We demonstrate a room-temperature operation of exciton-polariton optical devices with layer-by-layer assembled J-aggregate thin films of (DEDOC) cyanine dyes. Based on the fabrication results, the modifying DEDOC thin films are placed in a metal-dielectric mirror microcavity, and measured by angle-resolved reflection spectrum to observe the polariton states at room temperature.

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In this work, Raman spectroscopy has been applied to analyze the Raman fingerprint of graphene crystals. In addition, we manufactured the Cu (111) thin film on a sapphire (0001) substrate by using sputtering method. The graphene crystals grown on the Cu (111) thin film and a polycrystalline Cu foil by chemical vapor deposition. The result indicated that the graphene crystals grown on Cu (111) has “defect-free” morphology in Raman mapped image.

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We present a new type liquid salinity sensor combined with side-polished fiber and thin-film coatings. The sensing mechanism is based on lossy mode resonance (LMR) phenomenon. The sensitivity of D-LMR type liquid salinity sensor is analyzed for different liquid salinities of salt water. The sensitivity of 0.837 nm/SU can be obtained for D-LMR type liquid salinity sensor.

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Large single-crystal graphene flakes are grown on Cu foils by using CVD. The effect of H2 etching on the small graphene seeds on the initial growth stage is investigated. Transistors with high mobilities are also demonstrated in this report.

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Two kinds transparent conductive oxide films, AZO and GZO, were deposited by radio-frequency sputtering on NBK7 glass substrates. We measured and compared the temperature-dependent resistivity and residual stress properties. The results show that the resistivity of AZO thin films decrease with increasing the RF power, but that of GZO is increasing. The residual stress values of AZO thin films increase with increasing the RF power in the range of 60-100 W, but the residual stress values of GZO thin films decrease. Both resistivity and compressive stress in AZO and GZO thin films decrease as the heating temperature increases from room temperature to 90℃.

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We developed a process to fabricate a top-illuminated organic solar cell onto the carbon fibers and carbon nanotubes (CFs&CNTs) substrate using a organosilicon compounds, poly(dimethylsiloxane) (PDMS) to smooth the substrate.

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The Niobium Oxide thin films were deposited by DC- ,and high power pulsed reactive magnetron sputtering. The refraction indices, extinction coefficients, surface roughness of NbOx films were analyzed via spectroscopy and atomic force microscope.

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Nb2O5-SiO2 composite films and rugate filter were prepared by fast-alternative bipolar-pulsed magnetron sputtering using niobium and silicon targets. The optical properties, surface roughness and stress behaviors of composite films and rugate filter were investigated by spectrophotometer, atomic force microscope and phase-shift Twyman-Green interferometer.

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Titanium oxide (TiO2) films were deposited by the plasma-assisted DC sputtering in this study. The effects of DC power, current of plasma, the oxygen partial pressure on the optical properties of TiO2 films were investigated.

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A fast and cost-effective approach to measure the surface roughness of thin films coated on D-shaped fibers is presented. We proposed a modified Michelson microscopic interferometer combined with 2D fast Fourier transform (FFT) method to measure the surface roughness of thin films and D-shaped fibers. The results show that the surface roughness of D-shaped fiber without coating is 1.19 nm and the surface roughness is 1.11 nm after AZO coating.

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Flexible organic light-emitting diodes (OLEDs) have drawn attention due to their potential applications in wearable optoelectronics. In this study, a novel flexible transparent conductive oxide which combining molybdenum and GZO (MGZO) has been developed. Blue phosphorescent OLEDs based on flexible MGZO anode achieved high efficiencies of 21.3% and 49.2 lm/W.

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The (200) oriented CsI films with Tl and Rb doping have been grown on transparent substrate. High brightness spot induced by x-ray on back side of substrate was observed. The wavelength of photoluminescence peak is 512 nm. The I LI x-ray absorption near edge show the position of hole captured.

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The unintentionally doped and bismuth doped zinc oxide was prepared by spray pyrolysis. The crystalline quality shows the (002) and (101) planes. The bismuth doped sample shows the improved photocatalytic activity through the photodegradation of congo red under UV-light irradiation. High temperature treatment was applied to study the annealing effect.

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A simple and excellent method, reflection coefficient monitoring, has been demonstrated for multilayer thin-film deposition. Compared with other optical monitoring methods, the reflection coefficient monitor has more uniform monitoring sensitivity and better error compensation ability. This provides a much better way to decrease the defect rate of optical coating production.

