نتایج جستجو برای: visible absorption

تعداد نتایج: 202127  

Journal: :Optics express 2014
Rüdiger Röttgers David McKee Christian Utschig

The light absorption coefficient of water is dependent on temperature and concentration of ions, i.e. the salinity in seawater. Accurate knowledge of the water absorption coefficient, a, and/or its temperature and salinity correction coefficients, Ψ(T) and Ψ(S), respectively, is essential for a wide range of optical applications. Values are available from published data only at specific narrow ...

Journal: :Chemical communications 2013
Maxim A Nasalevich Maarten G Goesten Tom J Savenije Freek Kapteijn Jorge Gascon

Correction for 'Enhancing optical absorption of metal-organic frameworks for improved visible light photocatalysis' by Maxim A. Nasalevich et al., Chem. Commun., 2013, 49, 10575-10577.

Journal: :Physical review letters 2003
Manish Chhowalla H Wang N Sano K B K Teo S B Lee G A J Amaratunga

Ultraviolet-visible absorption measurements of high purity and well separated carbon onion samples are reported. The results show that, after purification, absorption features from carbon onions match well with the interstellar UV spectrum. The measurements show that the absorption peak position remains constant at 4.55+/-0.1 microm(-1), and the width varies from 1.2-1.6 microm(-1), a key featu...

Journal: :Journal of Materials Chemistry C 2022

The highest efficiency of heavy metal-free visible-to-UV photon upconversion is achieved by employing a ketocoumarin sensitizer with strong visible absorption, weak UV and high intersystem crossing efficiency.

2008
Nicholas A. Moskovitz Mark Willman Nader Haghighipour Eric Gaidos

We present visible and near-infrared reflectance spectra and interpreted surface mineralogy for asteroid 10537 (1991 RY16). The spectrum of this object is without precedent amongst the Main Belt asteroids. A unique absorption band centered at 0.63 microns could be attributed to one of several mineralogies. Pronounced 1and 2-micron absorption bands suggest that the composition of 10537

Journal: :Nanoscale 2014
B Rösner D M Guldi J Chen A I Minett R H Fink

This study addresses a combination of a well-developed and mild dispersion method and high-quality arc discharge single-walled carbon nanotubes (SWCNTs) as starting materials. Thus, we advance in fabrication of transparent, conducting films with extraordinary low material loss during SWCNT processing. The starting material was characterized by means of thermogravimetric analysis, high-resolutio...

2014
Esther M. Sánchez-Carnerero Florencio Moreno Beatriz L. Maroto Antonia R. Agarrabeitia María J. Ortiz Bryan G. Vo Gilles Muller Santiago de la Moya

Circularly polarized luminescence (CPL) in simple (small, nonaggregated, nonpolymeric) O-BODIPYs (R)-1 and (S)-1 by irradiation with visible light is first detected as proof of the ability of a new structural design to achieve CPL from inherently achiral monochromophore systems in simple organic molecules. The measured level of CPL (|g(lum)|) in solution falls into the usual range of that obtai...

2016
Xing Zhang Chu-Ya Wang Li-Wei Wang Gui-Xiang Huang Wei-Kang Wang Han-Qing Yu

A series of BiOBrxI(1-x) solid solutions were explored as novel visible light-sensitive photocatalysts. These BiOBrxI(1-x) solid-solution photocatalysts grew into two-dimensional nanoplates with exposed (001) facets and possessed continuously modulated band gaps from 2.87 to 1.89 eV by decreasing the Br/I ratio. The photocatalytic activities of these samples were measured, and the samples exhib...

2014
Leny Yuliati Melody Kimi Mustaffa Shamsuddin

BACKGROUND The hydrothermal method was used as a new approach to prepare a series of Ag-doped Cd0.1Zn0.9S photocatalysts. The effect of Ag doping on the properties and photocatalytic activity of Cd0.1Zn0.9S was studied for the hydrogen production from water reduction under visible light irradiation. RESULTS Compared to the series prepared by the co-precipitation method, samples prepared by th...

2015
C. G. Schmitt J. D. All J. P. Schwarz W. P. Arnott R. J. Cole E. Lapham A. Celestian

Glaciers in the tropical Andes have been rapidly losing mass since the 1970s. In addition to the documented increase in temperature, increases in light-absorbing particles deposited on glaciers could be contributing to the observed glacier loss. Here we report on measurements of lightabsorbing particles sampled from glaciers during three surveys in the Cordillera Blanca Mountains in Peru. Durin...

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