INTEGRATION OF Ge NANOWIRE ARRAYS IN GLASS MICRO-FIBERS
Том 47 № 2 (2011), Содержание
Том 47 № 2 (2011)

INTEGRATION OF Ge NANOWIRE ARRAYS IN GLASS MICRO-FIBERS

A. Ioisher
ELIRI Research Institute, Miron Costin str. 5, Chisinau MD-2045, Moldova
E. Badinter
ELIRI Research Institute, Miron Costin str. 5, Chisinau MD-2045, Moldova
E. Monaico
National Center for Materials Study and Testing, Technical University of Moldova, Bd. Stefan cel Mare 168, Chisinau MD-2004, Moldova
V. Postolache
National Center for Materials Study and Testing, Technical University of Moldova, Bd. Stefan cel Mare 168, Chisinau MD-2004, Moldova
H.L. Hartnagel
Institute for High Frequency Electronics, Technical University Darmstadt, Darmstadt D-64283, Germany
N. Leporda
Laboratory of Nanotechnology, Institute of Electronic Engineering and Nanotechnologies, Academy of Sciences of Moldova, Academy str. 3/3, Chisinau, MD-2028 Moldova, tiginyanu@asm.md
I. Tiginyanu
National Center for Materials Study and Testing, Technical University of Moldova, Bd. Stefan cel Mare 168, Chisinau MD-2004, Moldova, Laboratory of Nanotechnology, Institute of Electronic Engineering and Nanotechnologies, Academy of Sciences of Moldova, Academy str. 3/3, Chisinau, MD-2028 Moldova, tiginyanu@asm.md

Аннотация

We report on a technological route for the integration of large arrays of Ge nanowires (NWs) in a human-hair-like glass micro-fiber, the length of the micro-fiber reaching one meter. The route comprises (a) the formation of semiconductor microwire in glass insulation by capillary drawing from the bottom of a glass tube softened by a conducting Ge melt drop levitating in the high-frequency electromagnetic induction field; (b) mechanical assembly of a bundle from equal-length cut microwires which are distributed in a two- dimensional quasi-hexagonal densely packed lattice encircled by a joint glass envelope; (c) stretching of the obtained preform under proper heating conditions to reduce the diameters of the stacked together microwires; (d) repeating the cut-assembly-stretching processes for the purpose of further decreasing in transverse dimensions of constituents down to 150 nm. The fascinating incorporation of huge amounts of Ge nanowires in glass micro-fibers opens new possibilities for the development of highly integrated photonic and quantum-electronic systems.

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