1
|
Gerchman D, Acunha Ferrari PH, Baranov O, Levchenko I, Takimi AS, Bazaka K. One-step rapid formation of wrinkled fractal antibiofouling coatings from environmentally friendly, waste-derived terpenes. J Colloid Interface Sci 2024; 668:319-334. [PMID: 38678887 DOI: 10.1016/j.jcis.2024.04.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/26/2024] [Accepted: 04/08/2024] [Indexed: 05/01/2024]
Abstract
Wrinkled coatings are a potential drug-free method for mitigating bacterial attachment and biofilm formation on materials such as medical and food grade steel. However, their fabrication typically requires multiple steps and often the use of a stimulus to induce wrinkle formation. Here, we report a facile plasma-based method for rapid fabrication of thin (<250 nm) polymer coatings from a single environmentally friendly precursor, where wrinkle formation and fractal pattern development are controlled solely by varying the deposition time from 3 s to 60 s. We propose a mechanism behind the observed in situ development of wrinkles in plasma, as well as demonstrate how introducing specific topographical features on the surface of the substrata can result int the formation of even more complex, ordered wrinkle patterns arising from the non-uniformity of plasma when in contact with structured surfaces. Thus-fabricated wrinkled surfaces show good adhesion to substrate and an antifouling activity that is not observed in the equivalent smooth coatings and hence is attributed to the specific pattern of wrinkles.
Collapse
Affiliation(s)
- Daniel Gerchman
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Oleg Baranov
- Department of Theoretical Mechanics, Engineering and Robomechanical Systems, National Aerospace University, Kharkiv 61070, Ukraine; Department of Gaseous Electronics, Jožef Stefan Institute, Ljubljana 1000, Slovenia, EU
| | - Igor Levchenko
- Plasma Sources and Application Center, NIE, Nanyang Technological University, Singapore 639798, Singapore.
| | | | - Kateryna Bazaka
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
| |
Collapse
|
2
|
Levchenko L, Xu S, Baranov O, Bazaka K. How to Survive at Point Nemo? Fischer-Tropsch, Artificial Photosynthesis, and Plasma Catalysis for Sustainable Energy at Isolated Habitats. Glob Chall 2024; 8:2300086. [PMID: 38223892 PMCID: PMC10784207 DOI: 10.1002/gch2.202300086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 10/19/2023] [Indexed: 01/16/2024]
Abstract
Inhospitable, inaccessible, and extremely remote alike the famed pole of inaccessibility, aka Point Nemo, the isolated locations in deserts, at sea, or in outer space are difficult for humans to settle, let alone to thrive in. Yet, they present a unique set of opportunities for science, economy, and geopolitics that are difficult to ignore. One of the critical challenges for settlers is the stable supply of energy both to sustain a reasonable quality of life, as well as to take advantage of the local opportunities presented by the remote environment, e.g., abundance of a particular resource. The possible solutions to this challenge are heavily constrained by the difficulty and prohibitive cost of transportation to and from such a habitat (e.g., a lunar or Martian base). In this essay, the advantages and possible challenges of integrating Fischer-Tropsch, artificial photosynthesis, and plasma catalysis into a robust, scalable, and efficient self-contained system for energy harvesting, storage, and utilization are explored.
Collapse
Affiliation(s)
- lgor Levchenko
- School of Engineering, College of Engineering, Computing and CyberneticsThe Australian National UniversityCanberraACT2600Australia
- Plasma Sources and Application Centre, NIENanyang Technological UniversitySingapore637616Singapore
| | - Shuyan Xu
- Plasma Sources and Application Centre, NIENanyang Technological UniversitySingapore637616Singapore
| | - Oleg Baranov
- Department of Theoretical MechanicsEngineering and Robomechanical SystemsNational Aerospace UniversityKharkiv61070Ukraine
- Department of Gaseous ElectronicsJozef Stefan InstituteLjubljana1000Slovenia
| | - Kateryna Bazaka
- School of Engineering, College of Engineering, Computing and CyberneticsThe Australian National UniversityCanberraACT2600Australia
| |
Collapse
|
3
|
Prasad K, Sasi S, Weerasinghe J, Levchenko I, Bazaka K. Enhanced Antimicrobial Activity through Synergistic Effects of Cold Atmospheric Plasma and Plant Secondary Metabolites: Opportunities and Challenges. Molecules 2023; 28:7481. [PMID: 38005203 PMCID: PMC10673009 DOI: 10.3390/molecules28227481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
The emergence of antibiotic resistant microorganisms possesses a great threat to human health and the environment. Considering the exponential increase in the spread of antibiotic resistant microorganisms, it would be prudent to consider the use of alternative antimicrobial agents or therapies. Only a sustainable, sustained, determined, and coordinated international effort will provide the solutions needed for the future. Plant secondary metabolites show bactericidal and bacteriostatic activity similar to that of conventional antibiotics. However, to effectively eliminate infection, secondary metabolites may need to be activated by heat treatment or combined with other therapies. Cold atmospheric plasma therapy is yet another novel approach that has proven antimicrobial effects. In this review, we explore the physiochemical mechanisms that may give rise to the improved antimicrobial activity of secondary metabolites when combined with cold atmospheric plasma therapy.
Collapse
Affiliation(s)
- Karthika Prasad
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia; (S.S.); (J.W.); (I.L.)
| | - Syamlal Sasi
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia; (S.S.); (J.W.); (I.L.)
| | - Janith Weerasinghe
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia; (S.S.); (J.W.); (I.L.)
| | - Igor Levchenko
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia; (S.S.); (J.W.); (I.L.)
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, Singapore 637616, Singapore
| | - Kateryna Bazaka
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia; (S.S.); (J.W.); (I.L.)
| |
Collapse
|
4
|
Weerasinghe J, Prasad K, Mathew J, Trifoni E, Baranov O, Levchenko I, Bazaka K. Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites. Nanomaterials (Basel) 2023; 13:nano13111763. [PMID: 37299666 DOI: 10.3390/nano13111763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/10/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Recent advancements in space technology and reduced launching cost led companies, defence and government organisations to turn their attention to low Earth orbit (LEO) and very low Earth orbit (VLEO) satellites, for they offer significant advantages over other types of spacecraft and present an attractive solution for observation, communication and other tasks. However, keeping satellites in LEO and VLEO presents a unique set of challenges, in addition to those typically associated with exposure to space environment such as damage from space debris, thermal fluctuations, radiation and thermal management in vacuum. The structural and functional elements of LEO and especially VLEO satellites are significantly affected by residual atmosphere and, in particular, atomic oxygen (AO). At VLEO, the remaining atmosphere is dense enough to create significant drag and quicky de-orbit satellites; thus, thrusters are needed to keep them on a stable orbit. Atomic oxygen-induced material erosion is another key challenge to overcome during the design phase of LEO and VLEO spacecraft. This review covered the corrosion interactions between the satellites and the low orbit environment, and how it can be minimised through the use of carbon-based nanomaterials and their composites. The review also discussed key mechanisms and challenges underpinning material design and fabrication, and it outlined the current research in this area.
