Nov 4 – 8, 2024
Zoom and Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Europe/Zurich timezone

Femtosecond Optical Kerr Effect for Biological Application

Nov 8, 2024, 2:20 PM
15m
Room 103 (Zoom and Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine)

Room 103

Zoom and Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine

The conference will be performed in HYBRID mode: - On-site at Faculty of Physics of Trars Shevchenko National University of Kyiv - VIa ZOOM platform

Speaker

Dr Sandra Mamani (Institute for Ultrafast Spectroscopy and Lasers, Departments of Physics and electrical Engineering, The City College of the City University of New York, 160 Convent Avenue, New York, NY 10031, USA)

Description

The Optical Kerr Effect (OKE) is a non-linear optical phenomenon in which an intense electric field induces a birefringence in the sample causing changes to the non-linear index (n2). The OKE is attributed to the distortion of the bound and free electrons and the disturbance of the molecular motions in a material.
Our work proposes the OKE as a potentially new method to differentiate differet types of tissues through key biomarkers from the temporal profile. The primary biomarker observed in our study comes from the double peak temporal Kerr structure signal, which we first observed in breast chicken tissue and human brain tissue. The second and most important biomarker is the doubling in the tissue’s conductivity. For example, a cancerous breast tissue was shown to be about twice as conductive as healthy tissue depending on its grade. In general, our finding suggests conductivity from electrons and ions in plasma in a tissue can be used as a new major biomarker for the classification or detection of diseases. Our methods can be potentially used for differentiating other diseases such as neurological diseases.

Primary author

Dr Sandra Mamani (Institute for Ultrafast Spectroscopy and Lasers, Departments of Physics and electrical Engineering, The City College of the City University of New York, 160 Convent Avenue, New York, NY 10031, USA)

Presentation materials

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