue scarring.The increased use of noninvasive biomedical equipment has created a demand for effective energy storage devices that are sufficiently compact to be used as a power source,easy to commercialize,and bio-friendly.Herein,we report the facile synthesis of nickel molybdenum oxide nanoparticle-infused biocarbon microfibers(NiMoO NPs@BCMFs)as a novel energy storage material.The microfibers were derived from the bracket fungus Laetiporus sulphureus.In a three-electrode system,the NiMoO NPs@BCMFs/nickel foam(NF)electrode delivered an areal capacity of 113µAh cm^(-2)at 1.5 mA cm^(-2),with excellent cycling stability.Its capacity retention was 104%,even after 20,000 cycles.Bare BCMFs were also synthesized from the fungal biomass to fabricate a negative BCMFs/NF electrode.This,together with the positive NiMoO NPs@BCMFs/NF electrode,was used to construct a bio-friendly(hybrid-type)micro-supercapacitor(BMSC),which exhibited maximum energy and power density values of 56µWh cm^(-2)and 11,250µW cm^(-2),respectively.When tested for its ability to power biomedical electronics,the BMSC device successfully operated an electrical muscle stimulator,inducing potential signals into a volunteer in real-time application.
Shaik Junied ArbazBhimanaboina RamuluJae Su Yu
Parallel fabrication of silica optical microfibers and nanofibers被引量:2
2024年
Optical micro/nanofibers(MNFs)taper-drawn from silica fibers possess intriguing optical and mechanical properties.Recently,MNF array or MNFs with identical geometries have been attracting more and more attention,however,current fabrication technique can draw only one MNF at a time,with a low drawing speed(typically 0.1 mm/s)and a complicated process for high-precision control,making it inefficient in fabricating multiple MNFs.Here,we propose a parallel-fabrication approach to simultaneously drawing multiple(up to 20)MNFs with almost identical geometries.For fiber diameter larger than 500 nm,measured optical transmittances of all as-drawn MNFs exceed 96.7%at 1550-nm wavelength,with a diameter deviation within 5%.Our results pave a way towards high-yield fabrication of MNFs that may find applications from MNF-based optical sensors,optical manipulation to fiber-to-chip interconnection.
Hubiao FangYu XieZipei YuanDawei CaiJianbin ZhangXin GuoLimin Tong
微流控技术可控制备异形微纤维的研究进展
2024年
异形微纤维因其多样化的结构和功能被广泛应用于仿生材料、药物控释和生物医学等诸多领域。微流控技术作为一种新型的微纳材料制备技术,通过调节通道结构、流体物性和流动条件,可以实现多种异形微纤维的可控制备。综述了近年基于微流控技术制备面向医药、化工和环境等重要领域的异形微纤维的研究进展。介绍了通过设计微流控装置的通道结构实现可控制备实心、中空、纺锤状和螺旋状等异形微纤维的诸多策略,探讨了基于异形微纤维的微观结构实现其功能多样化的重要思路,展望了微流控技术在可控构建新型异形微纤维方面的发展趋势,以期通过加强流动机制和成型机理的研究为制备高仿生性的异形微纤维提供重要参考。
巨晓洁何明炜夏有强汪伟褚良银
关键词:功能化
聚氨酯蘑菇状仿生微纤维的混合黏附破坏分析
2024年
在仿生学领域壁虎因具有优越的攀爬能力而被广泛研究。为对壁虎仿生微结构的垂直攀爬功能进行设计,本工作对壁虎仿生微纤维与垂直表面之间的黏附机制进行了深入研究。采用双线性内聚力模型对聚氨酯(PU)蘑菇状仿生微纤维与刚性基体之间的界面黏附行为进行研究。运用压缩+剪切、剪切加载、拉伸+剪切分别模拟壁虎足部的附着、滑移及分离等爬行动作,探讨壁虎爬行过程中的黏附破坏机理。结果表明,在剪切加载、拉伸+剪切混合加载下,界面均发生法向和切向的混合黏附破坏;在压缩+剪切混合加载下,界面发生切向脱黏或混合黏附破坏取决于压缩载荷的大小。法向载荷通过改变微纤维与基体的接触面积来实现对切向黏附承载力的调控。斜向加载下界面的黏附承载力与载荷倾角有关,对于所选用的聚氨酯蘑菇状仿生微纤维,当斜向压力的倾角小于52°时,界面的切向黏附承载力随着斜向压力倾角的增大而增大;最优的斜向拉力方向为17°,沿该方向可用最小的拉力实现界面的脱黏。
鲁雯雨宁志华彭焘陈海燕金延
Simultaneous photocatalytic degradation and SERS detection of tetracycline with self-sustainable and recyclable ternary PI/TiO_(2)/Ag flexible microfibers
2024年
Facile and efficient photocatalysts using sunlight,as well as fast and sensitive surface-enhanced Raman spectroscopy(SERS)substrates,are urgently needed for practical degradation of tetracycline(TC).To meet these requirements,a new paradigm for PI/TiO_(2)/Ag organic‒inorganic ternary flexible microfibers based on semiconducting titanium dioxide(TiO_(2)),the noble metal silver(Ag)and the conjugated polymer polyimide(PI)was developed by engineering a simple method.Under sunlight,the photocatalytic characteristics of the PI/TiO_(2)/Ag flexible microfibers containing varying amounts of Ag quantum dots(QDs)were evaluated with photocatalytic degradation of TC in aqueous solution.The results demonstrated that the amount of Ag affected the photocatalytic activity.Among the tested samples,PI/TiO_(2)/Ag-0.07(93.1%)exhibited a higher photocatalytic degradation rate than PI/TiO_(2)(25.7%),PI/TiO_(2)/Ag-0.05(77.7%),and PI/TiO_(2)/Ag-0.09(63.3%).This observation and evaluation conducted in the present work strongly indicated a charge transfer mechanism.Moreover,the PI/TiO_(2)/Ag-0.07 flexible microfibers exhibited highly sensitive SERS detection,as demonstrated by the observation of the Raman peaks for TC even at an extremely low concentration of 10–10 moles per liter.The excellent photocatalytic performance and SERS detection capability of the PI/TiO_(2)/Ag flexible microfibers arose from the Schottky barrier formed between Ag and TiO_(2)and also from the outstanding plasmonic resonance and visible light absorptivity of Ag,along with immobilization by the PI.The successful synthesis of PI/TiO_(2)/Ag flexible microfibers holds significant promise for sensitive detection and efficient photocatalytic degradation of antibiotics.
