Fractals, morphogenesis and triply periodic minimal surfaces in sol–gel-derived thin films

Шилова, О. А.

doi:10.1007/s10971-020-05279-y

Cited by 11 publications

(7 citation statements)

References 33 publications

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“…S3 , those were 1.78, 2.18, 2.278 and 2.874 for K sol , AK sol , EK gel and EAK gel . We obtained mass fractal with 1 < D f < 3, which has been positively related to the compactness of the scatterer ( Shilova, 2020 ) and thus the free volume in the scatterer can be interpreted, i.e. , larger mass fractal indicates smaller volume of the micropore.…”

Section: Resultsmentioning

confidence: 96%

Aggregation of konjac glucomannan by ethanol under low-alkali treatment

Song

Wu²,

Li³

et al. 2022

Food Chemistry: X

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Section: Resultsmentioning

confidence: 96%

Aggregation of konjac glucomannan by ethanol under low-alkali treatment

Song

Wu²,

Li³

et al. 2022

Food Chemistry: X

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“…The coagulation rate and the size of cluster structures depend on the catalyst concentration. The dominant mechanism for the formation of spatial structures is selforganization [25,26]. Along with the self-organization of particles formed in the film-forming system during maturation, the equilibrium in chemical reactions (5) shifts towards the formation of Sn(OH) 4 and NH 4 Cl.…”

Section: Influence Of Chemical Parameters Of Film-forming Systems On ...mentioning

confidence: 99%

The Effect of pH Solution in the Sol–Gel Process on the Structure and Properties of Thin SnO2 Films

et al. 2022

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The synthesis of surface-active structures is important for creating many applications. The structural formation of SnO2 thin films in the range from 1.4 to 1.53 pH is studied in this work. This process occurs on the surface of the sample in the range of 1.4 to 1.49 and in the volume in the range of 1.51 to 1.53. SnO2 is formed after annealing at 400 ∘C, according to XRD. Doping NH4OH to solution stimulates particle coagulation and gel formation. All of these have an impact on the transparency of samples investigated by spectrophotometric methods. By increasing the pH, the resistance raises at room temperature. The Eg calculation along the fundamental absorption edge shows that it is greater than 3.6 eV’ for SnO2 films. According to the Burstein–Moss effect, a change of the bandgap is related to the increased concentration of the free charge carriers. Elemental analysis has shown that chlorine ions are considered to be additional sources of charge carriers. The value pH = 1.49 is critical since there is a drastic change in the structure of the samples, the decrease in transparency is replaced by its increase, and the energy of activation of impurity levels is changed.

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“…For all these types of applications, the peculiarities of the interaction between the “matrix” and the “guest” and the processes taking place at their interface are the keys for obtaining and predicting the new properties and synergistic effects in such materials. In this case, at different hierarchical levels of pores, different effects can emerge and, so, different levels of pores can provide different functions [ 1 , 2 , 32 , 33 , 34 , 35 , 36 , 37 ]. The formation of porous fractal multicomponent systems with topology close to the infinitely coupled triply periodic minimal surfaces was sintered by sol-gel method [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Low-Frequency Dielectric Relaxation in Structures Based on Macroporous Silicon with Meso-Macroporous Skin-Layer

et al. 2021

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The spectra of dielectric relaxation of macroporous silicon with a mesoporous skin layer in the frequency range 1–106 Hz during cooling (up to 293–173 K) and heating (293–333 K) are presented. Macroporous silicon (pore diameter ≈ 2.2–2.7 μm) with a meso-macroporous skin layer was obtained by the method of electrochemical anodic dissolution of monocrystalline silicon in a Unno-Imai cell. A mesoporous skin layer with a thickness of about 100–200 nm in the form of cone-shaped nanostructures with pore diameters near 13–25 nm and sizes of skeletal part about 35–40 nm by ion-electron microscopy was observed. The temperature dependence of the relaxation of the most probable relaxation time is characterized by two linear sections with different slope values; the change in the slope character is observed at T ≈ 250 K. The features of the distribution of relaxation times in meso-macroporous silicon at temperatures of 223, 273, and 293 K are revealed. The Havriliak-Negami approach was used for approximation of the relaxation curves ε″ = f(ν). The existence of a symmetric distribution of relaxers for all temperatures was found (Cole-Cole model). A discussion of results is provided, taking into account the structure of the studied object.

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Fractals, morphogenesis and triply periodic minimal surfaces in sol–gel-derived thin films

Cited by 11 publications

References 33 publications

Aggregation of konjac glucomannan by ethanol under low-alkali treatment

Aggregation of konjac glucomannan by ethanol under low-alkali treatment

The Effect of pH Solution in the Sol–Gel Process on the Structure and Properties of Thin SnO2 Films

Low-Frequency Dielectric Relaxation in Structures Based on Macroporous Silicon with Meso-Macroporous Skin-Layer

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