Abstract: A color measurement instrument for use with a single calibration plaque having a Region of Interest (ROI) and a focus target outside of the ROI, comprising a spectral engine, a camera, a processor, operatively connected to the spectral engine and the camera, and a non-volatile memory operatively connected to the processor, the non-volatile memory having instructions stored thereon, which, when executed by the processor, cause the processor to: activate the spectral engine to obtain a measurement within the ROI; calibrate the spectral engine with the obtained measurement; activate the camera to obtain an image of the calibration plaque including the focus target; calculate a current blur detection value for the focus target by comparing reference calibration measurements and the current measurement; retrieve a predetermined calibration blur detection value from the memory; and determine whether the current blur detection value is within a threshold tolerance of the calibration blur detection value.

Abstract: In a coil arrangement for nuclear magnetic resonance comprising a main coil (13), a shielding coil (14), and at least one correction coil (41), the function of which consists in forming a magnetic field gradient with eddy current properties which are as good as possible, the main coil (13) and the shielding coil (14) are electrically connected in series with the correction coil (41). The deviations of the residual field from the desired design generated by production tolerances are thereby modified by the correction coil in such a fashion that the long-lasting eddy currents are suppressed. This either reduces the waiting time that must lapse after a gradient pulse before a predetermined field homogeneity is achieved or e.g. the deviations from the desired field are minimized in imaging applications.

Abstract: In a coil arrangement for nuclear magnetic resonance comprising a main coil (13), a shielding coil (14), and at least one correction coil (41), the function of which consists in forming a magnetic field gradient with eddy current properties which are as good as possible, the main coil (13) and the shielding coil (14) are electrically connected in series with the correction coil (41). The deviations of the residual field from the desired design generated by production tolerances are thereby modified by the correction coil in such a fashion that the long-lasting eddy currents are suppressed. This either reduces the waiting time that must lapse after a gradient pulse before a predetermined field homogeneity is achieved or e.g. the deviations from the desired field are minimized in imaging applications.

Abstract: A nuclear magnetic resonance (NMR) probe component, comprising a microfabricated planar gradient chip (1), with a substrate thickness dgc?3 mm, carrying three micromachined planar partial gradient coils (10a-10f) on each of its two outer surfaces (12a, 13a), wherein the partial gradient coils (10a-10f) of the gradient chip (1) form a three-dimensional gradient system, wherein the gradient chip (1) has a central guiding and positioning slot (15) between the two outer surfaces (12a, 13a). The probe component also has a sample chip (2) for carrying an NMR sample at a sample location, with a microfabricated planar RF coil (21), wherein the sample chip (2) fits exactly in the guiding and positioning slot (15) such that in a measurement position, the sample location coincides with the center of the gradient system. The NMR probe component has improved spatial resolution and allows good alignment of the RF coil and the gradient system.

Abstract: A nuclear magnetic resonance (NMR) probe component, comprising a microfabricated planar gradient chip (1), with a substrate thickness dgc?3 mm, carrying three micromachined planar partial gradient coils (10a-10f) on each of its two outer surfaces (12a, 13a), wherein the partial gradient coils (10a-10f) of the gradient chip (1) form a three-dimensional gradient system, wherein the gradient chip (1) has a central guiding and positioning slot (15) between the two outer surfaces (12a, 13a). The probe component also has a sample chip (2) for carrying an NMR sample at a sample location, with a microfabricated planar RF coil (21), wherein the sample chip (2) fits exactly in the guiding and positioning slot (15) such that in a measurement position, the sample location coincides with the center of the gradient system. The NMR probe component has improved spatial resolution and allows good alignment of the RF coil and the gradient system.