scholarly journals Inkjet Printing of Microcomponents: Theory, Design, Characteristics and Applications

Author(s):  
Chin-Tai Chen

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000055-000066 ◽  
Author(s):  
C. DOSSOU-YOVO ◽  
M. MOUGENOT ◽  
E. BEAUDROUET ◽  
M. BESSAUDOU ◽  
N. BERNARDIN ◽  
...  

This paper describes the methodology of thick film and Multilayer Ceramic Capacitor (MLCC) components manufacturing by inkjet printing. The printing unit is a CERADROP 3D multimaterial inkjet printer. Aqueous conductive and dielectric inks were formulated according to the printheads specifications in terms of viscosity, surface tension, particles size and sedimentation. Jetting behavior was controlled and optimized to reach the best droplets characteristics with regard to the design. Numerical processing simulation tool helps to control the printing job and to identify beneficial potential issues during the processing. Therefore printing parameters (droplet spreading, layer thickness, filling strategy, layer drying, etc.) were optimized according to material and component design characteristics. By this way, high definition and thin conductive tracks were achieved on alumina substrate with good electrical properties. Moreover, two printheads were used to build successively 3D multimaterial MLCC components with thin dielectric and conductive layers (i) with a good margins precision compared to traditional processes and (ii) with very high complex configurations thanks to the flexibility of the inkjet printing process. For both applications, large area components were accessible in a single batch.



2012 ◽  
Vol 9 (4) ◽  
pp. 187-198
Author(s):  
C. Dossou-Yovo ◽  
M. Mougenot ◽  
E. Beaudrouet ◽  
M. Bessaudou ◽  
N. Bernardin ◽  
...  

This paper describes the methodology of thick film and multilayer ceramic capacitor (MLCC) component manufacturing by inkjet printing. The printing unit is a CeraDrop 3D multimaterial inkjet printer. Aqueous conductive and dielectric inks were formulated according to the printhead specifications in terms of viscosity, surface tension, particle size, and sedimentation. Jetting behavior was controlled and optimized to reach the best droplet characteristics with regard to the design. The numerical processing simulation tool helps to control the printing job and to identify potential beneficial issues during the processing. Therefore, printing parameters (droplet spreading, layer thickness, filling strategy, layer drying, etc.) were optimized according to material and component design characteristics. In this way, high definition and thin conductive tracks were achieved on an alumina substrate with good electrical properties. Moreover, two printheads were used to successively build 3D multimaterial MLCC components with thin dielectric and conductive layers (i) with good precision of margins compared with traditional processes, and (ii) with very high complex configurations thanks to the flexibility of the inkjet printing process. For both applications, large area components were accessible in a single batch.





2020 ◽  
Vol 228 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Tanja Burgard ◽  
Michael Bošnjak ◽  
Nadine Wedderhoff

Abstract. A meta-analysis was performed to determine whether response rates to online psychology surveys have decreased over time and the effect of specific design characteristics (contact mode, burden of participation, and incentives) on response rates. The meta-analysis is restricted to samples of adults with depression or general anxiety disorder. Time and study design effects are tested using mixed-effects meta-regressions as implemented in the metafor package in R. The mean response rate of the 20 studies fulfilling our meta-analytic inclusion criteria is approximately 43%. Response rates are lower in more recently conducted surveys and in surveys employing longer questionnaires. Furthermore, we found that personal invitations, for example, via telephone or face-to-face contacts, yielded higher response rates compared to e-mail invitations. As predicted by sensitivity reinforcement theory, no effect of incentives on survey participation in this specific group (scoring high on neuroticism) could be observed.



Author(s):  
Rollin J. Fairbanks ◽  
Theresa K. Guarrera ◽  
Keith S. Karn ◽  
Stanley H. Caplan ◽  
Manish N. Shah ◽  
...  


Author(s):  
Alfonso Arturo Castrejon-Pita ◽  
Eleanor S Betton ◽  
Nick Campbell ◽  
Nick Jackson ◽  
Jonathan Morgan ◽  
...  
Keyword(s):  


2019 ◽  
Vol 2019 (1) ◽  
pp. 56-59
Author(s):  
Erik Beckert ◽  
Falk Kemper ◽  
Sabrina-Jasmin Wolleb ◽  
Maximilian Reif ◽  
Soenke Steenhusen
Keyword(s):  




2018 ◽  
Vol 2018 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Min Zhao ◽  
Susana Diaz Amaya ◽  
Seon-ah Jin ◽  
Li-Kai Lin ◽  
Amanda J. Deering ◽  
...  


2017 ◽  
Vol 61 (5) ◽  
pp. 505051-505057 ◽  
Author(s):  
Zundong Liu ◽  
Kuanjun Fang ◽  
Hongguo Gao ◽  
Xiuming Liu ◽  
Jianfei Zhang ◽  
...  


Sign in / Sign up

Export Citation Format

Share Document