The 20 principal amino acids from blood serum or from the hydrolysis of proteins are separated in a few hours, and their concentrations are determined automatically by light-absorption methods.
In order to overcome these LT problems and to increase light absorption, new method based on excitation of surface plasmon [5] resonance via scattering from noble metal nano-structures was proposed by Catchpole and Polman [6].
To broaden their light absorption range, various methods including dye sensitizing [4], metal doping [5] non-metal doping [6, 7], and noble metal decorating [8] have been developed.
Possible causes for this difference in BC and EC concentrations could be the presence of fine particles that are "dark", differences in measuring methods, and light absorption by metals.
There are many methods to enhance light absorption in active regions, such as adjusting junction positions or lengths [13, 14], employing inclined NWs [15], decorating the active region with metal particles [16], or fabricating the heavily doped regions with high bandgap materials [17].
The optical method applies UV light absorption by two LEDs of different wavelengths.
The J ph generated from different structures was calculated from the light absorption based on the finite-element method (FEM).
Metals have long been identified and classified by colorimetric methods due to their light absorption properties, which lead to rich and highly characteristic optical transitions.
A common method to achieve visible light absorption is to narrow the bandgap by extending the valence band edge through the substitutional doping of TiO2 with nitrogen (N TiO2).
One attractive method to improve the light absorption and charge carrier collection involves high aspect ratio cylindrical absorbers, such as 1-D nanowires [130].
