Olivier FRANCAIS - Academia.edu (original) (raw)

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Papers by Olivier FRANCAIS

New Journal of Physics, Dec 9, 2008

HAL (Le Centre pour la Communication Scientifique Directe), Jun 12, 2018

HAL (Le Centre pour la Communication Scientifique Directe), Apr 27, 2017

Real-time monitoring of the physiological state of plants using Electrical Impedance Spectroscopy... more Real-time monitoring of the physiological state of plants using Electrical Impedance Spectroscopy (EIS) may help to optimize their need for watering in order for them to efficiently contribute to urban cooling. This paper presents first results obtained from continuous EIS acquisition during 9 days, applied on a celery stalk, in order to follow it physiological stage. A Cole-Cole modeling is used in order to extract parameter evolution versus time or mass loss of the plant. As a first result, a link is established between the curve shape obtained and the celery stalk tampering.

HAL (Le Centre pour la Communication Scientifique Directe), Oct 23, 2022

International journal of molecular sciences, Jan 4, 2015

Electrical properties of living cells have been proven to play significant roles in understanding... more Electrical properties of living cells have been proven to play significant roles in understanding of various biological activities including disease progression both at the cellular and molecular levels. Since two decades ago, many researchers have developed tools to analyze the cell's electrical states especially in single cell analysis (SCA). In depth analysis and more fully described activities of cell differentiation and cancer can only be accomplished with single cell analysis. This growing interest was supported by the emergence of various microfluidic techniques to fulfill high precisions screening, reduced equipment cost and low analysis time for characterization of the single cell's electrical properties, as compared to classical bulky technique. This paper presents a historical review of single cell electrical properties analysis development from classical techniques to recent advances in microfluidic techniques. Technical details of the different microfluidic tech...

This paper presents a novel electrorotation device composed of double-layer electrode array. Two ... more This paper presents a novel electrorotation device composed of double-layer electrode array. Two electrode layers are formed on the top and bottom of thick dielectric (SU-8) pillars and are electrically connected by through-the-SU-8 vias (TSSV). This unique structure electrically fixes vertical height of cells subjected to electro-rotational (ROT) test, which has been the critical issue. All components of electrodes are formed on a single substrate. This makes cells introducing procedure easy (pipetting from above) and thus microfluidic structure is not required. This allows us to locate electrodes two-dimensionally and densely. Therefore, the proposed device realizes reliable and high-throughput electrorotation analyses.