| Autor: |
Yongjoo Kwon, Eunyong Jeon, Junghoon Lee, Seungyul Choi, Sunggu Kim |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS). |
| Popis: |
We report the first demonstration of interfacial tension monitoring across two immiscible liquids using electrowetting on dielectric (EWOD). Impedance measurement during EWOD reveals the variation of surfactant concentration at the liquid-liquid interface in real time. The discrepancy with optical method was within 3.5 mN/m and the noise level was under 0.5 mN/m. We also show such approach can be used for label-free monitoring of DNA hybridization. Our approach opens a new horizon of EWOD used as a molecular sensing mechanism across a “soft” interface between liquids. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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