Operation of a high-T-C SQUID gradiometer with a two-stage MEMS-based Joule-Thomson micro-cooler
Artikel i vetenskaplig tidskrift, 2016

Practical applications of high-T-C superconducting quantum interference devices (SQUIDs) require cheap, simple in operation, and cryogen-free cooling. Mechanical cryo-coolers are generally not suitable for operation with SQUIDs due to their inherent magnetic and vibrational noise. In this work, we utilized a commercial Joule-Thomson microfluidic two-stage cooling system with base temperature of 75 K. We achieved successful operation of a bicrystal high-T-C SQUID gradiometer in shielded magnetic environment. The micro-cooler head contains neither moving nor magnetic parts, and thus does not affect magnetic flux noise of the SQUID even at low frequencies. Our results demonstrate that such a microfluidic cooling system is a promising technology for cooling of high-T-C SQUIDs in practical applications such as magnetic bioassays.

superconducting quantum interference device


high-TC planar SQUID gradiometers


Alexei Kalaboukhov

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

E. J. de Hoon

Kryoz Technologies B.V.

K. Kuit

Kryoz Technologies B.V.

Ppppm Lerou

Kryoz Technologies B.V.

Maxim Chukharkin Leonidovich

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Justin Schneiderman

Göteborgs universitet

Sobhan Sepehri

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Anke Sanz-Velasco

IMT Masken und Teilungen AG

Aldo Jesorka

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Dag Winkler

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Superconductor Science and Technology

0953-2048 (ISSN) 1361-6668 (eISSN)

Vol. 29 9 095014


Nanovetenskap och nanoteknik


Elektroteknik och elektronik


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