Collapse
Affiliation(s)
- Janith Weerasinghe
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
| | - Karthika Prasad
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
| | - Joice Mathew
- Advanced Instrumentation and Technology Centre, Research School of Astronomy & Astrophysics, ANU College of Science, The Australian National University, Canberra, ACT 2600, Australia
| | - Eduardo Trifoni
- Advanced Instrumentation and Technology Centre, Research School of Astronomy & Astrophysics, ANU College of Science, The Australian National University, Canberra, ACT 2600, Australia
| | - Oleg Baranov
- Department of Theoretical Mechanics, Engineering and Robomechanical Systems, National Aerospace University, 61070 Kharkiv, Ukraine
- Department of Gaseous Electronics, Jozef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Igor Levchenko
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, Singapore 637616, Singapore
| | - Kateryna Bazaka
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
| |
Collapse
|
5
|
Baranov O, Bazaka K, Belmonte T, Riccardi C, Roman HE, Mohandas M, Xu S, Cvelbar U, Levchenko I. Recent innovations in the technology and applications of low-dimensional CuO nanostructures for sensing, energy and catalysis. Nanoscale Horiz 2023; 8:568-602. [PMID: 36928662 DOI: 10.1039/d2nh00546h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Low-dimensional copper oxide nanostructures are very promising building blocks for various functional materials targeting high-demanded applications, including energy harvesting and transformation systems, sensing and catalysis. Featuring a very high surface-to-volume ratio and high chemical reactivity, these materials have attracted wide interest from researchers. Currently, extensive research on the fabrication and applications of copper oxide nanostructures ensures the fast progression of this technology. In this article we briefly outline some of the most recent, mostly within the past two years, innovations in well-established fabrication technologies, including oxygen plasma-based methods, self-assembly and electric-field assisted growth, electrospinning and thermal oxidation approaches. Recent progress in several key types of leading-edge applications of CuO nanostructures, mostly for energy, sensing and catalysis, is also reviewed. Besides, we briefly outline and stress novel insights into the effect of various process parameters on the growth of low-dimensional copper oxide nanostructures, such as the heating rate, oxygen flow, and roughness of the substrates. These insights play a key role in establishing links between the structure, properties and performance of the nanomaterials, as well as finding the cost-and-benefit balance for techniques that are capable of fabricating low-dimensional CuO with the desired properties and facilitating their integration into more intricate material architectures and devices without the loss of original properties and function.
Collapse
Affiliation(s)
- Oleg Baranov
- Department of Theoretical Mechanics, Engineering and Robomechanical Systems, National Aerospace University, Kharkiv 61070, Ukraine.
- Department of Gaseous Electronics, Jozef Stefan Institute, Ljubljana 1000, Slovenia
| | - Kateryna Bazaka
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | | | - Claudia Riccardi
- Dipartimento di Fisica "Giuseppe Occhialini", Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, I20126 Milan, Italy
| | - H Eduardo Roman
- Dipartimento di Fisica "Giuseppe Occhialini", Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, I20126 Milan, Italy
| | - Mandhakini Mohandas
- Center for Nanoscience and Technology, Anna University, Chennai, 600 025, India
| | - Shuyan Xu
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, 637616, Singapore.
| | - Uroš Cvelbar
- Department of Gaseous Electronics, Jozef Stefan Institute, Ljubljana 1000, Slovenia
| | - Igor Levchenko
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, 637616, Singapore.
| |
Collapse
|
6
|
Lekshmi GS, Bazaka K, Ramakrishna S, Kumaravel V. Microbial electrosynthesis: carbonaceous electrode materials for CO 2 conversion. Mater Horiz 2023; 10:292-312. [PMID: 36524420 DOI: 10.1039/d2mh01178f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Microbial electrosynthesis (MES) is a sustainable approach to address greenhouse gas (GHG) emissions using anthropogenic carbon dioxide (CO2) as a building block to create clean fuels and highly valuable chemicals. The efficiency of MES-based CO2 conversion is closely related to the performance of electrode material and, in particular, the cathode for which carbonaceous materials are frequently used. Compared to expensive metal electrodes, carbonaceous materials are biocompatible with a high specific surface area, wide range of possible morphologies, and excellent chemical stability, and their use can maximize the growth of bacteria and enhance electron transfer rates. Examples include MES cathodes based on carbon nanotubes, graphene, graphene oxide, graphite, graphite felt, graphitic carbon nitride (g-C3N4), activated carbon, carbon felt, carbon dots, carbon fibers, carbon brushes, carbon cloth, reticulated vitreous carbon foam, MXenes, and biochar. Herein, we review the state-of-the-art MES, including thermodynamic and kinetic processes that underpin MES-based CO2 conversion, as well as the impact of reactor type and configuration, selection of biocompatible electrolytes, product selectivity, and the use of novel methods for stimulating biomass accumulation. Specific emphasis is placed on carbonaceous electrode materials, their 3D bioprinting and surface features, and the use of waste-derived carbon or biochar as an outstanding material for further improving the environmental conditions of CO2 conversion using carbon-hungry microbes and as a step toward the circular economy. MES would be an outstanding technique to develop rocket fuels and bioderived products using CO2 in the atmosphere for the Mars mission.
Collapse
Affiliation(s)
- G S Lekshmi
- International Centre for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Lodz 90-924, Poland.
| | - Kateryna Bazaka
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Centre for Nanofibers and Nanotechnology, National University of Singapore, 119077, Singapore
| | - Vignesh Kumaravel
- International Centre for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, Lodz 90-924, Poland.
| |
Collapse
|
7
|
Sasi S, Prasad K, Weerasinghe J, Bazaka O, Ivanova EP, Levchenko I, Bazaka K. Plasma for aquaponics. Trends Biotechnol 2023; 41:46-62. [PMID: 36085105 DOI: 10.1016/j.tibtech.2022.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 07/15/2022] [Accepted: 08/09/2022] [Indexed: 12/27/2022]
Abstract
Global environmental, social, and economic challenges call for innovative solutions to food production. Current food production systems require advances beyond traditional paradigms, acknowledging the complexity arising from sustainability and a present lack of awareness about technologies that may help limit, for example, loss of nutrients from soil. Aquaponics, a closed-loop system that combines aquaculture with hydroponics, is a step towards the more efficient management of scarce water, land, and nutrient resources. However, its large-scale use is currently limited by several significant challenges of maintaining desirable water chemistry and pH, managing infections in fish and plants, and increasing productivity efficiently, economically, and sustainably. This paper investigates the opportunities presented by plasma technologies in meeting these challenges, potentially opening new pathways for sustainability in food production.
Collapse
Affiliation(s)
- Syamlal Sasi
- Product Development, BudMore Pty Ltd, Brisbane, QLD 4000, Australia; School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia
| | - Karthika Prasad
- Product Development, BudMore Pty Ltd, Brisbane, QLD 4000, Australia; School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia.
| | - Janith Weerasinghe
- Product Development, BudMore Pty Ltd, Brisbane, QLD 4000, Australia; School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Olha Bazaka
- School of Science, RMIT University, PO Box 2476, Melbourne, Vic 3001, Australia
| | - Elena P Ivanova
- School of Science, RMIT University, PO Box 2476, Melbourne, Vic 3001, Australia
| | - Igor Levchenko
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University, Singapore 637616
| | - Kateryna Bazaka
- School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia; School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| |
Collapse
|
8
|
Ramasamy T, Satheesh LG, Selvaraj V, Bazaka O, Levchenko I, Bazaka K, Mandhakini M. Spinel CoFe 2O 4 Nanoflakes: A Path to Enhance Energy Generation and Environmental Remediation Potential of Waste-Derived rGO. Nanomaterials (Basel) 2022; 12:3822. [PMID: 36364598 PMCID: PMC9657719 DOI: 10.3390/nano12213822] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/10/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Carbon nanomaterials derived from agricultural waste streams present an exciting material platform that hits multiple sustainability targets by reducing waste entering landfill, and enabling clean energy and environmental remediation technologies. In this work, the energy and photocatalytic properties of reduced graphene oxide fabricated from coconut coir using a simple reduction method using ferrocene are substantially improved by introducing metallic oxides flakes. A series of cobalt ferrite rGO/CoFe2O4 nanocomposites were assembled using a simple soft bubble self-templating assembly, and their potential for clean energy applications confirmed. The transmission electron microscopy images revealed the uniform dispersion of the metal oxide on the rGO sheets. The functional group of the as synthesized metal oxide and the rGO nanocomposites, and its individual constituents, were identified through the FTIR and XPS studies, respectively. The composite materials showed higher specific capacitance then the pure materials, with rGO spinal metal oxide nanocomposites showing maximum specific capacitance of 396 F/g at 1 A/g. Furthermore, the hybrid super capacitor exhibits the excellent cyclic stability 2000 cycles with 95.6% retention. The photocatalytic properties of the synthesized rGO nanocomposites were analyzed with the help of malachite green dye. For pure metal oxide, the degradation rate was only around 65% within 120 min, while for rGO metal oxide nanocomposites, more than 80% of MG were degraded.
