Carbon-based micro-ball and micro-crystal deposition using filamentary pulsed atmospheric pressure plasma
Carbon-based micro-ball and micro-crystal deposition using filamentary pulsed atmospheric pressure plasma
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使用丝状脉冲大气压等离子体进行碳基微球和微晶沉积
DOI：
10.1088/0022-3727/47/31/315203
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
P. Awakowicz
中科院分区：
文献类型：
--
作者：
R. Pothiraja;N. Bibinov;P. Awakowicz
薄等离子体细丝是由电离波从一个钉驱动电极在石英管中的氩气/甲烷气体混合物（2400 sccm/2 sccm）在大气压下的传播。在我们的实验中，通过应用各种合适的基板配置和接地电极的几何形状来控制灯丝在基板表面上的接触点的位置。接触点处的气体条件从氩气到环境空气变化。基于显微摄影和放电电流波形，灯丝接触基板的持续时间估计为约1微秒。在此期间，碳基材料沉积在基板表面上的接触点处。如果灯丝接触点通过氩气流从环境空气中保存下来，则会产生微球。在空气混合下，形成微晶体。两种材料的尺寸约为1微米（0.5-2 µm），相当于约10 10-10 12个碳原子。中性物质的扩散和离子的漂移都不是在短时间内形成如此大的微材料的原因。有可能的是，带电的碳基材料在等离子体通道中形成并被输送到基板的表面。在我们的实验中，在不同的气体条件下形成的微材料的这种传输和表征的机制，将在未来进行研究。
Thin plasma filaments are produced by the propagation of ionization waves from a spiked driven electrode in a quartz tube in an argon/methane gas mixture (2400 sccm/2 sccm) at atmospheric pressure. The position of the touch point of filaments on the substrate surface is controlled in our experiment by applying various suitable substrate configurations and geometries of the grounded electrode. The gas conditions at the touch point are varied from argon to ambient air. Based on microphotography and discharge current waveforms, the duration of the filament touching the substrate is estimated to be about one microsecond. Carbon-based materials are deposited during this time at the touch points on the substrate surface. Micro-balls are produced if the filament touch points are saved from ambient air by the argon flow. Under an air admixture, micro-crystals are formed. The dimension of both materials is approximately one micrometre (0.5–2 µm) and corresponds to about 10 10–10 12 carbon atoms. Neither the diffusion of neutral species nor drift of ions can be reason for the formation of such a big micro-material during this short period of filament–substrate interaction. It is possible that charged carbon-based materials are formed in the plasma channel and transported to the surface of the substrate. The mechanism of this transport and characterization of micro-materials, which are formed under different gas conditions in our experiment, will be studied in the future.
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DOI：
10.1088/0022-3727/46/46/464009
发表时间：
2013-11
期刊：
Journal of Physics D: Applied Physics
影响因子：
--
作者：
S. Schröter;Ramasamy Pothiraja;P. Awakowicz;N. Bibinov;M. Böke;B. Niermann;J. Winter
通讯作者：
S. Schröter;Ramasamy Pothiraja;P. Awakowicz;N. Bibinov;M. Böke;B. Niermann;J. Winter
60个碳原子簇已被揭示
DOI：
--
发表时间：
1987
期刊：
影响因子：
--
作者：
S. Iijima
通讯作者：
S. Iijima
利用大气压脉冲丝状等离子体源在管内表面沉积非晶碳膜
DOI：
10.1088/0022-3727/44/35/355206
发表时间：
2011
期刊：
Journal of Physics D: Applied Physics
影响因子：
--
作者：
R. Pothiraja;N. Bibinov;P. Awakowicz
通讯作者：
P. Awakowicz
高分子复合材料球状闪电
DOI：
--
发表时间：
2002
期刊：
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子：
--
作者：
V. L. Bychkov
通讯作者：
V. L. Bychkov