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2021-06-18T13:36:34+09:00
2021-06-18T13:36:34+09:00
2021-06-18T13:36:34+09:00
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Ritsumeikan Univ.KO-316
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1 g
10 36 574.5 780 re
f
BT
0 g
/TT0 1 Tf
14.25 0 0 14.25 46.6921 788.25 Tm
(Production of functional and astromineralogical interested nanoparticles\
using the)Tj
14.986 -1.211 Td
(plasma field)Tj
/TT1 1 Tf
12 0 0 12 499.6797 742.5 Tm
(Takeshi Sato)Tj
-37.932 -2.313 Td
(Direct evidence of plasma field effects on nanoparticles have been perfo\
rmed at the gas pressure of the gas)Tj
-1 -1.5 Td
(evaporation method by using radio frequency of 13.56 MHz. By passing thr\
ough metallic or semi-metallic)Tj
0 -1.5 TD
(smoke into the plasma field at the nitrogen and helium mixture gas press\
ure of 10 Torr, it was found that the)Tj
T*
(particles changed into nitride particles in the gas mixture of nitrogen \
less than 1 Torr. The metallic and semi-)Tj
T*
(metallic particles before passing through the plasma field were the orde\
r of 50 nm in size. It can be elucidated)Tj
T*
(that the plasma field alters the structure of nanoparticles in an atmosp\
here of a little amount of the reactive)Tj
T*
(gas.)Tj
1 -2.5 Td
(In order to make clear the relation between the metamorphism and the pla\
sma field effect, the carbon soot)Tj
-1 -1.5 Td
(produced in methane gas was directly observed by in-situ high resolution\
transmission electron microscopy.)Tj
T*
(Amorphous carbon with onion-like structure produced in methane gas was c\
hanged to QCC structure with the)Tj
T*
(hole. Further upon heating, the QCC structure was changed to graphite sh\
eets. It can be concluded that the)Tj
T*
(existence of hydrogen incorporated in the carbon particles was attribute\
d to the structural change of carbon)Tj
T*
(particles.)Tj
1 -2.563 Td
(Carbon particles also were passed through plasma field under the various\
gas atmospheres. Large C)Tj
8.25 0 0 8.25 522.6895 457.5 Tm
(60)Tj
12 0 0 12 32.5 438 Tm
(particles were formed by passing through plasma field in helium gas. It \
was found that the coalescence)Tj
0 -1.562 TD
(growth among C)Tj
8.25 0 0 8.25 113.1602 420.75 Tm
(60)Tj
12 0 0 12 121.4102 419.25 Tm
( crystallites was accelerated in plasma field. By the aggregation among \
negatively charged)Tj
-7.409 -1.562 Td
(particles in plasma field, C)Tj
8.25 0 0 8.25 161.4648 402 Tm
(60)Tj
12 0 0 12 169.7148 400.5 Tm
( crystals were grown more than the size of 300 nm. In the methane gas)Tj
-11.435 -1.5 Td
(atmosphere, spherical onion and carbon nanotube were grown by passing ca\
rbon particle through the plasma)Tj
0 -1.5 TD
(field. By examining carbon particles grown at the electrodes, it was fou\
nd that the difference of the density of)Tj
T*
(electron charge in plasma was important factor for the selective growth \
of carbon particles.)Tj
1 -2.5 Td
(By introducing the flash evaporation technique, size and structure contr\
olled ZnO particles with)Tj
-1 -1.5 Td
(characteristic absorption can be obtained by passing through the plasma \
field. Furthermore, tungsten \(W\) was)Tj
T*
(doped ZnO particles, the position of W in ZnO structure was decided by c\
alculation of diffraction intensity of)Tj
T*
(W doped ZnO.)Tj
1 -2.563 Td
(Silicon oxide particles were produced by dropping Si\(C)Tj
8.25 0 0 8.25 312.1094 233.25 Tm
(2)Tj
12 0 0 12 316.2344 231.75 Tm
(H)Tj
8.25 0 0 8.25 324.9004 233.25 Tm
(5)Tj
12 0 0 12 329.0254 231.75 Tm
(O\))Tj
8.25 0 0 8.25 341.6875 233.25 Tm
(4)Tj
12 0 0 12 345.8125 231.75 Tm
( liquid into the plasma field. It was found)Tj
-26.109 -1.5 Td
(that the structure of silicon oxide particles could be controlled by the\
oxygen partial pressure in plasma.)Tj
ET
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