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The bionic structure is more environmentally friendly.
The design of natural structures also cannot be compared with human attempts to construct anything that claims to be natural.
For this it is necessary to have a wealth of knowledge in many areas: physics and chemistry, astronomy and biology, geography and ecology, mathematics and technologies, medicine and space.
Electropolymerisation of substituted anilines. // Journal of Electroanalytical Chemistry. – 2014. – V. 371. – P. 259-265
Theory of structures. - М.: LKI Publishing House, 2018. 320 p

Corrosion has been identified as a primary cause of failure in numerous structures and installations, posing a significant challenge in the fields of metallurgy, engineering, and industry.
By then, a Gel-like silica was precipitated out and left for six [6] hours to improve yield and structure of the silica formed.
Industrial Engineering Chemistry Research. 53(20), pp 8436 – 8444
The Use of Rubber leaf Extract as a Corrosion Inhibitor for Mild Steel in Acidic Solution, International Journal of Materials and Chemistry 7(1) PP 5-13, 2017
Materials Chemistry and Physics 313, 128752,2024

Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya st., Ivanovo 153000, Russian Federation aershovsv.iv@yandex.ru, benkalini@gmail.com, ckuznetsovtex@gmail.com, dksa@isc-ras.ru, eabaranov_52@mail.ru Keywords: composite, binder, reinforcing, capillary-porous structure, infusion.
Textile is a porous medium and, therefore, has a certain number of cavities or empty spaces of various diameters in its structure, which affect the value of the filtration coefficient.
In this case, the structure of the transition matrix is preserved.
Kalinin, The use of mechanical vibrations as a factor in the intensification of mass transfer processes in the technology of processing capillary-porous structures.
Samokhina, Methods for the study of porous structures – access mode. https://naukovedenie.ru/PDF/34TVN415.pdf/ [7]  S.A.

In this study, CuNPs were synthesized by green chemistry, namely the more effective microwave method, high energy efficiency, and fast [1, 11].
XRD patterns of NMP, NMP/Chi, and NMP/Chi/CuNP(20) The crystal structure of the NMP, NMP/Chi, and NMP/Chi/CuNP(20) materials were obtained from the XRD patterns, as shown in Fig. 6.
It indicates that the presence of other components in NMP does not change the crystal structure of NMP.
Summary Copper nanoparticles were synthesized at various concentrations using green chemistry. 
Lee, Fe3O4 nanoparticles: structures, synthesis, magnetic properties, surface functionalization, and emerging applications, Appl.

The steady structure and binding energy can be determined.
In recent years, the rapid development of theory and numerical algorithms makes the first-principles approach based on Density Functional Theory conventional computing research methods in condensed matter physics, quantum chemistry and material science.
At present, although the study of Si(100) surface is more, there is no consensus view of the concrete structure of its reconstruction surface.
It is inferred in accordance with structure theory that each Si in sp3 hybrid orbitals forms tetrahedral spatial structure in conjunction with the other four Si atoms, Si-Si bond length d=2.352Å, Si-Si-Si bond angle 109.471º.When the crystal is cut along a certain direction to obtain different surfaces, the surface atomic structure of crystals is significantly different from the internal atomic structure, the reason is that each atom in a solid contributes the same number of electrons and forms chemical bonds with the other atoms around, thus to combine atoms together in a solid.
However, the atoms on the surface of the solid have extra unpaired valence electrons to form dangling bonds because chemical bonds of one side’s atoms are cut off, leading to the difference between the surface structure and the internal structure of crystals.

