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Universal Plasma Jet for Droplet Manipulation on a PDMS Surface towards Wall-Less Scaffolds. Polymers (Basel) 2021; 13:polym13081321. [PMID: 33920710 PMCID: PMC8073805 DOI: 10.3390/polym13081321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 12/24/2022] Open
Abstract
Droplet manipulation is important in the fields of engineering, biology, chemistry, and medicine. Many techniques, such as electrowetting and magnetic actuation, have been developed for droplet manipulation. However, the fabrication of the manipulation platform often takes a long time and requires well-trained skills. Here we proposed a novel method that can directly generate and manipulate droplets on a polymeric surface using a universal plasma jet. One of its greatest advantages is that the jet can tremendously reduce the time for the platform fabrication while it can still perform stable droplet manipulation with controllable droplet size and motion. There are two steps for the proposed method. First, the universal plasma jet is set in plasma mode for modifying the manipulation path for droplets. Second, the jet is switched to air-jet mode for droplet generation and manipulation. The jetted air separates and pushes droplets along the plasma-treated path for droplet generation and manipulation. According to the experimental results, the size of the droplet can be controlled by the treatment time in the first step, i.e., a shorter treatment time of plasma results in a smaller size of the droplet, and vice versa. The largest and the smallest sizes of the generated droplets in the results are about 6 µL and 0.1 µL, respectively. Infrared spectra of absorption on the PDMS surfaces with and without the plasma treatment are investigated by Fourier-transform infrared spectroscopy. Tests of generating and mixing two droplets on a PDMS surface are successfully achieved. The aging effect of plasma treatment for the proposed method is also discussed. The proposed method provides a simple, fast, and low-cost way to generate and manipulate droplets on a polymeric surface. The method is expected to be applied to droplet-based cell culture by manipulating droplets encapsulating living cells and towards wall-less scaffolds on a polymeric surface.
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Wang XM, Guo PF, Hu ZJ, Chen ML, Wang JH. DMSA-Functionalized Mesoporous Alumina with a High Capacity for Selective Isolation of Immunoglobulin G. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36286-36295. [PMID: 31491081 DOI: 10.1021/acsami.9b13718] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel dimercaptosuccinic acid-functionalized mesoporous alumina (DMSA-MA) is synthesized by the dicarboxylic acid groups of dimercaptosuccinic acid molecules coordinating to the Al3+ ions located in the mesostructure. The as-prepared DMSA-MA composites possess a large surface area of 91.17 m2/g as well as a uniform pore size and a high pore volume of 17.22 nm and 0.23 cm3/g, respectively. DMSA coating of mesostructures significantly enhanced their selectivity for glycoprotein adsorption through a powerful hydrophilic binding force, and the maximum adsorption capacity of immunoglobulin G (IgG) can reach 2298.6 mg g-1. The captured IgG could be lightly stripped from the DMSA-MA composites with an elution rate of 98.3% by using 0.5 wt % CTAB solution as the elution reagent. DMSA-MA is further employed as a sorbent for the enrichment of IgG heavy chain and light chain from human serum sample. SDS-PAGE assay results showed the obtained IgG with high purity compared to that of the standard solution of IgG.
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Affiliation(s)
- Xi-Ming Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Peng-Fei Guo
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Zheng-Jie Hu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Ming-Li Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences , Northeastern University , Box 332, Shenyang 110819 , China
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Levchenko I, Bazaka K, Keidar M, Xu S, Fang J. Hierarchical Multicomponent Inorganic Metamaterials: Intrinsically Driven Self-Assembly at the Nanoscale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1702226. [PMID: 29152907 DOI: 10.1002/adma.201702226] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/10/2017] [Indexed: 06/07/2023]
Abstract
Increasingly intricate in their composition and structural organization, hierarchical multicomponent metamaterials with nonlinear spatially reconfigurable functionalities challenge the intrinsic constraints of natural materials, revealing tremendous potential for the advancement of biochemistry, nanophotonics, and medicine. Recent breakthroughs in high-resolution nanofabrication utilizing ultranarrow, precisely controlled ion or laser beams have enabled assembly of architectures of unprecedented structural and functional complexity, yet costly, time- and energy-consuming high-resolution sequential techniques do not operate effectively at industry-required scale. Inspired by the fictional Baron Munchausen's fruitless attempt to pull himself up, it is demonstrated that metamaterials can undergo intrinsically driven self-assembly, metaphorically pulling themselves up into existence. These internal drivers hold a key to unlocking the potential of metamaterials and mapping a new direction for the large-area, cost-efficient self-organized fabrication of practical devices. A systematic exploration of these efforts is presently missing, and the driving forces governing the intrinsically driven self-assembly are yet to be fully understood. Here, recent progress in the self-organized formation and self-propelled growth of complex hierarchical multicomponent metamaterials is reviewed, with emphasis on key principles, salient features, and potential limitations of this family of approaches. Special stress is placed on self-assembly driven by plasma, current in liquid, ultrasonic, and similar highly energetic effects, which enable self-directed formation of metamaterials with unique properties and structures.
