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Hierarchically structured membranes manufactured by inkjet technology

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Membranes with micro pores smaller than 30 μm are required in many micro systems dedicated to biological and chemical applications. However, the challenges of manufacturing these membranes rise with decreasing pore sizes. Similar requirements have to be met regarding the dependence of flow resistance and membrane thickness. Currently, the mechanical stability of these membranes has to be improved to establish appropriate industrial micro systems fabrication.

The paper outlines a new route to manufacture those micro membranes based on inkjet as a digital fabrication technology.

Single droplets of a qualified liquid are inkjet printed onto a temporary supporting substrate. These droplets are used as molds for the pores of a thin polymer membrane. The macroscopic membrane structure is made by casting a curable polymer solution onto the droplet pattern. The digital fabrication character of the patterning process enables the manufacturing of hierarchically structured membranes as a variable pattern of pores and support structures in one single patterning step. This technology allows free three-dimensional membrane design.

Document Type: Research Article

Publication date: 2007-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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