scholarly journals A new family of field-stable and highly sensitive SQUID current sensors based on sub-micrometer cross-type Josephson junctions

2017 ◽  
Vol 30 (7) ◽  
pp. 074010 ◽  
Author(s):  
M Schmelz ◽  
V Zakosarenko ◽  
T Schönau ◽  
S Anders ◽  
J Kunert ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
New Family ◽  
Highly Sensitive ◽  
Current Sensors ◽  
Cross Type

Magnetic Spin Valve Sensors with Different Geometry to Magnetic Bead Detection for Biosensor Application

2007 ◽  
Vol 1032 ◽  
Author(s):  
Jeong Dae Suh ◽  
Myung Ae Chung
Keyword(s):  
Magnetic Beads ◽  
Spin Valve ◽  
Magnetic Bead ◽  
Highly Sensitive ◽  
Magnetic Spin ◽  
Biosensor Application ◽  
Detection Of Biomolecules ◽  
Meander Line ◽  
Cross Type ◽  
Line Type

AbstractWe have demonstrated the use of highly sensitive spin valve sensors for the detection of micron magnetic beads. By using a ring type, cross type, and meander line type sensors, we were able to detect the presence of 2.8 μm size magnetic beads in real time by direct measurement of magnetic dipole fields from magnetic beads. The sensitivity of the ring, cross and meander line sensors were obtained about 50 μV/Oe, 7 μV/Oe, 30 μV/Oe and sensor output signals of 50 μV , 30 μV, 90 μV were obtained in an external applied field of 10 Oe and 1 mA sense current. Our results shows that ring, cross, and meander line shape spin valve sensors are very promising candidates for the detection of biomolecules with magnetic labels.

scholarly journals Effect of cross-type bias in a two-dimensional array of short Josephson junctions

1998 ◽  
Vol 72 (9) ◽  
pp. 1107-1109 ◽  
Author(s):  
G. Filatrella ◽  
N. F. Pedersen ◽  
K. Wiesenfeld
Keyword(s):  
Josephson Junctions ◽  
Two Dimensional ◽  
Dimensional Array ◽  
Cross Type

Cross-type submicron josephson junctions using SNS technology for josephson voltage standard applications

2003 ◽  
Vol 13 (2) ◽  
pp. 142-145 ◽  
Author(s):  
T. May ◽  
M. Schubert ◽  
G. Wende ◽  
U. Hubner ◽  
L. Fritzsch ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Voltage Standard ◽  
Cross Type

Chemical–Mechanically Planarized Cross-Type Josephson Junctions in Nb-Al-AlOx-Nb Technology

2017 ◽  
Vol 27 (5) ◽  
pp. 1-4
Author(s):  
Solveig Anders ◽  
Matthias Schmelz ◽  
Dirk Franke ◽  
Ronny Stolz ◽  
Hans-Georg Meyer
Keyword(s):  
Josephson Junctions ◽  
Cross Type

Highly sensitive miniature SQUID magnetometer fabricated with cross-type Josephson tunnel junctions

2012 ◽  
Vol 476 ◽  
pp. 77-80 ◽  
Author(s):  
M. Schmelz ◽  
R. Stolz ◽  
V. Zakosarenko ◽  
S. Anders ◽  
L. Fritzsch ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Squid Magnetometer ◽  
Highly Sensitive ◽  
Josephson Tunnel ◽  
Cross Type ◽  
Josephson Tunnel Junctions

scholarly journals Evaluation of Self-Field Effects in Magnetometers Based on Meander-Shaped Arrays of Josephson Junctions or SQUIDs Connected in Series

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1588
Author(s):  
Denis Crété ◽  
Julien Kermorvant ◽  
Yves Lemaître ◽  
Bruno Marcilhac ◽  
Salvatore Mesoraca ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Quantum Interference ◽  
Dynamic Range ◽  
Bias Current ◽  
The Self ◽  
Superconducting Quantum Interference Devices ◽  
Field Effects ◽  
Highly Sensitive ◽  
In Series ◽  
Partial Compensation

Arrays of superconducting quantum interference devices (SQUIDs) are highly sensitive magnetometers that can operate without a flux-locked loop, as opposed to single SQUID magnetometers. They have no source of ambiguity and benefit from a larger bandwidth. They can be used to measure absolute magnetic fields with a dynamic range scaling as the number of SQUIDs they contain. A very common arrangement for a series array of SQUIDs is with meanders as it uses the substrate area efficiently. As for most layouts with long arrays, this layout breaks the symmetry required for the elimination of adverse self-field effects. We investigate the scaling behavior of series arrays of SQUIDs, taking into account the self-field generated by the bias current flowing along the meander. We propose a design for the partial compensation of this self-field. In addition, we provide a comparison with the case of series arrays of long Josephson junctions, using the Fraunhofer pattern for applications in magnetometry. We find that compensation is required for arrays of the larger size and that, depending on the technology, arrays of long Josephson junctions may have better performance than arrays of SQUIDs.

scholarly journals A survey of radio sources at 3.5-m wavelength

1959 ◽  
Vol 9 ◽  
pp. 498-506
Author(s):  
B. Y. Mills
Keyword(s):  
Radio Telescope ◽  
Radio Sources ◽  
Pencil Beam ◽  
Radio Frequency Radiation ◽  
Cassiopeia A ◽  
Highly Sensitive ◽  
Accurate Position ◽  
Cross Type ◽  
Frequency Radiation ◽  
Beam Instrument

Since their discovery in 1946, the discrete sources of radio-frequency radiation have provided some of the most difficult problems in radio astronomy. For their effective study, one requires a very highly sensitive radio telescope sufficiently precise for accurate position determination and with sufficient resolution to observe separately the detectable radio sources. These requirements led to the development of the Sydney 3.5-m Cross-type radio telescope, which is a pencil-beam instrument with a beamwidth of about 50 minutes of arc and a sensitivity such that under ideal conditions a source of intensity about 1/10,000 that of the strongest known source, Cassiopeia A, is just detectable.

Viscosity sensitive near-infrared fluorescent probes based on functionalized single-walled carbon nanotubes

2020 ◽  
Vol 56 (59) ◽  
pp. 8301-8304
Author(s):  
Fei Liu ◽  
Ziwen Yuan ◽  
Xiao Sui ◽  
Chaojun Wang ◽  
Meiying Xu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fluorescent Probes ◽  
Near Infrared ◽  
Single Walled Carbon Nanotubes ◽  
Photoluminescence Emission ◽  
Single Walled Carbon ◽  
New Family ◽  
Highly Sensitive ◽  
Walled Carbon Nanotubes

A new family of viscosity sensitive near-infrared fluorescent probes is created by grafting rotors on single walled carbon nanotubes. The new photoluminescence emission peaks are highly sensitive to the viscosity of solutions.

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