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Your search keyword '"ter Brake, Hermanus J.M."' showing total 79 results
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79 results on '"ter Brake, Hermanus J.M."'

52. Development of a microminiature sorption cooler

Author

Burger, Johannes Faas, Holland, Herman J., van der Wekken, M., ter Brake, Hermanus J.M., Wade, L., Elwenspoek, Michael Curt, Rogalla, Horst, Watson, J.H.P., Scurlock, Ralph G., Dew-Hughes, David, Faculty of Science and Technology, and Energy, Materials and Systems

Subjects
IR-25238, METIS-130039
Published
1998

60. Toepassing van hoge-Tc supergeleiding in een 7-kanaals hartscanner

Author

ter Brake, Hermanus J.M. and Faculty of Science and Technology

Subjects
IR-78041, METIS-132864
Abstract

Op de valreep van 1995 werd in de leerstoel Lage Temperaturen van de Universiteit Twente de laaste hand gelegd aan een 7-kanaals magnetometer, uitgerust met zogenaamde hoge-Tc SQUIDs In januari 1996 werden hiermee de eerste hartslagmetingen in een magnetisch afgeschermde kamer verricht en werden magnetocardiogrammen geregistreerd. De 7-kanaals hartscanner is de eerste stap in de ontwikkeling van een magnetometer die eenvoudig te gebruiken is in standaard klinische omgevingen. In het hiernavolgend artikel wordt dit onderzoek, het zogenaamde hartscanner-project, beschreven.

Published
1996

67. Towards a high-Tc SQUID based heart-scanner

Author

Aarnink, W.A.M., van den Bosch, P.J., ter Brake, Hermanus J.M., Brons, G.C.S., Bruins, P., Flokstra, Jakob, Hilgenkamp, Johannes W.M., Holland, Herman J., Hoogeveen, S., Jaszczuk, W., Roelofs, T.M.R.A., Roesthuis, F.J.G., Rijnders, Augustinus J.H.M., Veldhuis, Dick, Verberne, J.F.C., Verbiesen, M., Vulink, B.W., IJsselsteijn, R.P.J., Rogalla, Horst, Doessel, O., and Physics of Interfaces and Nanomaterials

Subjects
=
Published
1994

68. A 19-channel dc-SQUID based neuromagnetometer

Author

ter Brake, Hermanus J.M., Flokstra, Jakob, Jaszczuk, W., Houwman, Evert Pieter, Veldhuis, Dick, Stammis, R., van Ancum, G.K., Martinez, A., Rogalla, Horst, and Hoke, Manfried

Subjects
METIS-130436
Published
1992

69. Integrated planar high Tc DC SQUIDs

Author

Hilgenkamp, Johannes W.M., IJsselsteijn, R.P.J., van den Bosch, P.J., ter Brake, Hermanus J.M., and Flokstra, Jakob

Subjects
METIS-134275
Published
1992

71. 19-Kanaals dc SQUID neuromagnetometer

Author

ter Brake, Hermanus J.M., Flokstra, Jakob, Jaszczuk, W., Houwman, Evert Pieter, Veldhuis, Dick, Stammis, R., Martinez, A., and Rogalla, Horst

Subjects
METIS-129869
Published
1992

72. High Tc dc-SQUIDs

Author

Hilgenkamp, Johannes W.M., IJsselsteijn, R.P.J., Nilsson, P.A., Wijbrans, R.A., Eisenberg, M., Jaszczuk, W., van den Bosch, P.J., ter Brake, Hermanus J.M., Flokstra, Jakob, and Rogalla, Horst

Subjects
METIS-134320
Published
1991

73. A 19-channel dc-SQUID based neuromagnetometer

Author

ter Brake, Hermanus J.M., Flokstra, Jakob, Jaszczuk, W., Houwman, Evert Pieter, Veldhuis, Dick, Stammis, R., van Ancum, G.K., Martinez, A., and Rogalla, Horst

Subjects
METIS-131308
Published
1991

74. Improvement of the performance of a u-metal magnetically shielded room by means of active compensation

Author

ter Brake, Hermanus J.M., Wieringa, H.J., Rogalla, Horst, Faculty of Science and Technology, and Energy, Materials and Systems

Subjects
Condensed Matter::Materials Science, IR-60690, METIS-129144
Abstract

An active compensation technique is presented for improving the performance of a mu -metal magnetically shielded room. Active compensation is established by measuring the magnetic field inside the room by a SQUID magnetometer. The output of this sensor is amplified and connected to a coil surrounding the room. The magnetic field generated in this way compensates the measured field inside the room. Active compensation was tested for magnetic fields in the vertical direction in a shielded room with one mu -metal shield. At low frequencies a shielding improvement of typically 40 dB was obtained. Measurements performed on a room with two mu -metal shields indicated that the attainable improvement is not limited by the amount of mu -metal applied in the room. The active compensation set-up is described in detail and experiments performed on the two magnetically shielded rooms are presented and discussed.

Published
1991

76. Multi-channel DC-SQUID magnetometer project

Author

Flokstra, Jakob, Martinez, A., Houwman, Evert Pieter, Veldhuis, Dick, Caspari, M., ter Brake, Hermanus J.M., Rogalla, Horst, Benacka, S., and Kendro, M.

Subjects
METIS-129766
Published
1990

77. Electronic balancing of multichannel SQUID-magnetometers

Author

ter Brake, Hermanus J.M., Dunajski, Z., van der Mheen, W.A.G., Flokstra, Jakob, Faculty of Science and Technology, and Energy, Materials and Systems

Subjects
Physics, Superconductivity, Squid, biology, business.industry, Magnetometer, General Engineering, Electrical engineering, General Physics and Astronomy, law.invention, Nuclear magnetic resonance, law, biology.animal, General Materials Science, IR-60637, business, METIS-129297, Instrumentation
Abstract

An electronically balanced three-channel SQUID magnetometer is presented. The electronic balancing reduces the imbalance of the gradiometers by at least a factor of 100. The authors realised in this way an imbalance of 10-5, without the necessity of prebalancing by means of superconducting tabs. Details of the design considerations and the construction of the three-channel system are given, focusing especially on the electronic balancing unit. Some illustrating experiments are also described and the possibilities of electronic balancing discussed

Published
1989

79. Squid magnetometers for material research

Author

Blank, David H.A., ter Brake, Hermanus J.M., Flokstra, Jakob, Faculty of Science and Technology, Energy, Materials and Systems, and Inorganic Materials Science

Subjects
IR-57076
Published
1985

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