SPEAKER PROFILE |
 Dr. Raphael Pugin CSEM SWITZERLAND |
Fabrication of submicro-/nano- structured surfaces with enhanced performances or unique physical, chemical or biological properties
Abstract
The presentation will report on the development of reliable processes for the fabrication of submicro-/nano- structured surfaces, films and components with enhanced performances or unique physical, chemical or biological properties.
First self-assembly (polymer and nanosphere lithography) has been combined with standard microfabrication/tooling processes to produce replication tools compatible with UV nanoimprint, hot embossing and injection molding. A major advantage of this approach is the cost effective fabrication of nanostructures over relatively large areas (hundreds of cm2) and on curved or 3D shape surfaces. The masters have then been used to produce by replication nanostructured films or 3D plastic parts. Applications in different domains such as photovoltaics, aeronautics and biotechnology will be demonstrated.
In a second part we will describe how sol-gel chemistry and associated nanotexturation processes allow the elaboration of inorganic or hybrid nanoporous materials and thin films with an extended range of porosity and composition. The resulting nanoparticulate coatings can then be used as host matrices to accommodate within pores functional molecules such as dyes or biomolecules. In that case the properties of the resulting material or film are mostly related to the very high specific surface and controlled porosity, and are dedicated to application in the field of, sensing or for coating with unique optical properties.
First self-assembly (polymer and nanosphere lithography) has been combined with standard microfabrication/tooling processes to produce replication tools compatible with UV nanoimprint, hot embossing and injection molding. A major advantage of this approach is the cost effective fabrication of nanostructures over relatively large areas (hundreds of cm2) and on curved or 3D shape surfaces. The masters have then been used to produce by replication nanostructured films or 3D plastic parts. Applications in different domains such as photovoltaics, aeronautics and biotechnology will be demonstrated.
In a second part we will describe how sol-gel chemistry and associated nanotexturation processes allow the elaboration of inorganic or hybrid nanoporous materials and thin films with an extended range of porosity and composition. The resulting nanoparticulate coatings can then be used as host matrices to accommodate within pores functional molecules such as dyes or biomolecules. In that case the properties of the resulting material or film are mostly related to the very high specific surface and controlled porosity, and are dedicated to application in the field of, sensing or for coating with unique optical properties.
Bio
Raphaël Pugin studied chemistry in Strasbourg (MS 1996, Dr. P. Braunstein), before to move to the University of Essen (Germany, Prof. G. Schmid) for his PhD (2000). For these assignments, research interests were focused around the synthesis and organization of new semiconducting quantum dots. He moved then to CSEM (Swiss Center for Electronics and Microtechnology) in 2001, first as project manager of various industrial and research projects and from 2003 as Section Head of the Nanoscale Technology group in the Micro- and Nano-systems division. Current activities include nano-structuring of surfaces and nanofabrication with both bottom-up (molecular self-assembly) and top-down methods (photolithography, imprinting, MEMS based, fluidics), replication techniques (hot embossing, injection molding), as well as the development of nanostructured materials for the life sciences