Collapse
Affiliation(s)
- Tamilselvi Ramasamy
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India
| | - Lekshmi Gopakumari Satheesh
- International Centre for Research on Innovative Biobased Materials (ICRI-BioM)-International Research Agenda, Lodz University of Technology, 90-924 Lodz, Poland
| | - Vaithilingam Selvaraj
- Nanotech Research Lab, Department of Chemistry, University College of Engineering Villupuram (a Constituent College of Anna University, Chennai-25), Villupuram 605103, India
| | - Olha Bazaka
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia
| | - Igor Levchenko
- Plasma Sources and Application Center, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore
| | - Kateryna Bazaka
- School of Engineering, Australian National University, Canberra, ACT 2600, Australia
| | - Mohandas Mandhakini
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India
| |
Collapse
|
9
|
Romo-Rico J, Krishna SM, Bazaka K, Golledge J, Jacob MV. Potential of plant secondary metabolite-based polymers to enhance wound healing. Acta Biomater 2022; 147:34-49. [PMID: 35649506 DOI: 10.1016/j.actbio.2022.05.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 11/01/2022]
Abstract
There is a global epidemic of non-healing wounds. Chronic inflammation, overexpression of pro-inflammatory cytokines, oxidative stress and bacterial infection are implicated in delayed wound healing. Natural extracts are a rich source of bioactive molecules called plant secondary metabolites (PSMs) that include terpenes and phenols. These molecules may facilitate wound healing through their antioxidant, anti-inflammatory, and antibacterial activity. After briefly outlining the process of wound healing and how it is compromised in chronic wounds, this review focuses on investigating how PSMs-based polymers may improve wound healing. Best methods for incorporating PSMs into wound dressings are reviewed and critically compared. The exiting body of literature strongly suggests that PSMs-based polymers incorporated into wound dressings could have clinical value in aiding wound healing. STATEMENT OF SIGNIFICANCE: Chronic wounds develop by the persistence of inflammation, oxidative stress and infection. Chronic wounds affect the worldwide population, by reducing quality of life of patients with significant cost to healthcare systems. To help chronic wounds to heal and overcome this burden, materials with anti-inflammatory, antioxidant and antibacterial properties are required. Plant secondary metabolites (PSMs) are volatile materials that have all these properties. PSMs-based polymers can be fabricated by polymerization techniques. The present review provides an overview of the state-of-the-art of the wound healing mechanisms of PSMs. Current developments in the field of PSMs-based polymers are reviewed and their potential use as wound dressings is also covered.
Collapse
|
10
|
Kumar A, Al-Jumaili A, Bazaka O, Ivanova EP, Levchenko I, Bazaka K, Jacob MV. Functional nanomaterials, synergisms, and biomimicry for environmentally benign marine antifouling technology. Mater Horiz 2021; 8:3201-3238. [PMID: 34726218 DOI: 10.1039/d1mh01103k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Marine biofouling remains one of the key challenges for maritime industries, both for seafaring and stationary structures. Currently used biocide-based approaches suffer from significant drawbacks, coming at a significant cost to the environment into which the biocides are released, whereas novel environmentally friendly approaches are often difficult to translate from lab bench to commercial scale. In this article, current biocide-based strategies and their adverse environmental effects are briefly outlined, showing significant gaps that could be addressed through advanced materials engineering. Current research towards the use of natural antifouling products and strategies based on physio-chemical properties is then reviewed, focusing on the recent progress and promising novel developments in the field of environmentally benign marine antifouling technologies based on advanced nanocomposites, synergistic effects and biomimetic approaches are discussed and their benefits and potential drawbacks are compared to existing techniques.
Collapse
Affiliation(s)
- Avishek Kumar
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- Medical Physics Department, College of Medical Sciences Techniques, The University of Mashreq, Baghdad, Iraq
| | - Olha Bazaka
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| | - Elena P Ivanova
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| | - Igor Levchenko
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, 637616, Singapore
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| |
Collapse
|
11
|
|
12
|
Grant DS, Ahmed J, Whittle JD, Michelmore A, Vasilev K, Bazaka K, Jacob MV. Comparative Study of Natural Terpenoid Precursors in Reactive Plasmas for Thin Film Deposition. Molecules 2021; 26:molecules26164762. [PMID: 34443354 PMCID: PMC8402203 DOI: 10.3390/molecules26164762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
If plasma polymer thin films are to be synthesised from sustainable and natural precursors of chemically heterogeneous composition, it is important to understand the extent to which this composition influences the mechanism of polymerisation. To this end, a well-studied monoterpene alcohol, terpinen-4-ol, has been targeted for a comparative study with the naturally occurring mix of terpenes (viz. Melaleuca alternifolia oil) from which it is commonly distilled. Positive ion mode mass spectra of both terpinen-4-ol and M. alternifolia oil showed a decrease in disparities between the type and abundance of cationic species formed in their respective plasma environments as applied plasma power was increased. Supplementary biological assay revealed the antibacterial action of both terpinen-4-ol and M. alternifolia derived coatings with respect to S. aureus bacteria, whilst cytocompatibility was demonstrated by comparable eukaryotic cell adhesion to both coatings. Elucidating the processes occurring within the reactive plasmas can enhance the economics of plasma polymer deposition by permitting use of the minimum power, time and precursor pre-processing required to control the extent of monomer fragmentation and fabricate a film of the desired thickness and functionality.
Collapse
Affiliation(s)
- Daniel S. Grant
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
| | - Jakaria Ahmed
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
| | - Jason D. Whittle
- UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia; (J.D.W.); (A.M.); (K.V.)
| | - Andrew Michelmore
- UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia; (J.D.W.); (A.M.); (K.V.)
| | - Krasimir Vasilev
- UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia; (J.D.W.); (A.M.); (K.V.)
| | - Kateryna Bazaka
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
- School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia
| | - Mohan V. Jacob
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
- Correspondence: ; Tel.: +61-7-47-814-379
| |
Collapse
|
13
|
Levchenko I, Xu S, Baranov O, Bazaka O, Ivanova EP, Bazaka K. Plasma and Polymers: Recent Progress and Trends. Molecules 2021; 26:molecules26134091. [PMID: 34279431 PMCID: PMC8271681 DOI: 10.3390/molecules26134091] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 02/06/2023] Open
Abstract
Plasma-enhanced synthesis and modification of polymers is a field that continues to expand and become increasingly more sophisticated. The highly reactive processing environments afforded by the inherently dynamic nature of plasma media are often superior to ambient or thermal environments, offering substantial advantages over other processing methods. The fluxes of energy and matter toward the surface enable rapid and efficient processing, whereas the charged nature of plasma-generated particles provides a means for their control. The range of materials that can be treated by plasmas is incredibly broad, spanning pure polymers, polymer-metal, polymer-wood, polymer-nanocarbon composites, and others. In this review, we briefly outline some of the recent examples of the state-of-the-art in the plasma-based polymer treatment and functionalization techniques.
