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dc.contributor.authorShi, Yu Zhien
dc.contributor.authorXiong, Shaen
dc.contributor.authorChin, Lip Keten
dc.contributor.authorZhang, Jing Boen
dc.contributor.authorSer, Weeen
dc.contributor.authorWu, Jiu Huien
dc.contributor.authorChen, Tian Ningen
dc.contributor.authorYang, Zhen Chuanen
dc.contributor.authorHao, Yi Longen
dc.contributor.authorLiu, Ai Qunen
dc.identifier.citationShi, Y. Z., Xiong, S., Chin, L. K., Zhang, J. B., Ser, W., Wu, J. H., . . . Liu, A. Q. (2017). Determination of size and refractive index of single gold nanoparticles using an optofluidic chip. AIP Advances, 7(9), 095024-. doi:10.1063/1.5004727en
dc.description.abstractWe report a real-time method to determine the size, i.e. diameter, and refractive index of single gold nanoparticles using an optofluidic chip, which consists of a quasi-Bessel beam optical chromatography. The tightly focused (∼ 0.5 μm) quasi-Bessel beam with low divergence (NA ∼ 0.04) was used to trap sub-100 nm gold nanoparticles within a long trapping distance of 140 μm. In the experiment, 60 to 100 nm gold nanoparticles were separated efficiently with at least 18 μm. The diameter and refractive index (real and imaginary) of single gold nanoparticles were measured at high resolutions with respect to the trapping distance, i.e. 0.36 nm/μm, 0.003/μm and 0.0016/μm, respectively.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.format.extent8 p.en
dc.relation.ispartofseriesAIP Advancesen
dc.rights© 2017 The Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (
dc.subjectDRNTU::Engineering::Electrical and electronic engineeringen
dc.titleDetermination of size and refractive index of single gold nanoparticles using an optofluidic chipen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen
dc.description.versionPublished versionen
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