Competitive Growth of ZnO and ZnS Micro-Nano Structures Weiwei He1,a, Jun Sang2,b, Yang Li1, Hongxiao Zhao1, Huimin Jia1,c 1 Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang 461000 2 College o f Chemistry and Chemical Engineering, Xuchang University, Xuchang 461000 a heww1982@163.com, b1026334162@qq.com, c huimin0429@yahoo.com.cn Keywords: zinc sulfide, zinc oxide, hydrothermal method, competitive growth.
In this study, we prepared the micro/nano structures of ZnS microspheres, ZnO microrods and other more complex structures by a simpe hydrothermal method.
The higher temperature is benefited for the formation of ZnS structures.
The typical XRD pattern demonstrates the well crystalline structures of ZnO (Fig.2a).
However, from XRD patterns as shown in Fig. 4, it can be seen clearly the structure evolution from ZnO structures to ZnS structures with increasing reaction temperatures.

Because of the special geological structure, folds are the main place where underground water gathers and moves.
Anyway, in any tunnel, an important problem to be considered is the stability of surrounding country rocks which is related to different factors such as the rock property, structure of rocks, underground water, natural stress state, geological structure, digging method of the tunnel, supporting method and supporting time [1], etc.
Analysis of underground water in anticlines Due to the movement of geological structures, strata, under the stresses with different strength and various directions, bend and form the folds.
When the water in rocks is in dynamic movement, there will be three effects on rocks, those are mechanics, physics and chemistry [13].
Decreasing strength of rocks is the joint result of physics, chemistry and mechanics.

Pisarski2,b, Joanna Pisarska2,c 1University of Silesia, Faculty of Computerand Materials Science, Department of Materials Science, Sosnowiec, Poland 2University of Silesia, Faculty of Mathematics, Physics and Chemistry, Institute of Chemistry, Katowice, Poland amalgorzata.plonska@us.edu.pl, bwojciech.pisarski@us.edu.pl, cjoanna.pisarska@us.edu.pl Keywords: sol-gel ceramics, PLZT, ytterbium, luminescence properties Abstract.
Our investigations give a detailed account of the relationships between concentrations of trivalent ytterbium ions in PLZT matrix, on their structure, microstructure, as well as luminescence properties.
Goal of this study was to investigate how co-doping influence on the structure, microstructure and optical properties of PLZT:Yb3+ ceramics.
For the diffraction pattern fitting a structure model from ICDD data base was used (from the PDF standards, N° 00-029-0775; 00-029-0776; 00-046-0336).
All obtained samples exhibited the rhombohedral structure R3c, and other phases were not observed.

Synthesis and Structure Properties of Free-Standing TiO2 Nanotube Arrays Juan Chen1,a, Chen-guang Yang1, Hong-wang Zhang2, Hao Zeng*2 and Shu-li He*1,b 1Department of Physics, Capital Normal University, Beijing 100048, China 2Department of Physics, University at Buffalo, SUNY, New York 14260, USA achenjuan_sara@yahoo.com.cn, bhsl-phy@163.com Keywords: Anodic oxidation, TiO2 nanotube arrays, Crystal structure Abstract.
The morphology and structure of the TiO2 nanotube arrays were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD).
The crystal structure of the TNT arrays can be changed by heating process to promote the optical and electrical properties [16, 17].
The crystalline structure of the FSTNT were characterized by a X-ray diffraction system (Bruker D8-Advance, Cu Kα).
Arakawa: Coordination Chemistry Review, Vol. 248 (2004), p.1381

Krasińskiego 8, Poland 2 Institute of Physics and Chemistry of Metals, University of Silesia, Bankowa 12, Katowice, Poland a tomasz.rzychon@polsl.pl, bandrzej.kielbus@polsl.pl, cgrzegorz.dercz@us.edu.pl Keywords: Magnesium alloys, Mg-Al-Sr alloys, Microstructure, The Rietveld method Abstract.
This phase was tentatively named Al3Mg13Sr and its crystal structure is not yet clearly determined.
Paper presents the results of Rietveld fitting for AJ63 magnesium alloy and model of the crystal structure for Al3Mg13Sr compound.
The Mg-rich phase is reported to have an approximate composition of Al3Mg13Sr with an unknown crystal structure [1-4].
Nevertheless, the XRD investigation does not confirm the presence of Mg17Sr2 in the structure of Mg-Al-Sr alloys [1].