Sagnik Ghosh

Bistable Bimorph PMUT with Large Switching Displacement and Acoustic Output

Shyam Trivedi, Prakasha Chigahalli Ramegowda, Sagnik Ghosh, Duan Jian Goh et autres

This paper reports, for the first time, bistability in a bimorph Piezoelectric Micromachined Ultrasonic Transducer (PMUT) composed of$\text{Sc}_{0.3} \text{Al}_{0.7}\ \mathrm{N}$layers, with a total device thickness of$1.65 \mu\ \mathrm{m}$. The device exhibits large switching displacement exceeding$11 \mu\ \mathrm{m}$and peak-to-peak velocity of$16\ \mathrm{m} / …

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Raspberry bush – derived magnetic nanocomposites for water purification and microwave absorption

Bagher Aslibeiki, Mahsa Imani, Mahsa Mahmoodi, Sagnik Ghosh et autres

nanoparticles optimize impedance matching. This work highlights a sustainable, biomass-derived strategy for designing high-performance, multifunctional materials that can find applications in both water purification and electromagnetic wave absorption.

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Comparative Evaluation of Mechanical Performance of pMUT with Different Membrane Diameters in PZT and ScAlN30%

Barretta Luigi, Rossana Scaldaferri, Alessandro Stuart Savoia, Yul Koh et autres

This study presents a comprehensive vibrometric characterization of piezoelectric Micromachined Ultrasonic Transducers (pMUTs). Initially, Fast Fourier Transform (FFT) analysis was employed to identify the resonance frequencies of the pMUTs. Subsequently, signals at these resonance frequencies were utilized to measure the displacement and …

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Bias Optimization and Polymer Encapsulation Synergy for Immersion PMUTs: A Comparative Study of Sylgard 160 and 184

David Sze Wai Choong, Sagnik Ghosh, Yu Feng Thien, Mantalena Sarafianou et autres

In this work, we investigate how the selection of PDMS encapsulant, Sylgard 160 and Sylgard 184, affects the transmit and receive performance of immersion coupled PVD PZT PMUTs under the influence of DC bias. First, the benefit of having PDMS encapsulant has …

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Triphasic Inter‐Dimensional WS 2 /Magnetic Lithium Iron Oxide Nanocomposite for Electromagnetic Interference Shielding

Sagnik Ghosh, Mustafa Aboulsaad, Sawssen Slimani, Johan Cedervall et autres

Abstract The widespread use of wireless devices and telecommunication networks has given rise to electromagnetic interference (EMI) pollution that can cause data corruption, critical device failure, and detrimental effects on wildlife and human health. Developing EMI shielding materials can block these harmful …

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MXene-based electroconductive textiles: synthesis to multidirectional applications

Sagnik Ghosh, Bapan Adak, Samrat Mukhopadhyay

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Electromagnetic interference shielding properties of biphasic lithium iron oxides Electromagnetic interference shielding properties of biphasic lithium iron oxides

Sagnik Ghosh

Biphasic lithium iron oxide nanocomposites for enhancement in electromagnetic interference shielding properties

Sagnik Ghosh, Pramod K. B. Rangaiah, Mustafa Aboulsaad, Sawssen Slimani et autres

There is a great demand for efficient electromagnetic interference (EMI) shielding materials due to exponential growth in wireless telecommunication devices. These devices emit electromagnetic radiation that can disrupt electronic devices, and cause health hazards. Therefore, it is crucial to develop materials that …

Apple Tree Root‐Derived Biochar/Iron Oxide Triphasic Nanocomposite for Wastewater Treatment and Microwave Absorption

Mahsa Mahmoodi, Bagher Aslibeiki, Sagnik Ghosh, Leila Hasani et autres

Abstract In this work, two major sources of pollution: (1) Water pollution due to heavy metals, and (2) Electromagnetic wave (EMW) pollution, often regarded as the fourth category of pollution (after air, water, and soil pollution) are addressed. A unique bio‐based triphasic …

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IoMT – An ML‐Based Patient Monitoring System with Prediction of Health Condition

Kakali Das, Sagnik Ghosh, Himadri Sekhar Dutta

The Internet of Things (IoT) has brought about a revolution in the information technology as well as communication industries as it has created easier and automated life benefits. Due to our hectic schedule and irregular lifestyle in the modern era, the health …

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Magnetic nanocomposite for lead (II) removal from water

Asif Shahzad, Bagher Aslibeiki, Sawssen Slimani, Sagnik Ghosh et autres

Abstract A magnetic perovskite-spinel oxide nanocomposite synthesized through a sol–gel self-combustion process is used for the first time as an adsorbent to remove toxic heavy metals (i.e., Pb 2+ ). The synthesized LaFeO 3 :CoFe 2 O 4 ((LFO) 1 :(CFO) x …

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Recent developments in the state-of-the-art optoelectronic synaptic devices based on 2D materials: a review

Rajesh Jana, Sagnik Ghosh, Ritamay Bhunia, Avijit Chowdhury

This review showcases the diverse functionalities of 2D materials and state-of-the-art developments in device structures, working principles, design strategies of materials, and the integration of 2D material-based optoelectronic synaptic devices.

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