Kolloquiumsvortrag: Prof. Dr. Oleg Lupan, Technical University of Moldova / 30.11.15
30.11.2015 von 17:15 bis 18:45
Institut für Materialwissenschaft, Kaiserstr. 2, 24143 Kiel, Geb. D, Raum: "Aquarium"
Titel:
Nanostructuring semiconducting oxides for nanodevices
Abstract:
Development of multifunctional nanosensors based on new advanced functional nano-materials is in the focus of the research community nowadays, since it is one of the largest and fastest evolving market segment, with revenues expected to surpass several trillion Euros soon. Scientific research on nano-materials contributes to miniaturization and improvements in the size, detection range, reliability, selectivity and sensitivity of existing solid-state sensors and light/image detectors, which are the key components of many electronic and optoelectronic circuits. Nanodevices which can perform multiple tasks are of high demand for intelligent portable devices with small sizes (e.g. smartphones with environmental sensors) and other applications (ranging from high-capacity information storage to biochemical sensing, chemical and biological analysis, and astronomy) due to very low power consumption and improved performances.
Thus, research on semiconducting oxide nanocrystals will likely remain one of the leading topics in condensed matter physics and advanced functional materials science for many years. Looking beyond this field, nanostructuring nanocrystal systems based on single or mixed phases of oxides have been assembled into designer structures in a precisely chosen sequence. This creates opportunities to study novel electrical, physical, and sensorial phenomena followed by implementation in nanodevice applications which are not possible with ordinary bulk materials and classical technologies.
In this talk, an overview across the field of semiconducting oxides will be given, namely nano-ZnO, CuO, SnO2, MoO3, and their nanostructuring by different nanotechnological approaches, which can be scaled-up to industrial scale. The challenges to employ the properties of semiconducting oxides on practical application grounds will be discussed and strategies will be outlined for their fabrication, characterization, and nanodevice integration by bottom-up technologies. Integration and applications in the single nanowire, nanorod, tripod, and tetrapod as sensing devices and in special as multifunctional nanosensors will also be discussed.
Furthermore, the contribution of crystalline nanosensing and nanophotonical systems will be emphasized to act as an enabling technology for scientific achievements in other research fields.
In this talk, semiconducting oxides as main nano-blocks for nanodevices, namely our contribution to building a new road to nanodevices from top-down to bottom-up to hybrid nanotechnologies will be discussed.