2005
DOI: 10.1590/s0100-40422005000200028
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Construção e avaliação de célula de fluxo para estudo da tensão interfacial dinâmica da interface fluxo líquido - sólido por despolarização da fluorescência

Abstract: Recebido em 8/1/04; aceito em 3/9/04; publicado na web em 17/2/05 DEVELOPMENT OF A FLOW CELL TO STUDY DYNAMIC INTERFACIAL TENSION OF SOLID-LIQUID FLOW BY FLUORESCENCE DEPOLARIZATION. A simple low-cost flow cell was developed, built and optimized in order to observe dynamic interfacial tension of continuous flow systems. Distinct materials can be used in one of the cell walls in order to observe the intermolecular forces between the flowing liquid and the chemical constitution of the walls. The fluorescence dep… Show more

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“…Flow Cell. An in-house developed cell (Figure A) was used in order to emphasize the boundary layer where the interaction between the wall and the liquid flow is stronger.
3 (A) Scheme of the flow cell for PLF-FI.
…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Flow Cell. An in-house developed cell (Figure A) was used in order to emphasize the boundary layer where the interaction between the wall and the liquid flow is stronger.
3 (A) Scheme of the flow cell for PLF-FI.
…”
Section: Methodsmentioning
confidence: 99%
“…The experimental setup for PLF-FI was described before. , Briefly, a Coherent Inova60 argon laser (Figure B) at multimode, multiline, and 100 mW is reflected by two mirrors (M) through a biconvex borosilicate lens (L1) of 400-mm focal length that focus the laser into the sample (FI) on a 0.02-mm 2 diameter spot. To monitor the laser intensity fluctuations in real time, 10% of the laser beam was diverted by a beam splitter (BS) onto a BPW-21 RS-Electronics photodiode (PD1) with 7.5-mm 2 active area, operating as a current-to-voltage converter with seven optional sensibility ranges.…”
Section: Methodsmentioning
confidence: 99%
“…The experimental setup for PLF-FI has been described before. , Briefly, a Coherent Inova60 argon laser (Figure , bottom) in multimode, multiline, and 100 mW is reflected by two mirrors (M1 and M2) through a biconvex borosilicate lens (L1) of 400 mm focal length that focuses the laser to a 0.02 mm 2 diameter spot on the sample (FI). To monitor the laser intensity fluctuations in real time, 10% of the laser beam was diverted by a beam splitter (BS) onto a BPW-21 RS-Electronics photodiode (PD1) with a 7.5 mm 2 active area, operating as a current to voltage converter with seven optional sensitivity ranges.…”
Section: Methodsmentioning
confidence: 99%