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We fabricate a Silicon thin film by metal-assisted chemical etching (MacEch). Generally, it is hard to make a large size silicon thin film. Here we demonstrate a low cost and simple method to do silicon thin film process. Thus, this method is competitive for commercial applications

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In this research, FTO thin films were prepared by the spray pyrolysis technique on glass substrate at temperatures from 440℃ to 480℃.Dehydrate stannous chloride and ammonium fluoride were used as sources for tin and fluorine, respectively. The fluorine doping level ranging from 1at% to 90at% in our samples is adjusted to optimize their optical and electrical properties. After the films were sintered, the crystal structure was investigated by x-ray diffraction, the mobility and carrier concentration were determined by Hall Effect measurement, the optical transmittance was analyzed in visible light region, and the film thickness measurement by Spectral interference.

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The composition-dependent absorption and stress of TiO2-MgF2 composite films prepared by electron-beam evaporation at a substrate temperature of 200 °C were investigated with an spectrophotometer, spectroscopic ellipsometer, and phase-shifting Fizeau interferometer, respectively. The various compositions were obtained by mixing the starting materials of Ti3O5 and MgF2 in a crucible.

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We measure the optical properties of square beams generated by liquid crystal spatial light modulator (LCSLM). The Gaussian beam transforms into square beams with four sizes. Optical profiler is used to record the details in the square beams. The polarization of these beams is examined as well.

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In order to keep low temperature and less than 120°C in deposition process, we proposed the method for completely continuous and highly conductive thick copper films with the growth rate per cycle varied near 800nm on the substrate surfaces and then for cooling rate 0.5°C/sec on metallic flexible substrate.

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This paper presents an optimization design of binoculars telescope system in the visible band for 7° full field of view (FOV). The least damped square method is used to optimize the aberrations. We used ZEMAX software as system simulation tool. After optimization design, the spot size is 21.37 μm. The field curvature is ± 0.02mm and distortion is ± 2.5%. The total length is 199.8 mm for the binocular system.

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In this study, to improve the p-type conductivity Ag-Cu codoped ZnO thin films on the silicon substrate were prepared by RF magnetron sputtering system. First of all, we found the 1at%Cu-doped ZnO thin film prepared at 650℃possess the best p-type conductivity .Base on this result , Ag-Cu codoped ZnO thin films more sintered to investigate their structure by X-ray diffraction and their electronic properties via Hall Effect measurement.

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Recently, exciplex had drawn attention because of its potential for efficient electroluminescence or being an emitting host in organic light-emitting diodes (OLEDs). In this study, we successfully demonstrated that efficient blue, green, and red PhOLEDs with same exciplex host achieve maximum power efficiencies of 37.9 lm/W, 42.6 lm/W, and 5.4 lm/W, respectively.

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Flexibility is one of the biggest features of OLED. However, there is a big problem brought by the ITO anode. ITO will crack when the substrate is bent in a large angle and this might result in decreasing the conductivity. Conductive Polymer, PEDOT:PSS, has lots of advantages in ITO-free devices.

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A suite of multi-physics simulation tools of low-temperature plasma physics and chemistry for material processing is presented. The plasma fluid modeling coupled with a gas flow solver using a unique temporal multi-scale algorithm has employed for the chamber-scale simulation, in which the modularized solvers are parallelized using high performance computing.

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CsI is an excellent scintillator, whose fluorescence response is good for x-ray and γ-ray, and it can convert invisible radiation into visible light. In this study, it is mainly focused on fluorescent properties of cesium iodide films doped sodium (CsI:Na). The CsI film will be coated by using the protective Al layer to resist moisture better to enhance the luminous efficiency of the film.

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We report on extensive structural and optical studies of a variety of pure and Re-, Au-, Fe-doped molybdenum disulfide (MoS2) single crystals which grown by chemical vapor transport (CVT) method. In order to compare structural properties of crystals with different doping we conducted X-ray diffraction (XRD) and transmission electron microscopy (TEM) measurements. For optical characterization we used Raman spectroscopy, piezoreflectance (PzR), electrolyte electroreflectance (EER) and photoconductivity (PC).

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We proposed a new method based on the moiré technique and Talbot effect to measure the angular displacement. The experimental results demonstrate that the measurement range of our system can achieve plus and minus 6 dgree. Considering the high-frequency noise, the measurement resolution of the system is about 0.36 arcsec.

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