Characterization of biological micro/nano interfacial structures for friction reduction and friction increase

2022 ◽  
pp. 55-86
Author(s):  
Deyuan Zhang ◽  
Huawei Chen ◽  
Yonggang Jiang ◽  
Jun Cai ◽  
Lin Feng ◽  
...  
Keyword(s):  
Friction Reduction ◽  
Interfacial Structures

Thermo-Wetting and Friction Reduction Characterization of Microtextured Superhydrophobic Surfaces

2012 ◽  
Vol 134 (11) ◽  
Author(s):  
Tae Jin Kim ◽  
Ravitej Kanapuram ◽  
Arnav Chhabra ◽  
Carlos Hidrovo
Keyword(s):  
Thermal Effects ◽  
Elevated Pressure ◽  
Friction Reduction ◽  
Superhydrophobic Surfaces ◽  
Microfluidic Channels ◽  
Pressure Drops ◽  
Cassie State ◽  
Heated Fluid ◽  
Gas Layer

Microtextured superhydrophobic surfaces have shown potential in friction reduction applications and could be poised to make a significant impact in thermal management applications. The purpose of this paper is to account for the thermal effects of the heated fluid flowing in superhydrophobic microfluidic channels. Through microscopic observation and flow rate measurements it was observed that (1) heating may prolong the Cassie state even under elevated pressure drops by increasing the temperature in the gas layer and that (2) excessive heating may pinch the microchannel flow due to the air layer invading into the liquid layer.

Characterization of Interfacial Structure in Large Lattice Mismatch Heteroepitaxy: Ag/Si (111)

1990 ◽  
Vol 209 ◽  
Author(s):  
D.C. McKenna ◽  
G.-C. Wang ◽  
K. Rajan
Keyword(s):  
Lattice Mismatch ◽  
Interfacial Structure ◽  
Epitaxial Relationship ◽  
Cross Sectional ◽  
Transmission Electron ◽  
Interfacial Structures ◽  
Large Lattice ◽  
Large Lattice Mismatch ◽  
Diffraction Patterns

ABSTRACTThe interfacial structure of a large lattice mismatched (˜25%) (111) Ag-Si system was studied by using transmission electron diffraction (SADP - Selected Area Diffraction Pattern). The epitaxial films of Ag (600–1200Å) were grown by MBE on flat Si(111) and misoriented Si(1ll) surfaces. We have examined the interfacial structures of the Ag on 2° misoriented Si(111) using diffraction patterns of cross sectional view. Through a detail analysis of thelocation and shape of the diffraction spots, we can determine the epitaxial relationship between Ag and Si, the small tilt angle of Ag(111) planes withrespect to the misoriented Si(111), the period of the finite terrace size of the misoriented Si substrate, and the size of the ordered region in the Ag film. The O-lattice analysis developed by Bollmann has beenapplied to this interface andthe result is compared with the SADP observation.

Correlated Friction Reduction and Viscoelastic Characterization of Utilizing the Permian Produced Water with HVFRs during Hydraulic Fracturing

2019 ◽  
Author(s):  
Mohammed Ba Geri ◽  
Ralph Flori ◽  
Abdulaziz Ellafi ◽  
Jerry Noles ◽  
Jacob Essman ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Produced Water ◽  
Friction Reduction

Characterization of CNT–pyrolytic C-layer-coated Al foil: interfacial structures, reactions, and performances

2017 ◽  
Vol 123 (11) ◽  
Author(s):  
Zuqiong Huang ◽  
Jian Li ◽  
Jianjun Yao ◽  
Hongming Zhou ◽  
Yuming Huang ◽  
...  
Keyword(s):  
Interfacial Structures

Characterization of polymer/epoxy buried interfaces with silane adhesion promoters before and after hygrothermal aging for the elucidation of molecular level details relevant to adhesion

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105622-105631 ◽  
Author(s):  
Nathan W. Ulrich ◽  
John N. Myers ◽  
Zhan Chen
Keyword(s):  
Interfacial Adhesion ◽  
Molecular Level ◽  
Adhesion Properties ◽  
Hygrothermal Aging ◽  
Adhesion Promoters ◽  
Buried Interfaces ◽  
Interfacial Structures ◽  
Before And After ◽  
Microelectronics Industry

Buried interfacial structures containing epoxy underfills are incredibly important in the microelectronics industry and their structures determine the interfacial adhesion properties and ultimately their lifetime.

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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