Towards cooperative sequential composition control

2016 ◽  
Author(s):  
Esmaeil Najafi ◽  
Gabriel A.D. Lopes
Keyword(s):  
Composition Control ◽  
Sequential Composition

Rapid learning in sequential composition control

2014 ◽  
Author(s):  
Esmaeil Najafi ◽  
Gabriel A.D. Lopes ◽  
Subramanya P. Nageshrao ◽  
Robert Babuska
Keyword(s):  
Rapid Learning ◽  
Composition Control ◽  
Sequential Composition

scholarly journals Learning Sequential Composition Control

2016 ◽  
Vol 46 (11) ◽  
pp. 2559-2569 ◽  
Author(s):  
Esmaeil Najafi ◽  
Robert Babuska ◽  
Gabriel A. D. Lopes
Keyword(s):  
Composition Control ◽  
Sequential Composition

Efficient Perovskite Solar Cells Achieved using the 2-Methoxyethanol Additive: Morphology and Composition Control of Intermediate Film

2021 ◽  
Vol 4 (3) ◽  
pp. 2681-2689
Author(s):  
Liuxing Guo ◽  
Yi Chen ◽  
Ge Wang ◽  
Yiqiu Xia ◽  
Dongxu Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Composition Control

scholarly journals Elemental composition control of gold-titania nanocomposites by site-specific mineralization using artificial peptides and DNA

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Makoto Ozaki ◽  
Takahito Imai ◽  
Takaaki Tsuruoka ◽  
Shungo Sakashita ◽  
Kin-ya Tomizaki ◽  
...  
Keyword(s):  
Visible Light ◽  
Elemental Composition ◽  
Inorganic Compounds ◽  
Medical Science ◽  
Induction Effect ◽  
Site Specific ◽  
Composition Control ◽  
Light Excitation ◽  
Titania Photocatalyst ◽  
Scale Control

AbstractBiomineralization, the precipitation of various inorganic compounds in biological systems, can be regulated in terms of the size, morphology, and crystal structure of these compounds by biomolecules such as proteins and peptides. However, it is difficult to construct complex inorganic nanostructures because they precipitate randomly in solution. Here, we report that the elemental composition of inorganic nanocomposites can be controlled by site-specific mineralization by changing the number of two inorganic-precipitating peptides bound to DNA. With a focus on gold and titania, we constructed a gold-titania photocatalyst that responds to visible light excitation. Both microscale and macroscale observations revealed that the elemental composition of this gold-titania nanocomposite can be controlled in several ten nm by changing the DNA length and the number of peptide binding sites on the DNA. Furthermore, photocatalytic activity and cell death induction effect under visible light (>450 nm) irradiation of the manufactured gold-titania nanocomposite was higher than that of commercial gold-titania and titania. Thus, we have succeeded in forming titania precipitates on a DNA terminus and gold precipitates site-specifically on double-stranded DNA as intended. Such nanometer-scale control of biomineralization represent a powerful and efficient tool for use in nanotechnology, electronics, ecology, medical science, and biotechnology.

Substrate bias effects during R-F sputtering of Y-Ba-Cu-O films

1990 ◽  
Vol 5 (4) ◽  
pp. 677-679 ◽  
Author(s):  
A. J. Drehman ◽  
M. W. Dumais
Keyword(s):  
Thin Films ◽  
Strontium Titanate ◽  
Reactive Sputtering ◽  
Negative Bias ◽  
Superconducting Thin Films ◽  
Substrate Bias ◽  
Composition Control ◽  
Zero Resistance

Y-Ba-Cu-O films were made by R-F diode sputtering using a single oxide target. It was found that if a small negative bias is applied to the substrate, the etching associated with reactive sputtering is significantly reduced. This results in better composition control and uniformity, which are quite important for the formation of superconducting thin films. Films deposited on strontium titanate, when annealed in oxygen, become superconducting with zero resistance at 89 K.

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