Collapse
Affiliation(s)
- Igor Levchenko
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
- Correspondence: (I.L.); (K.B.)
| | - Shuyan Xu
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
| | - Oleg Baranov
- Faculty of Aircraft Engines, National Aerospace University, 61070 Kharkiv, Ukraine;
| | - Olha Bazaka
- School of Science, RMIT University, P.O. Box 2476, Melbourne, VIC 3001, Australia; (O.B.); (E.P.I.)
| | - Elena P. Ivanova
- School of Science, RMIT University, P.O. Box 2476, Melbourne, VIC 3001, Australia; (O.B.); (E.P.I.)
| | - Kateryna Bazaka
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
- Correspondence: (I.L.); (K.B.)
| |
Collapse
|
14
|
Wang P, Zhou R, Zhou R, Recek N, Prasad K, Speight R, Richard D, Cullen PJ, Thompson EW, Ostrikov KK, Bazaka K. Correction to “Chemo-Radiative Stress of Plasma as a Modulator of Charge-Dependent Nanodiamond Cytotoxicity”. ACS Appl Bio Mater 2021; 4:2852. [DOI: 10.1021/acsabm.1c00175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Tharushi Perera PG, Todorova N, Vilagosh Z, Bazaka O, Nguyen THP, Bazaka K, Crawford RJ, Croft RJ, Yarovsky I, Ivanova EP. Translocation of silica nanospheres through giant unilamellar vesicles (GUVs) induced by a high frequency electromagnetic field. RSC Adv 2021; 11:31408-31420. [PMID: 35496859 PMCID: PMC9041541 DOI: 10.1039/d1ra05459g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/14/2021] [Indexed: 01/20/2023] Open
Abstract
Membrane model systems capable of mimicking live cell membranes were used for the first time in studying the effects arising from electromagnetic fields (EMFs) of 18 GHz where membrane permeability was observed following exposure.
Collapse
Affiliation(s)
- Palalle G. Tharushi Perera
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
- Faculty Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
| | - Nevena Todorova
- School of Engineering, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| | - Zoltan Vilagosh
- Faculty Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
| | - Olha Bazaka
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| | | | - Kateryna Bazaka
- School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia
| | - Russell J. Crawford
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| | - Rodney J. Croft
- School of Psychology, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Irene Yarovsky
- School of Engineering, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| | - Elena P. Ivanova
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia
| |
Collapse
|
16
|
Zhou R, Zhou R, Wang S, Mihiri Ekanayake UG, Fang Z, Cullen PJ, Bazaka K, Ostrikov KK. Power-to-chemicals: Low-temperature plasma for lignin depolymerisation in ethanol. Bioresour Technol 2020; 318:123917. [PMID: 32768280 DOI: 10.1016/j.biortech.2020.123917] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
Lignin valorisation into renewable fuels and platform chemicals is desirable but still encounters major challenges due to lignin's recalcitrant structure, and the lack of cost-, energy-, and material efficient conversion processes. Herein, we report a low-temperature plasma-based route to lignin depolymerisation at mild conditions. The discharge over ethanol surface locally creating a high-energy and reactive environment rich in free electrons, energetic H radicals, and other reactive species, is well suited for lignin depolymerisation. Furthermore, assisted with a Fenton reaction (by adding Fe2O3 and H2O2) to sustain a more oxidative environment, the lignin conversion yield increases from 42.6% to 66.0%. Thus-obtained renewable chemicals are rich in aromatics and dicarboxylic acid derivatives. The proposed strategy on intensifying reactive chemistry by high-power plasmas enables an effective power-to-chemicals conversion of lignin and may provide useful guidelines for modern biorefineries.
Collapse
Affiliation(s)
- Rusen Zhou
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane QLD 4000, Australia
| | - Renwu Zhou
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia.
| | - Sen Wang
- College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 210009, China
| | - U G Mihiri Ekanayake
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane QLD 4000, Australia
| | - Zhi Fang
- College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 210009, China
| | - Patrick J Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia
| | - Kateryna Bazaka
- The Research School of Electrical, Energy and Materials Engineering, The Australian National University, ACT 2601, Australia
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane QLD 4000, Australia
| |
Collapse
|
17
|
Dai X, Bazaka K, Thompson EW, Ostrikov K(K. Cold Atmospheric Plasma: A Promising Controller of Cancer Cell States. Cancers (Basel) 2020; 12:cancers12113360. [PMID: 33202842 PMCID: PMC7696697 DOI: 10.3390/cancers12113360] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/18/2020] [Accepted: 10/30/2020] [Indexed: 12/21/2022] Open
Abstract
Simple Summary Cancer treatment is complicated by the distinct phenotypic attractor states in which cancer cells exist within individual tumors, and inherent plasticity of cells in transiting between these states facilitates the acquisition of drug-resistant and more stem cell-like phenotypes in cancer cells. Controlling these crucial transition switches is therefore critical for the long-term success of any cancer therapy. This paper highlights the most promising avenues for controlling cancer state transition events by cold atmospheric plasma (CAP) to enable the development of efficient tools for cancer prevention and management. The key switches in carcinogenesis can be used to halt or reverse cancer progression, and understanding how CAP can modulate these processes is critical for the development of CAP-based strategies for cancer prevention, detection and effective treatment. Abstract Rich in reactive oxygen and nitrogen species, cold atmospheric plasma has been shown to effectively control events critical to cancer progression; selectively inducing apoptosis, reducing tumor volume and vasculature, and halting metastasis by taking advantage of, e.g., synergies between hydrogen peroxide and nitrites. This paper discusses the efficacy, safety and administration of cold atmospheric plasma treatment as a potential tool against cancers, with a focus on the mechanisms by which cold atmospheric plasma may affect critical transitional switches that govern tumorigenesis: the life/death control, tumor angiogenesis and epithelial–mesenchymal transition, and drug sensitivity spectrum. We introduce the possibility of modeling cell transitions between the normal and cancerous states using cold atmospheric plasma as a novel research avenue to enhance our understanding of plasma-aided control of oncogenesis.
Collapse
Affiliation(s)
- Xiaofeng Dai
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China
- Wuhan Ammunition Life-Tech Company, Ltd., Wuhan 430200, China
- Hospital of Xi’an Jiaotong University, Xi’an 710061, China
- Correspondence: ; Tel.: +86-181-6887-0169
| | - Kateryna Bazaka
- Research School of Electrical, Energy and Materials Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia;
| | - Erik W. Thompson
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4059, Australia; (E.W.T.); (K.O.)
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4059, Australia
- Translational Research Institute, Woolloongabba, QLD 4102, Australia
| | - Kostya (Ken) Ostrikov
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4059, Australia; (E.W.T.); (K.O.)
