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	Fabrication of a Three-Dimensional Plasmon Ruler Using an Atomic Force Microscope
	Lu, Jianing1; Liu, Shaoding3,4; Collins, Sean S. E.1; Tang, Linlong2; Wei, Xingzhan1,2; Mulvaney, Paul1
	2019-08-15
摘要	We have assembled a three-dimensional (3D) plasmon ruler using an atomic force microscope (AFM) tip to manipulate single gold nanocrystals on top of electron beam lithography fabricated base layers. The 3D structures exhibit several polarization-dependent surface plasmon scattering peaks, including symmetric-and asymmetric Fano resonances. We map these resonances as a function of the degree of asymmetry of the structure. We show that the coupled surface plasmon resonances are extremely sensitive to the position of the upper particle and that the resonances can be engineered and tuned using an AFM tip to move the upper nanocrystal just a few Angstroms.
DOI	10.1021/acs.jpcc.9b05360
发表期刊	JOURNAL OF PHYSICAL CHEMISTRY C
ISSN	1932-7447
卷号	123期号:32页码:19871-19878
收录类别	SCI
WOS记录号	WOS:000481568900069
语种	英语