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Licencia para un termómetro de ruido basado en SQUID para medir temperaturas termodinámicas en el rango de baja temperatura

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20190328009
Publicado:
03/04/2019
Caducidad:
03/04/2020
Resumen:
Un instituto de investigación alemán ha desarrollado un termómetro de ruido basado en SQUID (dispositivo superconductor de interferencia cuántica) para medir temperaturas termodinámicas en el rango de baja temperatura. La aplicación de termómetros de ruido es útil como termómetro de referencia a bajas temperaturas (< 1 K), especialmente por debajo de 10 mK. Este sistema ofrece como ventajas 1) la previsibilidad total y sencilla del termómetro, 2) el sensor de temperatura térmicamente robusto y la integración sencilla en criostatos, 3) la aplicación del método de correlación cruzada y comprobaciones de coherencia gracias a los dos canales de señales independientes, y 4) el ensamblaje con dos posiciones de los chips en distancias libremente seleccionadas en el sensor de temperatura y calibración in situ del gradiómetro SQUID. El instituto de investigación busca licenciatarios.

Details

Tittle:
License for SQUID-based noise thermometer to measure thermodynamic temperatures in the low-temperature range
Summary:
A German research institute has developed a SQUID-based (superconducting quantum interference device) noise thermometer to measure thermodynamic temperatures in the low-temperature range. The application of noise thermometers is useful as a reference thermometer at low temperatures (< 1 K), especially below 10 mK. Noise thermometers cover the entire temperature range of at least 0.9 mK to 4.2 K. The research institute is searching for licensees.
Description:
A German research institute active in metrology in Germany has developed a SQUID-based (superconducting quantum interference device) noise thermometer to measure thermodynamic temperatures in the low-temperature range.
Magnetic field fluctuation thermometers (MFFT) are SQUID-based noise thermometers used for deep temperatures (typically below 5K). They detect the fluctuations of the magnetic field on the surface of an electrically conductive body ("temperature sensor"), which are linked to the thermally excited currents flowing inside. Based on the new, fully predictable sensor, it is possible to measure thermodynamic temperature structures with the offered device, which eliminates the otherwise necessary return to the international temperature scales ITS-90 (International Temperature Scale of 1990) and PLTS-2000 (Provisional Low Temperature Scale of 2000) for the first time .

The offered device consists of four main components:
1) A metallic temperature sensor made of high purity copper
2) Two planar, gradiometric detection coils on a Si-chip which are read out by two DC SQUID power sensors
3) One planar calibration coil on a Si-chip
4) A two-channel -SQUID- electronic

The actual temperature sensor is formed by the central area of the copper body above the detection coils. At this point, the thermal magnetic flux noise is measured via two independent SQUID-gradiometers and evaluated by using the cross-correlation method, which reduces all non-thermal noise proportions. With known geometry and electrical conductivity of the sensor, the temperature can be calculated from the noise spectra.
The research institute is searching for licensees.
Advantages and Innovations:
The described system offers several advantages compared with state of the art test benches:
- Full and simple predictability of the thermometer
- Thermally robust temperature sensor, easy integration in cryostats
- Two independent signal channels enable the application of the cross correlation method as well as consistency checks
- Assembly with two positions for coil chips in freely selectable distances to the temperature sensor, in situ calibration of the SQUID gradiometer
Stage of Development:
Field tested/evaluated
IPs:
Granted patent or patent application essential

Partner sought

Type and Role of Partner Sought:
Targeted partners are either active in the development of SQUID-based noise thermometer for deployment as reference thermometer in low temperatures. The institute looks for licensees.

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
German

Keywords

Technology Keywords:
09001010 Ensayos de material térmico
09005 Materiales de referencia
09001008 Otros ensayos no destructivos
09001004 Tecnología eléctrica relacionada con la realización de medidas