We present an experimental demonstration of third harmonic generation from Fano-resonant all-dielectric metasurfaces. The metasurfaces have a conversion enhancement factor of 1.5×105 and an absolute conversion ef...
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In this talk, I will discuss our recent efforts to develop purely dielectric metamaterials possessing low absorption loss at optical frequencies. I will discuss implementations ranging from wavefront control to high Q...
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It is predicted that wearable technology will result in a revolution in the world. However, the advancement has been limited by a critical challenge, i.e.,the conventional power systems can not satisfy the requirement...
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It is predicted that wearable technology will result in a revolution in the world. However, the advancement has been limited by a critical challenge, i.e.,the conventional power systems can not satisfy the requirements of lightweight, miniature and integratable in wearable electronics. We have developed a new family of fiber-shaped energy devices including solar cells, electrochemical capacitors and lithium-ion batteries that share many advantages including lightweight, thin and integratable compared with their traditioinal planar counterparts. In particular, they can be woven into various flexible structures through the low-cost textile technology. The current study focuses on the further improvement of properties, development of methods for scaling up and realization of real products as well as the integration of more functionalities such as sensing and luminescence.
Synergistic effect in network formation of nylon-6 （PA6） nanocomposites containing one dimensional （ID） multi-walled carbon nanotubes （CNTs） and two dimensional （2D） layered double hydroxide （LDH） platelets ...
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Synergistic effect in network formation of nylon-6 （PA6） nanocomposites containing one dimensional （ID） multi-walled carbon nanotubes （CNTs） and two dimensional （2D） layered double hydroxide （LDH） platelets on improving the mechanical properties has been studied. Mechanical tests show that, with incorporation of 1 wt% LDHs and 0.5 wt% CNTs, the tensile modulus, the yield strength as well as the hardness of the ternary composite are greatly improved by about 230%, 128% and 110% respectively, as compared with neat PA6. This is mainly attributed to the unique, strong interactions between the CNTs and the LDHs as well as the jammed network-like structure thus formed between the nanofillers, as confirmed by the morphological observations. As compared with the binary nanocomposites, a much enhanced solid-like behavior in the terminal region of the rheological curves can clearly be observed for the ternary system, which also indicates the formation of a percolating filler network.
Portable and foldable electronic devices had been shown to be highly desired in the current life and further dominate the future *** this end,it becomes critically important to develop matchable energy storage systems...
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Portable and foldable electronic devices had been shown to be highly desired in the current life and further dominate the future *** this end,it becomes critically important to develop matchable energy storage systems such as electrochemical supercapacitors to power them.
Correction for ‘Interface structure, precursor rheology and dielectric properties of BaTiO3/PVDF–hfp nanocomposite films prepared from colloidal perovskite nanoparticles’ by Y. N. Hao et al., RSC Adv., 2017, 7, 32...
Correction for ‘Interface structure, precursor rheology and dielectric properties of BaTiO3/PVDF–hfp nanocomposite films prepared from colloidal perovskite nanoparticles’ by Y. N. Hao et al., RSC Adv., 2017, 7, 32886–32892.
Portable and foldable electronic devices had been shown to be highly desired in the current life and further dominate the future *** this end, it becomes critically important to develop matchable energy storage system...
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Portable and foldable electronic devices had been shown to be highly desired in the current life and further dominate the future *** this end, it becomes critically important to develop matchable energy storage systems such as electrochemical supercapacitors to power them. The supercapacitor should be lightweight,flexible and stretchable, and could be easily integrated with high performances. However, the available supercapacitors typically appear in a heavy and rigid plate which cannot meet the above requirements. Herein,novel supercapacitor fibers in a coaxial structure have been developed from aligned carbon nanotube fiber and sheet which functioned as two electrodes. The unique coaxial structure enables a rapid transportation of ions between the two electrodes with a high maximum discharge capacitance of 59 F/g, and the high electrochemical performance has been well maintained at high currents.
In this work, a fluorescent monomer 2-（9-carbazolyl） ethyl vinyl ether（CEVE） was synthesized in our lab, and its photo-induced living cationic copolymerization behavior with isobutyl vinyl ether（IBVE） was invest...
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In this work, a fluorescent monomer 2-（9-carbazolyl） ethyl vinyl ether（CEVE） was synthesized in our lab, and its photo-induced living cationic copolymerization behavior with isobutyl vinyl ether（IBVE） was investigated in detail using diphenyliodonium chloride（DPICl）/2,2-dimethoxy-2-phenylacetophenone（DMPA） and zinc bromide（Zn Br2） initiating system in dichloromethane solution at 5 °C, -5 °C, and -15 °C, respectively. The living nature of this copolymerization system was confirmed by adding fresh comonomer method after the copolymerization almost finished. In addition, the obtained fluorescent copolymer poly（IBVE-co-CEVE） has a low glass transition temperature（Tg）, below -10 °C.
Correction for ‘A dual stimuli responsive fluorescent probe carrier from a double hydrophilic block copolymer capped with β-cyclodextrin’ by Guang Yang et al., Polym. Chem., 2015, 6, 3382–3386.
Correction for ‘A dual stimuli responsive fluorescent probe carrier from a double hydrophilic block copolymer capped with β-cyclodextrin’ by Guang Yang et al., Polym. Chem., 2015, 6, 3382–3386.
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