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Micromachines
Special Issues
Recent Advances in Magnetic Micro/Nano-Manipulation
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Recent Advances in Magnetic Micro/Nano-Manipulation

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A：Physics".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 2394

Special Issue Editors

Prof. Dr. Quanliang Cao

E-Mail Website
Guest Editor
Wuhan National High Magnetic Field Center & State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: magnetic soft robotics; magnetic separation; magnetic levitation; electromagnetic forming
Special Issues, Collections and Topics in MDPI journals
Dr. Shaowei Ouyang

E-Mail Website
Guest Editor
Wuhan National High Magnetic Field Center & State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: magnetic soft robotics; electromagnetic forming

Special Issue Information

Dear Colleagues,

The ability to manipulate micro/nano objects (such as cells, particles, and droplets) is of paramount importance for a wide range of applications. Over the past decades, researchers have made significant progress in developing various manipulation methods using different types of external fields, including electric, magnetic, optical, and acoustic fields. Among these methods, magnetic manipulation has garnered considerable attention due to its wireless nature, high controllability, and versatile forms of magnetic fields, making it a highly explored technology with promising applications in separation, mixing, assembly, and robotics. Despite the substantial advancements made in this field, there remains substantial scope for further development in terms of high-performance magnetic tools, multifunctional actuation strategies, and a deeper understanding of the manipulation process. As a result, we are delighted to announce this Special Issue, soliciting original research papers and review papers that delve into the applications, fundamentals, design, and underlying mechanisms of the magnetic manipulation of micro/nano objects. Submissions exploring analytical, numerical, and experimental analyses are all welcome. We look forward to receiving your submissions.

Prof. Dr. Quanliang Cao
Dr. Shaowei Ouyang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • magnetic micro/nano-manipulation
  • magnetic robotics
  • magnetic assembly
  • magnetic separation
  • magnetic mixing

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Published Papers (2 papers)

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Research

15 pages, 7964 KiB  
Article
Optimal Motion Control of a Capsule Endoscope in the Stomach Utilizing a Magnetic Navigation System with Dual Permanent Magnets
by Suhong Bae, Junhyoung Kwon, Jongyul Kim and Gunhee Jang
Micromachines 2024, 15(8), 1032; https://doi.org/10.3390/mi15081032 - 14 Aug 2024
Viewed by 960
Abstract
We propose a method to control the motion of a capsule endoscope (CE) in the stomach utilizing either a single external permanent magnet (EPM) or dual EPMs to extend the examination of the upper gastrointestinal tract. When utilizing the conventional magnetic navigational system [...] Read more.
We propose a method to control the motion of a capsule endoscope (CE) in the stomach utilizing either a single external permanent magnet (EPM) or dual EPMs to extend the examination of the upper gastrointestinal tract. When utilizing the conventional magnetic navigational system (MNS) with a single EPM to generate tilting and rotational motions of the CE, undesired translational motion of the CE may prevent accurate examination. We analyzed the motion of the CE by calculating the magnetic torque and magnetic force applied to the CE using the point-dipole approximation model. Using the proposed model, we propose a method to determine the optimal position and orientation of the EPM to generate tilting and rotational motions without undesired translational motion of the CE. Furthermore, we optimized the weight of dual EPMs to develop a lightweight MNS. We prototyped the proposed MNS and experimentally verified that the developed MNS can generate tilting and rotational motions of the CE without any translational motion. Full article
(This article belongs to the Special Issue Recent Advances in Magnetic Micro/Nano-Manipulation)
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11 pages, 3802 KiB  
Article
Stray Magnetic Field Variations and Micromagnetic Simulations: Models for Ni0.8Fe0.2 Disks Used for Microparticle Trapping
by Gregory B. Vieira, Eliza Howard, Prannoy Lankapalli, Iesha Phillips, Keith Hoffmeister and Jackson Holley
Micromachines 2024, 15(5), 567; https://doi.org/10.3390/mi15050567 - 26 Apr 2024
Viewed by 955
Abstract
Patterned micro-scale thin-film magnetic structures, in conjunction with weak (~few tens of Oe) applied magnetic fields, can create energy landscapes capable of trapping and transporting fluid-borne magnetic microparticles. These energy landscapes arise from magnetic field magnitude variations that arise in the vicinity of [...] Read more.
Patterned micro-scale thin-film magnetic structures, in conjunction with weak (~few tens of Oe) applied magnetic fields, can create energy landscapes capable of trapping and transporting fluid-borne magnetic microparticles. These energy landscapes arise from magnetic field magnitude variations that arise in the vicinity of the magnetic structures. In this study, we examine means of calculating magnetic fields in the local vicinity of permalloy (Ni0.8Fe0.2) microdisks in weak (~tens of Oe) external magnetic fields. To do this, we employ micromagnetic simulations and the resulting calculations of fields. Because field calculation from micromagnetic simulations is computationally time-intensive, we discuss a method for fitting simulated results to improve calculation speed. Resulting stray fields vary dramatically based on variations in micromagnetic simulations—vortex vs. non-vortex micromagnetic results—which can each appear despite identical simulation final conditions, resulting in field strengths that differ by about a factor of two. Full article
(This article belongs to the Special Issue Recent Advances in Magnetic Micro/Nano-Manipulation)
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