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Chen L, Guo X, Sun X, Zhang S, Wu J, Yu H, Zhang T, Cheng W, Shi Y, Pan L. Porous Structural Microfluidic Device for Biomedical Diagnosis: A Review. MICROMACHINES 2023; 14:547. [PMID: 36984956 PMCID: PMC10051279 DOI: 10.3390/mi14030547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Microfluidics has recently received more and more attention in applications such as biomedical, chemical and medicine. With the development of microelectronics technology as well as material science in recent years, microfluidic devices have made great progress. Porous structures as a discontinuous medium in which the special flow phenomena of fluids lead to their potential and special applications in microfluidics offer a unique way to develop completely new microfluidic chips. In this article, we firstly introduce the fabrication methods for porous structures of different materials. Then, the physical effects of microfluid flow in porous media and their related physical models are discussed. Finally, the state-of-the-art porous microfluidic chips and their applications in biomedicine are summarized, and we present the current problems and future directions in this field.
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Affiliation(s)
| | | | - Xidi Sun
- Correspondence: (X.S.); (Y.S.); (L.P.)
| | | | | | | | | | | | - Yi Shi
- Correspondence: (X.S.); (Y.S.); (L.P.)
| | - Lijia Pan
- Correspondence: (X.S.); (Y.S.); (L.P.)
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Lin X, Zhao X, Xu C, Wang L, Xia Y. Progress in the mechanical enhancement of hydrogels: Fabrication strategies and underlying mechanisms. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220154] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xuan Lin
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University Qingdao China
| | - Xianwei Zhao
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University Qingdao China
| | - Chongzhi Xu
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University Qingdao China
| | - Lili Wang
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University Qingdao China
| | - Yanzhi Xia
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University Qingdao China
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Ganesh K, Jung J, Woo Park J, Kim BS, Seo S. Effect of Substituents in Mussel-inspired Surface Primers on their Oxidation and Priming Efficiency. ChemistryOpen 2021; 10:852-859. [PMID: 34437767 PMCID: PMC8389193 DOI: 10.1002/open.202100158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/13/2021] [Indexed: 11/09/2022] Open
Abstract
Marine mussels contain an abundant catechol moiety, 3,4-dihydroxyphenylalanine (DOPA), in their interfacial foot proteins. DOPA contributes to both surface adhesion and bridging between the surface and overhead proteins (surface priming) by taking advantage of the unique redox properties of catechol. Inspired by the mussel surface priming mechanism, herein we synthesized a series of DOPA-mimetic analogs - a bifunctional group molecule, consisting of a catechol group and an acrylic group at the opposite ends. The surface primers with differently substituted (-COOH, -CH3 ) alkyl chains in the middle spacer were synthesized. Time-dependent oxidation and redox potentials of the surface primers were studied in an oxidizing environment to gain a better understanding of the mussel's redox chemistry. The thickness and degree of priming of the surface primers on silicon-based substrates were analyzed by ellipsometry and UV/Vis absorption spectroscopy. The post-reactivity of the acrylic groups of the primed layer was first visualized through a reaction with an acrylic group-reactive dye.
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Affiliation(s)
- Karuppasamy Ganesh
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, Republic of Korea
| | - Jaewon Jung
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, Republic of Korea
| | - Jun Woo Park
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, Republic of Korea
| | - Byeong-Su Kim
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sungbaek Seo
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang, 50463, Republic of Korea
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Shrivas K, Ghosale A, Bajpai P, Kant T, Dewangan K, Shankar R. Advances in flexible electronics and electrochemical sensors using conducting nanomaterials: A review. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104944] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Markvicka EJ, Bartlett MD, Huang X, Majidi C. An autonomously electrically self-healing liquid metal-elastomer composite for robust soft-matter robotics and electronics. NATURE MATERIALS 2018; 17:618-624. [PMID: 29784995 DOI: 10.1038/s41563-018-0084-7] [Citation(s) in RCA: 348] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 04/18/2018] [Indexed: 05/27/2023]
Abstract
Large-area stretchable electronics are critical for progress in wearable computing, soft robotics and inflatable structures. Recent efforts have focused on engineering electronics from soft materials-elastomers, polyelectrolyte gels and liquid metal. While these materials enable elastic compliance and deformability, they are vulnerable to tearing, puncture and other mechanical damage modes that cause electrical failure. Here, we introduce a material architecture for soft and highly deformable circuit interconnects that are electromechanically stable under typical loading conditions, while exhibiting uncompromising resilience to mechanical damage. The material is composed of liquid metal droplets suspended in a soft elastomer; when damaged, the droplets rupture to form new connections with neighbours and re-route electrical signals without interruption. Since self-healing occurs spontaneously, these materials do not require manual repair or external heat. We demonstrate this unprecedented electronic robustness in a self-repairing digital counter and self-healing soft robotic quadruped that continue to function after significant damage.
