On the 30th of November 2022, as part of the Photonics Seminar Series, we will have the pleasure to have two PhD students from Skoltech Center for Photonic Science and Engineering present their research results: Anastasiia Merdalimova and Aly Elakshar.
When: On the 30th of November 2022, Wednesday, at 17:00 MSK time
Where: New Campus room E-B2-3007 / BigBlueButton
Anastasiia Merdalimova will give a talk entitled “Hollow-Core Microstructured Optical Fibers for Sensing Applications” and discuss, in particular, refractive index sensing , layer deposition control, Raman and SERS sensing with hollow-core microstructured optical fibers.
Anastasiia Merdalimova was graduated from Bauman Moscow State Technical University (BMSTU) on optical engineering in 2018. At senior courses, she worked at Unique Fiber Devices LLC, working on distributed fiber sensors. Then she was an intern in the Bionanophotonic Systems laboratory in EPFL, Lausanne. Currently, Anastasiia is a Ph.D. student in the Biophotonics laboratory of Prof. Dmitry Gorin at Skoltech. Her research projects are related to extracellular vesicles, Raman spectroscopy and hollow-core microstructured fibers.
Hollow-core microstructured optical fibers (HC-MOFs) presented in the present talk are 6-cm waveguides with a hollow core 250 um in diameter and several rows of hollow capillaries around. As for light propagation, such structure provides quasi-sinusoidal transmission spectrum, with positions corresponding to refractive indexes and wall indexes. Therefore, HC-MOFs may be utilized for refractive index sensing and layer deposition control. From another side, HC-MOFs may be beneficial for Raman and SERS sensing. These four sensing applications and their combinations will be discussed.
Aly Elakshar will present “Single-walled carbon nanotubes (SWCNTs) for efficient photovoltaics” and discuss advanced solar cells based on carbon nanotubes.
About the speaker:Graduated with physics B.Sc. degree from Menoufia University, Egypt, in 2015. Obtained M.Sc. in photonics and quantum materials from SkolTech in 2020. He is now a PhD-3 student at the Prof. Albert Nasibulin‘s Laboratory of Nanomaterials.
Single-walled carbon nanotubes (SWCNTs) are 1-D materials with outstanding properties for various applications, especially in solar cells. AACVD synthesized SWCNT films are used as an electrode in a hole transport layer free (HTL) stack. CNTs can efficiently substitute the expensive hole transport materials. Passivating the interfaces with CNTs further improves the charge dynamics at the interfaces. This is investigated using various electrical, structural and photoluminescence techniques. This leads to enhancing the photovoltaic performance and reaching record efficiency for HTL-free solar cell.