Synergetic benefits of microfluidics using artificial cilia and ZnO/SnFe2O4 for the degradation of pollutants

Sahadevan, Vignesh; Loganathan, Dineshkumar; Chuang, Ying Hsin; Lo, Chang-fa; Chen, Chia‐Yun; Chen, Chia Yuan

doi:10.1016/j.matchemphys.2023.128068

Cited by 4 publications

(1 citation statement)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The arms (for grasping and releasing functions) and the eye (motion control of the microgripper) of the microgripper were filled with the mixtures (as mentioned above), while the rest of the sections in the microgripper were filled with PDMS material. The PDMS sections of the microgripper were composed of the mixtures of curing agents and pure PDMS (Sylgard 184, Dow Corning Corp., Midland, MI, USA) [61][62][63] with a weight ratio of 10:1. The magnetic sections (the arms and the eye of the microgripper) were composed of the mixtures of 5 μm neodymium-iron-boron magnetic particles (MQP-15-7, Magnequench International, Inc, Singapore) and PDMS with the proportion of 4:1.…”

Section: Methodsmentioning

confidence: 99%

An Untethered Magnetic Microgripper for High‐Throughput Micromanipulation

Loganathan,

Chaung,

et al. 2024

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

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

show abstract

Section: Methodsmentioning

confidence: 99%

An Untethered Magnetic Microgripper for High‐Throughput Micromanipulation

Loganathan,

Chaung,

et al. 2024

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

show abstract

A Control Strategy of Multiple Microrobots Using a Hybrid Electromagnetic System

Loganathan,

Ou,

Hsu

et al. 2024

Adv Materials Technologies

View full text Add to dashboard Cite

Magnetic microrobots are controlled to exhibit a wide range of motions, allowing them to navigate complex environments and perform multifunctional tasks with high precision. This work presents a novel hybrid electromagnetic actuation system by integrating two distinct conventional configurations, such as a paired‐coils electromagnetic disc (EMD) system and a distributed electromagnetic array coil (EAC) system. In order to ensure the effective functioning of the microrobot, its motion dynamics are thoroughly analyzed to identify the critical kinetic parameters. For demonstration purposes, first, a mixing task is performed by employing a single microrobot actuated with simultaneous motions. The mixing efficiency is observed to reach 83% within 30 s, in contrast to the efficiency of control of 45%. Second, a structural reconfiguration function is demonstrated by employing an independent control of two U‐shaped microrobots to form a new I‐shaped microrobot. Last, differentiated motion control of multiple magnetic pads is demonstrated, resulting in various 2D static formations in the shapes of numbers and alphabets. The presented results hold great promise for advancing the field of microrobotics by offering a novel solution for versatile microrobot motion controls.

show abstract

A Stepwise Control of Multiple Magnetic Millirobots for Flow Manipulation Applications

Loganathan,

Hsieh,

et al. 2024

Advanced Intelligent Systems

Self Cite

View full text Add to dashboard Cite

Small‐scale magnetic robots are extensively recognized as promising untethered devices that can be controlled externally for numerous microscale applications. This study is proposed to address the independent control of multiple magnetic millirobots using an array of electromagnetic coils. Herein, each of the fabricated magnetic millirobots is magnetized with a dissimilar magnetization profile. Further, these millirobots are independently controlled using the mentioned magnetization strategy in addition to the supply of controlled current to each electromagnetic coil. To explore the physics of this combined stepwise approach in controlling the millirobots, theoretical and numerical investigations are carried out that further ensure the practical significance for broad applications. For demonstration purposes, three different shear‐induced flow manipulation experiments, including the particle manipulation task, fluid color transition task, and micromixing task, are conducted using more than one millirobot with distinct motions. A maximum of three millirobots controlled with different motions are employed in the micromixing task, and further, it is observed to achieve nearly 80% mixing efficiency within 45 s. The presented work with the introduced actuation system and motion control strategies can strengthen the existing methods of small‐scale robots for various applications, particularly for tasks that demand multiple millirobots.

show abstract

Synergetic benefits of microfluidics using artificial cilia and ZnO/SnFe2O4 for the degradation of pollutants

Cited by 4 publications

References 56 publications

An Untethered Magnetic Microgripper for High‐Throughput Micromanipulation

An Untethered Magnetic Microgripper for High‐Throughput Micromanipulation

A Control Strategy of Multiple Microrobots Using a Hybrid Electromagnetic System

A Stepwise Control of Multiple Magnetic Millirobots for Flow Manipulation Applications

Contact Info

Product

Resources

About