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Assembly of Silica Nanoparticles for Two-Dimensional Nanomaterials

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Abstract:

To realize the great potential of nanoparticles as new materials for biomedical applications, the nanoparticles will have to be assembled in such a way that the newly created assembly will have unique properties that conventional materials do not possess. This will enable nanomaterials to be used for many novel applications. We have attempted to assemble silica nanoparticles to create a two-dimensional nanomaterial, which might be useful for biosensor and biochip production. The silica nanoparticles are synthesized and assembled in a monolayer fashion through the use of halogenated silanes. Photolithography techniques are used to pattern the glass surface prior to nanoparticle attachment. The concentration of the silica nanoparticles in the solution controls the surface coverage of nanoparticles on the glass surface. Different patterned silica arrays can be made with controlled surface coverage. The nanoparticle-covered surface is successfully tested for surface-enhanced enzymatic reactivity for the detection of a neurotransmitter, glutamate. This report demonstrates the feasibility of assembling nanoparticles for biosensor development.

Keywords: GLUTAMATE; NANOMATERIALS; SILICA NANOPARTICLES; TWO-DIMENSIONAL

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2004.014

Publication date: July 1, 2004

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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