Purpose of the development: Preparation of nano- and microthreads with high thermoelectric efficiency and anizotroliz thermopower in different temperature ranges for miniature thermoelectric energy converters for various purposes, in particular, micro thermoelectric with low current consumption (hearing aids) by using the heat of the human body, highly template and cooling devices in the submicron size medicine, neurosurgery and oncology, cytological studies.

Recommended application field: At this time, for research of interest to nanowires in glass insulation. In practical terms, they are of interest after the creation on their basis in the form of sensitive sensor or thermocouple microcoolers for medical purposes, which can be used in neurosurgery and cytological studies.

Advantages over analogues: Such single-crystal fibers have reproducible parameters are stable over time. The advantage is that they are protected from environmental influences. Sensors working on them, are resistant to mechanical stress and corrosive media. In addition, manufacturability, and waste-free production put the thread out of the competition. There are exclusive features of thermoelectric cooling (based on the threads in the glass envelope) in medicine as compared to cryogenic liquid: -almost instantaneous change of the cooling and heating modes -very simple operation mode cooling-heating power supply current variation -design of thermoelectric coolers in the form microthermocouples in the glass envelope can reach almost any interior regions of the human body.

The development stage readiness: Pre-production model is made

Technical and economic effect: First obtained by single-crystal nanowires of bismuth single in the glass envelope with a diameter of up to 40 nm, which is implemented in the quantum size effect of the energy spectrum and the semimetal-semiconductor transition, accompanied by the increase in thermoelectric efficiency. Microthreads based BiSb and Bi2Te3 n and p type in the glass envelope with a high thermoelectric parameters can be used for cooling devices in medicine and cytological studies. High anizotroliz thermoelectric power in the filaments BiSb allowed to use them to create a mock-up of the thermoelectric generator of low power. For the first time in 50-nm filaments are found equidistant Bi-label field oscillations with a period of flux hc/2e, associated with the spin of an electron from the surface states. This opens up ways to use them in spintronics and nanoelectronics.

Description of the development:
()
Fabricated by casting from the liquid phase enhanced by Ulitovskoy thread with the given parameters and long to tens meters in the glass envelope. Cryogenic liquid and orientation of the samples were determined by X-ray diffraction (diffractometer firm Oxford Instruments). Production of high-performance thermoelectric materials is an extremely technologically advanced and virtually waste-free process of production, making it cost-effective in comparison with the known technology of manufacturing analogue massive thermoelectric materials.

Possibility of transfer abroad:
Licence's sale
Combinated reduction to industrial level

Photo

Country Moldova

For additional information turn to:
E-mail: gal@uintei.kiev.ua