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The microwave method for determining the thermophysical characteristics of multilayer building structures and products is proposed in the article, which allows nondestructive testing of such thermophysical characteristics of the studied objects as thermal conductivity and thermal diffusivity through the use of non-contact heating by microwave electromagnetic energy. The proposed method is accurate enough for the technological control of the thermophysical characteristics of building materials and products, which allows it to be used in the practice of thermophysical measurements, in building heat engineering and various industries.

A new tunnel resonance method to estimate the concentration of nano-sized objects in the product obtained by plasma-chemical synthesis compared to pure fullerene is proposed. We have complied tunnel resonant structure (TRS) which includes two barrier layers (silicon oxide and silicon monoxide) with nanosized particles layer between them, placed on the surface of silicon plate and covered by copper layer. The obtained TRS is connected to power supply circuit, current recorder and voltage register. Based on measured current-voltage characteristic the local current maxima and resonant potentials have been determined. The concentration of nano-sized objects in the synthesis products was estimated from the current amplitude for the corresponding resonant potentials. The article provides theoretical substantiation of the proposed methodology and considers its practical implementation.