Papers by Keyword: Microrelief

Abstract: Experimental titanium implants with a rough calcium phosphate (CР) coating with bio-inspired properties have been developed. The role of roughness (in the range Ra = 2.4 - 4.6 μm) of the surface CP simulating the physicochemical features of the mineral substance of regenerating bone tissue to change the growth and morphofunctional activity of mesenchymal stem cells (MSCs) was evaluated. Titanium substrates with a microrelief CP coating bearing artificial niches for stem cells was shown in vitro to have an epigenomic effect on MSCs, that contributes to their differentiation and maturation in bone cells. The results show the promise of developing and introducing a new class of medical devices with bio-inspired surfaces into clinical practice for traumatology and orthopedics.

Abstract: Proposed a method for measuring parameters of micro-surface machine parts optoelectronic and computer facilities, based on the computation of two-dimensional settings of the autocorrelation function, based on the binary image of the investigated microrelief using kvazioptimalnogo correlation algorithm. Found to be the most informative characterization of the studied surfaces, micro precision components reliably distinguished from each other with a given probability, is the average amplitude of the variable component of the autocorrelation function. Shows the results of determining the parameters of microrelief surface of runner blade GTM using quasi-optimal correlation algorithms.

Abstract: The article describes a new method for texture analysis of precision machined surfaces, which is based on the use of computer optics and an autocorrelation method for processing the obtained images of the textures of the studied microreliefs. The method is based on a probabilistic comparative assessment of the unknown texture of the studied microrelief with known textures of the reference microreliefs, for which the parameters of the microreliefs are predetermined according to the state standards of the Russian Federation.

Abstract: This report is devoted to the investigation of self-organized microrelief morphology control and optimization of the microrelief processing leading to obtain hotosensitivity of solar cells (SC) enhancement. The use of the heterostructures (HS) with the corrugated interface as active element allows one to increase SC photoresponse due to the front surface reflection reduction (optical losses). Surface barrier HS of Au/GaAs were used as model structures to reveal general relationship between the scattered light intensity and morphology peculiarities of HS interfaces.