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Affiliation(s)
- Eric J Markvicka
- Integrated Soft Materials Lab, Carnegie Mellon University, Pittsburgh, PA, USA
- Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, USA
| | | | - Xiaonan Huang
- Integrated Soft Materials Lab, Carnegie Mellon University, Pittsburgh, PA, USA
- Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Carmel Majidi
- Integrated Soft Materials Lab, Carnegie Mellon University, Pittsburgh, PA, USA.
- Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, USA.
- Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA.
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Dynamic Magnetic Responsive Wall Array with Droplet Shedding-off Properties. Sci Rep 2015; 5:11209. [PMID: 26061176 PMCID: PMC4462108 DOI: 10.1038/srep11209] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 05/19/2015] [Indexed: 11/25/2022] Open
Abstract
Directional control of droplets on a surface is an important issue for tasks of long-range liquid-transport, self-cleaning and water repellency. However, it is still challenging to control the structure motions in orientations so as to control the shedding-off of droplets. Herein, we report a novel dynamic magnetic responsive wall (DMRW) array on PDMS (polydimethylsiloxane) -based surface. The walls can easily tilt through the effect of the external magnet because of the magnetic material in the DMRW. The droplets can be shed off directionally on the surface. Particularly, with the shape recovery and flexible properties, it achieves simultaneous control of the tilt angles (0-60°) of DMRW for shedding-off of droplets with different volumes (1-15 μL) under magnetic action on DMRW. The mechanism of droplet shedding-off on DMRW is elucidated by theory of interfaces. It offers an insight into design of dynamic interface for water repellency. This strategy realizes the preparation of multifunctional, tunable and directional drive functions.
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Bartlett MD, Crosby AJ. High capacity, easy release adhesives from renewable materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:3405-3409. [PMID: 24504650 DOI: 10.1002/adma.201305593] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 12/15/2013] [Indexed: 06/03/2023]
Abstract
Reversible adhesives composed of renewable materials are presented which achieve high force capacities (810 N) while maintaining easy release (∼ 0.25 N) and reusability. These simple, non-tacky adhesives consist of natural rubber impregnated into stiff natural fiber fabrics, including cotton, hemp, and jute. This versatile approach enables a clear method for designs of environmentally-responsible, reversible adhesives for a wide variety of applications.
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Affiliation(s)
- Michael D Bartlett
- Polymer Science and Engineering Department, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
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Pendergraph SA, Bartlett MD, Carter KR, Crosby AJ. Enhancing adhesion of elastomeric composites through facile patterning of surface discontinuities. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6845-6850. [PMID: 24730369 DOI: 10.1021/am5006546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Patterning interfaces can provide enhanced adhesion over a projected area. However, careful consideration of the material properties and geometry must be applied to provide successful reversible adhesives. We present a simple method to use patterned, elastomeric fabric composites to enhance the shear adhesion strength by nearly 40% compared to a non-patterned sample. We describe how this enhancement depends on the pattern geometry, the velocity dependence of the adhesive materials, and the controlled displacement rate applied to the interface. Through these observations, we discuss strategies for improving reversible adhesives.
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Affiliation(s)
- Samuel A Pendergraph
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003-9265, United States
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