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Excitonic effects from geometric order and disorder explain broadband optical absorption in eumelanin
geometric order disorder explain broadband optical absorption melanin
2014/9/24
Eumelanin is a ubiquitous biological pigment, and the origin of its broadband absorption spectrum has long been a topic of scientific debate. Here, we report a first-principles computational investiga...
Coherent quantum transport in disordered systems: I. The influence of dephasing on the transport properties and absorption spectra on one-dimensional systems
quantum transport in disordered systems dephasing on the transport properties absorption spectra one-dimensional systems
2014/9/24
Excitonic transport in static-disordered one dimensional systems is studied in the presence of thermal fluctuations that are described by the Haken–Strobl–Reineker model. For short times, non-diffusiv...
On-line Incorporation of Cloud Point Extraction in Flame Atomic Absorption Spectrometric Determination of Silver
Cloud point extraction silver dithizone on-line
2010/4/16
A cloud point extraction method was incorporated into a flow injection system, coupled with flame atomic absorption spectrometry, for determination of trace amounts of silver. The analyte in the aqueo...
Ultrafast extended x-ray absorption fine structure„EXAFS…—theoretical considerations
extended x-ray absorption fine structure EXAFS… —theoretical considerations
2014/9/24
Inspired by the recent experimental demonstration of ultrafast x-ray absorption spectroscopy, we present a framework for the calculation of extended x-ray absorption fine structure~EXAFS!spectra on th...
Chirped pulse enhancement of multiphoton absorption in molecular iodine
Chirped pulse enhancement multiphoton absorption molecular iodine
2014/9/24
Chirp effects on three photon absorption yields in I2 vapor are investigated using femtosecond pulses with center wavelengths in the region 550–600 nm. Enhancements of as much as a factor of 3 are obs...