scholarly journals Retraction of “Optimization of a Carbon Dioxide-Assisted Nanoparticle Deposition Process Using Sequential Experimental Design with Adaptive Design Space”

2020 ◽  
Vol 59 (35) ◽  
pp. 15807-15807
Author(s):  
Michael J. Casciato ◽  
Sungil Kim ◽  
J. C. Lu ◽  
Dennis W. Hess ◽  
Martha A. Grover
Keyword(s):  
Carbon Dioxide ◽  
Experimental Design ◽  
Adaptive Design ◽  
Design Space ◽  
Deposition Process ◽  
Nanoparticle Deposition

Optimized screen-printing and SEM-FIB characterization of YSZ thin films for Solid Oxide Fuel Cells and gas sensors devices

2004 ◽  
Vol 822 ◽  
Author(s):  
A. Morata ◽  
A. Tarancón ◽  
G. Dezanneau ◽  
F. Peiró ◽  
J. R. Morante
Keyword(s):  
Experimental Design ◽  
Screen Printing ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Deposition Process ◽  
Technological Parameters ◽  
Significant Information ◽  
Screen Printing Technique ◽  
Final Porosity

AbstractIn the present work, the screen printing technique has been used to deposit thick films of Zr0.84Y016O1.92 (8YSZ). In order to control the final porosity in view of a specific application (SOFCs or gas sensor), an experimental design based on analysis of variances (ANOVA) has been carried out. From this, we were able to determine the influence of several technological parameters on films porosity and grain size. The films obtained have been analysed with both Scanning Electron Microscopy (SEM) and Focused Ion Beam (FIB) combined with SEM. We show that only the combination of experimental design and advanced observation technique such as Focused Ion Beam allowed us to extract significant information for the improvement of the deposition process.

The Chemical Vapor Deposition of Dispersed Phase Composites in the B-Si-C-H-Cl-Ar System

1994 ◽  
Vol 363 ◽  
Author(s):  
T. S. Moss ◽  
W. J. Lackey ◽  
G. B. Freeman
Keyword(s):  
Experimental Design ◽  
Vapor Deposition ◽  
Multivariate Regression ◽  
Chemical Vapor ◽  
Deposition Process ◽  
Response Surfaces ◽  
Dispersed Phase ◽  
Designed Experiment ◽  
Cell Volumes ◽  
Central Composite

AbstractThe CVD of the coatings in the B-Si-C-H-C1-Ar system was accomplished using a statistically designed experiment. The experimental design used five factor half-fraction factorial with a central composite design that was both rotatable and orthogonal. Deposits were thick and dense and were composed of B13C2 and β-SiC with compositions ranging from 0 to 100%. Response surfaces were generated using multivariate regression for unit cell volumes of B13C2 and β-SiC, %B13C2/%SiC in the coating, and the Si to B ratio in the deposit. These equations could then be used to examine the significant variables in the reaction, as well as for tailoring and optimizing the deposition process.

scholarly journals Experimental study on nanoparticle deposition in straight pipe flow

2012 ◽  
Vol 16 (5) ◽  
pp. 1410-1413 ◽  
Author(s):  
Zhao-Qin Yin ◽  
Ming Lou
Keyword(s):  
Particle Deposition ◽  
Geometric Mean ◽  
Reynolds Numbers ◽  
Deposition Process ◽  
Straight Pipe ◽  
Nanoparticle Deposition ◽  
Number Distribution ◽  
Size Number ◽  
Mean Size ◽  
Particle Sizer

Loss of the number of nanoparticles within pipe may lead to significant change of particle number distribution, total mass concentration and particles mean size. The experiments of multiple dispersion aerosol particles ranging from 5.6 nm to 560 nm in straight pipe are carried out using a fast mobility particle sizer. The particle size number distribution, total number concentrations, geometric mean size and volume are acquired under different pipe lengths and Reynolds numbers. The results show lengthening the pipe and strengthening the turbulence can promote the particle deposition process. The penetration efficiency of smaller particle is lower than the larger one, so the particle mean size increases in the process of deposition.

Experiment of CHF Enhancement by Magnetite Nanoparticle Deposition in the Subcooled Flow Boiling Region

2017 ◽  
Author(s):  
Young Jae Choi ◽  
Dong Hoon Kam ◽  
Yong Hoon Jeong
Keyword(s):  
Mass Flux ◽  
Flow Boiling ◽  
Deposition Process ◽  
Working Fluid ◽  
Subcooled Flow Boiling ◽  
Nanoparticle Deposition ◽  
Magnetite Nanoparticle ◽  
Sem Image ◽  
Subcooled Flow ◽  
Static Contact

CHF experiments were conducted in subcooled flow boiling region at atmospheric pressure. Magnetite nanoparticles were deposited sufficiently on the test sections in same deposition process. Then, working fluid was changed to DI water. After the nanoparticle deposition process, the surface became very hydrophilic even after CHF experiment using DI water. The wettable surfaces were observed using static contact angle and SEM image. CHF results of bare stainless surface and nanoparticle-deposited surface were obtained in the subcooled boiling region. Experiments were conducted over a mass flux range from 1,000 kg/m2s to 5,000 kg/m2s and with inlet temperatures of 40, 60, and 80 °C. The CHF enhancement was from 0% to 40 % by the nanoparticle deposition, which is related wettability enhancement. The CHF enhancement increased as the mass flux increased, which lead to exit quality decrement.

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