The Application of Spark Erosion to the Synthesis of Thin Films Containing Ultrafine Particles

1997 ◽  
pp. 339-343
Author(s):  
N. B. Shevchenko ◽  
J. A. Christodoulides ◽  
X. Meng-Burany ◽  
G. C. Hadjipanayis
Keyword(s):  
Thin Films ◽  
Ultrafine Particles ◽  
Spark Erosion

FORMATION AND PROPERTIES OF Ag ULTRAFINE PARTICLES EMBEDDED IN BARIUM OXIDE THIN FILMS

1996 ◽  
Vol 03 (01) ◽  
pp. 1077-1081 ◽  
Author(s):  
J.L. WU ◽  
X. ZHANG ◽  
W.M. LIU ◽  
Z.Q. XUE ◽  
Q.D. WU
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Ultrafine Particles ◽  
Response Curve ◽  
Barium Oxide ◽  
Vacuum System ◽  
Pulse Detection ◽  
Layer Method ◽  
Reactivation Process ◽  
Alkali Elements

A kind of photoemissive thin films, which does not contain alkali elements but contains metallic ultrafine particles, is studied. A typical kind is the thin film of silver ultrafine particles embedded in the barium oxide. There are two methods in the formation of Ag-O-Ba thin films: single-metallic layer method and multimetallic layer method. The photoelectric emission response curve to wavelengths between 350 and 800 nm is given. The energy band with respect to the position diagram in the neighborhood of its surface is also presented. This kind of photoemissive thin films can be exposed or stored in the atmosphere and can be used again in a vacuum system without reactivation process for laser-pulse detection.

Synthesis of ultrafine particles and thin films of BaFe12O19 by the spray-ICP technique

1994 ◽  
Vol 4 (5) ◽  
pp. 591-596 ◽  
Author(s):  
Y. Mizoguchi ◽  
M. Kagawa ◽  
M. Suzuki ◽  
Y. Syono ◽  
T. Hirai
Keyword(s):  
Thin Films ◽  
Ultrafine Particles

Study of ultrafine particles-organic polymer thin films

1993 ◽  
Vol 228 (1-2) ◽  
pp. 304-306
Author(s):  
Z.Q. Xue ◽  
W.M. Liu ◽  
Y.W. Liu ◽  
H.J. Gao ◽  
X.Y. Zhao ◽  
...  
Keyword(s):  
Thin Films ◽  
Ultrafine Particles ◽  
Polymer Thin Films ◽  
Organic Polymer

Preparation and characterization of cerium oxide ultrafine particles dispersed in polymer thin films

1997 ◽  
Vol 256 (1-2) ◽  
pp. 97-101 ◽  
Author(s):  
T. Masui ◽  
K. Machida ◽  
T. Sakata ◽  
H. Mori ◽  
G. Adachi
Keyword(s):  
Thin Films ◽  
Cerium Oxide ◽  
Ultrafine Particles ◽  
Polymer Thin Films

Growth of SiC by Reaction between Thin Films and Ultrafine Particles

1999 ◽  
Vol 38 (Part 1, No. 1A) ◽  
pp. 213-214 ◽  
Author(s):  
Chihiro Kaito ◽  
Seiji Kimura ◽  
Yuuki Ojima ◽  
Yasuyuki Hatayama ◽  
Daisuke Ban ◽  
...  
Keyword(s):  
Thin Films ◽  
Ultrafine Particles

Gas-phase synthesis of ultrafine particles and thin films of Y-Al-O by the spray-ICP technique

1993 ◽  
Vol 24 (3) ◽  
pp. 349-355 ◽  
Author(s):  
M Kagawa ◽  
M Suzuki ◽  
Y Mizoguchi ◽  
T Hirai ◽  
Y Syono
Keyword(s):  
Thin Films ◽  
Gas Phase ◽  
Ultrafine Particles ◽  
Phase Synthesis ◽  
Gas Phase Synthesis

Cooling Enhancements in Thin Films Supported by Flexible Complex Seals in the Presence of Ultrafine Suspensions

2003 ◽  
Vol 125 (5) ◽  
pp. 916-925 ◽  
Author(s):  
A.-R. A. Khaled ◽  
K. Vafai
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Thermal Expansion ◽  
Thermal Load ◽  
Ultrafine Particles ◽  
Coolant Fluid ◽  
Thermal Dispersion ◽  
Plate Temperature ◽  
Volumetric Thermal Expansion ◽  
Dispersion Effects

Flow and heat transfer inside thin films supported by flexible soft seals having voids of a stagnant fluid possessing a large coefficient of volumetric thermal expansion βT are studied in the presence of suspended ultrafine particles. The study is conducted under periodically varying thermal load conditions. The governing continuity, momentum and energy equations are non-dimensionalized and reduced to simpler forms. The deformation of the seal is related to the internal pressure and lower plate’s temperature based on the theory of linear elasticity and a linearized model for thermal expansion. It is found that enhancements in the cooling are achieved by an increase in the volumetric thermal expansion coefficient, thermal load, thermal dispersion effects, softness of the supporting seals and the thermal capacitance of the coolant fluid. Further, thermal dispersion effects are found to increase the stability of the thin film. The noise in the thermal load is found to affect the amplitude of the thin film thickness, Nusselt number and the lower plate temperature however it has a negligible effect on their mean values.

scholarly journals Digital Holographic Microscopy as Identifier of Ultrafine Particles Emitted during Fused Deposition Modelling

2021 ◽  
Vol 12 (1) ◽  
pp. 65
Author(s):  
Daniel Alberto García-Espinosa ◽  
Miguel León-Rodríguez ◽  
Pedro Yañez-Contreras ◽  
Israel Miguel-Andrés ◽  
José Alfredo Padilla-Medina ◽  
...  
Keyword(s):  
Thin Films ◽  
Additive Manufacturing ◽  
Ultrafine Particles ◽  
Alternative Methods ◽  
Digital Holographic Microscopy ◽  
Fused Deposition Modelling ◽  
Glass Substrates ◽  
Fused Deposition ◽  
Potential Sources ◽  
Holographic Microscopy

Additive manufacturing has acquired a global industrial panorama for being an alternative to redirect the industry towards sustainability. However, previous studies have indicated that fused deposition modelling (FDM) techniques are potential sources of particles that are harmful to health. For this reason, this work is focused on exploring the behaviour and distribution of FDM resultant nanoparticles from the most commonly used printable materials through alternative methods as digital holographic microscopy (DHM). In this paper, we present the feasibility of using DHM to determine the presence of nanoparticles in the FDM process. Experimental results validate this technology’s precision and provide extensive knowledge about the implications of the FDM on health. The measure of the thin films deposited in glass substrates was between a minimum of 9 nm to a maximum of 200 nm, in agreement with the previous studies.

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