研究目的
To demonstrate a simple optical fiber microfluidic control device based on photothermal effect induced convection for flexible manipulation and particle sorting in a range of hundreds of microns.
研究成果
The device simplifies the complex equipment and reduces the cost of traditional optical tweezers or fiber tweezers. It has stronger capture force under low-power light source and can achieve long-distance capture of large objectives. This resistive thermal induced convection is used to realize the flexible manipulation and sorting of particles in range of hundreds of microns.
研究不足
The capture force and capture range is small, and the optical force is dependent on the incident irradiance and the refractive index difference between the solution and the particles.
1：Experimental Design and Method Selection:
The experiment utilized three single-mode optical fibers arranged regularly to induce thermal convection for particle capture.
2：Sample Selection and Data Sources:
SiO2 particles with a diameter of 100μm were used in the experiment.
3：List of Experimental Equipment and Materials:
A conventional C-band broadband power-tunable light source, single-mode fiber (Corning SM-28), optical switch module (Nano-Speed Switch), and an optical microscope with a CMOS camera (ZWO ASI 178MM-Cool) were used.
4：Experimental Procedures and Operational Workflow:
The movement of the sample chip was controlled by a three-axis stage, and the light source was switched between fibers to change the distribution of the light field.
5：Data Analysis Methods:
The fluid flow particle tracking module was used to analyze the particle motion by combining drag force, optical force, and particle gravity.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
