International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The principles and peculiarities of the molecular layering (ML) method, known often in foreign works under the name of Atomic Layer Deposition, are considered. ML method was created in the middle of the last century by Soviet-Russian scientists V. B. Aleskovskii and his student S. I. Koltsov. Among the first who after Russian scientists began to carry out research on the method of ML were scientific groups from Finland (T. Suntola, S. Hauk, M. Leskela, M. Rital, etc.), the GDR (V. Hanke, G. Olman, B. Horvath and others), Bulgaria (G. Bliznakov, K. Petrov, D. Mekhanjiev, D. Damianov and others). The structural-dimensional effects manifested in products obtained using the ML method are analyzed. The results of practical application of nanotechnology on the principles of the ML method in various high-tech industries are presented: sensor sensors, membrane catalytic processes, catalysts, sorbents, composite materials, alternative energy sources, electret materials etc.

Results of researches are showed, that fabrication technology of sensor elements are used in devices based on surface plasmon resonance significantly affects on the increasing uptime of measuring and substantially increases the sensitivity to low concentrations of analytes. The results of investigations have shown that deposition of plasmonexciting metal layer on glass substrate at the chosen angle enables to enhance sensitivity of the surface plasmon resonance sensor by 1.5 times for liquid media and 2 times for gas-like media as compared with standard gold chips as well as improve uniformity of deposition and durability of ligand binding to the sensitive layer. Diagnostic facilities based on surface plasmon resonance possess a high sensitivity to low concentrations of studied substances, which enables one to use them as precise analytical devices in lab investigations in industry, agriculture, medicine, and ecology.

A comprehensive study of the structure and electrical properties of nanopowder system based ZrO₂ + Y₂O₃ 3mol% was conducted. The presence of electrically continuous ion atmosphere, which consist from hydrogen-containing functional groups with different spin-spin relaxation times of hydrogen nuclei 1H was revealed. An original method of investigation of electrical properties of nanoparticles and surrounding ionic atmosphere based on electrochemical impedance spectroscopy was suggested.

In this paper, a novel patent-pending approach based on optical detection will be described. Various functionalized nanofiber materials have been used to demonstrate feasibility of realization of miniature sensors of biomedical and chemical values (enzymes reactions, metal ions content, etc.). Compactness and sensitivity of the sensors are significantly enhanced through original hybrid fiber-optic/nanofiber design. The potential of the new detection principle for security applications (forensic, seal intrusion, etc.) will be discussed.