Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

7.0K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
7.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Response surface analysis of CuInSe<sub>2</sub> nanoparticle synthesis: unravelling the interplay of temperature, time, and ligand composition for size control.

Nanoscale·2026
Same author

Mechanochemically-mediated dynamic imine bond conjugation for drug delivery using carbon dots.

Nanoscale·2025
Same author

Enhancing X-ray Activated Photodynamic Therapy with Supported Lipid Bilayer-Coated Radioluminescent Nanoparticles.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Light-Activated Micromotors in Air Propelled by Thermal Convection.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Silica-coated LiYF<sub>4</sub>:Yb<sup>3+</sup>, Tm<sup>3+</sup> upconverting nanoparticles are non-toxic and activate minor stress responses in mammalian cells.

RSC advances·2024
Same author

Achieving photostability in dye-sensitized upconverting nanoparticles and their use in Fenton type photocatalysis.

Nanoscale·2023

Related Experiment Video

Updated: Jul 6, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

17.0K

Janus Micromotors for Photophoretic Motion and Photon Upconversion Applications Using a Single Near-Infrared

Pedro Mena-Giraldo1, Mannu Kaur1, Steven L Maurizio1

  • 1Department of Chemistry and Biochemistry, Centre for NanoScience Research, Concordia University, Montreal, Quebec H4B 1R6, Canada.

ACS Applied Materials & Interfaces
|January 10, 2024
PubMed
Summary

This study presents novel Janus micromotors with iron oxide and upconverting nanoparticles. These light-activated micromotors demonstrate efficient pollutant degradation and motion tracking using a single excitation wavelength.

Keywords:
micromotorsmotion trackingphotophoretic convective motionpollutant degradationreactive oxygen species generationupconverting nanoparticles

More Related Videos

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

11.4K
An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation
11:20

An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation

Published on: August 30, 2017

7.5K

Related Experiment Videos

Last Updated: Jul 6, 2025

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

17.0K
Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

11.4K
An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation
11:20

An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation

Published on: August 30, 2017

7.5K

Area of Science:

  • Nanotechnology
  • Materials Science
  • Physical Chemistry

Background:

  • External stimuli can induce propulsion in micromotors, enhancing their kinetic efficiency.
  • Light-activated micromotors offer precise spatiotemporal control over motion.
  • Photophoretic motion, driven by light-induced temperature gradients, is a promising propulsion mechanism.

Purpose of the Study:

  • To develop and characterize Janus micromotors with integrated upconverting nanoparticles for light-driven motion and applications.
  • To utilize a single excitation wavelength for both micromotor propulsion and upconversion luminescence.
  • To demonstrate the practical utility of these micromotors in pollutant degradation and motion tracking.

Main Methods:

  • Fabrication of Janus micromotors incorporating Fe3O4 nanoparticles and NaGdF4:Yb3+,Er3+/LiYF4: Yb3+,Tm3+ upconverting nanoparticles.
  • Utilizing 976 nm excitation to generate temperature gradients via Fe3O4 nanoparticles for photophoretic motion.
  • Employing upconversion luminescence for motion tracking and triggering reactive oxygen species generation.

Main Results:

  • The Janus architecture facilitated efficient upconversion luminescence and photophoretic motion.
  • A single excitation wavelength enabled simultaneous propulsion, motion tracking, and reactive oxygen species generation.
  • Micromotors achieved over twice the degradation rate of Rhodamine B compared to static counterparts.
  • Upconversion luminescence allowed for convenient motion trajectory analysis from single image frames.

Conclusions:

  • The developed micromotors offer a versatile platform for light-driven motion and diverse applications.
  • Integrated upconversion luminescence provides capabilities for tracking, sensing, nanothermometry, and pollutant degradation.
  • This system demonstrates a significant advancement in controlling and utilizing micromotor behavior for practical purposes.