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Precision Deposition of Functional Layers for Microcantilever Sensor Generation

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A new platform of highly sensitive chemical and biological sensors using microcantilever arrays as transducers has emerged. In the critical step of functionalization, a chemically selective layer is deposited onto the cantilever surface making the sensor specific to binding or adsorption of a target analyte. Very precise deposition in volume and spatial accuracy has been achieved through the development of an inkjet functionalization system. In this paper, the methods for achieving maximum resolution are discussed. A high precision motion control system is presented which includes an X-Y stage powered by linear electric motors to achieve sub-micron positioning. A novel laser-optical registration method is developed to achieve the desired accuracy between the nozzle tip and the substrate. The inkjet functionalization system has enabled research to understand the effects of polymeric coatings on cantilever stiffness and quality factor. The system has been used to functionalize microcantilevers with magnetic micro beads using biotin-streptavidin binding.
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Document Type: Research Article

Publication date: 01 January 2007

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  • 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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