公开(公告)号：EP0789840B1

公开(公告)日：1999-08-25

申请号：EP95935825.0

申请日：1995-10-30

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： SZOT, Krzysztof ,  OTTO, Ralph ,  HERION, Jörg

IPC分类号： G01N27/00 ,  G01R1/18

CPC分类号： G01Q20/00

公开(公告)号：EP1810022A1

公开(公告)日：2007-07-25

申请号：EP05804560.0

申请日：2005-10-15

申请人： Forschungszentrum Jülich GmbH

发明人： ZHANG, Yi ,  WROBEL, Günter ,  WOLTERS, Norbert ,  INGEBRANDT, Sven ,  KRAUSE, Hans-Joachim ,  OTTO, Ralph

IPC分类号： G01N33/487 ,  G01N27/02

CPC分类号： G01N33/48728

摘要： The invention relates to a device for recording electrical signals from cells (Isig), immobilised on an electrode, whereby the electrode is formed of a parallel circuit of a capacitance (Ce) and a resistance (Re). The device is directly connected to an amplifier (OP) for signal transmission. A broadband and low-noise measurement of signals from the cells is thus possible.

公开(公告)号：EP1379887A2

公开(公告)日：2004-01-14

申请号：EP02740234.6

申请日：2002-04-06

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： ZHANG, Yi ,  OTTO, Ralph ,  WOLTERS, Norbert

IPC分类号： G01R33/035

CPC分类号： G01R33/0354

摘要： The inventive method for operating a dc SQUID (A) with a parallel-connected coupling transformer (B) comprises a step, wherein a non-constant ac bias current (Ib) is supplied. Said supplied non-constant ac bias current compensates the current (Ic) induced by the transformer in such a way that the current flowing through the SQUID has a periodic rectangular function. This makes it possible to advantageously achieve low-noise operation of up to high reversal frequencies of over 100 kHz.

公开(公告)号：EP1537409B1

公开(公告)日：2006-10-11

申请号：EP03747829.4

申请日：2003-09-05

申请人： Forschungszentrum Jülich GmbH

发明人： SCHÖNING, Michael Josef ,  OTTO, Ralph ,  YOSHINOBU, Tatsuo, c/o ISIR Osaka University ,  IWASAKI, Hiroshi, c/o ISIR Osaka University

IPC分类号： G01N27/30

CPC分类号： G01N27/305

摘要： The invention relates to a light source (2) for a measuring system comprising a photosensitive electrode (3) that is used for detecting one or several analytes. Said light source (2) is provided with means, particularly curved optical fibers (42) or rotatable perforated disks (32), for locally illuminating the photosensitive electrode (3), allowing illumination arrays which are controlled in a complex manner and locally illuminate the photosensitive electrode (3) to be advantageously dispensed with while making the measuring system portable and miniaturizable. Such light sources (2) can generally be used in sensors or microscopes, particularly in microscopes, e.g. scanning probe microscopes.

公开(公告)号：EP1537409A1

公开(公告)日：2005-06-08

申请号：EP03747829.4

申请日：2003-09-05

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： SCHÖNING, Michael Josef ,  OTTO, Ralph ,  YOSHINOBU, Tatsuo,c/o ISIR Osaka University ,  IWASAKI, Hiroshi,c/o ISIR Osaka University

IPC分类号： G01N27/30

CPC分类号： G01N27/305

摘要： The invention relates to a light source (2) for a measuring system comprising a photosensitive electrode (3) that is used for detecting one or several analytes. Said light source (2) is provided with means, particularly curved optical fibers (42) or rotatable perforated disks (32), for locally illuminating the photosensitive electrode (3), allowing illumination arrays which are controlled in a complex manner and locally illuminate the photosensitive electrode (3) to be advantageously dispensed with while making the measuring system portable and miniaturizable. Such light sources (2) can generally be used in sensors or microscopes, particularly in microscopes, e.g. scanning probe microscopes.

