Impact of surface nanostructure and wettability on interfacial ice physics

ABSTRACTWe examined the influence of momentary annealing on the nanoscale surface morphology of NiO(111) epitaxial thin films deposited on atomically stepped sapphire (0001) substrates at room temperature in O2 at 1.3 × 10−3 and 1.3 × 10−6 Pa using a pulsed laser deposition (PLD) technique. The NiO films have atomically flat surfaces (RMS roughness: approximately 0.1–0.2 nm) reflecting the step-and-terrace structures of the substrates, regardless of the O2 deposition pressure. After rapid thermal annealing (RTA) of the NiO(111) epitaxial film deposited at 1.3 × 10−3 Pa O2, a periodic straight nanogroove array related to the atomic steps of the substrate was formed on the film surface for 60 s. In contrast, the fabrication of a transient state in the nanogroove array formation was achieved with RTA of less than 1 s. However, when the O2 atmosphere during PLD was 1.3 × 10−6 Pa, random crystal growth was observed and resulted in a disordered rough surface nanostructure after RTA.

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Contact Fatigue of 20KHN3A Steel with Surface Nanostructure

Materials Science ◽

10.1007/s11003-016-9909-1 ◽

2016 ◽

Vol 51 (6) ◽

pp. 833-838 ◽

Cited By ~ 2

Author(s):

V. I. Kyryliv ◽

B. P. Chaikovs’kyi ◽

O. V. Maksymiv ◽

A. V. Shal’ko

Keyword(s):

Contact Fatigue ◽

Surface Nanostructure ◽

20Khn3a Steel

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Diagnostics possibilities of erythrocytes analysis by the method of laser interference microscopy

Russian Clinical Laboratory Diagnostics ◽

10.18821/0869-2084-2021-66-1-22-25 ◽

2021 ◽

Vol 66 (1) ◽

pp. 22-25

Author(s):

A. V. Deryugina ◽

M. N. Ivashchenko ◽

P. S. Ignatyev ◽

A. A. Belov ◽

V. A. Petrov

Keyword(s):

Functional Activity ◽

Interference Microscopy ◽

Qualitative Assessment ◽

Critical Conditions ◽

Laser Interference ◽

Functional Capabilities ◽

Surface Nanostructure ◽

Laser Interference Microscopy ◽

Microscopy Method ◽

Altered Cell

The morphofunctional state of erythrocytes significantly changes by the onset and progression of various diseases, as well as in critical conditions, injuries, accompanied by severe tissue damage. This leads to a violation of microcirculation and has an effect on hemorheology in general. In connection with this, there is a need for the development of adequate methods for assessing the functional activity of erythrocytes. The aim of the work was to study the possibilities of laser interference microscopy in the analysis of the functional state of erythrocytes. The results allowed us to quantify the state of the phase height and phase diameter of erythrocytes. Analysis of the surface nanostructure gave a qualitative assessment of the functional activity of cells. The following patterns were revealed: the action of adrenaline causes the appearance of echinocytes with an increase in phase height and decrease phase diameter and the appearance of spicules on the surface of cells. The action of cortisol leads to a decrease in the phase height and the phase diameter with the appearance of numerous loosening of the structure of the cell surface. Moreover, the traditional method of analyzing the distribution of erythrocytes in a population by morphology (discocytes, stomatocytes, and degeneratively altered cell forms) did not reveal statistically significant differences. Thus, the results indicate that the interference microscopy method allows a qualitative assessment of the morphofunctional activity of native cells. This increases the information content of the analysis and leads to the objectification of data on the functional capabilities of erythrocytes.

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