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
| |
Collapse
|
18
|
Wang P, Zhou R, Zhou R, Recek N, Prasad K, Speight R, Richard D, Cullen PJ, Thompson EW, Ostrikov KK, Bazaka K. Chemo-Radiative Stress of Plasma as a Modulator of Charge-Dependent Nanodiamond Cytotoxicity. ACS Appl Bio Mater 2020; 3:7202-7210. [DOI: 10.1021/acsabm.0c01000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peiyu Wang
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Rusen Zhou
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Renwu Zhou
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Nina Recek
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Ljubljana SI-1000, Slovenia
| | - Karthika Prasad
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Robert Speight
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Derek Richard
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Patrick J. Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Erik W. Thompson
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Translational Research Institute, Brisbane, QLD 4102, Australia
| | - Kostya Ken Ostrikov
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Kateryna Bazaka
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2000, Australia
| |
Collapse
|
19
|
Alancherry S, Bazaka K, Levchenko I, Al-Jumaili A, Kandel B, Alex A, Robles Hernandez FC, Varghese OK, Jacob MV. Fabrication of Nano-Onion-Structured Graphene Films from Citrus sinensis Extract and Their Wetting and Sensing Characteristics. ACS Appl Mater Interfaces 2020; 12:29594-29604. [PMID: 32500707 DOI: 10.1021/acsami.0c04353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Graphene and its derivatives have acquired substantial research attention in recent years because of their wide range of potential applications. Implementing sustainable technologies for fabricating these functional nanomaterials is becoming increasingly apparent, and therefore, a wide spectrum of naturally derived precursors has been identified and reformed through various established techniques for the purpose. Nevertheless, most of these methods could only be considered partially sustainable because of their complexity as well as high energy, time, and resource requirements. Here, we report the fabrication of carbon nano-onion-interspersed vertically oriented multilayer graphene nanosheets through a single-step, environmentally benign radio frequency plasma-enhanced chemical vapor deposition process from a low-cost carbon feedstock, the oil from the peel of Citrus sinensis orange fruits. C. sinensis essential oil is a volatile aroma liquid principally composed of nonsynthetic hydrocarbon limonene. Transmission electron microscopy studies on the structure unveiled the presence of hollow quasi-spherical carbon nano-onion-like structures incorporated within graphene layers. The as-fabricated nano-onion-incorporated graphene films exhibited a highly hydrophobic nature showing a water contact angle of up to 1290. The surface energies of these films were in the range of 41 to 35 mJ·m-2. Moreover, a chemiresistive sensor directly fabricated using C. sinensis-derived onion-structured graphene showed a p-type semiconductor nature and a promising response to acetone at room temperature. With its unique morphology, surface properties, and electrical characteristics, this material is expected to be useful for a wide range of applications.
Collapse
Affiliation(s)
- Surjith Alancherry
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Igor Levchenko
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
- Plasma Sources and Application Centre/Space Propulsion Centre Singapore, NIE, Nanyang Technological University, Singapore 637616, Singapore
| | - Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Bigyan Kandel
- Nanomaterials and Devices Laboratory, Department of Physics, University of Houston, Houston, Texas 77204, United States
| | - Aaron Alex
- Nanomaterials and Devices Laboratory, Department of Physics, University of Houston, Houston, Texas 77204, United States
| | - Francisco C Robles Hernandez
- Mechanical Engineering Technology, College of Technology, University of Houston, Houston, Texas 77204, United States
| | - Oomman K Varghese
- Nanomaterials and Devices Laboratory, Department of Physics, University of Houston, Houston, Texas 77204, United States
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
| |
Collapse
|
20
|
Kandasamy A, Ramasamy T, Samrin A, Narayanasamy P, Mohan R, Bazaka O, Levchenko I, Bazaka K, Mohandas M. Hierarchical Doped Gelatin-Derived Carbon Aerogels: Three Levels of Porosity for Advanced Supercapacitors. Nanomaterials (Basel) 2020; 10:nano10061178. [PMID: 32560290 PMCID: PMC7353417 DOI: 10.3390/nano10061178] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 02/06/2023]
Abstract
Nitrogen-doped graphene-based aerogels with three levels of hierarchically organized pores were prepared via a simple environmentally friendly process, and successfully tested in supercapacitor applications. Mesopores and macropores were formed during the aerogel preparation followed by carbonization and its chemical activation by potassium hydroxide (KOH). These mesopores and macropores consist of amorphous carbon and a 3D graphene framework. Thermal treatment at 700 °C, 800 °C, 900 °C in N2 atmosphere was done to etch out the amorphous carbon and obtain a stable N-doped 3D graphene. Specific capacitance values obtained from the electrochemical measurements are in the range of 232–170 F× g−1. The thus fabricated structures showed excellent cyclic stability, suggesting that these materials have potential as electrodes for solid asymmetric supercapacitors.
Collapse
Affiliation(s)
- Ayshuwarya Kandasamy
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India; (A.K.); (T.R.); (A.S.)
| | - Tamilselvi Ramasamy
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India; (A.K.); (T.R.); (A.S.)
| | - Ayesha Samrin
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India; (A.K.); (T.R.); (A.S.)
| | | | - Ramesh Mohan
- Smart Sensors, CSIR-Central Electronics Engineering Research Institute, Pilani, Rajasthan 333031, India;
| | - Olha Bazaka
- School of Science, RMIT University, PO Box 2476, Melbourne, VIC 3001, Australia;
| | - Igor Levchenko
- Plasma Sources and Application Centre/Space Propulsion Centre Singapore, NIE, Nanyang Technological University, Singapore 637616, Singapore;
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Kateryna Bazaka
- Plasma Sources and Application Centre/Space Propulsion Centre Singapore, NIE, Nanyang Technological University, Singapore 637616, Singapore;
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2601, Australia
- Correspondence: (K.B.); (M.M.)
| | - Mandhakini Mohandas
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India; (A.K.); (T.R.); (A.S.)
- Correspondence: (K.B.); (M.M.)
| |
Collapse
|
21
|
Nguyen DHK, Bazaka O, Bazaka K, Crawford RJ, Ivanova EP. Three-Dimensional Hierarchical Wrinkles on Polymer Films: From Chaotic to Ordered Antimicrobial Topographies. Trends Biotechnol 2020; 38:558-571. [PMID: 32302580 DOI: 10.1016/j.tibtech.2019.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/22/2019] [Accepted: 12/06/2019] [Indexed: 12/11/2022]
Abstract
Microbial contamination of polymer surfaces has become a significant challenge in domestic, industrial, and biomedical applications. Recent progress in our understanding of how topographical features of different length scales can be used to effectively and selectively control the attachment and proliferation of different cell types has provided an alternative strategy for imparting antibacterial activity to these surfaces. Among the well-recognized engineered models of antibacterial surface topographies, self-organized wrinkles have shown particular promise with respect to their antimicrobial characteristics. Here, we critically review the mechanisms by which wrinkles form on the surface of different types of polymer material and how they interact with various biomolecules and cell types. We also discuss the feasibility of using this antimicrobial strategy in real-life biomedical applications.
Collapse
Affiliation(s)
- Duy H K Nguyen
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia
| | - Olha Bazaka
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia
| | - Kateryna Bazaka
- Research School of Electrical Energy and Materials Engineering, College of Engineering and Computer Science, The Australian National University, Canberra ACT 2600, Australia
| | - Russell J Crawford
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia
| | - Elena P Ivanova
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne 3000, VIC, Australia.
| |
Collapse
|
22
|
Kumar A, Al-Jumaili A, Bazaka K, Mulvey P, Warner J, Jacob MV. In-Situ Surface Modification of Terpinen-4-ol Plasma Polymers for Increased Antibacterial Activity. Materials (Basel) 2020; 13:E586. [PMID: 32012768 PMCID: PMC7040605 DOI: 10.3390/ma13030586] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 01/07/2020] [Accepted: 01/14/2020] [Indexed: 11/16/2022]
Abstract
Surface modification of thin films is often performed to enhance their properties. In this work, in situ modification of Terpinen-4-ol (T4) plasma polymer is carried out via simultaneous surface functionalization and nanoparticle immobilization. Terpinen-4-ol plasma polymers surface were decorated with a layer of ZnO nanoparticles in an oxygen plasma environment immediately after polymer deposition. A combination of hydrophilic modification and ZnO nanoparticle functionalization of the T4 polymer surface led to an enhancement in antibacterial properties by factor of 3 (from 0.75 to 0.25 CFU.mm-2). In addition, ZnO nanoparticle-modified coatings demonstrated improved UV absorbing characteristics in the region of 300-400 nm by 60% relative to unmodified coatings. The ZnO modified coatings were transparent in the visible region of 400-700 nm. The finding points towards the potential use of ZnO nanoparticle-modified T4 plasma polymers as optically transparent UV absorbing coatings.
