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

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.

Authors:
 [1];  [2];  [3]; ; ;  [4]; ;  [1]; ;  [5]
  1. Rowland Institute at Harvard University, Cambridge, Massachusetts 02142 (United States)
  2. (China)
  3. (United States)
  4. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
  5. State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876 (China)
Publication Date:
OSTI Identifier:
22318019
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BIOTIN; CRYSTALS; NANOSTRUCTURES; PERFORMANCE; PHOSPHATES; REFRACTIVE INDEX; SENSORS

Citation Formats

Yang, Daquan, State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, Kita, Shota, Wang, Cheng, Lončar, Marko, Liang, Feng, Quan, Qimin, Tian, Huiping, and Ji, Yuefeng. High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing. United States: N. p., 2014. Web. doi:10.1063/1.4867254.
Yang, Daquan, State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, Kita, Shota, Wang, Cheng, Lončar, Marko, Liang, Feng, Quan, Qimin, Tian, Huiping, & Ji, Yuefeng. High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing. United States. doi:10.1063/1.4867254.
Yang, Daquan, State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, Kita, Shota, Wang, Cheng, Lončar, Marko, Liang, Feng, Quan, Qimin, Tian, Huiping, and Ji, Yuefeng. Mon . "High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing". United States. doi:10.1063/1.4867254.
@article{osti_22318019,
title = {High sensitivity and high Q-factor nanoslotted parallel quadrabeam photonic crystal cavity for real-time and label-free sensing},
author = {Yang, Daquan and State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876 and School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 and Kita, Shota and Wang, Cheng and Lončar, Marko and Liang, Feng and Quan, Qimin and Tian, Huiping and Ji, Yuefeng},
abstractNote = {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.},
doi = {10.1063/1.4867254},
journal = {Applied Physics Letters},
number = 6,
volume = 105,
place = {United States},
year = {Mon Aug 11 00:00:00 EDT 2014},
month = {Mon Aug 11 00:00:00 EDT 2014}
}