FIELD: physics, instrument-making.
SUBSTANCE: disclosed thermostatic device for nanocalorimetric measurements on a chip with ultra-high heating and cooling rates provides stable transmission of an analogue signal from a nanocalorimetric sensor to an analogue-to-digital converter placed in an electronic controller; provides rigid mounting of the nanocalorimetric sensor in the active scanning region of a diffractometer or any other device for measuring structural characteristics of samples; and also enables to use, during measurements, an additional (reference) nanocalorimetric sensor for measuring the base line of the experiment, used for further processing of the obtained experimental data. The cooling system is fixed on the outer cover of the thermostatic device using spacers made of invar alloy, having a linear thermal expansion coefficient close to zero. Said fixation enables to achieve rigid mounting of the analysed sample, which eliminates the effect of thermal expansion of structural elements. This is crucial when conducting structural investigations. The structure of the disclosed device enables use thereof in any devices based on the use of separate material analysis methods, for example nanocalorimetric methods, optical microscopy, scanning probe microscopy, X-ray diffraction, and in devices combining two or more of said methods. The technical result improved functional capabilities of the device.
EFFECT: invention relates to instrument-making and can be used for nanocalorimetric measurements.
9 cl, 10 dwg
