configuration transition
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Biosensors ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 385
Author(s):  
Jinan Deng ◽  
Dandan Han ◽  
Jun Yang

Liquid crystals (LCs) with stimuli-responsive configuration transition and optical anisotropic properties have attracted enormous interest in the development of simple and label-free biosensors. The combination of microfluidics and the LCs offers great advantages over traditional LC-based biosensors including small sample consumption, fast analysis and low cost. Moreover, microfluidic techniques provide a promising tool to fabricate uniform and reproducible LC-based sensing platforms. In this review, we emphasize the recent development of microfluidics in the fabrication and integration of LC-based biosensors, including LC planar sensing platforms and LC droplets. Fabrication and integration of LC-based planar platforms with microfluidics for biosensing applications are first introduced. The generation and entrapment of monodisperse LC droplets with different microfluidic structures, as well as their applications in the detection of chemical and biological species, are then summarized. Finally, the challenges and future perspectives of the development of LC-based microfluidic biosensors are proposed. This review will promote the understanding of microfluidic techniques in LC-based biosensors and facilitate the development of LC-based microfluidic biosensing devices with high performance.


2020 ◽  
Vol 11 (3) ◽  
pp. 920-926
Author(s):  
Pengfei Lv ◽  
Ying Sun ◽  
Laizhi Sui ◽  
Zhiwei Ma ◽  
Kaijun Yuan ◽  
...  

2017 ◽  
Vol 45 (1) ◽  
pp. 102-111 ◽  
Author(s):  
Jinghua Jiang ◽  
Deng-Ke Yang

2016 ◽  
Vol 125 ◽  
pp. 146-153 ◽  
Author(s):  
Jiao Shi ◽  
Hang Yin ◽  
Jingzhou Yu ◽  
Lingnan Liu ◽  
Kun Cai

2016 ◽  
Vol 2016 ◽  
pp. 1-21 ◽  
Author(s):  
Xiang Zou ◽  
Peng Cheng ◽  
Bang An ◽  
Jingyan Song

Current airspace is sectorized according to some predefined rules that are not flexible. To facilitate utilizing the airspace more efficiently, methods to design sectors need to be promoted. In this paper, we propose an undirected graph cut-based approach that employs a memetic local search-embedded constrained evolution algorithm, NSGA-II, to generate nondominated airspace configurations. We also propose a new concave hull-based method to automatically depict sector boundaries. In addition, we also study the configuration transition problem. We define the similarity of the two different configurations and calculate their similarity with a bisection diagram and a minimum cost flow algorithm. We build a forward network to represent configuration transitions across several consecutive time periods and use multiobjective dynamic programming to determine a series of nondominated configuration links from the first period to the end. We test our approaches by simulation in high-altitude airspace controlled by Beijing Area Control Center. The results show that our sectorization method outperforms the current configuration in practice, providing a lower sector number, lower intersector flow, more balanced workload distribution among the different sectors, and no constraint violations, so that the proposed approach shows its significant potential as practical applications for dynamic airspace configuration.


AIP Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 057155
Author(s):  
Yonggang Zheng ◽  
Haitang He ◽  
Hongfei Ye

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