University of Nebraska-Lincoln
514A Hamilton Hall
Lincoln, NE 68588-0304
The main focus of research efforts in the Cheung group is to offer conceptual and technological contributions to the design of bio-inorganic and inorganic materials for applications in nanotechnology and chemical analysis. Our research involves the design and synthesis of inorganic/bio-organic nanostructured components that can self-assemble into 3-dimensional hierarchical structures with novel physical and chemical properties. Our strategy is to abstract the efficient designs from nature to guide the synthesis of self-assembled components of materials systems.
Our ongoing research goals are to advance the understanding of the self-assembly process in the bio-inorganic systems by determining the physical and chemical mechanisms by which important inhibitors or promoters control the nucleation, growth, aggregation, and phase transformations of materials assembled from asymmetric and/or symmetric components. The types of systems currently studying are nanospheres, nanowires, and icosahedral virus particles.
Since device physics and properties of materials are known to change when the dimension is reduced down to the nanometer scale, we are also applying the knowledge learnt from the self-assembly mechanism to engineer and characterize functional nanostructures for prototyping various kinds of analytical devices. The aims of these projects are to bridge the "gap" in the assembly of materials between the nanoscale (1-10nm), mesoscale (10nm - 1mm) and the micron scale systems for the fabrication of functional devices and systems.
(1) "Bifunctional nanoceria assisted catalytic cyanosilylation of aldehydes" Wang, G., Wang, L., Fei, X., Sabirianov, R.F., Mei, W.N. & *Cheung, C.L. submitted (2012).
(2) "Controlling E. coli adhesion on high-k bioceramics films using poly(amino acids) multilayers" Lawrence, N.J., Wells-Kingsbury, J.M., Ihrig, M.M., Fangman, T.E., Namavar, F. & *Cheung, C.L. Langmuir in press (2012). DOI:10.1021/la2033725
(3) "Building crystalline Sb2S3 nanowire dandelions with multiple crystal splitting motif" Wang, G. & *Cheung, C.L. Mater. Lett. 67, 222-225 (2012). DOI:10.1016/j.matlet.2011.09.07