Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes
Laser-induced forward transfer for high-viscosity—of Pa·s—pastes differ from standard LIFT processes in its dynamics. In most techniques, the transference after setting a great gap does not modify the shape acquired by the fluid, so it stretches until it breaks into droplets. In contrast, there is n...
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MDPI AG
2021-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/19/5567 |
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| author | Juan José Moreno-Labella David Munoz-Martin Guillermo Vallejo Carlos Molpeceres Miguel Morales |
| author_facet | Juan José Moreno-Labella David Munoz-Martin Guillermo Vallejo Carlos Molpeceres Miguel Morales |
| author_sort | Juan José Moreno-Labella |
| collection | DOAJ |
| description | Laser-induced forward transfer for high-viscosity—of Pa·s—pastes differ from standard LIFT processes in its dynamics. In most techniques, the transference after setting a great gap does not modify the shape acquired by the fluid, so it stretches until it breaks into droplets. In contrast, there is no transferred material when the gap is bigger than three times the paste thickness in LIFT for high-viscosity pastes, and only a spray is observed on the acceptor using this configuration. In this work, the dynamics of the paste have been studied using a finite-element model in COMSOL Multiphysics, and the behavior of the paste varying the gap between the donor and the acceptor substrates has also been modeled. The paste bursts for great gaps, but it is confined when the acceptor is placed close enough. The obtained simulations have been compared with a previous work, in which the paste structures were photographed. The analysis of the simulations in terms of speed allows for predicting the burst of the paste—spray regime—and the construction of a printability map regarding the gap between the substrates. |
| first_indexed | 2024-03-10T06:57:17Z |
| format | Article |
| id | doaj.art-c05e55271ed94b6f9808afa5d43e8c0c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:57:17Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c05e55271ed94b6f9808afa5d43e8c0c2023-11-22T16:23:47ZengMDPI AGMaterials1996-19442021-09-011419556710.3390/ma14195567Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity PastesJuan José Moreno-Labella0David Munoz-Martin1Guillermo Vallejo2Carlos Molpeceres3Miguel Morales4Centro Láser, Universidad Politécnica de Madrid, Alan Turing 1, 28038 Madrid, SpainCentro Láser, Universidad Politécnica de Madrid, Alan Turing 1, 28038 Madrid, SpainDepartamento de Física Aplicada e Ingeniería de Materiales, Escuela Técnica Superior de Ingenieros Industriales, José Gutiérrez Abascal 2, 28006 Madrid, SpainCentro Láser, Universidad Politécnica de Madrid, Alan Turing 1, 28038 Madrid, SpainCentro Láser, Universidad Politécnica de Madrid, Alan Turing 1, 28038 Madrid, SpainLaser-induced forward transfer for high-viscosity—of Pa·s—pastes differ from standard LIFT processes in its dynamics. In most techniques, the transference after setting a great gap does not modify the shape acquired by the fluid, so it stretches until it breaks into droplets. In contrast, there is no transferred material when the gap is bigger than three times the paste thickness in LIFT for high-viscosity pastes, and only a spray is observed on the acceptor using this configuration. In this work, the dynamics of the paste have been studied using a finite-element model in COMSOL Multiphysics, and the behavior of the paste varying the gap between the donor and the acceptor substrates has also been modeled. The paste bursts for great gaps, but it is confined when the acceptor is placed close enough. The obtained simulations have been compared with a previous work, in which the paste structures were photographed. The analysis of the simulations in terms of speed allows for predicting the burst of the paste—spray regime—and the construction of a printability map regarding the gap between the substrates.https://www.mdpi.com/1996-1944/14/19/5567laser-induced forward transfer (LIFT)laser process modelingfluid dynamicsphase-fieldlaser direct write |
| spellingShingle | Juan José Moreno-Labella David Munoz-Martin Guillermo Vallejo Carlos Molpeceres Miguel Morales Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes Materials laser-induced forward transfer (LIFT) laser process modeling fluid dynamics phase-field laser direct write |
| title | Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes |
| title_full | Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes |
| title_fullStr | Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes |
| title_full_unstemmed | Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes |
| title_short | Influence of the Gap between Substrates in the Laser-Induced Transference of High-Viscosity Pastes |
| title_sort | influence of the gap between substrates in the laser induced transference of high viscosity pastes |
| topic | laser-induced forward transfer (LIFT) laser process modeling fluid dynamics phase-field laser direct write |
| url | https://www.mdpi.com/1996-1944/14/19/5567 |
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