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Affiliation(s)
- Igor Levchenko
- Plasma Sources and Applications Centre, NIE, Nanyang Technological University, Singapore, 637616, Singapore
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Michael Keidar
- Mechanical and Aerospace Engineering, George Washington University, Washington, DC, 20052, USA
| | - Shuyan Xu
- Plasma Sources and Applications Centre, NIE, Nanyang Technological University, Singapore, 637616, Singapore
| | - Jinghua Fang
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, NSW 2007, Sydney, Australia
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Mocan T, Matea CT, Pop T, Mosteanu O, Buzoianu AD, Suciu S, Puia C, Zdrehus C, Iancu C, Mocan L. Carbon nanotubes as anti-bacterial agents. Cell Mol Life Sci 2017; 74:3467-3479. [PMID: 28536787 PMCID: PMC11107489 DOI: 10.1007/s00018-017-2532-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/19/2017] [Accepted: 04/27/2017] [Indexed: 01/01/2023]
Abstract
Multidrug-resistant bacterial infections that have evolved via natural selection have increased alarmingly at a global level. Thus, there is a strong need for the development of novel antibiotics for the treatment of these infections. Functionalized carbon nanotubes through their unique properties hold great promise in the fight against multidrug-resistant bacterial infections. This new family of nanovectors for therapeutic delivery proved to be innovative and efficient for the transport and cellular translocation of therapeutic molecules. The current review examines the latest progress in the antibacterial activity of carbon nanotubes and their composites.
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Affiliation(s)
- Teodora Mocan
- Department of Nanomedicine, "Octavian Fodor" Gastroenterology Institute, 19-21 Croitorilor Street, Cluj-Napoca, Romania
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 3-5 Clinicilor Street, Cluj-Napoca, Romania
| | - Cristian T Matea
- Department of Nanomedicine, "Octavian Fodor" Gastroenterology Institute, 19-21 Croitorilor Street, Cluj-Napoca, Romania
| | - Teodora Pop
- 3rd Gastroenterology Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, 19-21 Croitorilor Street, Cluj-Napoca, Romania
| | - Ofelia Mosteanu
- 3rd Gastroenterology Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, 19-21 Croitorilor Street, Cluj-Napoca, Romania
| | - Anca Dana Buzoianu
- Department of Clinical Pharmacology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 3-5 Clinicilor Street, Cluj-Napoca, Romania
| | - Soimita Suciu
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, 3-5 Clinicilor Street, Cluj-Napoca, Romania
| | - Cosmin Puia
- Department of Nanomedicine, "Octavian Fodor" Gastroenterology Institute, 19-21 Croitorilor Street, Cluj-Napoca, Romania
- 3rd Surgery Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, 19-21 Croitorilor Street, Cluj-Napoca, Romania
| | - Claudiu Zdrehus
- Department of Nanomedicine, "Octavian Fodor" Gastroenterology Institute, 19-21 Croitorilor Street, Cluj-Napoca, Romania
- 3rd Surgery Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, 19-21 Croitorilor Street, Cluj-Napoca, Romania
| | - Cornel Iancu
- Department of Nanomedicine, "Octavian Fodor" Gastroenterology Institute, 19-21 Croitorilor Street, Cluj-Napoca, Romania.
- 3rd Surgery Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, 19-21 Croitorilor Street, Cluj-Napoca, Romania.
| | - Lucian Mocan
- Department of Nanomedicine, "Octavian Fodor" Gastroenterology Institute, 19-21 Croitorilor Street, Cluj-Napoca, Romania.
- 3rd Surgery Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, 19-21 Croitorilor Street, Cluj-Napoca, Romania.
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