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Biomedical Engineering and Bioengineering Commons™
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Full-Text Articles in Biomedical Engineering and Bioengineering
Functionalized Nanoparticles For Biological Imaging And Detection Applications, Bing C Mei
Functionalized Nanoparticles For Biological Imaging And Detection Applications, Bing C Mei
Doctoral Dissertations 1896 - February 2014
Semiconductor quantum dots (QDs) and gold nanoparticles (AuNPs) have gained tremendous attention in the last decade as a result of their size-dependent spectroscopic properties. These nanoparticles have been a subject of intense study to bridge the gap between macroscopic and atomic behavior, as well as to generate new materials for novel applications in therapeutics, biological sensing, light emitting devices, microelectronics, lasers, and solar cells. One of the most promising areas for the use of these nanoparticles is in biotechnology, where their size-dependent optical properties are harnessed for imaging and sensing applications. However, these nanoparticles, as synthesized, are often not stable …
Selective Deposition Of Metal Nanoparticles Inside Or Outside Multiwalled Carbon Nanotubes, Jean-Philippe Tessonnier, Ovidiu Ersen, Gisela Weinberg, Cuong Pham-Huu, Dang Sheng Su, Robert Schlogl
Selective Deposition Of Metal Nanoparticles Inside Or Outside Multiwalled Carbon Nanotubes, Jean-Philippe Tessonnier, Ovidiu Ersen, Gisela Weinberg, Cuong Pham-Huu, Dang Sheng Su, Robert Schlogl
Jean-Philippe Tessonnier
A general method is described for the deposition of metal nanoparticles selectively either inside or outside of carbon nanotubes (CNTs). The method is based on the difference in the interface energies of organic and aqueous solutions with the CNT surface. Because of their lipophilic character, the organic solvent better wets the surface of the nanotubes compared to water and penetrates into the inner volume. The precise control of the volume of each phase allows filling the CNT with the organic phase and covering its outer surface with the aqueous one. Hence, metal nanoparticles can be put with high selectivity either …