The transparency of silicon in the infrared region enables design nano/microstructures for implementation devices to harvest (IR) part solar spectrum. Herein we report...

We have measured continuous-wave (cw) photoinduced absorption (PA) spectra of PbS quantum dot (QD) films with four different sizes over a spectral range of 0.25-0.5 eV at T=10 K. The PA spectrum shows a strong asymmetric IR absorption peak (IR-PA). Both the peak position and shape of this IR-PA indicate distinct confinement dependence. Combining with results of interband transitions and Stokes ...

The Antarctic Plateau provides the best terrestrial sites for infrared (IR) and submillimetre (sub-mm) astronomy. In this paper we examine the relative importance of temperature, aerosol content and precipitable water vapour to determine which parameters have the greatest influence on atmospheric transmission and sky brightness. We use the atmospheric modelling program MODTRAN to model the obse...

Molecular and electronic structures of Ir2(1,8-diisocyanomenthane)4n+ (Ir(dimen)n+) complexes have been investigated by DFT for n = 2, 1, 0 (abbreviated 2+, 1+, 0). Calculations reproduced the experimental structure of 2+, ν(C≡N) IR, and visible absorption spectra of all three oxidation states, as well as the EPR spectrum of 1+. We have shown that the two reduction steps correspond to successiv...

The IR and UV absorption spectra of the ammonium salt of cupferrone and manganese, cobalt, nickel, copper and zinc divalent cupferrate complexes are investigated. The IR absorption bands identified in the region 400-4000 cm '1 are given and assigned, especially those three related to M -0 vibrations. In the UV absorption spectrum of the cupferrone m etal complexes a characteristic shift in the ...

We discuss considerations for preparing observations using spatial scans with WFC3 for two categories of intended reader: 1) the general observer preparing an observation, and 2) a contact scientist reviewing a phase 2 proposal. Coincidentally and conveniently, the IR spectroscopic Exposure Time Calculator’s “brightest pixel” value in electrons accurately predicts (within 5%) the peak value of ...

The exopolysaccharide (EPS) separated from the entomopathogenic fungus Metarhizium anisopliae was determined by gel permeation chromatography to be homogeneous. The high-performance anion-exchange chromatography with pulsed-amperometric detection (HPAE-PAD) showed a content of monosaccharides D-galactosamine and D-fucose at a molar ratio of about 2:1. The results obtained from Fourier transform...

Infrared radiations are radiations below (infra) visible spectrum. This emergent dual use technology field is fast emerging amongst the most ubiquitous ones. It spans from low-end automatic supermarket door openers to high-end space based detectors used to detect nuclear tests, missiles and intra galactic radiations. At the heart of this technology is the IR detector. Objective of this report i...

The infrared (IR) spectrum of solid C60 exhibits many weak vibrational modes. Symmetry breaking due to C isotopes provides a possible route for optically activating IR-silent vibrational modes. Experimental spectra and a semi-empirical theory on natural abundance and C-enriched single crystals of C60 are presented. By comparing the experimental results with the theoretical results, we exclude t...

Determination of The transmittance values measured in IR reflectionabsorption (RA) spectra were used to determine the optical constants of dielectric films laid on solid substrates. In order to obtain the optical constants of polystyrene films laid on steel we used dispersion analysis. In this case, the optical constants are obtained from IR spectrum recorded at a single incidence angle. The us...