Hansteen
Fredrik Hansteen, Groesbeek NL
Patent application number | Description | Published |
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20110058458 | MAGNETO--OPTICAL SWITCHING DEVICE AND METHOD FOR SWITCHING A MAGNETIZABLE MEDIUM - The invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the invention, a radiation system suited for imparting angular momentum to the magnetic spin system of said magnetizable medium, so as to selectively orient the magnetization of said medium. In addition, the invention relates to a method of switching a magnetizable medium, comprising providing a magnetizable medium; providing a radiation beam of a selectively chosen angular momentum; and targeting said radiation beam to said medium so as to transfer said angular momentum to a magnetic spin system of said magnetizable medium. Accordingly, spin states in magnetic materials can be manipulated using radiation of a suitable angular momentum. An effective magnetic field is generated for orienting the magnetization of the domains and can simultaneously be used to locally heat the material. | 03-10-2011 |
20120257483 | Magneto-Optical Switching Device And Method For Switching A Magnetizable Medium - The invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the invention, a radiation system suited for imparting angular momentum to the magnetic spin system of said magnetizable medium, so as to selectively orient the magnetization of said medium. In addition, the invention relates to a method of switching a magnetizable medium, comprising providing a magnetizable medium; providing a radiation beam of a selectively chosen angular momentum; and targeting said radiation beam to said medium so as to transfer said angular momentum to a magnetic spin system of said magnetizable medium. Accordingly, spin states in magnetic materials can be manipulated using radiation of a suitable angular momentum. An effective magnetic field is generated for orienting the magnetization of the domains and can simultaneously be used to locally heat the material. | 10-11-2012 |
Fredrik Hansteen, Leiden NL
Patent application number | Description | Published |
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20090274005 | METHOD FOR MONITORING A MULTI-LAYERED SYSTEM - A method for monitoring a multi-layered system below a surface comprising a slow layer and a fast layer; the method comprising: transmitting one or more seismic waves from one or more seismic sources through the multi-layered system; receiving signals emanating from the multi-layered system in response to the one or more seismic waves with one or more receivers located a distance from the one or more seismic sources; identifying one or more critically refracted compressional (CRC) waves amongst the signals; and inferring information about a change in the slow layer based on the one or more CRC waves; wherein the CRC wave is a refracted wave which has traveled along an interface between the fast layer and an adjacent layer. | 11-05-2009 |
20100312480 | METHOD FOR MONITORING FLUID FLOW IN A MULTI-LAYERED SYSTEM - A method for monitoring the movement of fluid through a subsurface formation of interest, comprising: a) providing a set of signals obtained by transmitting seismic waves through the formation of interest and receiving signals emanating from the multi-layered system in response to the seismic waves with one or more receivers located a distance from the seismic source(s), b) identifying one or more critically refracted waves among the signals so as to generate a first data set of refracted signals, c) repeating steps a) and b) after a period of time so as to generate a second data set of refracted signals, d) comparing the second data set to the first data set so as to generate a time-lapse data set, e) imaging the time-lapse data set using travel time tomography; and f) inferring information about the movement of fluid based on the image generated in step e). | 12-09-2010 |
Ole Henrik Hansteen, Oslo NO
Patent application number | Description | Published |
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20130337493 | QUALITY CONTRL DEVICES AND METHODS FOR RADIOPHARMACEUTICALS - A quality control (“QC”) system for PET or SPECT radiopharmaceuticals is disclosed that contains a disposable, no-leakage, self-contained QC cassette, which interfaces with the QC system. The QC system may include a shield that substantially surrounds the cassette such that the area and the cassette are both shielded. The QC cassette may contain shielding also. The QC cassette contains components for conducting one or more QC tests. These components include sensor and devices for performing various QC tests on radiopharmaceuticals. The QC system may contain a number of sub-systems and devices for supporting the QC tests. The QC system may produce a QC report containing the test results. | 12-19-2013 |