LABEL-FREE REFRACTIVE INDEX SENSING WITH FREE-SPACE COUPLED PHOTONIC CRYSTAL SLABS

Author

Yonghao Liu

Graduation Semester and Year

2017

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy in Electrical Engineering

Department

Electrical Engineering

First Advisor

Weidong Zhou

Second Advisor

Yuze Sun

Abstract

Label-free optical resonance sensors can detect small changes of refractive index (RI), which could be used for biochemical molecular detection, drug screening or gas detection. One of the most critical parameters in these sensors is the sensor detection limit (DL). Reducing DL can be achieved by increasing the resonance quality factors (Q) and the spectral sensitivity (S). Another critical research challenge in these sensors is the sensing specificity. In this thesis, based on Fano resonance principle in two-dimensional photonic crystal slabs (PCS) and the integration with gas separation columns, we investigated various free-space coupled on-chip optical resonance sensors for both liquid sensing and gas sensing/separation.

Keywords

Sensors, Photonic crystal slab

Disciplines

Electrical and Computer Engineering | Engineering

License

This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.

Comments

Degree granted by The University of Texas at Arlington

Recommended Citation

Liu, Yonghao, "LABEL-FREE REFRACTIVE INDEX SENSING WITH FREE-SPACE COUPLED PHOTONIC CRYSTAL SLABS" (2017). Electrical Engineering Dissertations. 324.
https://mavmatrix.uta.edu/electricaleng_dissertations/324