Laser Actuated Microgripper Using Optimized Chevron-Shaped Actuator

Author:

Ahmad BelalORCID,Chambon Hugo,Tissier Pierre,Bolopion Aude

Abstract

In this paper, we propose a laser actuated microgripper that can be activated remotely for micromanipulation applications. The gripper is based on an optothermally actuated polymeric chevron-shaped structure coated with optimized metallic layers to enhance its optical absorbance. Gold is used as a metallic layer due to its good absorption of visible light. The thermal deformation of the chevron-shaped actuator with metallic layers is first modeled to identify the parameters affecting its behavior. Then, an optimal thickness of the metallic layers that allows the largest possible deformation is obtained and compared with simulation results. Next, microgrippers are fabricated using conventional photolithography and metal deposition techniques for further characterization. The experiments show that the microgripper can realize an opening of 40 µm, a response time of 60 ms, and a generated force in the order of hundreds of µN. Finally, a pick-and-place experiment of 120 µm microbeads is conducted to confirm the performance of the microgripper. The remote actuation and the simple fabrication and actuation of the proposed microgripper makes it a highly promising candidate to be utilized as a mobile microrobot for lab-on-chip applications.

Funder

EIPHI Graduate School

European Regional Development Fund

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering

Cited by 8 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. An Aluminum U-Shaped Electro-Thermally Actuated Microgripper: Simulation and Fabrication;2024 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS);2024-07-01

2. Design of Chevron Electrothermal Microgripper and its Prototyping Using SLM Based Additive Manufacturing;Transactions on Electrical and Electronic Materials;2024-06-01

3. An Aluminum Electro-Thermally Actuated Micro-Tweezer: Manufacturing and Characterization;Micromachines;2023-03-31

4. Design of Chevron Electrothermal Actuator for High Force Defense Applications;2023 7th International Conference on Computing Methodologies and Communication (ICCMC);2023-02-23

5. Thermomagnetic-Responsive Self-Folding Microgrippers for Improving Minimally Invasive Surgical Techniques and Biopsies;Molecules;2022-08-15

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