This study focuses on determining the overall effective enhancement around the nanostructures by far-field measurement, as gold paired-strips nanoantennas are sitting on a glass substrate in the air. From the average electric field 2D maps, the near-field enhancement could reach 1.25 to 3.2 times.

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InGaN light-emitting diode (LED) with nano-membranes structures were fabricated through a laser scribing process and an electrochemical wet etching process. A heavily Si-doped GaN:Si layer acted as a sacrificial layer was grown below the InGaN LED structure for following lateral wet etching process. The GaN:Si sacrificial layer can be selectively wet etching by using the oxalic acid solution. Then, the 0.3μm-thick free-standing InGaN membranes has been fabricated and analyzed. Peak wavelengths and linewidths of the photoluminescence spectra were measured at 449nm/29.6nm for conventional LED and 425nm/18.4nm for the InGaN membrane, respectively. Peak wavelength of the electroluminescence spectrum of InGaN membrane was measured at 451nm that have potential for the flexible optical device applications.

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In this study, a tunable sensor with a Fano resonance metamaterial fabricated on the flexible polydimethylsiloxane (PDMS) substrate has been demonstrated. With stretching the PDMS substrate, the working wavelength and sensitivity of the plasmonic sensor can be controlled and optimized instantly by manipulating the geometry of the Fano resonace metamaterial.

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The nano-whisker (NWs) and nano-rod (NRs) of ITO deposited with oblique evaporation method has been investigated optically in nitride-based device. This hybrid structure of ITO nano-structure above ZnO medium enhances anti-reflection in the range between 365 and 800 nm.

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In this work, we theoretically calculated the temperature dependence of permittivity of metal, based on this information we studied how is temperature changed over time when a gold nanoparticle is excited by incident electromagnetic wave. we believe this work is very important to help us have a correct picture of process of light interacts with metals.

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We investigate the interactions of laser beam with an azo dye-doped nematic liquid crystal containing micron-sized colloids by utilizing unfocused and focused laser beams. Manipulation of colloids caused by unfocused and focused laser beams is further studied.

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The coupling behaviors of a radiating dipole with localized surface plasmon (LSP) resonance modes induced on an Ag protrusion into GaN are numerically studied. The protrusion structure has the advantages of relatively higher radiated power enhancement in the blue-green spectral range and relatively lower fabrication cost from an application viewpoint.

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Recently, single gyroid has attracted attention owing to its applications in photonic crystals and meta-materials. In this study, we introduce a new method to analyze the chirality of the structure and demonstrate high correlation between the chiral geometry and chiroptical properties of gyroid network.

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We investigated that surface plasmon polaritons(SPPs) occur by increasing the length of rectangle. We designed the asymmetric period rectangle array to induce the phase retardation. By the optimization of the period and the length of rectangle, the Figure-Of-Merit(FOM) can be reached 20.8 /RIU and 48.92 /RIU by phase-based SPPs and LSPR in simulation.

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ZnO nanorod arrays with length of 300 nm were prepared by hydro-thermal method. Tungsten oxide was inserted between PEDOT and gold electrode to further improve device performance. Inverted light emitting and photovoltaic devices with configuration of ITO/ZnOnanorods/ P2-PF6/ active layer/PEDOT:PSS/WO3/Au showed better device performance compared with those using ZnO thin film.

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We report our currently research on numerically results of optical bistability at low input switching intensity based on Fano resonances available in double-layer nonlinear slab waveguide gratings with narrow slits. Depending on shape of resonances, wavelengths of operation, various switching intensities, contrast, and bandwidth of optical bistabilities are observed.

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The broadband surface plasmon-enhanced photoluminescence from various organic dye molecules with different spectral bands is realized across the visible light regime, by coating the dye on an annealed AgOx thin film. The results provide a low-cost and efficient method to fabricate large-area full-color organic light emission devices with plasmonic enhancement.

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