Three-dimensional structural control and analysis of hexagonal boron nitride nanosheets assembly in nanocomposite films induced by electric field concentration
Three-dimensional structural control and analysis of hexagonal boron nitride nanosheets assembly in nanocomposite films induced by electric field concentration
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DOI：
10.7567/jjap.53.02bd12
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发表时间：
2014-01
影响因子：
1.5
通讯作者：
Takeshi Fujihara;Hong-Baek Cho;M. Kanno;T. Nakayama;Tsuneo Suzuki;Weihua Jiang;H. Suematsu;K. Niihara
中科院分区：
文献类型：
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作者：
Takeshi Fujihara;Hong-Baek Cho;M. Kanno;T. Nakayama;Tsuneo Suzuki;Weihua Jiang;H. Suematsu;K. Niihara
在直流电场开关作用下，在聚合物基纳米复合薄膜中实现了氮化硼纳米片层的制备和可控局域化。在电场诱导过程中，采用表面具有微维突起的硅模电极对具有线性组装结构的BN纳米片进行局域化调制。利用X射线计算机层析成像技术对复合材料中已建立的氮化硼纳米片的组装进行了三维分析。通过施加开关直流电场，将BN纳米片(LABN)线性组装的结构变化从丝状结构调制为桥状结构，电场浓度的影响进一步增强了这种变化。局域化的LABN纳米复合薄膜在现代电子、光电子、光电子器件、半导体系统等局部热源的高效散热方面具有潜在的应用前景。
Fabrication and controlled localization of BN nanosheets assemblies were performed in polymer-based nanocomposite films under application of DC electric field switching. The localization of BN nanosheets with linearly assembled structure were modulated by applying a Si-mold electrode with micro-dimensional protrusions on the surface during electric field inducement. The established assembly of BN nanosheets, incorporated in the composite was analyzed three-dimensionally using X-ray computed tomography. The structural variation of linear assembles of BN nanosheets (LABNs) were modulated from filament-like to bridge-like structure by applying switching DC electric field whose effect was further intensified induced by electric field concentration. The nanocomposite films with localized LABNs can be potentially applied for efficient heat dissipation from local heat source, such as modern electronic, optoelectronic, photonic devices, and systems in semiconductor industry.