共查询到20条相似文献,搜索用时 0 毫秒
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Thierry Darmanin Elisabeth Taffin de Givenchy Sonia Amigoni Frederic Guittard 《Advanced materials (Deerfield Beach, Fla.)》2013,25(10):1378-1394
This review is an exhaustive representation of the electrochemical processes reported in the literature to produce superhydrophobic surfaces. Due to the intensive demand in the elaboration of superhydrophobic materials using low‐cost, reproducible and fast methods, the use of strategies based on electrochemical processes have exponentially grown these last five years. These strategies are separated in two parts: the oxidation processes, such as oxidation of metals in solution, the anodization of metals or the electrodeposition of conducting polymers, and the reduction processed such as the electrodeposition of metals or the galvanic deposition. One of the main advantages of the electrochemical processes is the relative easiness to produce various surface morphologies and a precise control of the structures at a micro‐ or a nanoscale. 相似文献
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Xiaoda Sun Viraj G. Damle Shanliangzi Liu Konrad Rykaczewski 《Advanced Materials Interfaces》2015,2(5)
The detrimental impacts of icing on transportation and power industries are well‐known. Inspired by natural systems that secrete a functional liquid in response to stimuli, this work introduces an anti‐icing coating that responds to surface icing by releasing antifreeze liquid. It consists of an outer porous superhydrophobic epidermis and a wick‐like underlying dermis that is infused with antifreeze liquid. The functionality of the new coating is validated through condensation frosting, simulated freezing fog, and freezing rain experiments. In the tested conditions, the introduced anti‐icing skin delays onset of frost, rime, and glaze accumulation at least ten times longer than anti‐icing superhydrophobic and lubricant impregnated surfaces. Furthermore, the coating delays onset of glaze formation ten times longer than surfaces flooded with a thin film of antifreeze. In each of the icing scenarios, the fundamental mechanisms responsible for antifreeze release and their relation to required antifreeze replenishment rates are described. 相似文献
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Luo SC Yu HH Wan AC Han Y Ying JY 《Small (Weinheim an der Bergstrasse, Germany)》2008,4(11):2051-2058
A method for coating functionalized poly(3,4-ethylenedioxythiophene) (PEDOT) on nonconductive substrates in aqueous solution allows the deposition of PEDOT thin layers on various substrates, including silica and polystyrene (PS) nanoparticles, siliceous mesocellular foam, and chitosan-alginate fibers. The surface property is tuned by controlling the monomer composition in the aqueous solutions. Using appropriate organic solvents to remove the PS cores of PEDOT-coated PS nanoparticles, hollow PEDOT particles with single holes and PEDOT capsules can be formed. 相似文献
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Weng B Liu X Higgins MJ Shepherd R Wallace G 《Small (Weinheim an der Bergstrasse, Germany)》2011,7(24):3434-3438
Inkjet printed polypyrrole (PPy) films with good uniformity and conductivity are fabricated from a stable, printable PPy nanodispersion, and the cytocompatability of these platforms is demonstrated using PC12 cells. This novel approach to fabricating PPy electrodes and films for tissue engineering and cell stimulation is particularly useful where microstructures are required. 相似文献
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A facile approach to superhydrophilic-superhydrophobic patterns in porous polymer films 总被引:1,自引:0,他引:1
Zahner D Abagat J Svec F Fréchet JM Levkin PA 《Advanced materials (Deerfield Beach, Fla.)》2011,23(27):3030-3034
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Mao Li Asit Patra Yana Sheynin Michael Bendikov 《Advanced materials (Deerfield Beach, Fla.)》2009,21(17):1707-1711
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聚噻吩及其衍生物热电材料研究进展 总被引:1,自引:1,他引:0
近来,聚合物热电材料因其成本低、资源丰富、热导率低等优势被认为是最有前途的热电材料之一。聚噻吩及其衍生物是研究较为广泛的一类聚合物热电材料。综述了近年来聚噻吩、聚噻吩衍生物以及聚噻吩基/无机复合热电材料在热电领域的研究进展。已有研究表明,聚噻吩及其衍生物热电材料具有高的Seebeck系数,其See-beck系数与电导率通常是此消彼长的关系。通过制备低维材料,与高电导率的无机纳米材料复合以及适度掺杂等方法可有效提高聚噻吩及其衍生物的热电性能。 相似文献
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Leif Nyholm Gustav Nyström Albert Mihranyan Maria Strømme 《Advanced materials (Deerfield Beach, Fla.)》2011,23(33):3751-3769
