Researchers Develop Magnetic Field Sensor Using Gold Nanoparticles

Strategic Insights -

Scientists at Shahid Beheshti University in Tehran, Iran, have created a novel magnetic field sensor using gold nanoparticles and a plastic optical fiber. The sensor operates by detecting the interaction between the guided modes in the optical fiber and the surface plasma waves supported by the gold nanoparticles. This innovative technology has the potential to revolutionize the field of nanotechnology.

Key Takeaways:

  • The sensor is designed to detect the magnetic field by utilizing the surface plasmon resonance phenomenon.
  • The sensing region is coated with spherical gold nanoparticles made using laser ablation.
  • The sensor has three optical fibers: reference, measurement, and control fiber.
  • The intensity of the output light is recorded by a smartphone camera and processed to obtain an intensity graph over time.
  • The presence of a magnetic field causes a decrease in the intensity of the light output due to coupling between the magnetic field and the plasmonic properties.
  • Financial support for this research was provided by the Iran National Science Foundation (INSF).
  • The research has been peer-reviewed and published in Optics & Laser Technology.

Statistics:

  • The sensor uses spherical gold nanoparticles with an unknown size and quantity.
  • The magnetic field sensor has a sensitivity to magnetic fields, and its sensitivity is not explicitly stated.
  • The research was conducted in Tehran, Iran, and funded by the Iran National Science Foundation (INSF).
  • The publication date of the research is August 2021 in Optics & Laser Technology.

Sources:

  • VerticalNews. "Researchers detail new data in Nanotechnology - Gold Nanoparticles". August 2, 2021.
  • Karimzadeh, R., et al. "Magnetic Field Sensor Based On Plasmonic Fiber Optics Coupled With Smartphone." Optics & Laser Technology, vol. 140, 2021.
  • Elsevier. Optics & Laser Technology. "Elsevier - www.elsevier.com; Optics & Laser Technology - www.journals.elsevier.com/optics-and-laser-technology/"