Comparative Study of Influence of Simultaneous Modulation of Upper-Coil and Lower-Coil Currents on Silicon Nanoparticles Synthesized Using Tandem-Type Modulated Induction Thermal Plasmas
Comparative Study of Influence of Simultaneous Modulation of Upper-Coil and Lower-Coil Currents on Silicon Nanoparticles Synthesized Using Tandem-Type Modulated Induction Thermal Plasmas
复制标题
DOI：
10.1007/s11090-022-10230-w
复制
发表时间：
2022-02-04
影响因子：
3.6
通讯作者：
Nakamura，K.
中科院分区：
文献类型：
--
作者：
Furukawa，Ryudai;Tanaka，Yasunori;Nakamura，K.
采用实验和数值模拟方法研究了串联型调制感应热等离子体（Tandem-MITP）上线圈和下线圈电流调制对硅纳米颗粒合成的影响。调制条件被设置为无调制、仅下线圈电流调制和同时上线圈和下线圈电流调制的三个条件。实验获得的结果表明，同时调制的上部线圈和较低的电流提供了较小的纳米粒子与较低的标准偏差的颗粒尺寸。这一结果表明，两个线圈电流的大调制可以提供调制感应热等离子体中的温度场的更快速的淬火。所开发的数值模型还预测了提供更小的纳米粒子的高淬火，因为强夹带气流的同时调制的上部线圈和下部线圈电流。在辐射强度分布和颗粒尺寸分布的时间变化方面，数值结果和实验结果之间进行了比较，表明它们之间的公平协议。从这些实验获得的和数值计算的结果，同时调制的上部线圈和下部线圈的电流被发现是优选的纳米粒子合成。
The influences of upper-coil and lower-coil current modulation of tandem-type modulated induction thermal plasma (tandem-MITP) were studied for silicon nanoparticle synthesis using both experimental and numerical approaches. The modulation condition was set to three conditions of non-modulation, lower-coil current modulation only, and simultaneous upper-coil and lower-coil current modulation. The experimentally obtained results indicate that simultaneous modulation of the upper-coil and lower currents provides smaller nanoparticles with a lower standard deviation of particle size. This result suggests that large modulation of two coil currents can offer more rapid quenching of the temperature field in modulated induction thermal plasma. The developed numerical model also predicted provision of smaller nanoparticles by high quenching because of strong entrainment gas flow by the simultaneous modulation of upper-coil and lower coil currents. Comparison was made between the numerical result and experimentally obtained results in terms of time variation in the radiation intensity distribution, and particle size distribution, indicating fair agreement between them. From these experimentally obtained and numerical results, simultaneous modulation of the upper-coil and lower-coil currents was found to be preferable for nanoparticle synthesis.