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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Published on: November 30, 2012

A highly sensitive compact liquid sensor based on slotted phononic crystal plates.

Chen Wang¹, Feiyan Cai², Fei Li³

¹Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang 110819, China. kangy@neusoft.com and Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. fy.cai@siat.ac.cn.

|October 27, 2016

Summary

Slotted phononic crystal plates (SPCP) offer sensitive liquid sensing by analyzing acoustic wave interactions. This technology requires minimal sample volume, enabling efficient lab-on-chip biochemical applications.

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Area of Science:

Acoustic physics
Materials science
Biosensing technology

Background:

Traditional liquid sensing methods often require larger sample volumes and exhibit lower sensitivity.
Phononic crystal plates offer unique acoustic wave confinement properties.
Developing highly sensitive and low-volume liquid sensors is crucial for advanced biochemical analysis.

Purpose of the Study:

To develop and demonstrate a novel liquid sensing platform using slotted phononic crystal plates (SPCP).
To investigate the sensing mechanism based on acoustic wave interaction with liquid properties.
To evaluate the sensitivity and sample volume requirements of the SPCP sensor compared to existing technologies.

Main Methods:

Utilizing slotted phononic crystal plates (SPCP) for acoustic wave confinement.
Analyzing the acoustic energy flux transmission spectrum to detect changes in liquid properties.
Correlating resonance frequency shifts with the density and sound velocity of liquid samples.

Main Results:

The SPCP system demonstrates a strong dependence of its acoustic energy flux transmission spectrum on liquid properties.
Resonance frequency shifts in the SPCP sensor directly correlate with the density and sound velocity of the liquid.
The SPCP sensor exhibits significantly higher sensitivity and requires a minimal liquid sample volume compared to traditional Lamb wave sensors.

Conclusions:

SPCPs provide a highly sensitive and efficient method for liquid sensing.
The developed SPCP liquid sensor is suitable for integration into lab-on-chip systems.
This technology holds promise for broad lab-on-chip biochemical sensing applications due to its advantages.