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Related Experiment Video

Updated: Oct 22, 2025

Optical Trap Loading of Dielectric Microparticles In Air

Optical Trap Loading of Dielectric Microparticles In Air

Published on: February 5, 2017

Temperature Effects on Optical Trapping Stability.

Dasheng Lu¹, Francisco Gámez², Patricia Haro-González¹

¹Nanomaterials for Bioimaging Group, Departamento de Física de Materiales, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7, 28048 Madrid, Spain.

|August 27, 2021

Summary

Optically trapped luminescent particles offer contactless thermal sensing. However, elevated temperatures can destabilize optical trapping of micro/nanoparticles, impacting their use as probes.

Keywords:

Brownian motions optical forces optical trapping temperature

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Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Luminescent particles are increasingly used for contactless thermal sensing due to luminescence sensitivity to environmental conditions.
Optical trapping of micro/nanoparticles is a key technique, but its stability is affected by temperature.
The influence of temperature on optical trapping stability is not always thoroughly investigated.

Purpose of the Study:

To review recent experimental findings on thermal sensing using micro/nanoparticles.
To present the current understanding of temperature effects on optical trapping stability.
To highlight challenges in optical trapping at elevated temperatures.

Main Methods:

Utilizing luminescent micro/nanoparticles as probes in optical traps.
Investigating the dependence of luminescence on temperature for sensing applications.
Analyzing the impact of temperature-induced Brownian motion on trapping stability.

Main Results:

Temperature increments, even minor ones, can significantly disturb Brownian motion.
Increased Brownian motion at higher temperatures can lead to particle release from optical traps.
Luminescence properties of particles are sensitive to temperature, enabling thermal sensing.

Conclusions:

Contactless thermal sensing using luminescent particles is a promising field.
Temperature-induced instability in optical trapping poses a challenge for high-temperature applications.
Further research is needed to optimize optical trapping stability for thermal sensing at elevated temperatures.