Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM

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Highly integrated polymer-based technology platform for in-vitro diagnostics

2008 , Otto, Thomas , Nestler, Jörg , Morschhauser, Andreas , Schüller, Martin , Geßner, T. , Krissler, Jan , Ebling, Frank , Wegener, Michael , Grzesiak, Andrzej , Burgard, Matthias , Brandenburg, Albrecht , Sulz, Gerd , Nebling, Eric , Hintsche, Rainer , Wirth, Ingo , Godlinski, Dirk , Tovar, Günter E.M. , Weber, Achim , Ehrentreich-Förster, Eva , Gajovic-Eichelmann, Nenad , Bier, Frank F.

Systems for in-vitro diagnostics are of great interest especially in the point-of-care diagnostic market. Specialized integrated approaches have already been developed and successfully marketed, but were mainly focused on basic blood parameter determination. This paper describes a new, more flexible approach for an in-vitro diagnostic cartridge, which is able to hold different types of sensors (optical and electrochemical), integrated reagents as well as integrated microfluidic actuators. The platform will be capable of running both protein and nucleic acid analysis.

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Novel low-loss and thermostable polymers for application in integrated optics

1997 , Keil, N. , Yao, H. , Zawadzki, C. , Bauer, M. , Uhlig, C.

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XPS studies of thin polycyanurate films on silicon wafers and aluminium substrates

1995 , Dieckhoff, S. , Schlett, V. , Possart, W. , Hennemann, O.-D.

The fundamental understanding of the chemical and physical phenomena of the adhesion at substrate/polymer interfaces is of great importance in order to be able to solve and control adhesion problems. We used a prepolymer of the diandicyante of bisphenol A (DCBA) as a model of a network polymer. The adsorption of thin DCBA-prepolymer films on silicon and aluminium substrates is studied by x-ray photoelectron spectroscopy (XPS), infrared spectrscopy (IR) and ellipsometry.

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Micro machining technologies for non silicon materials

2008 , Baum, M. , Rota, A. , Salk, N. , Otto, T. , Gessner, T.

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Epoxy-siloxane modified polycyanurate networks. Innovative structural and functional materials

1997 , Bauer, J. , Meyer, G. , Brandl, O. , Uhlig, C. , Bauer, M.

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Adsorption and growth of polycyanurate films on silicon wafers and aluminium substrates

1994 , Dieckhoff, S. , Schlett, V. , Possart, W. , Hennemann, O.-D.

We have investigated thin films of a DCBA prepolymer on Si and Al substrates. High-resolution Cls, Ols and Nls x-ray photoelectron spectra reveal some thickness-dependent features, which lead to an adsorption model for the DCBA prepolymer molecules. The adsorption of the first layer is governed by the interaction of the triazine rings with the substrate interface.

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Polycyanurates. Innovative structural and functional materials

1997 , Bauer, M. , Bauer, J. , Uhlig, C.

A review with 12 refs.; polycyanurates are a young but well-developed group of high-temp. thermosetting polymers. Their rapid development during the last decade was primarily stimulated by the emerging requirements in aerospace and microelectronics applications, which cannot be met by common thermosets, e.g. epoxies. Some of the main reasons for the growing acceptance of polycyanurates as innovative structural and functional materials are: approved epoxy technologies can be used for handling and curing of the precursors (cyanate ester resins), no admixing of extra hardener is necessary; because the resin is self-hardening, the processing characteristics can be adjusted with a wide range of common catalysts, and, depending on the type of the backbone structure (cyanate ester monomer), a unique range of properties can be achieved including glass temps. up to 400 .degree.C, high toughness compared to other high-Tg thermosets, low dielec. losses, low inherent flammability, low optical damp ing, high chem. resistance and low corrosion potential. Finally, the range and combination of properties can easily be widened by copolymn. of cyanate esters with a variety of other reactive compds.

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Polycyanurates. Innovative Thermosets

1997 , Bauer, M. , Bauer, J. , Uhlig, C.

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Adsorption behaviour of a prepolymer on aluminium and silicon.

1994 , Hartwig, A. , Zha, Z. , Possart, W. , Hennemann, O.-D.

The preparation of thin layers of a prepolymer containing cyanate and triazine groups by dip-coating is described. The substrates are silicon and aluminium covered with their native oxide layer. The influence of immersion time, concentration, temperature and dip-speed on the thickness of the layer formed on the substrate was examined.

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