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Memorias de investigación
Artículos en revistas:
Laser-induced forward transfer of high-viscosity silver pastes
Año:2016
Áreas de investigación
  • Ingenierías
Datos
Descripción
In this work, a study of the morphology of individual dots of silver paste deposited by laser-induced forward transfer (LIFT) is performed using a ns-pulsed laser at 532 nm. The LIFT process is characterized by scanning confocal microscopy on the deposited material and in-situ time-resolved imaging during the transfer in order to illuminate the flow dynamics in relation to the pulse energy and paste thickness. The influence of process parameters on the structure of transferred dots is explained both phenomenologically and analytically. Depending on the experimental conditions, different transfer regimes were observed. These regimes have similarities to those reported for LIFT of Newtonian fluids and nanopastes, but the multiphase and non-Newtonian rheology and thicker films used lead to noticeable differences, such as the formation of a continuous and stable pillar connecting donor and acceptor substrates when the paste film is thick enough and the energy is optimum. This process regime allows transfer of dots with high aspect ratios, which is desirable for the printing of contacts on solar cells.
Internacional
Si
JCR del ISI
Si
Título de la revista
Applied surface surface science
ISSN
0169-4332
Factor de impacto JCR
3,15
Información de impacto
Volumen
366
DOI
http://dx.doi.org/10.1016/j.apsusc.2016.01.029
Número de revista
Desde la página
389
Hasta la página
396
Mes
ENERO
Ranking
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Participantes
  • Autor: David Muñoz Martin (UPM)
  • Autor: Frederik Brasz (Princeton University)
  • Autor: Yu Chen (UPM)
  • Autor: Miguel Morales Furio (UPM)
  • Autor: Carlos Luis Molpeceres Alvarez (UPM)
  • Autor: Craig Arnold (Princeton University)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Física Aplicada e Ingeniería de Materiales
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