Majid Haji Bagheri

ORCID: 0009-0003-6048-3665
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About
Contact & Profiles
Research Areas
  • Advanced Sensor and Energy Harvesting Materials
  • Conducting polymers and applications
  • Perovskite Materials and Applications
  • Dielectric materials and actuators
  • Polymer composites and self-healing
  • Superconducting and THz Device Technology
  • Terahertz technology and applications
  • Music Technology and Sound Studies
  • Photonic and Optical Devices
  • Ferroelectric and Piezoelectric Materials
  • Tactile and Sensory Interactions
  • Acoustic Wave Resonator Technologies
  • Music and Audio Processing

University of Waterloo
2023-2025

Abstract In recent years, silicon‐based room temperature Terahertz (THz) detectors have become the most optimistic research area because of their high speed, low cost, and unimpeded compatibility with mainstream complementary metal‐oxide‐semiconductor (CMOS) device technologies. However, Silicon (Si) suffers from responsivity noise at THz frequencies. this review, advances in Si‐based using silicon‐on‐insulator (SOI) substrates are presented. These offer several advantages over bulk...

10.1002/adfm.202400313 article EN cc-by Advanced Functional Materials 2024-07-03

Abstract Advancements in live audio processing, specifically sound classification and captioning technologies, have widespread applications ranging from surveillance to accessibility services. However, traditional methods encounter scalability energy efficiency challenges. To overcome these, Triboelectric Nanogenerators (TENG) are explored for harvesting, particularly live‐streaming monitoring systems. This study introduces a sustainable methodology integrating TENG‐based sensors into...

10.1002/adsr.202400156 article EN cc-by Advanced Sensor Research 2025-01-08

Organometal halide perovskite (OHP) composites are flexible and easy to synthesize, making them ideal for ambient mechanical energy harvesting. Yet, the output current density from piezoelectric nanogenerators (PENGs) remains orders of magnitude lower than their ceramic counterparts. In prior composites, high permittivity nanoparticles enhance dielectric constant (ϵr) but reduce strength (Eb). This guides our design: increase by ϵr nanoparticle while enhancing Eb optimizing structure....

10.1038/s41467-024-53846-6 article EN cc-by-nc-nd Nature Communications 2024-11-04

Inorganic (cesium) metal halide perovskites have shown great potential for incorporation into flexible nanogenerators, solar cells, and wearable electronic devices. Their low-temperature solution processability, flexibility, piezoelectric properties uniquely placed them over century-old ceramic materials. Piezoelectric of a material are dependent on crystal orientation could vary in their two-dimensional thin films or three-dimensional bulk microstructure. This study shed light the intrinsic...

10.1109/dcas61159.2024.10539885 article EN 2024-04-19

Organic-inorganic lead based metal halide perovskites have recently emerged as promising candidates for energy harvesting, solar cells, and wearable electronic because of their superior performance. But due to the toxicity lead, lead-free flexible piezoelectric nanogenerator (PENGs) drawn much attention. Here, we reported free PENG, which is a combination formamidinium tin (Sn) perovskite polyvinylidene fluoride (PVDF) soft polymer matrix. However, Sn <sup...

10.1109/dcas61159.2024.10539914 article EN 2024-04-19
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