High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing

Daquan Yang; Shota Kita; Feng Liang; Cheng Wang; Huiping Tian; Yuefeng Ji; Marko Lončar; Qimin Quan

doi:10.1063/1.4867254

Author(s)

Daquan Yang
Shota Kita
Feng Liang
Huiping Tian
Yuefeng Ji
Marko Lončar
Qimin Quan

Detail(s)

Original language	English
Article number	063118
Journal / Publication	Applied Physics Letters
Volume	105
Issue number	6
Publication status	Published - 11 Aug 2014
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1063/1.4867254 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84921998364&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(57762936-b894-4ca9-a8d9-f68f41df3a63).html

Abstract

We experimentally demonstrate a label-free sensor based on nanoslotted parallel quadrabeam photonic crystal cavity (NPQC). The NPQC possesses both high sensitivity and high Q-factor. We achieved sensitivity (S) of 451 nm/refractive index unit and Q-factor >7000 in water at telecom wavelength range, featuring a sensor figure of merit >2000, an order of magnitude improvement over the previous photonic crystal sensors. In addition, we measured the streptavidin-biotin binding affinity and detected 10 ag/mL concentrated streptavidin in the phosphate buffered saline solution.

Citation Format(s)

[ RIS ] [ BibTeX ]

High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing. / Yang, Daquan; Kita, Shota; Liang, Feng et al.
In: Applied Physics Letters, Vol. 105, No. 6, 063118, 11.08.2014.

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

Yang, D, Kita, S, Liang, F, Wang, C, Tian, H, Ji, Y, Lončar, M & Quan, Q 2014, 'High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing', Applied Physics Letters, vol. 105, no. 6, 063118. https://doi.org/10.1063/1.4867254

Yang, D., Kita, S., Liang, F., Wang, C., Tian, H., Ji, Y., Lončar, M., & Quan, Q. (2014). High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing. Applied Physics Letters, 105(6), Article 063118. https://doi.org/10.1063/1.4867254

Yang D, Kita S, Liang F, Wang C, Tian H, Ji Y et al. High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing. Applied Physics Letters. 2014 Aug 11;105(6):063118. doi: 10.1063/1.4867254

Yang, Daquan ; Kita, Shota ; Liang, Feng et al. / High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing. In: Applied Physics Letters. 2014 ; Vol. 105, No. 6.