Collapse
Affiliation(s)
- Avishek Kumar
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville 4811, Australia; (A.K.); (A.A.-J.); (K.B.)
| | - Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville 4811, Australia; (A.K.); (A.A.-J.); (K.B.)
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville 4811, Australia; (A.K.); (A.A.-J.); (K.B.)
- Institute for Future Environments, Queensland University of Technology, Brisbane 4000, Australia
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra 2601, Australia
| | - Peter Mulvey
- AITHM, Immunology & Infectious Disease, Australian Institute of Tropical Health & Medicine, James Cook University, Townsville 4811, Australia;
| | - Jeffrey Warner
- Discipline of Biomedicine, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville 4811, Australia;
| | - Mohan V. Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville 4811, Australia; (A.K.); (A.A.-J.); (K.B.)
| |
Collapse
|
23
|
Zhou R, Zhou R, Zhang X, Fang Z, Wang X, Speight R, Wang H, Doherty W, Cullen PJ, Ostrikov KK, Bazaka K. High-Performance Plasma-Enabled Biorefining of Microalgae to Value-Added Products. ChemSusChem 2019; 12:4976-4985. [PMID: 31441585 DOI: 10.1002/cssc.201901772] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Conversion of renewable biomass by time- and energy-efficient techniques remains an important challenge. Herein, plasma catalytic liquefaction (PCL) is employed to achieve rapid liquefaction of microalgae under mild conditions. The choice of the catalyst affects both the liquefaction efficiency and the yield of products. The acid catalyst is more effective and gave a liquid yield of 73.95 wt % in 3 min, as opposed to 69.80 wt % obtained with the basic catalyst in 7 min. Analyses of the thus-formed products and the processing environment reveal that the enhanced PCL performance is linked to the rapid increase in temperature under the effect of plasma-induced electric fields and the generation of large quantities of reactive species. Moreover, the obtained solid residue can be simply upgraded to a carbon product suitable for supercapacitor applications. Therefore, the proposed strategy may provide a new avenue for fast and comprehensive utilization of biomass under benign conditions.
Collapse
Affiliation(s)
- Renwu Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW, Sydney, 2006, Australia
| | - Rusen Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Xianhui Zhang
- Department of Electronic Science, College of Physical Science and Technology, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen, 361005, P.R. China
| | - Zhi Fang
- College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing, 210009, P.R. China
| | - Xiaoxiang Wang
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Robert Speight
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Hongxia Wang
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - William Doherty
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Patrick J Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW, Sydney, 2006, Australia
| | - Kostya Ken Ostrikov
- 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
| |
Collapse
|
24
|
Xiang Q, Ma X, Zhang D, Zhou H, Liao Y, Zhang H, Xu S, Levchenko I, Bazaka K. Interfacial modification of titanium dioxide to enhance photocatalytic efficiency towards H2 production. J Colloid Interface Sci 2019; 556:376-385. [DOI: 10.1016/j.jcis.2019.08.033] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/02/2019] [Accepted: 08/08/2019] [Indexed: 10/26/2022]
|
25
|
Al-Jumaili A, Kumar A, Bazaka K, Jacob MV. Electrically Insulating Plasma Polymer/ZnO Composite Films. Materials (Basel) 2019; 12:E3099. [PMID: 31547551 PMCID: PMC6804142 DOI: 10.3390/ma12193099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/02/2019] [Accepted: 09/13/2019] [Indexed: 12/15/2022]
Abstract
In this report, the electrical properties of plasma polymer films functionalized with ZnO nanoparticles were investigated with respect to their potential applications in biomaterials and microelectronics fields. The nanocomposite films were produced using a single-step method that combines simultaneous plasma polymerization of renewable geranium essential oil with thermal decomposition of zinc acetylacetonate Zn(acac)2. The input power used for the deposition of composites were 10 W and 50 W, and the resulting composite structures were abbreviated as Zn/Ge 10 W and Zn/Ge 50 W, respectively. The electrical properties of pristine polymers and Zn/polymer composite films were studied in metal-insulator-metal structures. At a quantity of ZnO of around ~1%, it was found that ZnO had a small influence on the capacitance and dielectric constants of thus-fabricated films. The dielectric constant of films with smaller-sized nanoparticles exhibited the highest value, whereas, with the increase in ZnO particle size, the dielectric constant decreases. The conductivity of the composites was calculated to be in the in the range of 10-14-10-15 Ω-1 m-1, significantly greater than that for the pristine polymer, the latter estimated to be in the range of 10-16-10-17 Ω-1 m-1.
Collapse
Affiliation(s)
- Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- Physics Department, College of Science, Anbar University, Ramadi 31001, Iraq.
| | - Avishek Kumar
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2601, Australia.
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| |
Collapse
|
26
|
Zhou R, Zhou R, Wang P, Luan B, Zhang X, Fang Z, Xian Y, Lu X, Ostrikov KK, Bazaka K. Microplasma Bubbles: Reactive Vehicles for Biofilm Dispersal. ACS Appl Mater Interfaces 2019; 11:20660-20669. [PMID: 31067024 DOI: 10.1021/acsami.9b03961] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Interactions between effects generated by cold atmospheric-pressure plasmas and water have been widely investigated for water purification, chemical and nanomaterial synthesis, and, more recently, medicine and biotechnology. Reactive oxygen and nitrogen species (RONS) play critical roles in transferring the reactivity from gas plasmas to solutions to induce specific biochemical responses in living targets, e.g., pathogen inactivation and biofilm removal. While this approach works well in a single-organism system at a laboratory scale, integration of plasma-enabled biofilm removal into complex real-life systems, e.g., large aquaculture tanks, is far from trivial. This is because it is difficult to deliver sufficient concentrations of the right kind of species to biofilm-covered surfaces while carefully maintaining a suitable physiochemical environment that is healthy for its inhabitants, e.g., fish. In this work, we show that underwater microplasma bubbles (generated by a microplasma-bubble reactor that forms a dielectric barrier discharge at the gas-liquid interface with the applied voltage of 4.0 kV) act as transport vehicles to efficiently deliver reactive plasma species to the target biofilm sites on artificial and living surfaces while keeping healthy water conditions in a multispecies system. The as-generated air microplasma bubbles and plasma-activated water (PAW) both can effectively reduce the existing pathogenic biofilm load by ∼83 and 60%, respectively, after 15 min of discharge at 40 W and prevent any new biofilm from forming. The generation of underwater microplasma bubbles in a custom-made fish tank for less than a minute per day (20 s per time, twice daily) can introduce sufficient quantities of RONS into PAW to reduce the biofilm-infected area by ∼80-90% and improve the health status of Cichlasoma synspilum × Cichlasoma citrinellum blood parrot cichlid fish. Species generated include hydrogen peroxide, ozone, nitrite, nitrate, and nitric oxide. Using mimicked chemical solutions, we show that the plasma-induced nitric oxide acts as a critical bioactive species that triggers the release of cells from the biofilm and their inactivation.
