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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
Published on: September 27, 2011
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White-light-driven plasmonic nanoparticle printing for opto-thermal manipulation and SERS application
Shreyas Mysuru Shivalingegowda1, Sajan D George1
1Centre for Applied Nanosciences (CANs), Manipal Institute of Applied Physics, Manipal Academy of Higher Education, Manipal, 576104, India. sajan.george@manipal.edu.
Nanoscale
|September 25, 2025
Summary
White light can now print plasmonic nanoparticles for optothermal trapping and manipulation. This technique enhances Raman spectroscopy sensitivity for detecting molecules like crystal violet.
Area of Science:
- Nanotechnology
- Optics
- Materials Science
Background:
- Optical printing of nanoparticles offers a flexible method for creating plasmonic patterns.
- Current methods using focused laser beams limit practical applications.
Purpose of the Study:
- To demonstrate white-light-assisted printing of plasmonic nanoparticles.
- To utilize these printed patterns for optothermal trapping and manipulation.
- To investigate the application in surface-enhanced Raman spectroscopy (SERS).
Main Methods:
- White-light-assisted optical printing of plasmonic nanoparticles.
- Selective optical radiation exposure for optothermal trapping.
- Object manipulation along pre-defined paths using optothermal forces.
- Surface-enhanced Raman spectroscopy (SERS) for analysis.
Main Results:
- Successful white-light printing of plasmonic nanoparticles.
- Demonstration of optothermal trapping and manipulation of objects.
- Printing time influences Raman signal enhancement.
- Optimized patterns achieved a limit of detection of 62 pM for crystal violet.
Conclusions:
- White-light printing provides a viable alternative for plasmonic nanoparticle fabrication.
- Optothermal forces enable precise manipulation of trapped objects.
- The developed SERS method shows high sensitivity for molecular detection.
