A scanning microscope for high resolution current imaging by direct magnetic field sensing of a sample maintained in an ambient environment. The scanning microscope uses a magnetic sensor such as a SQUID and a fiber probe magnetically coupled between the SQUID sensor and the sample under study. The fiber probe has a sharply defined tip for high resolution probing and for reaching minute cavities on the surface of the sample. The coupling between the tip of the fiber probe and the sample is controlled by a distance control mechanism, in the range of 1-100 nm. The material of the fiber probe with high permeability and low magnetic noise is chosen to optimize flux transmission to the magnetic sensor. Magnetic coupling to the sensor is maximized by keeping the distance between the end of the fiber probe and the sensor to approximately 0-100 μm. The fiber probe is integrated into the fiber holder for easy replacement of the fiber probe.

Hybrid squid microscope with magnetic flux-guide for high resolution magnetic and current imaging by direct magnetic field sensing

Method and system for high resolution current imaging by direct magnetic field sensing

Techniques are described for determining cognitive impairment, an example of which includes accessing a set of epochs of magnetoencephalography (MEG) data of responses of a brain of a test patient to a plurality of auditory stimulus events; processing the set of epochs to identify parameter values one or more of which is based on information from the individual epochs without averaging or otherwise collapsing the epoch data. The parameter values are input into a model that is trained based on the parameters to determine whether the test patient is cognitively impaired.

Methods and magnetic imaging devices to inventory human brain cortical function

A self-adjusting assembly and method are disclosed. In the disclosed embodiments, a support assembly for supporting a device comprises a pair of support members (4) for supporting the device (11). One of the members (4) is adapted to help support the device (11) from a ground (5), and another of the members (8) is adapted to provide lateral support for the device (11) and to permit free longitudinal movement of the device as it expands or contracts due to temperature variations.

Self-adjusting assembly and method for close tolerance spacing

L'invention concerne un ensemble et un procede de reglage automatique. Dans les modes de realisation decrits, un ensemble de support destine a supporter un dispositif comprend deux elements de support de ce dispositif. L'un des elements est concu de facon a faciliter le maintien du dispositif a distance d'une surface d'appui, et l'autre etant concu de facon a fournir un support lateral audit dispositif et a autoriser le deplacement libre de ce dispositif dans le sens de la longueur au gre de dilatations et de contractions dues a des variations de temperature.

Ray Edmund Sarwinski

Papers

Self-adjusting assembly and method for close tolerance spacing

Ensemble et procede de reglage automatique d'espacement a faible tolerance