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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

» presentations   » 2011.03.14




Self assembly of 1D-nanoparticles at interfaces using external fields (HL 20.2)

A. Majumder, O. Jost, J. Opitz, G. Cuniberti, E. Beyer

DPG Frühjahrstagung der Sektion Kondensierte Materie (SKM) und der Sektion AMOP (SAMOP)
DPG Spring Meeting of the Condensed Matter Section (SKM) and the Atomic, Molecular, Plasma Physics and Quantum Optics Section (SAMOP)


2011.03.14; (POT 06) Dresden, Germany

Self-assembly of nanoparticles has promising technological applications since it provides efficient building blocks for physical, chemical, and biological systems. Localization of nanoparticles at liquid-liquid interfaces by manipulating the particle surface energy is an upcoming area with great potential for applied and fundamental research. Apart from regular technological applications, such tailor made assembly opens a window to fabricate self assembled interfacial structured hybrid materials with unique properties. Carbon nanotubes (CNTs) represent an anisotropic and perfectly one-dimensional class of nanoparticles with extraordinary properties. CNTs were functionalized by various surfactants to prevent its agglomeration due to van-der-Waals forces. This dispersion was added to an immiscible solvent and CNTs were self assembled with the aid of electric field via dielectrophoresis between pre-fabricated inter-digitated electrodes on silicon substrates. A potential drop across the interface may provide sufficiently deep potential wells for self assembly at the interface.



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