This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1166/sl.2009.1054 in citations.
HTS rf SQUID System for Magnetic Nanoparticle Detection
HTS rf SQUID System for Magnetic Nanoparticle Detection
A gradiometric high temperature superconducting rf SQUID sensor made of Yttrium barium copper oxide is integrated in a microfluidic instrument for readout of magnetic nanoparticle (MNP) assays. Sample handling and freely adjustable distance of sample to sensor is achieved by guiding a capillary thro...
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Personal Name(s): | Pretzell, A. |
---|---|
Krause, H.-J. / Zhang, Y. / Offenhäusser, A. | |
Contributing Institute: |
Institut für Bio- und Nanosysteme - Bioelektronik; IBN-2 JARA-FIT; JARA-FIT |
Published in: | Sensor letters, 7 (2009) 3, S. 286 - 288 |
Imprint: |
Stevenson Ranch, Calif.
American Scientific Publishers
2009
|
Physical Description: |
286 - 288 |
DOI: |
10.1166/sl.2009.1054 |
PubMed ID: |
18421121 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Sensor Letters
7 |
Subject (ZB): | |
Publikationsportal JuSER |
A gradiometric high temperature superconducting rf SQUID sensor made of Yttrium barium copper oxide is integrated in a microfluidic instrument for readout of magnetic nanoparticle (MNP) assays. Sample handling and freely adjustable distance of sample to sensor is achieved by guiding a capillary through the vacuum along the SQUID. Cooling is realized by means of inserting the SQUID directly into a slit in a sapphire finger. The particles are excited by a transverse magnetic field. The readout can be performed in relaxometric, susceptometric or frequency mixing mode. The system is designed to test different readout schemes and to determine the detection limit of MNP for biological concentration determination assays using the excellent sensitivity of a SQUID. |