Michael CHAMBON has worked with me during 18 months as engineer in the SPCTS laboratory in Limoges (FRANCE) from November 2009 to May 2011. His job in the laboratory was associated to a European project CERMJET on the development by ink-jet printing of 3D magnetic components. He was in charge of the development of an attrition milling equipment to formulate inks for 3D ink-jet printing. He has coordinated the acquisition of this equipment (preliminary tests with different suppliers) and adjusted the different parameters to obtain the appropriate specifications of the inks (rheology, grain size, pH, ….). Moreover, he has carried out the different trials of ejection of the inks with a Ceradrop equipment and performed the deposition of ceramic layers by ink-jet printing. His contribution in this project was very significant and allows to obtain finally with success 3D fine-scale magnetic components. Michael CHAMBON is a hard-working person, displaying very strong motivation, initiative and rigorous analytical ability. He has also demonstrated a very good organization in his mission by managing perfectly the fixed schedule. Furthermore, he has a lot of determination, enabling him to persevere up to reach the set goals. I am therefore confident he possesses many skills which are necessary to integrate successfully a team in a company and I hope that he would get the opportunity to have this experience. Professor Martine LEJEUNE IrCer Laboratory martine.lejeune@unilim.fr

As assistant professor and researcher at the IRCER Laboratory (Limoges University, France), I worked with Michael Chambon on a research project concerning drop-on-demand inkjet printing of ceramic materials [1]. The framework of the project was 3D printing microtransformers by selectively ejecting all the different materials involved. This additive manufacturing process requires precise complex ink formulation and processing such as particle milling for size control, chemical additives for stability, viscosity and surface tension adjustment, and thus require handling various theoretical and experimental approaches in various disciplines such as physics and material chemistry. Michael perfectly succeeded to adapt and to develop new competences in order to perform these tasks. Moreover, as any innovative process, the implementation also required form Michael technical and mechanical skills in order to adjust operational parameters on the printer. In addition to these scientific and engineering skills, Michael also proved that he could be an essential part of a team, where human interaction was essential for the success of the project. He is very dynamic, efficient, and easy to work with, and his mind-set is especially well oriented for research and development. I therefore strongly support him for a job in this field. [1] Bienia, M., M. Lejeune, M. Chambon, V. Baco-Carles, C. Dossou-Yovo, R. Noguera and F. Rossignol (2016). "Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup." Chemical Engineering Science 149: 1-13.

Michael CHAMBON has worked with me during 18 months as engineer in the SPCTS laboratory in Limoges (FRANCE) from November 2009 to May 2011. His job in the laboratory was associated to a European project CERMJET on the development by ink-jet printing of 3D magnetic components. He was in charge of the development of an attrition milling equipment to formulate inks for 3D ink-jet printing. He has coordinated the acquisition of this equipment (preliminary tests with different suppliers) and adjusted the different parameters to obtain the appropriate specifications of the inks (rheology, grain size, pH, ….). Moreover, he has carried out the different trials of ejection of the inks with a Ceradrop equipment and performed the deposition of ceramic layers by ink-jet printing. His contribution in this project was very significant and allows to obtain finally with success 3D fine-scale magnetic components. Michael CHAMBON is a hard-working person, displaying very strong motivation, initiative and rigorous analytical ability. He has also demonstrated a very good organization in his mission by managing perfectly the fixed schedule. Furthermore, he has a lot of determination, enabling him to persevere up to reach the set goals. I am therefore confident he possesses many skills which are necessary to integrate successfully a team in a company and I hope that he would get the opportunity to have this experience. Professor Martine LEJEUNE IrCer Laboratory martine.lejeune@unilim.fr

As assistant professor and researcher at the IRCER Laboratory (Limoges University, France), I worked with Michael Chambon on a research project concerning drop-on-demand inkjet printing of ceramic materials [1]. The framework of the project was 3D printing microtransformers by selectively ejecting all the different materials involved. This additive manufacturing process requires precise complex ink formulation and processing such as particle milling for size control, chemical additives for stability, viscosity and surface tension adjustment, and thus require handling various theoretical and experimental approaches in various disciplines such as physics and material chemistry. Michael perfectly succeeded to adapt and to develop new competences in order to perform these tasks. Moreover, as any innovative process, the implementation also required form Michael technical and mechanical skills in order to adjust operational parameters on the printer. In addition to these scientific and engineering skills, Michael also proved that he could be an essential part of a team, where human interaction was essential for the success of the project. He is very dynamic, efficient, and easy to work with, and his mind-set is especially well oriented for research and development. I therefore strongly support him for a job in this field. [1] Bienia, M., M. Lejeune, M. Chambon, V. Baco-Carles, C. Dossou-Yovo, R. Noguera and F. Rossignol (2016). "Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup." Chemical Engineering Science 149: 1-13.

Michael CHAMBON has worked with me during 18 months as engineer in the SPCTS laboratory in Limoges (FRANCE) from November 2009 to May 2011. His job in the laboratory was associated to a European project CERMJET on the development by ink-jet printing of 3D magnetic components. He was in charge of the development of an attrition milling equipment to formulate inks for 3D ink-jet printing. He has coordinated the acquisition of this equipment (preliminary tests with different suppliers) and adjusted the different parameters to obtain the appropriate specifications of the inks (rheology, grain size, pH, ….). Moreover, he has carried out the different trials of ejection of the inks with a Ceradrop equipment and performed the deposition of ceramic layers by ink-jet printing. His contribution in this project was very significant and allows to obtain finally with success 3D fine-scale magnetic components. Michael CHAMBON is a hard-working person, displaying very strong motivation, initiative and rigorous analytical ability. He has also demonstrated a very good organization in his mission by managing perfectly the fixed schedule. Furthermore, he has a lot of determination, enabling him to persevere up to reach the set goals. I am therefore confident he possesses many skills which are necessary to integrate successfully a team in a company and I hope that he would get the opportunity to have this experience. Professor Martine LEJEUNE IrCer Laboratory martine.lejeune@unilim.fr

As assistant professor and researcher at the IRCER Laboratory (Limoges University, France), I worked with Michael Chambon on a research project concerning drop-on-demand inkjet printing of ceramic materials [1]. The framework of the project was 3D printing microtransformers by selectively ejecting all the different materials involved. This additive manufacturing process requires precise complex ink formulation and processing such as particle milling for size control, chemical additives for stability, viscosity and surface tension adjustment, and thus require handling various theoretical and experimental approaches in various disciplines such as physics and material chemistry. Michael perfectly succeeded to adapt and to develop new competences in order to perform these tasks. Moreover, as any innovative process, the implementation also required form Michael technical and mechanical skills in order to adjust operational parameters on the printer. In addition to these scientific and engineering skills, Michael also proved that he could be an essential part of a team, where human interaction was essential for the success of the project. He is very dynamic, efficient, and easy to work with, and his mind-set is especially well oriented for research and development. I therefore strongly support him for a job in this field. [1] Bienia, M., M. Lejeune, M. Chambon, V. Baco-Carles, C. Dossou-Yovo, R. Noguera and F. Rossignol (2016). "Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup." Chemical Engineering Science 149: 1-13.