LMI Seminar:

Hybrid Graphene/Silicon Integrated Photodetectors

Dr. Ilya Goykhman

Micro Nanoelectronics Research Center, Faculty of Electrical and Computer of Engineering, Technion

Wednesday February  23th,  2022

13:00-14:00

Light refreshments and drinks will be served at 12:30

Auditorium 011, Engineering Classroom Building,  Faculty of Engineering, Tel-Aviv University

Abstract: Two-dimensional (2D) materials and van der Waals (vdW) heterostructures have shown tremendous potential for light detection applications, opening new avenues in developing novel, high-performance and broadband photodetectors (PDs) beyond state-of-the-art. A variety of high-performance 2D, hybrid-2D and vdW PDs with ultra-high responsivity, sensitivity and ultra-broad spectral response have been reported so far based on graphene, transition metal dichalcogenides (TMDs), III-VI group layered semiconductors, black phosphorous, and more, covering the visible, infrared and terahertz spectra. Nevertheless, the field is far from reaching its saturation. Quite the opposite, the rich portfolio of 2D materials and newly emerging physical phenomena in vdW heterostructures, together with favourable heterogeneous integration of 2D systems with silicon technology, CMOS read-out electronics and flexible platforms, set new horizons for the development of innovative 2D integrated PDs. In this talk, I will focus on graphene integration with silicon photonics for telecom applications and multispectral photodetection. Key aspects related to device physics, material properties, fabrication process development and system performances will be discussed..

Bio: Dr Ilya Goykhman is an Assistant Professor at the Faculty of Electrical and Computer Engineering and Head of Laboratory for Nanoscale and Quantum Optoelectronics at Technion. Prior to joining Technion, Dr Goykhman was a Senior Research Associate at the Cambridge Graphene Centre (CGC) and a Lecturer at the Centre for Doctoral Training at the University of Cambridge. He is a task leader in the optoelectronics work package in the EU Graphene flagship project. His main research interests span the integrated 2D optoelectronics, device physics, technology development of graphene and 2D materials, 2D/3D hybrid systems for applications in communication, light generation, quantum optics, sensing, memory and energy

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The Annual ACC Workshop

The Advanced Communication Center 

School of Electrical Engineering

Tel Aviv University

 Tuesday, February 15th, 2022

The Advanced Communications Center at the School of Electrical Engineering of Tel-Aviv University is happy to announce its annual event 

in which recent advances in Communications and related fields will be reviewed by leading scientists

Attached please find a detailed schedule

The workshop is free of charge, but advance registration is required

Please register here

  The workshop will be virtual and held over Zoom

For security reasons, a Zoom link will be directly emailed to registered participants a day before the workshop

Program

SCHOOL OF MECHANICAL ENGINEERING SEMINAR

Wednesday, June 1, 2022 at 14:30

Wolfson Building of Mechanical Engineering, Room 206

Numerical Modelling of Spatial Porosity and Asymmetry Impact on Maternal Blood Flow and Oxygen Transport in the Placenta

Tirosh Mekler

M.Sc. student of Gil Marom

The human placenta is a complex organ whose function is not fully understood because clinical studies are restricted by ethical constraints, limited imaging resolution, and availability of the organ. A computational fluid dynamics model of maternal hemodynamics and oxygenation patterns is proposed to better understand the complexity of placenta biomechanics. The objectives of this study are to find how morphological variations in the fetal villi density and in the number and locations of the decidual veins (DVs) affect the hemodynamics and oxygenation. A commonly used approach for numerically simulating the maternal blood flow inside the intervillous space is to model the flow that percolates through the villi branches as a flow through a porous medium. Unlike previous studies that assumed homogeneous porosity, the main structure of the villous tree was included in the current model, and the porosity was spatially distributed. The oxygen uptake inside the placenta was compared for different porosity values. Additionally, various morphologies with different asymmetries were examined, such as different locations and the number of DVs. The internal structure has a significant impact on the flow field and oxygen uptake, as demonstrated by a comparison of several cases with equal volumetric porosity but different spatial distributions of local porosity. The location of DVs and their asymmetric distribution also have a major effect on the oxygen distribution. Specifically, if there are two DVs close to each other or several DVs that contribute to the “short circuit” effect of the maternal blood. Computational modeling is proving to be a valuable tool for investigating the flow mechanics and mass transport in the human placenta. The oxygenation efficiency of the materno-placental circulation is undoubtedly affected by morphological changesJoin

 Zoom Meeting https://us02web.zoom.us/j/82108132163?pwd=Z2h4UzNzUS9mbXplT0lMU1pZenFEQT09