An On‐Demand Microrobot with Building Block Design for Flow Manipulation (Adv. Mater. Technol. 3/2023)

Loganathan, Dineshkumar; Hsieh, Chia‐Ling; Shi, Bo‐Er; Lu, Yueh‐Hsun; Chen, Chia Yuan

doi:10.1002/admt.202370014

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“…These mentioned parts of the microgripper, including the arms and the mobility component (referred to as the eye of the microgripper throughout this article), were made up of magnetic materials that were actuated externally through the custom‐built setup of eight electromagnetic coils (Figure 1B). The presented microgripper was fabricated by employing a building block technique [ 56 ] (A detailed fabrication procedure of the microgripper is provided in Figure S1, Supporting Information). The grasping and releasing functions of the microgripper were realized through the closing and opening of the two pairs of arms, respectively.…”

Section: Resultsmentioning

confidence: 99%

An Untethered Magnetic Microgripper for High‐Throughput Micromanipulation

Loganathan,

Chaung,

et al. 2024

Adv Materials Technologies

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Microgripper is a small‐miniaturized robotic device employed to maneuver sub‐millimeter‐sized particles or objects that are too small to be manipulated by human hands or conventional tools. The design and fabrication of the microgripper pose challenges due to the integration of actuation components into their structure. To address this challenge, the authors in this work presented a novel magnetic microgripper wherein the functions of the actuation components are executed by the two pairs of microgripper arms made up of magnetic material. A custom‐made electromagnetic system consisting of eight coils is employed to externally control these arms, enabling precise execution of gripping up to a maximum of two microparticles per working cycle. By varying the magnetic field strength from 20 to 120 mT, a wide range of gripper‐arms opening distance is achieved, spanning from 0.3 to 1.3 mm. Consequently, the microgripper is demonstrated to grip different sizes of microparticles ranging from 0.3 to 1.2 mm. As part of the motion control capabilities, the microgripper is demonstrated to orient and navigate across a 360‐degree range within the microfluidic environment. The presented microgripper holds promise for manipulating a wide variety of microparticle sizes and shapes, offering potential for high‐throughput applications

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Section: Resultsmentioning

confidence: 99%