A kind of device is used for material property, design effective sensor is contacted with substance, including element, with rigid surface, at least one sensor arrangement which is provided with, and mechanism causes power to be applied to soft submissive substance, the surface of the line of force and rigidity is at an acute angle, against the surface extension of rigidity or stretching, extension and to push away soft substance, thus effective contact between realizing, the substance and at least one sensor. Therefore, the accuracy of sensing is improved. According to another embodiment, using multiple sensors, multiple sensor is arranged along curved element, provides three-dimensional information related with substance, for example, passing through minicomputer tomography. Optionally, which includes structure First mechanism is configured to apply the first power on substance, for introducing a substance into the structure, so as to approximately fixed substance With the second mechanism, it is configured on the outer surface that at least one sensor is pressed against to fixed substance, thus apply the second power on fixed substance, first power of a wherein at least component is opposite at least component of the second power, fixed substance is pushed against at least one sensor, and at least one sensor is pushed against on fixed substance, causes the effective contact between at least one sensor and the substance of fixation. Substance can be in vitro or in body tissue or biopsy sample. OrIt can be another softness, flexible substance, such as hydrogel or elastomer.
