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Ali A, Kim H, Torati SR, Kang Y, Reddy V, Kim K, Yoon J, Lim B, Kim C. Magnetic Lateral Ladder for Unidirectional Transport of Microrobots: Design Principles and Potential Applications of Cells-on-Chip. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305528. [PMID: 37845030 DOI: 10.1002/smll.202305528] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/23/2023] [Indexed: 10/18/2023]
Abstract
Functionalized microrobots, which are directionally manipulated in a controlled and precise manner for specific tasks, face challenges. However, magnetic field-based controls constrain all microrobots to move in a coordinated manner, limiting their functions and independent behaviors. This article presents a design principle for achieving unidirectional microrobot transport using an asymmetric magnetic texture in the shape of a lateral ladder, which the authors call the "railway track." An asymmetric magnetic energy distribution along the axis allows for the continuous movement of microrobots in a fixed direction regardless of the direction of the magnetic field rotation. The authors demonstrated precise control and simple utilization of this method. Specifically, by placing magnetic textures with different directionalities, an integrated cell/particle collector can collect microrobots distributed in a large area and move them along a complex trajectory to a predetermined location. The authors can leverage the versatile capabilities offered by this texture concept, including hierarchical isolation, switchable collection, programmable pairing, selective drug-response test, and local fluid mixing for target objects. The results demonstrate the importance of microrobot directionality in achieving complex individual control. This novel concept represents significant advancement over conventional magnetic field-based control technology and paves the way for further research in biofunctionalized microrobotics.
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Affiliation(s)
- Abbas Ali
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Hyeonseol Kim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Sri Ramulu Torati
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
- Center for Bioelectronics, Old Dominion University, Norfolk, VA, 23508, USA
| | - Yumin Kang
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Venu Reddy
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
- Nanotechnology Research Center, SRKR Engineering College, Bhimavaram, Andhra Pradesh, 534204, India
| | - Keonmok Kim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Jonghwan Yoon
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - Byeonghwa Lim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
| | - CheolGi Kim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea
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Abedini-Nassab R, Sadeghidelouei N, Shields Iv CW. Magnetophoretic circuits: A review of device designs and implementation for precise single-cell manipulation. Anal Chim Acta 2023; 1272:341425. [PMID: 37355317 PMCID: PMC10317203 DOI: 10.1016/j.aca.2023.341425] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/18/2023] [Accepted: 05/24/2023] [Indexed: 06/26/2023]
Abstract
Lab-on-a-chip tools have played a pivotal role in advancing modern biology and medicine. A key goal in this field is to precisely transport single particles and cells to specific locations on a chip for quantitative analysis. To address this large and growing need, magnetophoretic circuits have been developed in the last decade to manipulate a large number of single bioparticles in a parallel and highly controlled manner. Inspired by electrical circuits, magnetophoretic circuits are composed of passive and active circuit elements to offer commensurate levels of control and automation for transporting individual bioparticles. These specifications make them unique compared to other technologies in addressing crucial bioanalytical applications and answering fundamental questions buried in highly heterogeneous cell populations. In this comprehensive review, we describe key theoretical considerations for manufacturing and simulating magnetophoretic circuits. We provide a detailed tutorial for operating magnetophoretic devices containing different circuit elements (e.g., conductors, diodes, capacitors, and transistors). Finally, we provide a critical comparison of the utility of these devices to other microchip-based platforms for cellular manipulation, and discuss how they may address unmet needs in single-cell biology and medicine.
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Affiliation(s)
- Roozbeh Abedini-Nassab
- Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran, P.O. Box: 14115-111, Iran.