Donglai HanBoyang GuoYanru LiWei FengKeyan LiuTianna WuYuchun WanLili WangMing GaoYang LiuLili YangMaobin WeiShuo Yang
关键词:PHOTOCATALYTICTERNARY
CX3CR1对创伤性骨髓炎大鼠骨骼肌微纤维、ERK/MAPK信号通路及炎症反应的影响被引量:1
2024年
目的探索CX3CR1对创伤性骨髓炎大鼠骨骼肌微纤维、ERK/MAPK信号通路及炎症反应的影响。方法选取30只SPF级SD雄性大鼠,依据随机数字表法分为健康组、模型组、CX3CR1抑制组,每组10只。除健康组外,其余各组均建立创伤性骨髓炎模型。其中健康组、模型组大鼠均每日常规腹腔注射生理盐水,CX3CR1干预组向残腔内注射CX3CR1中和抗体进行处理。采用ELISA法检测血清中IL-6、IL-10、IL-1β、TGF-β水平,应用改良X线Norden评分检测骨骼肌微纤维,HE染色观察病理变化,免疫印迹及PCR检测股骨组织中细胞外信号调节蛋白激酶(Extracellular regulated protein kinase,ERK1/2)、丝裂原活化蛋白激酶(Mitogen activated protein kinase,MAPK)蛋白及mRNA表达。结果与健康组比较,模型组TGF-β、IL-1β、IL-10、IL-6等炎症因子含量均升高(P<0.05);与模型组比较,CX3CR1抑制组炎症因子含量降低(P<0.05)。与健康组比较,模型组随时间推移X线Norden评分升高(P<0.05);与模型组比较,CX3CR1抑制组X线Norden评分降低(P<0.05)。HE染色显示,健康组骨质完好;模型组可见大量炎性细胞浸润、灶性脓肿及坏死灶;CX3CR1抑制组大鼠的骨质明显改善,炎症反应降低。与健康组比较,模型组ERK1/2、MAPK蛋白及mRNA表达升高(P<0.05);与模型组比较,CX3CR1抑制组ERK1/2、MAPK蛋白及mRNA表达降低(P<0.05)。结论抑制CX3CR1可改善创伤性骨髓炎大鼠的疾病反应,可能与降低炎症反应、ERK/MAPK信号通路以及改善骨骼肌微纤维相关。
曹众李春燕鲁广生周琦石
关键词:创伤性骨髓炎炎症反应
熔融双组分超细纤维成纤技术研究进展
2024年
为深入探究熔融双组分复合纤维原纤化的超细纤维成形技术,介绍了共混纺丝和共轭纺丝2种复合纺丝技术及其在生产超细纤维时的原料及工艺,具体阐述了海岛型复合纤维和裂离型复合纤维开纤工艺及特点,分析了聚合物及工艺对复合纤维生产超细纤维的影响。综述了熔融复合纤维原纤化用到的化学溶剂开纤、水溶开纤、机械开纤等开纤技术。概述了用熔融复合纺丝技术生产的超细纤维材料在合成革、过滤与分离、医用防护、卫生健康等领域中的应用,提出了复合纺丝技术生产超细纤维的发展方向,并指出复合纤维有望通过成形技术实现原料多元化、纤维细旦化、材料功能化等方面的不断发展和创新,将推动相关产业朝着更加可持续和环保的方向发展。
朵永超宋兵张如全许秋歌钱晓明
关键词:双组分纤维超细纤维复合纺丝海岛型纤维

相关作者

倪石磊
作品数:68被引量:131H指数:7
供职机构:山东大学齐鲁医院
研究主题:急性脊髓损伤 磁共振成像 三叉神经痛 脊髓损伤修复 电纺丝
朱志国
作品数:176被引量:311H指数:10
供职机构:北京服装学院
研究主题:聚对苯二甲酸乙二醇酯 熔滴 阻燃 超细纤维 膨胀型阻燃剂
李飞
作品数:35被引量:5H指数:1
供职机构:北京信息工程学院传感技术研究中心北京市传感器重点实验室
研究主题:碳纳米纤维 催化剂先体 燃烧法制备 催化 碳纳米管
刘玉光
作品数:254被引量:1,139H指数:14
供职机构:山东大学齐鲁医院
研究主题:三叉神经痛 手术治疗 脑膜瘤 显微手术治疗 射频热凝术
马占营
作品数:92被引量:279H指数:9
供职机构:咸阳师范学院化学与化工学院
研究主题:光催化 TIO2 无机化学 光催化性能 共轭高分子