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  • 1
    ISSN: 1572-8781
    Keywords: BioMEMS ; nanotechnology ; microfabrication ; membranes ; silicon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract The ability to create well-defined and controlled interfaces has been an area of great interest over the last few years, particularly in the biomedical arena. This paper will describe the development of technology for the fabrication of nanopore membranes, and their operation in biological environments. With monodisperse pores sizes as small as 10 nanometers, these membranes offer advantages in their reproducibility, and their ability to be integrated with controlled biochemical surface modification protocols. A comprehensive review of results in the areas of nanopore and biocapsule microfabrication technologies, biocompatibility of nanomembrane materials, biologically appropriate post-processing protocols (bonding, sterilization), surface modification protocols, and appropriate mass transport models will be presented. The results point to the potential of using such technologies for therapeutic applications including immunoisolation biocapsules, drug delivery devices, and targeted biorecognition platforms.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 60 (1998), S. 137-146 
    ISSN: 0006-3592
    Keywords: fluorescence confocal microscopy ; microfabrication ; aminosilane ; mercaptosilane ; antibody immobilization ; heterobifunctional crosslinker ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Fluorescence confocal microscopy was used to characterize micron-sized microfabricated silicon particles and planar oxide surfaces after silanization and immobilization of IgG antibody. Surfaces treated with amino- and mercaptosilanes were tested for the presence of amine and sulfhydryl groups by labeling with specific fluorescein probes. In addition, human antibody (IgG) was immobilized to the thiol-coated microparticles using the heterobifunctional crosslinker succinimidyl 4-(N-maleimidolmethyl)-cyclohexane-1-carboxylate. Estimates of the surface density of IgG were consistent with 8.3% of a monolayer of covalently-bound antibody. Confocal images confirmed uniform layers of both silanes and antibodies on the microparticles. The sensitivity limit for the confocal measurements was determined to be as low as 1.5 × 10-5 fluors per nm2. © 1998 John Wiley & Sons, Inc. Biotechnol Bioeng 60: 137-146, 1998.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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