All‐polymer and paper‐based energy storage devices have significant inherent advantages in comparison with many currently employed batteries and supercapacitors regarding environmental friendliness, flexibility, cost and versatility. The research within this field is currently undergoing an exciting development as new polymers, composites and paper‐based devices are being developed. In this report, we review recent progress concerning the development of flexible energy storage devices based on electronically conducting polymers and cellulose containing composites with particular emphasis on paper‐based batteries and supercapacitors. We discuss recent progress in the development of the most commonly used electronically conducting polymers used in flexible device prototypes, the advantages and disadvantages of this type of energy storage devices, as well as the two main approaches used in the manufacturing of paper‐based charge storage devices. 相似文献
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Polypyrrole/multiwalled carbon nanotube (MWNT) composite films were electrochemically deposited in the presence of an ionic
surfactant, sodium dodecyl sulfate (SDS), acting as both supporting electrolyte and dispersant. The effects of the surfactant
and the MWNT concentrations on the structure of the resulting composite films were investigated. The electrochemical behavior
of the resulting polypyrrole/MWNT composite film was investigated as well by cyclic voltammogram. The effect of the additional
alternating electric field applied during the constant direct potential electrochemical deposition on the morphology and electrochemical
behavior of the resulting composite film was also investigated in this study. 相似文献
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Monodisperse Fe@Ag core-shell nanoparticles with relatively uniform Fe cores and Ag shells have been successfully fabricated by a seed mediated method in a two-step reducing process, and then characterized by electron microscopy techniques (HRTEM, EDX), X-ray diffraction (XRD), UV-vis spectroscopy,and magnetometry. The results demonstrate unique optical and magnetic properties for Fe@Ag core-shell nanoparticles. The surface plasmon resonance of Fe@Ag core-shell nanoparticles is red shifted as compared with that of pure colloidal nano-silver, while the plasmon band of Fe@Ag core-shell nanoparticles with thinner Ag shells is shifted to a longer wavelength. Fe@Ag core-shell nanoparticles have a narrow plasmon band and therefore sensitive plasmonic properties. The magnetism of Fe@Ag nanoparticles can be tuned from superparamagnetic to ferromagnetic by modifying the proportion between Fe and Ag contents. The multifunctional Fe@Ag core-shell nanoparticles have potential in optoelectronic, spintronic, and biomedicine applications. 相似文献
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在导电聚苯胺薄膜上电沉积n型Bi-Te合金薄膜,采用循环伏安、XRD、EDS和SEM等手段分别对电化学沉积过程和产物的结构、形貌及组成等进行了表征,研究了聚苯胺绝缘化处理前后Bi_2Te_3沉积层热电性能的变化,以及沉积电位对其结构和性能的影响.结果表明:在180℃保温3 h可大大降低聚苯胺薄膜的导电性;阴极电位在-125 mV与-340 mV之间变化时,Bi-Te合金中的Te含量呈近似抛物线变化,且在-125 mV达到最大值67.76%;Te含量不同也相应地改变了沉积层的组织结构和热电性能;基体的导电性影响聚苯胺薄膜的热电参数测试值,通过热处理消除基体的影响后,热电薄膜的塞贝克系数和导电率的测量值分别提高了47.6μV/K和6.86×10~4s/m,功率因子从热处理前的1.6×10~(-4)W/K~2m提高到处理后的14.3×10~(-4)W/K~2m. 相似文献
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Hao Huang Longhui Liao Zewen Lin Deng Pan Qu Nuo Ting-Ting Wu Yuan Jiang Hua Bai 《Small (Weinheim an der Bergstrasse, Germany)》2023,19(35):2301493
Porous materials with multiple hierarchy levels can be useful as lightweight engineering structures, biomedical implants, flexible functional devices, and thermal insulators. Numerous routes have integrated bottom-up and top-down approaches for the generation of engineering materials with lightweight nature, complex structures, and excellent mechanical properties. It nonetheless remains challenging to generate ultralight porous materials with hierarchical architectures and multi-functionality. Here, the combined strategy based on Pickering emulsions and additive manufacturing leads to the development of ultralight conducting polymer foams with hierarchical pores and multifunctional performance. Direct writing of the emulsified inks consisting of the nano-oxidant—hydrated vanadium pentoxide nanowires—generated free-standing scaffolds, which are stabilized by the interfacial organization of the nanowires into network structures. The following in situ oxidative polymerization transforms the nano-oxidant scaffolds into foams consisting of a typical conducting polymer—polyaniline. The lightweight polyaniline foams featured by hierarchical pores and high surface areas show excellent performances in the applications of supercapacitor electrodes, planar micro-supercapacitors, and gas sensors. This emerging technology demonstrates the great potential of a combination of additive manufacturing with complex fluids for the generation of functional solids with lightweight nature and adjustable structure-function relationships. 相似文献
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GZO/Ag/GZO多层薄膜制备、结构与光电特性的研究 总被引:1,自引:0,他引:1
采用射频磁控溅射和离子束溅射联合设备在玻璃衬底上制备出了具有良好附着性、低电阻率和高透过率的GZO/Ag/GZO(ZnO掺杂Ga_2O_3简称GZO)多层薄膜.X射线衍射谱表明GZO/Ag/GZO多层薄膜是多晶膜,GZO层具有ZnO的六角纤锌矿结构,最佳取向为(002)方向;Ag层是立方结构,具有(111)取向.在GZO层厚度一定的情况下,研究了Ag层厚度的变化对多层膜结构以及光电特性的影响.研究发现,当Ag层厚度为10nm时,3层膜的电阻率为9×10~(-5)Ω·cm,在可见光范围内平均透过率达到89.7%,薄膜对应的品质因子数值为3.4×10~(-2)Ω~(-1). 相似文献