20240053249. POLARIZATION SELECTIVE REFLECTION GEOMETRY TRAPPING OF NANOPARTICLES simplified abstract (UVic Industry Partnerships Inc.)

POLARIZATION SELECTIVE REFLECTION GEOMETRY TRAPPING OF NANOPARTICLES

Organization Name

UVic Industry Partnerships Inc.

Inventor(s)

Reuven Gordon of Victoria (CA)

Behnam Khosravi of Victoria (CA)

POLARIZATION SELECTIVE REFLECTION GEOMETRY TRAPPING OF NANOPARTICLES - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240053249 titled 'POLARIZATION SELECTIVE REFLECTION GEOMETRY TRAPPING OF NANOPARTICLES

Simplified Explanation

The patent application describes optical tweezer methods and apparatus that operate in reflection mode using polarization selection to isolate an input laser signal from optical signals associated with trapping.

• Trapping aperture or apertures can be defined in a conductive film such as a gold film, which have a polarization-dependent reflectance due to asymmetry of the aperture.
• The reflected beam is polarized differently than an incident beam, allowing the polarization of scattered light from the aperture to be distinguished from the polarization of the incident beam.
• In some cases, polarizing nanoparticles, such as nanorods, are detected based on either transmitted or reflected optical radiation in a different state of polarization than that of the incident beam.

1. 1. 1. Potential Applications

• Optical trapping and manipulation of nanoparticles for biological and medical research.
• High precision assembly of microscale and nanoscale structures in manufacturing processes.

1. 1. 1. Problems Solved

• Isolation of input laser signal from optical signals associated with trapping.
• Distinguishing between scattered light from the aperture and incident beam polarization.

1. 1. 1. Benefits

• Improved accuracy and efficiency in optical trapping experiments.
• Enhanced control and manipulation of nanoparticles for various applications.

Original Abstract Submitted

optical tweezer methods and apparatus that operate in reflection mode use polarization selection to isolate an input laser signal from optical signals associated with trapping. a trapping aperture or apertures can be defined in a conductive film such as a gold film have a polarization-dependent reflectance due to asymmetry of the aperture, and a reflected beam is polarized differently than an incident beam. polarization of scattered light from the aperture can thus be distinguished from polarization of the incident beam. in some cases, an aperture is not used but instead polarizing nanoparticles, such as nanorods, are detected based on either transmitted or reflected optical radiation in a different state of polarization than that of the incident beam.