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Projects / Programmes source: ARIS

Self-assembly of colloids on patterned solid-liquid interfaces

Research activity

Code Science Field Subfield
1.02.00  Natural sciences and mathematics  Physics   

Code Science Field
P250  Natural sciences and mathematics  Condensed matter: structure, thermal and mechanical properties, crystallography, phase equilibria 
Keywords
solid-liquid interface, self-assembly, colloids, interactions in fluids, nanotechnology
Evaluation (rules)
source: COBISS
Researchers (3)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  19165  PhD Marjetka Conradi  Physics  Researcher  2003 - 2005  158 
2.  16408  PhD Klemen Kočevar  Physics  Head  2003 - 2005  63 
3.  09089  PhD Igor Muševič  Physics  Researcher  2003 - 2005  750 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,590 
Abstract
The principle of self-assembly is the basic mechanism of ordering and organisation of live matter in Nature. It is present at the molecular scale, where it determines the conformations of single macromolecules, and it drives the assembly of molecules into thermodynamically stable cellular structures and finally into the complex organisms. Self-assembly of nano-particles on surfaces will most probably play the role of the basic assembly mechanism in the forthcoming nanotechnology, since it is the only way that enables the building of complex structures within a reasonable time. The basic idea of the proposed research project is that the forces between micro- and nano-particles in a liquid media could be exploited to assemble well-defined, self-organised micro- and nano-structures on the confining surfaces. The main goal of the project is the determination of inter-particle interactions in different model systems that could lead to self-assembly of colloidal particles or single organic macromolecules on the confining surfaces. At the same time we would like to determine the nature of the thermodynamically stable structures that would form on the surfaces. To achieve these goals, we will apply methods of force spectroscopy with an atomic force microscope, ellipsometry, scanning tunnelling microscopy (STM) and quasi-elastic light scattering. The investigations will be performed on two different classes of interaction-mediating liquids: (i) interactions of colloids with the structured confining surface in the presence of complex, anisotropic fluids. (ii) Interaction of colloids in water with the patterned confining surfaces. An important part of the project will be directed in finding new methods of functionalisation of surfaces with a nanometer lateral resolution. This will be achieved by using chemical and physical methods, based on the AFM, STM and other SPM techniques.
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