Real-time monitoring of adipocyte differentiation using a capacitance sensor array

Lab on a Chip ◽  
2013 ◽  
Vol 13 (17) ◽  
pp. 3410 ◽  
Author(s):  
Rimi Lee ◽  
Inji Jung ◽  
Miyoung Park ◽  
Hunjoo Ha ◽  
Kyung Hwa Yoo
Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1922
Author(s):  
Gwang Su Kim ◽  
Yumin Park ◽  
Joonchul Shin ◽  
Young Geun Song ◽  
Chong-Yun Kang

The breath gas analysis through gas phase chemical analysis draws attention in terms of non-invasive and real time monitoring. The array-type sensors are one of the diagnostic methods with high sensitivity and selectivity towards the target gases. Herein, we presented a 2 × 4 sensor array with a micro-heater and ceramic chip. The device is designed in a small size for portability, including the internal eight-channel sensor array. In2O3 NRs and WO3 NRs manufactured through the E-beam evaporator’s glancing angle method were used as sensing materials. Pt, Pd, and Au metal catalysts were decorated for each channel to enhance functionality. The sensor array was measured for the exhaled gas biomarkers CH3COCH3, NO2, and H2S to confirm the respiratory diagnostic performance. Through this operation, the theoretical detection limit was calculated as 1.48 ppb for CH3COCH3, 1.9 ppt for NO2, and 2.47 ppb for H2S. This excellent detection performance indicates that our sensor array detected the CH3COCH3, NO2, and H2S as biomarkers, applying to the breath gas analysis. Our results showed the high potential of the gas sensor array as a non-invasive diagnostic tool that enables real-time monitoring.


2013 ◽  
Vol 176 ◽  
pp. 1176-1182 ◽  
Author(s):  
Yuki Aonuma ◽  
Yasuhiko Kondo ◽  
Ayumi Hirano-Iwata ◽  
Atena Nishikawa ◽  
Yasuo Shinohara ◽  
...  

2020 ◽  
Vol 5 (3) ◽  
pp. 409-416
Author(s):  
Nguyen Xuan Thai ◽  
Nguyen Van Duy ◽  
Chu Manh Hung ◽  
Hugo Nguyen ◽  
Matteo Tonezzer ◽  
...  

2014 ◽  
Vol 87 ◽  
pp. 564-567 ◽  
Author(s):  
P. Oikonomou ◽  
A. Botsialas ◽  
A. Olziersky ◽  
I. Stratakos ◽  
S. Katsikas ◽  
...  

2018 ◽  
Vol 12 (3) ◽  
pp. 510-520 ◽  
Author(s):  
Bathiya Prashan Senevirathna ◽  
Sheung Lu ◽  
Marc P. Dandin ◽  
John Basile ◽  
Elisabeth Smela ◽  
...  

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5237
Author(s):  
Jinsoo Park ◽  
Yonghyun Lee ◽  
Youjin Hwang ◽  
Sungbo Cho

Label-free and real-time monitoring of the bacterial viability is essential for the accurate and sensitive characterization of the antibiotic effects. In the present study, we investigated the feasibility of the interdigitated and wave-shaped electrode (IWE) for monitoring the effect of tetracycline or kanamycin on Staphylococcus aureus (S. aureus) and methicillin-resistant S.aureus (MRSA). The electrical impedance spectra of the IWE immersed in the culture media for bacterial growth were characterized in a frequency range of 10 Hz to 1 kHz. The capacitance index (CI) (capacitance change relevant with the bacterial viability) was used to monitor the antibiotic effects on the S. aureus and MRSA in comparison to the traditional methods (disk diffusion test and optical density (OD) measurement). The experimental results showed that the percentage of change in CI (PCI) for the antibiotic effect on MRSA was increased by 51.58% and 57.83% in kanamycin and control, respectively. In contrast, the PCI value decreased by 0.25% for tetracycline, decreased by 52.63% and 37.66% in the cases of tetracycline and kanamycin-treated S. aureus, and increased 2.79% in the control, respectively. This study demonstrated the feasibility of the IWE-based capacitance sensor for the label-free and real-time monitoring of the antibiotic effects on S. aureus and MRSA.


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