By Dr. Roy Shenhar
|Researcher: Prof Uri Banin, Roy Shenhar|
Department: Faculty of Science, The Center for Nanoscience and Nanotechnology
University: Hebrew University of Jerusalem
Applications in photonics, diagnostics, solar cells, and others have resulted in development of organized nanoparticle/polymer composites. The self-assembly of block copolymers into well-defined structures offers a powerful platform enabling control of the morphology of the nanoparticle ensemble. Research has focused mainly on block copolymer-based nanocomposites consisting of spherical nanoparticles to date.
Recently a technique for organizing inorganic rod-shaped nanoparticles has been developed. The organization of inorganic nanorods is significant since the collective properties are strongly affected by rod alignment and internal organization.
This research will be of significant interest to those involved nanotechnology, chemistry & materials, nanoparticles, nanomaterials and nanostructures, semiconductors, structure and properties of materials, organic devices and dielectric properties.
The research is at the initial proof of concept stage and the research is ongoing. Patent applications have been filed in the US, Israel and Europe.
The research discusses the hierarchical, two-dimensional assemblies of semiconductor nanorods obtained by using the structures offered by block co-polymers in ultrathin films.
The key features of the technology include the following:
- Production of complex structures within structures of rod-shaped nanoparticles is enabled.
- Demonstrated control over three morphological parameters that include nanorod location, orientation, and the number of nanorods across the domain.
- Is applicable to other types of block copolymers and nanorods.
- A true bottom-up methodology: the structure evolves spontaneously by simply incubating a disordered composite film in solvent vapor.
Researchers are presently seeking funding for ongoing research directed at improving the long range ordering of these structures that will enable the performance of optical and conductance measurements and study of their distinct photo physical properties. This will lead to a better understanding of the type of applications that could benefit the most from such structures, and enable focus on the development of the corresponding devices.
About the Center for Nanoscience and Nanotechnology
Since nanotechnology has gained considerable significance in modern science and technology, the Hebrew University of Jerusalem established the Center for Nanoscience and Nanotechnology. The Center operates within the Faculty of Science and strives to create the required environment for the flow of expertise, knowledge and research between researchers from a range of disciplines that include physics, chemistry, applied and life sciences, medicine and engineering. It strives to bring together scientists from a number of disciplines that deal with nanotechnology. The center has around 40 member groups and desires to expand further by recruiting promising, young, faculty members.