Determination of size and refractive index of single gold nanoparticles using an optofluidic chip

Y. Z. Shi; S. Xiong; L. K. Chin; J. B. Zhang; W. Ser; J. H. Wu; T. N. Chen; Z. C. Yang; Y. L. Hao; A. Q. Liu

doi:10.1063/1.5004727

Determination of size and refractive index of single gold nanoparticles using an optofluidic chip

Y. Z. Shi
, S. Xiong
, L. K. Chin
, J. B. Zhang
, W. Ser
, J. H. Wu
, T. N. Chen
, Z. C. Yang
, Y. L. Hao
, A. Q. Liu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

5 Citations (Scopus)

40 Downloads (CityUHK Scholars)

Abstract

We 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.

Original language	English
Article number	095024
Journal	AIP Advances
Volume	7
Issue number	9
DOIs	https://doi.org/10.1063/1.5004727
Publication status	Published - 1 Sept 2017
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Determination of size and refractive index of single gold nanoparticles using an optofluidic chip",

abstract = "We 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.",

author = "Shi, \{Y. Z.\} and S. Xiong and Chin, \{L. K.\} and Zhang, \{J. B.\} and W. Ser and Wu, \{J. H.\} and Chen, \{T. N.\} and Yang, \{Z. C.\} and Hao, \{Y. L.\} and Liu, \{A. Q.\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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TY - JOUR

T1 - Determination of size and refractive index of single gold nanoparticles using an optofluidic chip

AU - Shi, Y. Z.

AU - Xiong, S.

AU - Chin, L. K.

AU - Zhang, J. B.

AU - Ser, W.

AU - Wu, J. H.

AU - Chen, T. N.

AU - Yang, Z. C.

AU - Hao, Y. L.

AU - Liu, A. Q.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2017/9/1

Y1 - 2017/9/1

N2 - We 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.

AB - We 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.

UR - https://www.scopus.com/pages/publications/85030549049

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85030549049&origin=recordpage

U2 - 10.1063/1.5004727

DO - 10.1063/1.5004727

M3 - RGC 21 - Publication in refereed journal

SN - 2158-3226

VL - 7

JO - AIP Advances

JF - AIP Advances

IS - 9

M1 - 095024

ER -

Determination of size and refractive index of single gold nanoparticles using an optofluidic chip

Abstract

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