| | - Negar Sadeghidelouei
- Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran, P.O. Box: 14115-111, Iran
| | - C Wyatt Shields Iv
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, 80303, United States
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Gharib G, Bütün İ, Muganlı Z, Kozalak G, Namlı İ, Sarraf SS, Ahmadi VE, Toyran E, van Wijnen AJ, Koşar A. Biomedical Applications of Microfluidic Devices: A Review. BIOSENSORS 2022; 12:bios12111023. [PMID: 36421141 PMCID: PMC9688231 DOI: 10.3390/bios12111023] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/30/2022] [Accepted: 11/08/2022] [Indexed: 05/26/2023]
Abstract
Both passive and active microfluidic chips are used in many biomedical and chemical applications to support fluid mixing, particle manipulations, and signal detection. Passive microfluidic devices are geometry-dependent, and their uses are rather limited. Active microfluidic devices include sensors or detectors that transduce chemical, biological, and physical changes into electrical or optical signals. Also, they are transduction devices that detect biological and chemical changes in biomedical applications, and they are highly versatile microfluidic tools for disease diagnosis and organ modeling. This review provides a comprehensive overview of the significant advances that have been made in the development of microfluidics devices. We will discuss the function of microfluidic devices as micromixers or as sorters of cells and substances (e.g., microfiltration, flow or displacement, and trapping). Microfluidic devices are fabricated using a range of techniques, including molding, etching, three-dimensional printing, and nanofabrication. Their broad utility lies in the detection of diagnostic biomarkers and organ-on-chip approaches that permit disease modeling in cancer, as well as uses in neurological, cardiovascular, hepatic, and pulmonary diseases. Biosensor applications allow for point-of-care testing, using assays based on enzymes, nanozymes, antibodies, or nucleic acids (DNA or RNA). An anticipated development in the field includes the optimization of techniques for the fabrication of microfluidic devices using biocompatible materials. These developments will increase biomedical versatility, reduce diagnostic costs, and accelerate diagnosis time of microfluidics technology.
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Affiliation(s)
- Ghazaleh Gharib
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
- Sabanci University Nanotechnology Research and Application Centre (SUNUM), Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - İsmail Bütün
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | - Zülâl Muganlı
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | - Gül Kozalak
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - İlayda Namlı
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | | | | | - Erçil Toyran
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
| | - Andre J. van Wijnen
- Department of Biochemistry, University of Vermont, 89 Beaumont Avenue, Burlington, VT 05405, USA
| | - Ali Koşar
- Faculty of Engineering and Natural Science, Sabanci University, Istanbul 34956, Turkey
- Sabanci University Nanotechnology Research and Application Centre (SUNUM), Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano Diagnostics (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
- Turkish Academy of Sciences (TÜBA), Çankaya, Ankara 06700, Turkey
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Kim H, Kang Y, Lim B, Kim K, Yoon J, Ali A, Torati SR, Kim C. Tailoring matter orbitals mediated using a nanoscale topographic interface for versatile colloidal current devices. MATERIALS HORIZONS 2022; 9:2353-2363. [PMID: 35792087 DOI: 10.1039/d2mh00523a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Conventional micro-particle manipulation technologies have been used for various biomedical applications using dynamics on a plane without vertical movement. In this case, irregular topographic structures on surfaces could be a factor that causes the failure of the intended control. Here, we demonstrated a novel colloidal particle manipulation mediated by the topographic effect generated by the "micro hill" and "surface gradient" around a micro-magnet. The magnetic landscape, matter orbital, created by periodically arranged circular micro-magnets, induces a symmetric orbit of magnetic particle flow under a rotating magnetic field. The topographic effect can break this symmetry of the energy distribution by controlling the distance between the source of the driving force and target particles by several nanometers on the surface morphology. The origin symmetric orbit of colloidal flow can be distorted by modifying the symmetry in the energy landscape at the switching point without changing the driving force. The enhancement of the magnetic effect of the micro-magnet array can lead to the recovery of the symmetry of the orbit. Also, this effect on the surfaces of on-chip-based devices configured by symmetry control was demonstrated for selective manipulation, trapping, recovery, and altering the direction using a time-dependent magnetic field. Hence, the developed technique could be used in various precise lab-on-a-chip applications, including where the topographic effect is required as an additional variable without affecting the existing control method.
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Affiliation(s)
- Hyeonseol Kim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - Yumin Kang
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - Byeonghwa Lim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - Keonmok Kim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - Jonghwan Yoon
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - Abbas Ali
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - Sri Ramulu Torati
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
| | - CheolGi Kim
- Department of Physics and Chemistry, DGIST, Daegu, 42988, Republic of Korea.
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Abedini-Nassab R, Aldaghi Z, Dan Y. Magnetophoretic capacitors for storing single particles and magnetized cells in microfluidic devices. BIOMICROFLUIDICS 2022; 16:044110. [PMID: 35992640 PMCID: PMC9385221 DOI: 10.1063/5.0101907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Precise positioning of magnetic particles and magnetized cells in lab-on-a-chip systems has attracted broad attention. Recently, drawing inspiration from electrical circuits, we have demonstrated a magnetic particle transport platform composed of patterned magnetic thin films in a microfluidic environment, which accurately moves the particles and single cells to specific spots, called capacitors. However, we have made no prior attempts to optimize the capacitor geometry. Here, we carefully analyze various design parameters and their effect on capacitor operation. We run simulations based on finite element methods and stochastic numerical analysis using our semi-analytical model. We then perform the required experiments to study the loading efficiency of capacitors with different geometries for magnetic particles of multiple sizes. Our experimental results agree well with the design criteria we developed based on our simulation results. We also show the capability of designed capacitors in storing the magnetically labeled cells and illustrate using them in a pilot drug screening application. These results are directly applicable to the design of robust platforms capable of transporting and assembling a large number of single particles and single cells in arrays, which are useful in the emerging field of single-cell analysis.
