Magneto-Optical Sensor

Magneto-optic eddy-current imaging. Magneto-optic eddy-current (MOI) images result from the response of the Faraday magneto-optic sensor to the weak magnetic fields that are generated when eddy currents induced by the MOI interact with defects in the inspected mate-... 

Sepulveda, B., Calle, A., Lechuga, L. M., Armelles, G. (2006) Highly sensitive detection of biomolecules with the magneto-optic surface-plasmon-resonance sensor. Optics Letter 31 1085-1087. 

Nanosized FezOs-SiOz composites are considered to be promising optical and magnetic materials, catalysts, and magneto-resistive sensors. To obtain the above composites most of authors [1,2] used the combined hydrolysis of Fe salt and tetraethylorthosilicate (TEOS) or introduction of Fe salt into silica sol prepared by TEOS hydrolysis. 

Optical phenomena depending on crystal structure Electro-optic effect Magneto-optic effect Photoelastic effect Optical switch Display Modulator, optical deflector Optical isolator Optical circuit device (active device) Optical fiber sensor... 

Nanocomposites containing metal nanoparticles have attracted a great deal of attention, with resulting magneto-optical properties that strongly depend on the structure, size, and dispersion of the embedded particles looking for their scientific and industrial applications in areas such as optical fiber sensors, optical isolators, information storage, and so on. The narrow particle size distribution and... 

More complex optical devices can be of the form electro-optical or magneto-optical responses. An electro-optical touch sensor was made up of alternating layers of metal Au and semiconduaing CdS nanopartides separated by dielectric... 

Acoustic methods are ideal for deep or turbid waters (unclear because of stirred-up sediment). Unlike optical methods, such as a laser or underwater camera, water characteristics such as turbidity and light penetration do not affect the acoustic sonar sensor. When a seabed obstruction is not completely covered by sand, it can easily be detected by sonar. However when a seabed obstruction is completely covered, standard sonar-based surveying techniques are not sufficient. In these cases, sub-bottom profiling and magneto-gradiometry are used to detect and localize the obstructions. Another problem arises since although these techniques can see beneath the seabed, they are not as accurate as the side scan or multibeam sonar. 

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