Name of the speaker: Dr. Suman Mandal
Title: Low-Power, High-Performance Organic Electronic Devices and Their Applications
Date and Time: 22 October 2025, 3:00 PM to 4:00 PM
Venue: ONLINE
Abstract: This talk presents an overview of my research journey in organic electronics, focusing on the development of advanced, sustainable smart sensor technologies. I will describe the fabrication and characterization of low-voltage, high-performance organic field-effect transistors (OFETs) for healthcare applications, highlighting the unique approach of using the OFET dielectric layer as an active sensing medium while leveraging the device’s inherent tunable signal capabilities. Additionally, I will discuss my postdoctoral research at University College London, which focused on high-k polymer nanocomposite materials incorporating advanced hetero-phased functionalized nanofillers within a PVDF polymer matrix. At King Abdullah University of Science and Technology (KAUST), my work centers on developing innovative organic hydrogen sensors that leverage a recently observed general phenomenon in p-type organic semiconductors, known as oxygen doping and de-doping, to enable ultra-responsive, low-power hydrogen gas detection. I have also worked on nanogap-based, ultra-fast humidity sensors fabricated using adhesion lithography. Furthermore, I will also discuss our recent project on molecular engineering and the incorporation of porosity using the breath figure method to enhance the performance of organic sensors together with my future research goal. My research tackles key challenges in energy and environmental monitoring by developing sustainable, costeffective sensors, with a focus on translating material properties into practical solutions for healthcare and environmental application
About of Speaker: Dr. Suman Mandal is a researcher and innovator in organic electronics, specializing in the development of advanced organic semiconductor devices for sensing and emerging technologies. His research bridges applied physics, functional chemistry, and nanotechnology, focusing on the electrical, optical, and structural properties of organic materials and their responses to stimuli such as temperature, humidity, pressure, and gases. His research integrates organic sensors with embedded electronic systems to create portable, wireless platforms capable of real-time data transfer to mobile applications, aiming to translate material properties into scalable, industrially relevant technologies (See link 1, link 2). Dr. Mandal completed his Ph.D. in 2020 from the IIT Kharagpur, where he developed lowvoltage, high-performance organic field-effect transistors (OFETs) tailored for healthcare applications. At the University College London (UCL), he pioneered high-k polymer nanocomposites, introducing functionalized heterophase fillers to achieve enhanced dielectric performance. During his postdoctoral research at KAUST, he designed organic hydrogen sensors and discovered oxygen doping and de-doping phenomena, enabling rapid, ultraresponsive, and cost-effective hydrogen detection. He also developed asymmetric-electrode nanogap devices using adhesion lithography, achieving ultrafast humidity sensing. He has extensive expertise in instrumentation interfacing using MATLAB and laboratory infrastructure development, including gas- and strain-sensing setups, PVD and OMBD systems, probe stations, and dielectric measurement units. Currently at the University of Manchester, his research focuses on molecularly engineered materials and breath-figure-based porous structures to enhance gas-sensing performance in organic electronic devices.
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