Phase discrimination inside a spray: LDV measurements using fluorescent seeding particles (FLDV)

High-Efficiency Förster Resonance Energy Transfer in Solid-State Dye Sensitized Solar Cells

“…For an average 24 nm TiO 2 nanotube pore size, this implies that R c should be greater than 7.2 nm. Assuming a SQ-1 dye surface concentration of 0.6 dye/nm 2 , values from 0.2 to 1 dye/nm 2 have been reported; with the calculated Förster radius of 6.1 nm, a DCM fluorescence lifetime of 1.6 ns, and approximating the k qj [ Q j ] value as 10 9 M −1 s −1 , R c is calculated to be 5.11 nm. Referring to Figure c of ref , such properties should result in an ETE value of approximately 70%, a value in excellent agreement with our 67.5% calculated ETE value.…”

Development of the FPDA technique to study the atomization of emulsions

“…The objective of the FPDA is to obtain the velocities and the diameters of the two phases at the same time and to discriminate the contribution of each liquid to the atomization process. Their experimental setup and their article are in line with the work done by Rottenkolber et al [7]. Two nebulizers are used to produce fluorescent and nonfluorescent tracer particles to have a two-phase flow and to validate the experiments.…”

“…The classic version of the PDA does not enable to discriminate the phases so that the characteristics of only one phase can be obtained simultaneously. In this frame Rottenkolber et al [7] presented a fluorescent LDV-system (FLDV) that provides the velocity of the gas phase in the presence of the dispersed phase by adding fluorescent tracer particles to the gas flow. This approach was based on a spectral discrimination into Mie-scattered and fluorescent light of the recorded burst signals.…”

“…The objective of the present work is to perform the phase discrimination as proposed by Rottenkolber et al [7] and Hehle et al [8] and to adapt it to a PDA system. In this case a onedimensional velocity will be used.…”