Methods of non-destructive testing in studies of self-organization processes in protein films

Baranov, Maksim; Velichko, Elena; Aksenov, E. T.

doi:10.1088/1742-6596/917/6/062059

Cited by 6 publications

(7 citation statements)

References 5 publications

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“…For the freestanding all-peptide films the approximate expression (16) gives more than 99% of the exact free energy for film thicknesses a 1.5µm. In this case r…”

Section: Dielectric Permittivity and Free Energy Of A Freestandimentioning

confidence: 99%

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Fluctuation-induced free energy of thin peptide films

2019

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We apply the Lifshitz theory of dispersion forces to find a contribution to the free energy of peptide films which is caused by the zero-point and thermal fluctuations of the electromagnetic field.For this purpose, using available information about the imaginary parts of dielectric permittivity of peptides, the analytic representation for permittivity of typical peptide along the imaginary frequency axis is devised. Numerical computations of the fluctuation-induced free energy are performed at room temperature for the freestanding peptide films, containing different fractions of water, and for similar films deposited on dielectric (SiO 2 ) and (Au) substrates. It is shown that the free energy of a freestanding peptide film is negative and, thus, contributes to its stability.The magnitude of the free energy increases with increasing fraction of water and decreases with increasing thickness of a film. For peptide films deposited on a dielectric substrate the free energy is nonmonotonous. It is negative for thicker than 100 nm films, reaches the maximum value at some film thickness, but vanishes and changes its sign for thinner than 100 nm films. The fluctuation-induced free energy of peptide films deposited on metallic substrate is found to be positive which makes films less stable. In all three cases, simple analytic expressions for the free energy of sufficiently thick films are found. The obtained results may be useful to attain film stability in the next generation of organic microdevices with further shrinked dimensions.

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“…For the freestanding all-peptide films the approximate expression (16) gives more than 99% of the exact free energy for film thicknesses a 1.5µm. In this case r…”

Section: Dielectric Permittivity and Free Energy Of A Freestandimentioning

confidence: 99%

“…In this connection, extensive studies of protein, peptide and other organic films have been performed (see, for instance, Refs. [10][11][12][13][14][15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

Fluctuation-induced free energy of thin peptide films

2019

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“…An important role in this situation is played by fast reliable methods of express control of condensed matter that can give information on the presence of deviations in a medium from the standard state by in-situ measurements [1,2,10,[16][17][18]. This makes it possible to quickly identify such foci of pollution.…”

Section: Introductionmentioning

confidence: 99%

Environmental express monitoring of territory and water bodies at various stages of construction and improvement

et al. 2018

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The article substantiates the need for continuous monitoring of the state of the environment both in the territories of the object under construction and in the areas of improvement works. The method of nuclear-magnetic spectroscopy is proposed, which allows carrying out ecological express monitoring of the state of condensed media (for example, water, silt, various mixtures, etc.) in real time. The results of ecological express monitoring are presented and recommendations for its more effective application are given.

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“…This affects the quality and quantity of the crop during harvesting. There are great difficulties in controlling the quality of the products from such a crop, especially in the form of a liquid phase [8][9]. The decrease in yield leads to consequences.…”

Section: Introductionmentioning

confidence: 99%

Root rot grain crops on Cereals caused by the phytopathogenic fungi

et al. 2018

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Researching the special and infraspecial structure in causative agent populations of the most dangerous diseases root rots of cereals in various regions of the Russjan Federation has been carried out. The defeat of cereals root rots old in Russia causes in the a complex patogenic. More often meet Fusarium culmorum (W.G.Sm.) Sacc., F. oxysporum (Schlecht.) Snyd.et Hans., F. heterosporum Nees., F. sporotrichiella nom.nov. Bilai F. gibbosum App.et Wr.emend Bilai., F. avenaceum (Fr.) Sacc. and Bipolaris sorokiniana (Sacc.) Shoem., Alternaria spp.

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Methods of non-destructive testing in studies of self-organization processes in protein films

Abstract: Abstract.A non-destructive optical control of dynamics of protein aqueous solution drying under different conditions is considered. The processes of organization of different structures in protein films are discussed.

Cited by 6 publications

References 5 publications

Fluctuation-induced free energy of thin peptide films

Fluctuation-induced free energy of thin peptide films

Environmental express monitoring of territory and water bodies at various stages of construction and improvement

Root rot grain crops on Cereals caused by the phytopathogenic fungi

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