Rapid Quantification of Nanosphere Lithography Packing Defects Using Scanning Electron Microscopy Edge Effects
Rapid Quantification of Nanosphere Lithography Packing Defects Using Scanning Electron Microscopy Edge Effects
复制标题
使用扫描电子显微镜边缘效应快速量化纳米球光刻填充缺陷
DOI:
10.1002/pssr.202000328
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Warren, Roseanne
中科院分区:
文献类型:
--
作者:
Bekeris, Michael;Truong, Takara;Carron, Stephen;Karimi, Zahra;Feng, Haidong;Nze, Ugochukwu;Beeman, Michael;Sochol, Ryan D.;Warren, Roseanne
Nanosphere lithography (NSL) is a bottom‐up, self‐assembly approach that enables rapid, low‐cost patterning of nanoscale features. The practical application and scalability of NSL relies on the ability to achieve defect‐free nanosphere self‐assembly over large substrate areas. Self‐assembly methods for single‐layer nanosphere templates are typically evaluated using scanning electron microscopy (SEM) imaging, with literature reports focusing on maximum area of continuous nanosphere coverage. An alternative performance metric—namely, the percentage of nanospheres exhibiting perfect hexagonal close‐packing (%HCP)—is uniquely critical to NSL precision and repeatability. To enhance current methods of evaluating nanosphere self‐assembly, this work presents an SEM image analysis approach for rapidly quantifying packing defects in single‐layer nanospheres to determine %HCP. The method uses variations in SEM edge effect brightness to distinguish spheres with perfect packing from those in defect configurations or along edges. Comparison of image analysis program results with manual counting of nanospheres indicates that the program has a high degree of accuracy, with a mean error on the %HCP metric of +8.6% (absolute error). The results suggest that the present strategy offers a promising pathway to rapid evaluation of nanosphere self‐assembly for high‐precision NSL applications such as surface‐enhanced Raman scattering, photovoltaic cells, and nanogap electrodes.
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DOI:
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发表时间:
1974
期刊:
影响因子:
--
作者:
K. Kamisako;S. Akiyama;K. Shinohara
通讯作者:
K. Shinohara
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
M. K. Barbarez;D. K. Gupta;D. Hayward
通讯作者:
D. Hayward
影响因子:
3.9
作者:
Malaquin, Laurent;Kraus, Tobias;Wolf, Heiko
通讯作者:
Wolf, Heiko
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
A. Moniwa;T. Terasawa
通讯作者:
T. Terasawa