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| 1 | 光电技术在纺织中的应用显示文摘到目前为止,几乎所有光电设备的基本单元都是硅质半导体,其坚硬的质地限制了它的广泛应用。现在,柔性聚合物半导体为其开拓了新的领域,膜和纤维的应用正变得极具潜力。随着纤维和纺织品在光电池中应用的不断成熟,发展前景将十分广阔。基于纺织品的光电产品极大地拓宽了其应用领域,如太阳能技术产品、柔性光电技术产品等。综述了光电技术和设备,以及基于纤维和纺织品的高性能光电产品。 | A.C.Bedeloglu Y.Bozkurt A.Demir 王鹏 | 2010 | 国际纺织导报2010,38,11: | 2 |
| 2 | Effect of thulium substitution on conductivity and dielectric belongings of nanospinel cobalt ferrite显示文摘The CoTmx Fe2-x O4(x≤0.1) NPs were synthesized sonochemically.X-ray powder diffraction patterns and TEM images of the samples prove their chemical purity and cubic structure-morphology,respectively.Some substitution ratio of thulium ions to cobalt ferrites have an important effect on the characteristic evaluation of both electrical and dielectric characteristic measured at frequencies up to 3.0 MHz between room temperature and 120℃.Since the thulium substitution has a very strong effect on the characteristic evaluation of both electrical and dielectric properties of cobalt-ferrite samples,four substitutio nal ranges-none,small,medium and high were determined for the interpretation of contribution of thulium ratio to ac/dc conductivity,dielectric constant,dielectric loss and tangent loss.Conductivity increases with the incremental frequencies,in general depending on a variety of tendencies of both temperature and substitutional Tm ratios while the activation energy varies with a high dependency to the regional level of Tm substitution in Co-ferrites NPs.The Arrhenius graph appears to provide us with a single activation energy much higher than 400 meV for x=0.02,which can be attributed to electron hopping mechanisms,apart from other substituted spinel ferrites. | B.Unal M.A Almessiere A.Demir Korkmaz Y.Slimani A.Baykale | 2020 | Journal of Rare Earths2020,38,10: | 2 |
| 3 | 交缠纱工艺的发展和现状显示文摘将一束短纤维约束成纱的主要内聚力是纤维之间的摩擦,纤维长度的随机分布以及加在纤维上的捻度增加了内聚力,使成纱能够承受拉力,在形成纱和织物的过程中,以及使用过程中,不论是衣着还是工业用途情况均是如此。然而由于长丝的单一平行排列方式。 | A.Demir 于正书 | 1991 | 国外纺织技术(纺织分册)1991,,3: | 1 |
| 4 | Conductivity Study of Polyaniline-Cobalt Ferrite(PANI-CoFe_2O_4) Nanocomposite显示文摘In this investigation,the structural and electrical properties of nanocomposites of polyaniline(PANI) and cobalt ferrite synthesized by hydrothermal route are reported for the first time(with weight ratios of CoFe_2O_4/PANI 1:2 and 2:1).Synthesized nanomaterials have been characterized by XRD,FT-IR,SEM and TEM techniques.FT-IR results confirm the presence of CoFe_2O_4 and PANI in the samples.Their detailed conductivity measurements have been investigated.It has been found that PANI has a more effective conducting mechanism in CoFe_2O_4-PANI composites.These results are also consistent with the change in AC conductivity orders in composites. | E.E.Tanriverdi A.T.Uzumcu H.Kavas A.Demir A.Baykal | 2011 | Nano-Micro Letters2011,3,2: | 1 |
| 5 | Electrical and dielectric properties of Ni_(0.5)Co_(0.5)Ga_(x)Fe_(1.8-x)O_(4)(x≤1.0)spinel ferrite microspheres显示文摘Microspheres of Ni_(0.5)Co_(0.5)Ga_(x)Fe_(2-x)O_(4)(x≤1.0)microsphere spinel ferrites(NiCoGaFe-MSFs)and carbon spheres were prepared via a hydrothermal technique.The micro structure of microspheres was investigated through scanning and transmission electron microscopy(SEM and TEM),respectively,and X-ray diffraction(XRD).The electrical and dielectric properties of NiCoGaFe-MSF at temperatures ranging from20 to 120℃(between 293,1×10^(3)and 393.1×10^(3))for f≤3.0 MHz were systematically studied as a result of 3D graphical drawing of the data obtained from an impedance analyzer.Relevant parameters such as ac/dc conductivity,dielectric loss,dielectric constant,activation energy,dissipation factor and Cole-Cole impedance spectra were extensively evaluated for various Ga ion mole ratios in the substitution where x≤1.0.We notice that the ac conductivity mostly obeys exponential power law rules,which vary significantly with the substitution ratios of Ga ions.Impedance analyses confirm that differences in conduction mechanisms in NiCoGaFe-MSFs are