Abstract: An optoacoustic sensor is configured to emit electromagnetic radiation and to detect acoustic waves, and a contact element is configured to be brought into contact with the object, the contact element being spaced from the optoacoustic sensor and being transparent to the electromagnetic radiation and the acoustic waves. Further, a scanning unit is configured to cause a movement of the optoacoustic sensor relative to the contact element, and a sealing element is configured to seal a space between the contact element and the optoacoustic sensor. The sealed space contains an acoustic coupling medium. At least a part of the sealing element is flexible to allow for the movement of the optoacoustic sensor relative to the contact element. Further, the optoacoustic sensor comprises a focused ultrasonic transducer configured to detect the acoustic waves generated in the object, the ultrasonic transducer having an axis of symmetry, and a light-emitting element configured to emit the electromagnetic radiation.

Abstract: The invention relates to a device and corresponding method for raster-scan optoacoustic imaging, the device comprising: a radiation source comprising at least one Raman laser source, the radiation source being configured to generate a plurality of pulses of electromagnetic radiation, each of the pulses comprising portions of electromagnetic radiation at two or more distinct wavelengths, and at least one acousto-optic tunable filter configured to select, from at least one of the pulses, one of the portions of electromagnetic radiation at one of the wavelengths; an irradiation unit configured to irradiate a region of interest of an object, in particular a biological tissue, with the selected portion of electromagnetic radiation of the at least one pulse; a detection unit configured to detect acoustic waves emitted from the region of interest in response to irradiating the region of interest with the selected portion of electromagnetic radiation of the at least one pulse; and a scanning unit configured to move t

Abstract: The invention relates to an apparatus for controlling the temperature of a freezable operating/auxiliary medium (12) which is stored in a reservoir (10) and is used for exhaust gas aftertreatment in compression ignition engines. An overmolding (22) on a heating element (56) forms a wall (50) of an intake duct (28) within a covering area (58).

Abstract: A method is disclosed for determining a current temperature of a heating element with a PTC thermistor property (PTC) with which a urea-water solution for cleaning the exhaust gas in an internal combustion engine of nitrogen oxides can be heated. According to the invention there is provision that a correction factor is formed from the quotient of a minimum resistance of the heating element and of a minimum resistance of a reference heating element, in that a resistance which is determined at a current temperature of the heating element is multiplied by the correction factor, and in that the current temperature of the heating element is determined from the corrected resistance value and a temperature dependence of the resistance of the reference heating element. The method according to the invention permits more precise determination and regulation of the temperature of the heating element.

Abstract: The invention relates to system for optoacoustic imaging, in particular for rasterscan optoacoustic mesoscopy (RSOM), and an according method for optoacoustic imaging data processing.

Abstract: An optoacoustic sensor is configured to emit electromagnetic radiation and to detect acoustic waves, and a contact element is configured to be brought into contact with the object, the contact element being spaced from the optoacoustic sensor and being transparent to the electromagnetic radiation and the acoustic waves. Further, a scanning unit is configured to cause a movement of the optoacoustic sensor relative to the contact element, and a sealing element is configured to seal a space between the contact element and the optoacoustic sensor. The sealed space contains an acoustic coupling medium. At least a part of the sealing element is flexible to allow for the movement of the optoacoustic sensor relative to the contact element. Further, the optoacoustic sensor comprises a focused ultrasonic transducer configured to detect the acoustic waves generated in the object, the ultrasonic transducer having an axis of symmetry, and a light-emitting element configured to emit the electromagnetic radiation.

Abstract: A method is disclosed for determining a current temperature of a heating element with a PTC thermistor property (PTC) with which a urea-water solution for cleaning the exhaust gas in an internal combustion engine of nitrogen oxides can be heated. According to the invention there is provision that a correction factor is formed from the quotient of a minimum resistance of the heating element and of a minimum resistance of a reference heating element, in that a resistance which is determined at a current temperature of the heating element is multiplied by the correction factor, and in that the current temperature of the heating element is determined from the corrected resistance value and a temperature dependence of the resistance of the reference heating element. The method according to the invention permits more precise determination and regulation of the temperature of the heating element.