Journal
NANO TODAY
Volume 22, Issue -, Pages 132-144Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.nantod.2018.08.008
Keywords
Colloidal; Photonic crystals; Sensors; Nanostructures; Spectrum analysis
Categories
Funding
- National Key R&D Program of China [2018YFA020850]
- National Natural Science Foundation of China [21522308, 51573192, 51773206, 51473173]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09020000]
- External Cooperation Program of BIC, Chinese Academy of Sciences [121111KYSB20150022]
- Youth Innovation Promotion Association CAS
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Colloidal photonic crystal (PC) sensors have been well developed due to their unique advantages in preparation and functionalization, and have been applied into diverse sensing systems. Recently, many breakthroughs about new-type colloidal PC sensors with fast respond speed, high sensitivity and excellent selectivity have been achieved. In this review, we summarize the recent advances of colloidal PC sensors from aspects of materials, structures, and analysis methods, to exhibit the diverse developing strategies. Firstly, an overview of colloidal PC sensors composed of new responsive materials is presented. Next, the unique structures are systematically summarized according to their scale increasing from nanoscale to macroscale, including the colloidal nanoparticles with novel structures and morphologies, the micro sized PC units, and the integrated PC devices. Then, two series of new analysis methods, cross-reactive analysis based on PC sensors and time/spatial resolved reflection spectra analysis, are highlighted and discussed in details because they can greatly improve the selectivity of recognitions. Finally, a summary and some perspectives on several development directions in this attractive research field are presented. (C) 2018 Elsevier Ltd. All rights reserved.
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