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Related Experiment Video

Updated: Oct 6, 2025

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Plasmonic protein electricity generator.

Nikita Paul1, Lakshmi Suresh1, Yixin Chen2

  • 1Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore. msetansc@nus.edu.sg.

Nanoscale Horizons
|January 19, 2022
PubMed
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This summary is machine-generated.

Researchers enhanced solar energy conversion in biohybrid devices by coupling photosynthetic proteins with plasmonic nanoparticles. Gold and silver nanoparticles significantly boosted photocurrent, achieving a 19-fold increase through optimized structures and printing.

Area of Science:

  • Biohybrid devices
  • Renewable energy
  • Nanomaterials science

Background:

  • Growing interest in green energy from sunlight fuels research into biohybrid devices.
  • Coupling photosynthetic proteins with plasmonic nanomaterials can enhance solar energy conversion efficiency.

Purpose of the Study:

  • To investigate the use of plasmonic nanoparticles to enhance the photocurrent output of a Protein Electricity Generator (PEG).
  • To explore the impact of different nanoparticle architectures and printing techniques on device performance.

Main Methods:

  • Incorporation of various gold nanoparticle architectures into the PEG.
  • High-resolution electrohydrodynamic printing of silver nanoparticle ink on electrodes.
  • Optimization of nanoparticle spacing and concentration.

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Last Updated: Oct 6, 2025

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Main Results:

  • Mixing gold nanoparticles (NPs) increased photocurrent, with ~120 nm star-shaped clusters yielding a ~six-fold enhancement.
  • Printing silver nanoparticle lines with 700 nm spacing boosted photocurrent by up to three-fold.
  • Combined gold and silver nanoparticles resulted in a ~19-fold increase in photocurrent and device efficiency.

Conclusions:

  • Plasmonic nanoparticles significantly enhance PEG performance by increasing light absorption and photon path length.
  • Precision printing of nanostructures is crucial for optimizing biohybrid device efficiency.
  • The additive effects of gold and silver nanoparticles offer a promising strategy for improving solar energy conversion in biohybrid systems.