Numerical and Experimental Study of Bioink Transfer Process in Laser Induced Forward Transfer (Lift) 3d Bioprinting

2021 ◽  
Author(s):  
Jie Qu ◽  
Chaoran Dou ◽  
Jianzhi Li ◽  
Zhonghao Rao ◽  
Ben Xu
Keyword(s):  
Experimental Study ◽  
Transfer Process ◽  
3D Bioprinting ◽  
Forward Transfer

Numerical and Experimental Study of Bioink Transfer Process in Laser Induced Forward Transfer (LIFT) 3D Bioprinting

2020 ◽  
Author(s):  
Jie Qu ◽  
Chaoran Dou ◽  
Jianzhi Li ◽  
Zhonghao Rao ◽  
Ben Xu
Keyword(s):  
Experimental Study ◽  
Laser Pulse ◽  
Transfer Process ◽  
Laser Fluence ◽  
Vapor Bubble ◽  
Ambient Pressure ◽  
Maximum Magnitude ◽  
3D Bioprinting ◽  
Jet Formation ◽  
Forward Transfer

Abstract As a promising 3D bioprinting process, laser induced forward transfer (LIFT) has attracted attention in the last decade due to its advantages of non-contact, nozzle-free, high dropping rate and high resolution. However, the mechanism of bubble/jet formation under laser inducement has not been well comprehended yet. To better understand the multiphase process, the bubble formation and jet process under single laser pulse was explored in this study, using both the Computational Fluid Dynamics (CFD) model and experimental study. The results showed that under a laser pulse with the Gaussian distribution, a vapor bubble was formed around 0.1μs, then the bubble was expanded over time. During the bubble expansion process, the maximum magnitude of velocity could reach as high as 22m/s. The pressure near the laser interaction area was around 4.72 × 107 Pa, which is 470 times of the ambient pressure. After increasing the pulse energy and focal spot area, the liquid bubble layer moved downward to complete the bioink transfer process after the collapse of glycerol vapor bubble, which showed similar flow characteristics as the experimental results under the same laser fluence (1.4J/cm2). When the laser fluence was decreased to 0.8 J/cm2, a regular jet flow could be observed. The proposed multiphase numerical model can be used to understand the mechanism of bubble/jet formation under laser inducement and provide some insights into the bioink transfer during LIFT process, in order to eventually optimize the LIFT 3D-printing process with greater cell viability.

Experimental investigation of laser induced forward transfer process of metal thin films

2002 ◽  
Vol 186 (1-4) ◽  
pp. 221-226 ◽  
Author(s):  
T. Sano ◽  
H. Yamada ◽  
T. Nakayama ◽  
I. Miyamoto
Keyword(s):  
Thin Films ◽  
Experimental Investigation ◽  
Transfer Process ◽  
Metal Thin Films ◽  
Forward Transfer

Excited state intramolecular proton transfer process in benzazole fluorophores tailored by polymeric matrix: A combined theoretical and experimental study

2019 ◽  
Vol 295 ◽  
pp. 111710 ◽  
Author(s):  
Jônatas Faleiro Berbigier ◽  
Luís Gustavo Teixeira Alves Duarte ◽  
Janaína Mendez Perez ◽  
Rodrigo Araujo Mendes ◽  
Eduardo Zapp ◽  
...  
Keyword(s):  
Experimental Study ◽  
Excited State ◽  
Proton Transfer ◽  
Transfer Process ◽  
Intramolecular Proton Transfer ◽  
Polymeric Matrix ◽  
Proton Transfer Process

An Experimental Study of the Dynamic Mass Transfer Process During Carbonated Water Injection

2019 ◽  
Author(s):  
Jiandong Zou ◽  
Xinwei Liao ◽  
Xiaoliang Zhao ◽  
Zhiming Chen ◽  
Lingyu Mu ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Experimental Study ◽  
Transfer Process ◽  
Water Injection ◽  
Mass Transfer Process ◽  
Dynamic Mass ◽  
Carbonated Water Injection ◽  
Carbonated Water

Application and observation of laser-induced forward transfer process

2002 ◽  
Author(s):  
Yoshiki Nakata ◽  
Tatsuo Okada ◽  
Mitsuo Maeda
Keyword(s):  
Transfer Process ◽  
Forward Transfer

Optimization study of the femtosecond laser-induced forward-transfer process with thin aluminum films

2007 ◽  
Vol 46 (21) ◽  
pp. 4650 ◽  
Author(s):  
Sudipta Bera ◽  
A. J. Sabbah ◽  
J. M. Yarbrough ◽  
C. G. Allen ◽  
Beau Winters ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Transfer Process ◽  
Aluminum Films ◽  
Optimization Study ◽  
Thin Aluminum ◽  
Forward Transfer

Microfabrication of biomaterials by the sub-ps laser-induced forward transfer process

2003 ◽  
Vol 208-209 ◽  
pp. 245-249 ◽  
Author(s):  
A. Karaiskou ◽  
I. Zergioti ◽  
C. Fotakis ◽  
M. Kapsetaki ◽  
D. Kafetzopoulos
Keyword(s):  
Transfer Process ◽  
Forward Transfer
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