High repetition rate laser-induced prinitng of biopolymers: time-resolvestudy of multiple jet dynamics - laboratoire Lasers, Plasmas et Procédés Photoniques Accéder directement au contenu
Poster De Conférence Année : 2022

High repetition rate laser-induced prinitng of biopolymers: time-resolvestudy of multiple jet dynamics

Résumé

Laser-induced forward transfer (LIFT) is a versatile, non-contact, high-resolution laser direct writing technique that offers promising solutions in various fields of application. Our work is focused on the use of this technique to create organized 2D/3D arrangements of biomaterials and living cells to create in vitro biomodels for applications in tissue engineering or regenerative medicine. LIFT is a two-part printing method using laser-matter interaction to transfer tiny amounts of material from a thin donor film to a receptor substrate, both separated by a few hundreds of micrometres. A short laser pulse induces the formation of a jet propagating perpendicularly to the donor substrate. The bio-ink previously spread as a thin film on this donor substrate is thus collected as a micrometer-sized droplet on the receiver. In order to precisely control the amount and the location of the deposited material, it is necessary to investigate carefully the jetting dynamics as a function of various parameters including the laser fluence and the rheological properties of the bioink. In this study, we used time-resolved fast imaging to investigate the hydrodynamics of the transfer of successive jets at high pulse repetition rate. The set up being currently use is composed of a high-frequency laser (12ps, 60KHz) coupled with a fast-writing scanner that allows us to print large quantities of materials in extremely short times. Successive pulses are focused on a bioink-coated donor substrate and the transfer material is imaged with a shadowgraphic technique using a delayed nanosecond flash. With this technique we can record precise moment of the dynamic and accurately decompose the ejection mechanism. We present here our investigations on the jet dynamics as a function of the rheological properties of the bioink, the irradiation fluence, the distance and time between each individual jet… Understanding and controlling these dynamics will allow us to improve the quality and reproducibility of the prints. It will also help us to estimate the ideal donor-receiver distance in order to minimize the mechanical impact of the deposition process on the cells contained in the bio-ink.
Fichier principal
Vignette du fichier
poster EMRS 2022.pdf (1.39 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
licence : Copyright (Tous droits réservés)

Dates et versions

hal-03842335 , version 1 (18-01-2023)

Identifiants

  • HAL Id : hal-03842335 , version 1

Citer

Lucas Duvert, Adrien Casanova, Jérôme Robin-Ducellier, Frédérique Magdinier, Anne Patricia Alloncle. High repetition rate laser-induced prinitng of biopolymers: time-resolvestudy of multiple jet dynamics. E-MRS spring Meeting, Symposium Q, May 2022, virtual conference, France. ⟨hal-03842335⟩
31 Consultations
7 Téléchargements

Partager

Gmail Facebook X LinkedIn More