Soot inception: Carbonaceous nanoparticle formation in flames

Structural, optical and electrical properties of Al+MoO3 and Au+MoO3 thin films prepared by simultaneous magnetron sputtering deposition were investigated. The influence of MoO3 sputtering power on the Al and Au nanoparticle formation and spatial distribution was explored. We demonstrated the formation of spatially arranged Au nanoparticles in the MoO3 matrix, while Al incorporates in the MoO3 matrix without nanoparticle formation. The dependence of the Au nanoparticle size and arrangement on the MoO3 sputtering power was established. The Al-based films show a decrease of overall absorption with an Al content increase, while the Au-based films have the opposite trend. The transport properties of the investigated films also are completely different. The resistivity of the Al-based films increases with the Al content, while it decreases with the Au content increase. The reason is a different transport mechanism that occurs in the films due to their different structural properties. The choice of the incorporated material (Al or Au) and its volume percentage in the MoO3 matrix enables the design of materials with desirable optical and electrical characteristics for a variety of applications.

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Biofuntional nanoparticle formation and folate-targeted antitumor effect of heparin-retinoic acid conjugates

Macromolecular Research ◽

10.1007/s13233-012-0073-7 ◽

2012 ◽

Vol 20 (5) ◽

pp. 520-527 ◽

Cited By ~ 2

Author(s):

In-hyeok Oh ◽

Kwang Jae Cho ◽

Thanh Huyen Tran ◽

Kang Moo Huh ◽

Yong-kyu Lee

Keyword(s):

Retinoic Acid ◽

Antitumor Effect ◽

Nanoparticle Formation

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Effect of External Charging on Nanoparticle Formation in a Flame

Materials ◽

10.3390/ma14112891 ◽

2021 ◽

Vol 14 (11) ◽

pp. 2891

Author(s):

Elena Fomenko ◽

Igor Altman ◽

Igor E. Agranovski

Keyword(s):

Negative Ions ◽

Formation Processes ◽

Particle Charge ◽

Mgo Nanoparticles ◽

Nanoparticle Formation ◽

Noticeable Change ◽

Nanoparticle Shape ◽

Positive Ions ◽

Direct Interpretation ◽

Shape Of Nanoparticles

This paper attempts to demonstrate the importance of the nanoparticle charge in the synthesis flame, for the mechanism of their evolution during formation processes. An investigation was made of MgO nanoparticles formed during combustion of magnesium particles. The cubic shape of nanoparticles in an unaffected flame allows for direct interpretation of results on the external flame charging, using a continuous unipolar emission of ions. It was found that the emission of negative ions applied to the flame strongly affects the nanoparticle shape, while the positive ions do not lead to any noticeable change. The demonstrated effect emphasizes the need to take into account all of the phenomena responsible for the particle charge when modeling the nanoparticle formation in flames.

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High-speed visualization of metal oxide precursor in multiphase AC arc during nanoparticle formation

Japanese Journal of Applied Physics ◽

10.35848/1347-4065/ab7e15 ◽

2020 ◽

Vol 59 (SH) ◽

pp. SHHC08 ◽

Cited By ~ 1

Author(s):

Manabu Tanaka ◽

Yuki Saito ◽

Hiroki Maruyama ◽

Takayuki Watanabe

Keyword(s):

Metal Oxide ◽

High Speed ◽

Nanoparticle Formation ◽

Oxide Precursor ◽

Ac Arc

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Intracellular Nanoparticle Formation and Hydroxychloroquine Release for Autophagy‐Inhibited Mild‐Temperature Photothermal Therapy for Tumors

Advanced Functional Materials ◽

10.1002/adfm.202102832 ◽

2021 ◽

pp. 2102832

Author(s):

Ge Gao ◽

Xianbao Sun ◽

Xiaoyang Liu ◽

Yao‐Wen Jiang ◽

Runqun Tang ◽

...

Keyword(s):

Photothermal Therapy ◽

Nanoparticle Formation ◽

Mild Temperature

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Effects of Accumulated Energy on Nanoparticle Formation in Pulsed-Laser Dewetting of AgCu Thin Films

Nanoscale Research Letters ◽

10.1186/s11671-021-03564-5 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

H. K. Lin ◽

C. W. Huang ◽

Y. H. Lin ◽

W. S. Chuang ◽

J. C. Huang

Keyword(s):

Pulsed Laser ◽

Blue Shift ◽

High Energy ◽

Low Energy ◽

Nanoparticle Formation ◽

Energy Accumulation ◽

Glass Substrates ◽

Peak Absorption ◽

Two Peaks ◽

Sputtering System

AbstractAg50Cu50 films were deposited on glass substrates by a sputtering system. Effects of accumulated energy on nanoparticle formation in pulse-laser dewetting of AgCu films were investigated. The results showed that the properties of the dewetted films were found to be dependent on the magnitude of the energy accumulated in the film. For a low energy accumulation, the two distinct nanoparticles had rice-shaped/Ag60Cu40 and hemispherical/Ag80Cu20. Moreover, the absorption spectra contained two peaks at 700 nm and 500 nm, respectively. By contrast, for a high energy accumulation, the nanoparticles had a consistent composition of Ag60Cu40, a mean diameter of 100 nm and a peak absorption wavelength of 550 nm. Overall, the results suggest that a higher Ag content of the induced nanoparticles causes a blue shift of the absorption spectrum, while a smaller particle size induces a red shift.

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