We demonstrate a kind of in‐cell solution‐processed broadband circular polarizer made liquid crystal polymer and photo‐aligned on top, using the coating technique chemical treatment. The transmittance reflectance spectrum shows high ambient contrast ratio (ACR) improvement for light‐emitting display system.

The polymer nanocomposites (PVA-ZnO) were prepared by adding different concentrations nanoparticles with weight ratios (0, 1, 3, 5, 7 wt %) in a polyvinyl alcohol mixture using the casting method for studying their optical characteristics. results of transmittance and absorbance spectra recorded wavelength range (190-1100) nm. effect ratio ZnO on parameters (transmittance, absorption coefficien...

Contemporary nanostructured transparent electrodes for use in solar cells require high transmittance and high conductivity, dictating nanostructures with high aspect ratios. Optical haze is an equally important yet unstudied parameter in transparent electrodes for solar cells that is also determined by the geometry of the nanostructures that compose the electrode. In this work, the effect of th...

A small set of independent variables generally seems to suffice when attempting to describe the spectral response of a vegetation canopy to incident solar radiation. This set includes the soil reflectance, the single-scattering albedo, canopy transmittance, reflectance and interception, the portion of uncollided radiation in the total incident radiation, and portions of collided canopy transmit...

The optical constants of erbium (Er) films were obtained in the 3.25-1580 eV range from transmittance measurements performed at room temperature. Thin films of Er were deposited by evaporation in ultra high vacuum conditions and their transmittance was measured in situ. Substrates consisted of a thin C film supported on a grid. Transmittance measurements were used to obtain the extinction coeff...

The translucency of comparable shades of five dental porcelains was determined. Both direct transmittance and total transmittance were measured at wavelengths of 400-700 nm. For 1 mm of porcelain, the values for direct transmittance were low and averaged 0.13 percent, whereas the values for total transmittance averaged 26.8 percent. Transmittance increased with increasing incident wavelength. T...

The reduction of CO2 and other greenhouse gas emissions is an important driving force for the development of modern engines. Especially in the transport sector, the use of alternative fuels like methane, the main component of compressed natural gas (CNG), is an applied measure to achieve this goal. This work describes the development of an optical measurement system for accurate quantification ...

Single crystals of potassium para-nitrophenolate were successfully grown by the slow evaporation method with dimension of 25x10x7 mm 3 . Proton NMR spectrum was recorded to elucidate the molecular structure. Fourier transform infrared (FTIR) FT-Raman spectral studies have been performed to identify the functional groups. Structural analyses were carried out by powder x-ray diffraction pattern. ...

Abstract Broadband, high resolution, and rapid measurements of dual-comb spectroscopy (DCS) generate a large amount data stream. We numerically demonstrate significant compression DCS spectra by using compressive sensing technique. Our numerical simulation shows rate more than 100 with 3% error in mole fraction estimation mid-infrared (MIR) two molecular species broadband (~ 30 THz) resolution ...

A flexible broadband terahertz modulator based on a strain-sensitive MXene material is reported. shown to have high wave absorption through experimental testing of various substrate samples. Results show that the THz signal transmission increases with increasing stretching degree, which differs obviously from pure PVAc substrates. Analysis time-domain spectrum and electrical characterization in...