mainly due to grain-to-grain boundaries related to Ga ion substitution ratios.The change in dielectric constant of NiCoGaFe-MSFs is strongly dependent on the substitution rates and results in a normal dielectric distribution with frequency.The tangential loss for all micro spheres is observed to vary with measured temperatures and their frequency dependencies can be attributed to the conduction mechanism similar to Koop’s phenomenological model.It is clearly seen that the formation of semicircles is dominated by all the NiCoGaFe-MSFs and the diameter of the semicircles mostly decreases with increasing temperature,as evidence of a temperaturedependent relaxation mechanism. | S.Akhtar M.A.Almessiere B.Unal A.Demir Korkmaz Y.Slimani N.Tashkandi A.Baykal A.Ul-Hamid A.Manikandan | 2023 | Journal of Rare Earths2023,41,2: | 1 |
| 6 | 交络法纵横谈——交络喷嘴结构及其作用机理显示文摘合成纤维长丝,不论是变形加工或未变形加工的,其单丝之间均缺少抱合力。加捻、上浆以及交络是为这些长丝提供理想抱合性的三种新方法。因为加捻和上浆工艺的成本分别比交络工艺高9倍和7倍。 | A.Demir 黄硕成 | 1991 | 国外纺织技术(化纤.染整.环境保护分册)1991,,6: | 0 |
| 7 | TYT设备对PET变形纱可染性能的测定显示文摘变形纱的染料上染能力与其力学性能之间有着特定的关系。变形纱测试仪(TYT)通过测量完全卷曲回复或简单回复来描述纱线几何结构 ,并通过测量收缩反映纱线的结晶结构 。 | E.nsal A.Demir 罗艳 | 2001 | 国际纺织导报2001,29,2: | 0 |
| 8 | AC susceptibility and FC-ZFC magnetic properties of SrTb_(x)Fe_(12-x)O_(19) and SrTm_(x)Fe_(12-x)O_(19) hexaferrites:a comparative study显示文摘In this comparative study,Tb and Tm substituted Sr-hexafe rrites(HFs) with the chemical compositions of SrTb_(x)Fe_(12-x)O_(19) and SrTm_(x)Fe_(12-x)O_(19)(x=0.00,0.02 and 0.04) were fabricated via citrate sol-gel approach.The AC susceptibility and FC-ZFC magnetization were investigated.The product structure and morphologies were also investigated via XRD,TEM and SEM along with EDX.Measurements of temperature dependence of magnetization M-T and AC magnetic susceptibility versus temperature were carried out.The various synthesized HFs displayed ferrimagnetic behavior within 10-325 K.At lower temperatures,super-spin glass-like behavior was noticed.Neel-Arrhenius and Vogel-Fulcher models were employed to explore the experimental data of AC susceptibility. | Y.Slimani M.A.Almessiere A.Demir Korkmaz A.Baykal I.Ercan | 2021 | Journal of Rare Earths2021,39,8: | 0 |
| 9 | Structural,morphological and magnetic properties of(Ni_(0.5)Co_(0.5))[Ga_(x)Gd_(x)Fe_(2-2x)]O_(4)nanoparticles prepared via sonochemical approach显示文摘The impact of Ga^(3+)and Gd^(3+)co-substitution on different types of behavior of Ni-Co nanospinel ferrites(NSFs),(Ni_(0.5)Co_(0.5))[Ga_(x)Gd_(x)Fe_(2-2x)]O_(4)(0.000≤x≤0.025),was investigated.NSFs were fabricated through ultrasound irradiation.The structure,composition,and spherical morphology of all products were verified by numerous characterization techniques such as X-ray diffraction(XRD),scanning and transmission electron microscopes(SEM and TEM),and selected area electron diffraction(SAED).Mossbauer spectra are composed of two ferromagnetic sextets and one paramagnetic doublet.These spectra were fitted to extract hyperfine parameters of the doped samples.Both sublattices'hyperfine magnetic field decreases with substitution.The isomer shift values show that the Mossbauer spectra are composed of magnetic Fe^(3+)sextets.The magnetization measurements at variable magnetic field(M-H)were investigated via a vibrating sample magnetometer(VSM)at temperatures(T)from 300 to 10 K.All NSFs disclose ferrimagnetic behavior at both 300 and 10 K at which they are soft and hard,respectively.We determined that the remanence magnetization(M_(r)),saturation magnetization(M_(s)),and magneton number(n_(B))decrease with increasing Ga^(3+)and Gd^(3+)ions contents.The reduction in these values is predominantly recognized to be the impact of cation redistribution and surface spins on tetrahedral(T_(d))and octahedral(O_(h))sites.As the Ga^(3+)and Gd^(3+)contents increase,the coercivity(H_(c))is also found to decrease. | Y.Slimani M.A.Almessiere A.Demir Korkmaz A.Baykal M.A.Gondal H.Güngünes Sagar E.Shirsath A.Manikandan | 2023 | Journal of Rare Earths2023,41,4: | 0 |