Collapse
Affiliation(s)
| | | | | | - Bingyu Luan
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, College of Electronic Science and Technology , Xiamen University , Xiamen 361005 , China
| | - Xianhui Zhang
- Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Institute of Electromagnetics and Acoustics, Department of Electronic Science, College of Electronic Science and Technology , Xiamen University , Xiamen 361005 , China
| | - Zhi Fang
- College of Electrical Engineering and Control Science , Nanjing Tech University , Nanjing 210009 , China
| | - Yubin Xian
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Xinpei Lu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | | | | |
Collapse
|
27
|
Wandiyanto JV, Truong VK, Al Kobaisi M, Juodkazis S, Thissen H, Bazaka O, Bazaka K, Crawford RJ, Ivanova EP. The Fate of Osteoblast-Like MG-63 Cells on Pre-Infected Bactericidal Nanostructured Titanium Surfaces. Materials (Basel) 2019; 12:E1575. [PMID: 31091694 PMCID: PMC6567816 DOI: 10.3390/ma12101575] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/06/2019] [Accepted: 05/08/2019] [Indexed: 02/07/2023]
Abstract
Biomaterials that have been newly implanted inside the body are the substratum targets for a "race for the surface", in which bacterial cells compete against eukaryotic cells for the opportunity to colonize the surface. A victory by the former often results in biomaterial-associated infections, which can be a serious threat to patient health and can undermine the function and performance of the implant. Moreover, bacteria can often have a 'head start' if implant contamination has taken place either prior to or during the surgery. Current prevention and treatment strategies often rely on systemic antibiotic therapies, which are becoming increasingly ineffective due to a growing prevalence of antibiotic-resistant bacteria. Nanostructured surfaces that kill bacteria by physically rupturing bacterial cells upon contact have recently emerged as a promising solution for the mitigation of bacterial colonization of implants. Furthermore, these nanoscale features have been shown to enhance the adhesion and proliferation of eukaryotic cells, which is a key to, for example, the successful osseointegration of load-bearing titanium implants. The bactericidal activity and biocompatibility of such nanostructured surfaces are often, however, examined separately, and it is not clear to what extent bacterial cell-surface interactions would affect the subsequent outcomes of host-cell attachment and osseointegration processes. In this study, we investigated the ability of bactericidal nanostructured titanium surfaces to support the attachment and growth of osteoblast-like MG-63 human osteosarcoma cells, despite them having been pre-infected with pathogenic bacteria. MG-63 is a commonly used osteoblastic model to study bone cell viability, adhesion, and proliferation on the surfaces of load-bearing biomaterials, such as titanium. The nanostructured titanium surfaces used here were observed to kill the pathogenic bacteria, whilst simultaneously enhancing the growth of MG-63 cells in vitro when compared to that occurring on sterile, flat titanium surfaces. These results provide further evidence in support of nanostructured bactericidal surfaces being used as a strategy to help eukaryotic cells win the "race for the surface" against bacterial cells on implant materials.
Collapse
Affiliation(s)
- Jason V Wandiyanto
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | - Vi Khanh Truong
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
| | - Mohammad Al Kobaisi
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | - Saulius Juodkazis
- Center for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | | | - Olha Bazaka
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
| | - Kateryna Bazaka
- Institute for Future Environments, Queensland University of Technology, GPO Box 2434, Brisbane, QLD 4001, Australia.
| | - Russell J Crawford
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
| | - Elena P Ivanova
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, VIC 3000, Australia.
| |
Collapse
|
28
|
Zhou HP, Ye X, Huang W, Wu MQ, Mao LN, Yu B, Xu S, Levchenko I, Bazaka K. Wearable, Flexible, Disposable Plasma-Reduced Graphene Oxide Stress Sensors for Monitoring Activities in Austere Environments. ACS Appl Mater Interfaces 2019; 11:15122-15132. [PMID: 30869857 DOI: 10.1021/acsami.8b22673] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In austere environments, for example, in outer space, on surfaces of extra-terrestrial bodies (Moon, Mars, etc.), or under water, technologies that can enable continuous, reliable, and authentic monitoring of movement of human operators and devices can be critical. We report here the production and human body test of wearable, flexible graphene oxide stress sensors suitable for real-time monitoring of body parameters, state and position of humans, and automatic equipment. These sensors have excellent sensitivity and signal strength across a wide strain range, alleviating the need for additional instrumentation for signal processing and amplification. Their low cost makes them virtually disposable, which may benefit such applications as smart clothing. The sensors were fabricated by a concomitant reduction and N-doping of graphene oxide on polydimethylsiloxane in N2-H2 plasma. The direct bias and other plasma parameters have a significant effect on the reduction and properties of graphene oxide sensors, as shown by optical emission, Raman and X-ray photoelectron spectroscopies, and X-ray diffraction. Optical emission showed different excitation and ionization processes involving atomic and molecular species in the N2-H2 discharge. The photoelectron spectroscopy has confirmed the graphene reduction and introduction of nitrogen doping into the reduced graphene oxide. The bias efficiently controls plasma-induced electric fields, and plasma-related effects determine the N-doping levels. The reduced graphene oxides demonstrate excellent tensile properties, which make them suitable for efficient but cheap stress sensors. This eco-friendly, fast, room-temperature method shows a great potential for fabrication of efficient, flexible sensors.
Collapse
Affiliation(s)
| | | | | | | | | | - B Yu
- College of Nanoscale Science and Engineering (CNSE) , State University of New York , Albany , New York 12203 , United States
| | - S Xu
- Plasma Sources and Application Center/Space Propulsion Centre Singapore, NIE, and Institute of Advanced Studies , Nanyang Technological University , 637616 , Singapore
| | - I Levchenko
- Plasma Sources and Application Center/Space Propulsion Centre Singapore, NIE, and Institute of Advanced Studies , Nanyang Technological University , 637616 , Singapore
| | - K Bazaka
- Plasma Sources and Application Center/Space Propulsion Centre Singapore, NIE, and Institute of Advanced Studies , Nanyang Technological University , 637616 , Singapore
| |
Collapse
|
29
|
|
30
|
Prasad K, Zhou R, Zhou R, Schuessler D, Ostrikov KK, Bazaka K. Cosmetic reconstruction in breast cancer patients: Opportunities for nanocomposite materials. Acta Biomater 2019; 86:41-65. [PMID: 30576863 DOI: 10.1016/j.actbio.2018.12.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 12/08/2018] [Accepted: 12/17/2018] [Indexed: 12/23/2022]
Abstract
The most common malignancy in women, breast cancer remains a major medical challenge that affects the life of thousands of patients every year. With recognized benefits to body image and self-esteem, the use of synthetic mammary implants for elective cosmetic augmentation and post-mastectomy reconstruction continues to increase. Higher breast implant use leads to an increased occurrence of implant-related complications associated with implant leakage and rupture, capsular contracture, necrosis and infections, which include delayed healing, pain, poor aesthetic outcomes and the need for revision surgeries. Along with the health status of the implant recipient and the skill of the surgeon, the properties of the implant determine the likelihood of implant-related complications and, in doing so, specific patient outcomes. This paper will review the challenges associated with the use of silicone, saline and "gummy bear" implants in view of their application in patients recovering from breast cancer-related mastectomy, and investigate the opportunities presented by advanced functional nanomaterials in meeting these challenges and potentially opening new dimensions for breast reconstruction. STATEMENT OF SIGNIFICANCE: Breast cancer is a significant cause of morbidity and mortality in women worldwide, which is difficult to prevent or predict, and its treatment carries long-term physiological and psychological consequences. Post-mastectomy breast reconstruction addresses the cosmetic aspect of cancer treatment. Yet, drawbacks of current implants contribute to the development of implant-associated complications, which may lead to prolonged patient care, pain and loss of function. Nanomaterials can help resolve the intrinsic biomechanical mismatch between implant and tissues, enhance mechanical properties of soft implantable materials, and provide an alternative avenue for controlled drug delivery. Here, we explore advances in the use of functionalized nanomaterials to enhance the properties of breast implants, with representative examples that highlight the utility of nanomaterials in addressing key challenges associated with breast reconstruction.