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Affiliation(s)
- Roozbeh Abedini-Nassab
- Faculty of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115-111, Tehran, Iran
| | - Zahra Aldaghi
- Department of Biomedical Engineering, University of Neyshabur, Neyshabur, Iran
| | - Yaping Dan
- University of Michigan—Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China
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Abedini-Nassab R, Shourabi R. High-throughput precise particle transport at single-particle resolution in a three-dimensional magnetic field for highly sensitive bio-detection. Sci Rep 2022; 12:6380. [PMID: 35430583 PMCID: PMC9013386 DOI: 10.1038/s41598-022-10122-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 03/30/2022] [Indexed: 11/16/2022] Open
Abstract
Precise manipulation of microparticles have fundamental applications in the fields of lab-on-a-chip and biomedical engineering. Here, for the first time, we propose a fully operational microfluidic chip equipped with thin magnetic films composed of straight tracks and bends which precisely transports numerous single-particles in the size range of ~ 2.8–20 µm simultaneously, to certain points, synced with the general external three-axial magnetic field. The uniqueness of this design arises from the introduced vertical bias field that provides a repulsion force between the particles and prevents unwanted particle cluster formation, which is a challenge in devices operating in two-dimensional fields. Furthermore, the chip operates as an accurate sensor and detects low levels of proteins and DNA fragments, being captured by the ligand-functionalized magnetic beads, while lowering the background noise by excluding the unwanted bead pairs seen in the previous works. The image-processing detection method in this work allows detection at the single-pair resolution, increasing the sensitivity. The proposed device offers high-throughput particle transport and ultra-sensitive bio-detection in a highly parallel manner at single-particle resolution. It can also operate as a robust single-cell analysis platform for manipulating magnetized single-cells and assembling them in large arrays, with important applications in biology.
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Abedini-Nassab R, Pouryosef Miandoab M, Şaşmaz M. Microfluidic Synthesis, Control, and Sensing of Magnetic Nanoparticles: A Review. MICROMACHINES 2021; 12:768. [PMID: 34210058 PMCID: PMC8306075 DOI: 10.3390/mi12070768] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Accepted: 06/27/2021] [Indexed: 02/06/2023]
Abstract
Magnetic nanoparticles have attracted significant attention in various disciplines, including engineering and medicine. Microfluidic chips and lab-on-a-chip devices, with precise control over small volumes of fluids and tiny particles, are appropriate tools for the synthesis, manipulation, and evaluation of nanoparticles. Moreover, the controllability and automation offered by the microfluidic chips in combination with the unique capabilities of the magnetic nanoparticles and their ability to be remotely controlled and detected, have recently provided tremendous advances in biotechnology. In particular, microfluidic chips with magnetic nanoparticles serve as sensitive, high throughput, and portable devices for contactless detecting and manipulating DNAs, RNAs, living cells, and viruses. In this work, we review recent fundamental advances in the field with a focus on biomedical applications. First, we study novel microfluidic-based methods in synthesizing magnetic nanoparticles as well as microparticles encapsulating them. We review both continues-flow and droplet-based microreactors, including the ones based on the cross-flow, co-flow, and flow-focusing methods. Then, we investigate the microfluidic-based methods for manipulating tiny magnetic particles. These manipulation techniques include the ones based on external magnets, embedded micro-coils, and magnetic thin films. Finally, we review techniques invented for the detection and magnetic measurement of magnetic nanoparticles and magnetically labeled bioparticles. We include the advances in anisotropic magnetoresistive, giant magnetoresistive, tunneling magnetoresistive, and magnetorelaxometry sensors. Overall, this review covers a wide range of the field uniquely and provides essential information for designing "lab-on-a-chip" systems for synthesizing magnetic nanoparticles, labeling bioparticles with them, and sorting and detecting them on a single chip.
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Affiliation(s)
- Roozbeh Abedini-Nassab
- Department of Biomedical Engineering, University of Neyshabur, Neyshabur 9319774446, Iran
| | | | - Merivan Şaşmaz
- Department of Electrical and Electronic Engineering, Faculty of Engineering, Adiyaman University, Adiyaman 02040, Turkey;
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