公开(公告)号：EP1537408A1

公开(公告)日：2005-06-08

申请号：EP03747828.6

申请日：2003-09-05

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： SCHÖNING, Michael, Josef ,  OTTO, Ralph ,  YOSHINOBU, Tatsuo ,  IWASAKI, Hiroshi

IPC分类号： G01N27/30

CPC分类号： G01N27/305

摘要： The invention relates to a portable measuring system which detects one or several analytes and comprises a container (1), a photosensitive electrode (3), and one or several light sources (2). The inventive measuring system is characterized by the fact that the light source (2) or light sources (2) is/are disposed inside the container (1), resulting in a compact, small, and modularly structured measuring system. Preferably, the photosensitive electrode (3) is arranged within the wall of the container (1) as a part thereof.

公开(公告)号：EP1344049B1

公开(公告)日：2004-05-12

申请号：EP01989416.1

申请日：2001-12-15

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： SCHÖNING, Michael, Josef ,  OTTO, Ralph ,  JOHNEN, Frank

IPC分类号： G01N27/414 ,  G01N27/22 ,  G01N27/02

CPC分类号： G01N27/227 ,  G01N27/3275

摘要： The invention relates to an electronic measuring instrument for detection of chemical or biochemical components in liquids or gases. The invention further relates to a method for detection of said components in liquids or gases. The measuring instrument for determination of the chemical or biochemical components, comprises a probe construction, made from a sensor and reference electrode, a DC source, connected to a potentiostat, a signal generator, a voltage regulated current source, connected to the sensor, a measured value amplifier and a converter and an integral controller, connected to the signal generator. The method for detection of an analyte substance by means of a measuring instrument, comprising a detection circuit is based on holding the impedance of the sensor constant during the determination.

公开(公告)号：EP1344049A2

公开(公告)日：2003-09-17

申请号：EP01989416.1

申请日：2001-12-15

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： SCHÖNING, Michael, Josef ,  OTTO, Ralph ,  JOHNEN, Frank

IPC分类号： G01N27/414 ,  G01N27/22 ,  G01N27/02

CPC分类号： G01N27/227 ,  G01N27/3275

摘要： The invention relates to an electronic measuring instrument for detection of chemical or biochemical components in liquids or gases. The invention further relates to a method for detection of said components in liquids or gases. The measuring instrument for determination of the chemical or biochemical components, comprises a probe construction, made from a sensor and reference electrode, a DC source, connected to a potentiostat, a signal generator, a voltage regulated current source, connected to the sensor, a measured value amplifier and a converter and an integral controller, connected to the signal generator. The method for detection of an analyte substance by means of a measuring instrument, comprising a detection circuit is based on holding the impedance of the sensor constant during the determination.

公开(公告)号：EP0789840A1

公开(公告)日：1997-08-20

申请号：EP95935825.0

申请日：1995-10-30

申请人： FORSCHUNGSZENTRUM JÜLICH GMBH

发明人： SZOT, Krzysztof ,  OTTO, Ralph ,  HERION, Jörg

IPC分类号： G01B7 ,  G01N27 ,  G01Q20 ,  G01R1 ,  G01R15 ,  G01R19 ,  H01J37

CPC分类号： G01Q20/00

摘要： Described is a current/voltage transformer for the detection of small, transient currents, the transformer having a reaction resistance disposed in the path of the current being measured. In order to compensate for parasitic capacitances and to increase the transmission frequency, the reaction resistance has an equipotential screen surrounding it so that it is electrically insulated. The current path is protected from electrical interference fields byu floating screening (11). Described is a current/voltage transformer for the detection of the current flowing between the tip of the probe and the specimen surface in a scanning tunnelling-electron microscope, the transformer having a reaction resistance disposed in the electron-current path. In order to compensate for parasitic capacitances in the electron-current path and to increase the transmission frequency, an electrometer amplifier (8) is connected in series with a fast low-impedance operational amplifier (14), the output (9) of the electrometer amplifier (8) being connected to floating screening (11) round the electron-current path (3). The reaction resistance (4) is provided with an equipotential screen (5).