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Inkjet-Printed Biofunctional Thermo-Plasmonic Interfaces for Patterned Neuromodulation.

Hongki Kang1, Gu-Haeng Lee1, Hyunjun Jung1

  • 1Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea.

ACS Nano
|February 7, 2018
PubMed
Summary
This summary is machine-generated.

Inkjet printing creates biocompatible thermo-plasmonic interfaces using metal nanoparticles. This technology precisely controls heat for modulating biological activities, offering a universal bioengineering solution.

Keywords:
contact line pinninginkjet printingmicroelectrode arraynanoparticle assemblyneuromodulationpolyelectrolyte layer-by-layer coatingthermo-plasmonics

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Localized heat generation via the thermo-plasmonic effect of metal nanoparticles shows promise in biomedical research.
  • Precise nanoparticle patterning with inkjet printing is crucial for controlled thermo-plasmonic applications.
  • A universal inkjet printing method for biocompatible nanoparticle patterning is currently lacking.

Purpose of the Study:

  • To develop a universally applicable inkjet printing process for creating biofunctional thermo-plasmonic interfaces.
  • To enable precise control over heat generation and biological activity modulation.
  • To establish a method for high-quality, biocompatible nanoparticle assembly on diverse substrates.

Main Methods:

  • Development of an inkjet printing process utilizing plasmonic nanoparticles on polyelectrolyte layer-by-layer substrate coatings.
  • Employing induced contact line pinning and electrostatically assisted nanoparticle assembly for high-quality interfaces.
  • Characterization of heat generation resolution and demonstration of selective neuronal network activity modulation.

Main Results:

  • Achieved high-quality, biocompatible thermo-plasmonic interfaces on various substrates (rigid/flexible, hydrophobic/hydrophilic).
  • Confirmed micrometer-resolution heat application over large areas using inkjet-printed patterns.
  • Demonstrated selective modulation of neuronal network activities using inkjet-printed gold nanorods.

Conclusions:

  • The developed inkjet printing process is a universal method for creating biofunctional thermo-plasmonic interfaces.
  • This technology enables precise, localized heat generation for modulating biological functions.
  • The approach holds significant potential for diverse bioengineering applications requiring controlled thermo-plasmonic effects.