Understanding the strain-dependent structure of Cu nanocrystals in Ag–Cu nanoalloys

2021 ◽  
Author(s):  
Manoj Settem ◽  
Ajeet K. Srivastav ◽  
Anand K. Kanjarla
Keyword(s):  
Strain Effects ◽  
Strain Dependent ◽  
Compact Shape

Strain effects lead to transition of the Cu nanocrystal from a non-compact shape to a compact octahedron with increasing amount of Cu.

Modeling of Strain-Induced Phonon Thermal Conductivity Reduction in Thermoelectric Nanocomposites

2008 ◽  
Author(s):  
Yaoyao Xu ◽  
Gang Li
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Lattice Dynamics ◽  
Tensile Strain ◽  
Phonon Scattering ◽  
Mean Free Path ◽  
Nanocomposite Material ◽  
Phonon Thermal Conductivity ◽  
Strain Effects ◽  
Strain Dependent

In this paper, we study strain effects on the phonon thermal conductivity of 2-D Si/Ge nanocomposites. Lattice dynamics is employed for the calculation of the phonon scattering properties as a function of strain. Cauchy-Born rule is used to model the deformed configuration of the atoms. The effective thermal conductivity of the nanocomposite material is modeled by using a modified effective medium approximation (EMA) approach. The strain effects are incorporated into the modified EMA through the strain dependent phonon mean free path. The effective thermal conductivity of the strained nanocomposite material is calculated for different characteristic lengths of the Si component. The results show that a 2% tensile strain can reduce the effective thermal conductivity by more than 10%.

Mouse paternal-RNAs initiate pattern of metabolic disorders in a strain dependent manner

2016 ◽  
Author(s):  
Guzide Satir Basaran ◽  
Yagut Akbarova ◽  
Kezban Korkmaz ◽  
Kursad Unluhizarci ◽  
Francois Cuzin ◽  
...  
Keyword(s):  
Metabolic Disorders ◽  
Dependent Manner ◽  
Strain Dependent

Atomistic Simulation Study of Controlled Nanostructure Patterning

2003 ◽  
Vol 775 ◽  
Author(s):  
Byeongchan Lee ◽  
Kyeongjae Cho
Keyword(s):  
Diffusion Barrier ◽  
Atomistic Simulation ◽  
Degrees Of Freedom ◽  
Embedded Atom Method ◽  
Surface Kinetics ◽  
Bulk Properties ◽  
Embedded Atom ◽  
Kinetics Of ◽  
Dissociation Barrier ◽  
Strain Dependent

AbstractWe investigate the surface kinetics of Pt using the extended embedded-atom method, an extension of the embedded-atom method with additional degrees of freedom to include the nonbulk data from lower-coordinated systems as well as the bulk properties. The surface energies of the clean Pt (111) and Pt (100) surfaces are found to be 0.13 eV and 0.147 eV respectively, in excellent agreement with experiment. The Pt on Pt (111) adatom diffusion barrier is found to be 0.38 eV and predicted to be strongly strain-dependent, indicating that, in the compressive domain, adatoms are unstable and the diffusion barrier is lower; the nucleation occurs in the tensile domain. In addition, the dissociation barrier from the dimer configuration is found to be 0.82 eV. Therefore, we expect that atoms, once coalesced, are unlikely to dissociate into single adatoms. This essentially tells that by changing the applied strain, we can control the patterning of nanostructures on the metal surface.

Strain Effects on Oxygen Reduction Activity of Pr2NiO4 Caused by Gold Bulk Dispersion for Low Temperature Solid Oxide Fuel Cells

2019 ◽  
Vol 2 (2) ◽  
pp. 1210-1220 ◽  
Author(s):  
Sun Jae Kim ◽  
Taner Akbay ◽  
Junko Matsuda ◽  
Atsushi Takagaki ◽  
Tatsumi Ishihara
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Reduction ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Strain Effects ◽  
Reduction Activity

Increased MMP-9 levels with strain-dependent stress resilience and tunnel handling in mice

2021 ◽  
pp. 113288
Author(s):  
Kate Kennedy-Wood ◽  
Christi Anne S. Ng ◽  
Seham Alaiyed ◽  
Patricia L. Foley ◽  
Katherine Conant
Keyword(s):  
Stress Resilience ◽  
Strain Dependent

scholarly journals Nutrient Deficiency Promotes the Entry of Helicobacter pylori Cells into Candida Yeast Cells

Biology ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 426
Author(s):  
Kimberly Sánchez-Alonzo ◽  
Fabiola Silva-Mieres ◽  
Luciano Arellano-Arriagada ◽  
Cristian Parra-Sepúlveda ◽  
Humberto Bernasconi ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Nutrient Deficiency ◽  
Gastric Epithelium ◽  
Yeast Cells ◽  
Nutrient Concentrations ◽  
Fetal Bovine ◽  
H Pylori ◽  
Pcr Techniques ◽  
Strain Dependent

Helicobacter pylori, a Gram-negative bacterium, has as a natural niche the human gastric epithelium. This pathogen has been reported to enter into Candida yeast cells; however, factors triggering this endosymbiotic relationship remain unknown. The aim of this work was to evaluate in vitro if variations in nutrient concentration in the cultured medium trigger the internalization of H. pylori within Candida cells. We used H. pylori–Candida co-cultures in Brucella broth supplemented with 1%, 5% or 20% fetal bovine serum or in saline solution. Intra-yeast bacteria-like bodies (BLBs) were observed using optical microscopy, while intra-yeast BLBs were identified as H. pylori using FISH and PCR techniques. Intra-yeast H. pylori (BLBs) viability was confirmed using the LIVE/DEAD BacLight Bacterial Viability kit. Intra-yeast H. pylori was present in all combinations of bacteria–yeast strains co-cultured. However, the percentages of yeast cells harboring bacteria (Y-BLBs) varied according to nutrient concentrations and also were strain-dependent. In conclusion, reduced nutrients stresses H. pylori, promoting its entry into Candida cells. The starvation of both H. pylori and Candida strains reduced the percentages of Y-BLBs, suggesting that starving yeast cells may be less capable of harboring stressed H. pylori cells. Moreover, the endosymbiotic relationship between H. pylori and Candida is dependent on the strains co-cultured.

scholarly journals Atomic-layered MoS2 on SiO2 under high pressure: Bimodal adhesion and biaxial strain effects

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
R. S. Alencar ◽  
K. D. A. Saboia ◽  
D. Machon ◽  
G. Montagnac ◽  
V. Meunier ◽  
...  
Keyword(s):  
High Pressure ◽  
Biaxial Strain ◽  
Strain Effects ◽  
Layered Mos2
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