Collapse
Affiliation(s)
- Karthika Prasad
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia; CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW 2070, Australia
| | - Renwu Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia; CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW 2070, Australia
| | - Rusen Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia; CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW 2070, Australia
| | - David Schuessler
- Product Development, Allergan, 2525 Dupont Drive, Irvine, CA 92612, United States
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia; CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW 2070, Australia
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia; CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW 2070, Australia.
| |
Collapse
|
31
|
Lim JWM, Levchenko I, Rohaizat MWAB, Huang S, Xu L, Sun YF, Potrivitu GC, Yee JS, Sim RZW, Wang Y, Levchenko S, Bazaka K, Xu S. Optimization, Test and Diagnostics of Miniaturized Hall Thrusters. J Vis Exp 2019. [PMID: 30829319 DOI: 10.3791/58466] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Miniaturized spacecraft and satellites require smart, highly efficient and durable low-thrust thrusters, capable of extended, reliable operation without attendance and adjustment. Thermochemical thrusters which utilize thermodynamic properties of gases as a means of acceleration have physical limitations on their exhaust gas velocity, resulting in low efficiency. Moreover, these engines demonstrate extremely low efficiency at small thrusts and may be unsuitable for continuously operating systems which provide real-time adaptive control of the spacecraft orientation, velocity and position. In contrast, electric propulsion systems which use electromagnetic fields to accelerate ionized gases (i.e., plasmas) do not have any physical limitation in terms of exhaust velocity, allowing virtually any mass efficiency and specific impulse. Low-thrust Hall thrusters have a lifetime of several thousand hours. Their discharge voltage ranges between 100 and 300 V, operating at a nominal power of <1 kW. They vary from 20 to 100 mm in size. Large Hall thrusters can provide fractions of millinewton of thrust. Over the past few decades, there has been an increasing interest in small mass, low power, and high efficiency propulsion systems to drive satellites of 50-200 kg. In this work, we will demonstrate how to build, test, and optimize a small (30 mm) Hall thruster capable of propelling a small satellite weighing about 50 kg. We will show the thruster operating in a large space environment simulator, and describe how thrust is measured and electric parameters, including plasma characteristics, are collected and processed to assess key thruster parameters. We will also demonstrate how the thruster is optimized to make it one of the most efficient small thrusters ever built. We will also address challenges and opportunities presented by new thruster materials.
Collapse
Affiliation(s)
- Jian W M Lim
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Igor Levchenko
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University; School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology;
| | - Muhammad W A B Rohaizat
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Shiyong Huang
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Luxiang Xu
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Yu Fei Sun
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - George C Potrivitu
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Jen S Yee
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Roysmond Z W Sim
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Youmei Wang
- Department of Physics, School of Science, Hangzhou Dianzi University
| | - Svitlana Levchenko
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Kateryna Bazaka
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology; Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| | - Shuyan Xu
- Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University
| |
Collapse
|
32
|
Levchenko I, Xu S, Mazouffre S, Keidar M, Bazaka K. Mars Colonization: Beyond Getting There. Glob Chall 2019; 3:1800062. [PMID: 31565356 PMCID: PMC6383964 DOI: 10.1002/gch2.201800062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/20/2018] [Indexed: 06/09/2023]
Abstract
Colonization of Mars: As humans gradually overcome technological challenges of deep space missions, the possibility of exploration and colonization of extraterrestrial outposts is being seriously considered by space agencies and commercial entities alike. But should we do it just because we potentially can? Is such an undoubtedly risky adventure justified from the economic, legal, and ethical points of view? And even if it is, do we have a system of instruments necessary to effectively and fairly manage these aspects of colonization? In this essay, a rich diversity of current opinions on the pros and cons of Mars colonization voiced by space enthusiasts with backgrounds in space technology, economics, and materials science are examined.
Collapse
Affiliation(s)
- Igor Levchenko
- Plasma Sources and Applications Centre/Space Propulsion CentreNIENanyang Technological UniversitySingapore637616Singapore
- School of ChemistryPhysics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD4000Australia
| | - Shuyan Xu
- Plasma Sources and Applications Centre/Space Propulsion CentreNIENanyang Technological UniversitySingapore637616Singapore
| | - Stéphane Mazouffre
- CNRSICAREElectric Propulsion Team1c Avenue de la Recherche Scientifique45071OrléansFrance
| | - Michael Keidar
- Mechanical and Aerospace EngineeringGeorge Washington UniversityWashingtonDC20052USA
| | - Kateryna Bazaka
- School of ChemistryPhysics and Mechanical EngineeringQueensland University of TechnologyBrisbaneQLD4000Australia
| |
Collapse
|
33
|
Perera PGT, Nguyen THP, Dekiwadia C, Wandiyanto JV, Sbarski I, Bazaka O, Bazaka K, Crawford RJ, Croft RJ, Ivanova EP. Exposure to high-frequency electromagnetic field triggers rapid uptake of large nanosphere clusters by pheochromocytoma cells. Int J Nanomedicine 2018; 13:8429-8442. [PMID: 30587969 PMCID: PMC6294056 DOI: 10.2147/ijn.s183767] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background Effects of man-made electromagnetic fields (EMF) on living organisms potentially include transient and permanent changes in cell behaviour, physiology and morphology. At present, these EMF-induced effects are poorly defined, yet their understanding may provide important insights into consequences of uncontrolled (e.g., environmental) as well as intentional (e.g., therapeutic or diagnostic) exposure of biota to EMFs. In this work, for the first time, we study mechanisms by which a high frequency (18 GHz) EMF radiation affects the physiology of membrane transport in pheochromocytoma PC 12, a convenient model system for neurotoxicological and membrane transport studies. Methods and results Suspensions of the PC 12 cells were subjected to three consecutive cycles of 30s EMF treatment with a specific absorption rate (SAR) of 1.17 kW kg-1, with cells cooled between exposures to reduce bulk dielectric heating. The EMF exposure resulted in a transient increase in membrane permeability for 9 min in up to 90 % of the treated cells, as demonstrated by rapid internalisation of silica nanospheres (diameter d ≈ 23.5 nm) and their clusters (d ≈ 63 nm). In contrast, the PC 12 cells that received an equivalent bulk heat treatment behaved similar to the untreated controls, showing lack to minimal nanosphere uptake of approximately 1-2 %. Morphology and growth of the EMF treated cells were not altered, indicating that the PC 12 cells were able to remain viable after the EMF exposure. The metabolic activity of EMF treated PC 12 cells was similar to that of the heat treated and control samples, with no difference in the total protein concentration and lactate dehydrogenase (LDH) release between these groups. Conclusion These results provide new insights into the mechanisms of EMF-induced biological activity in mammalian cells, suggesting a possible use of EMFs to facilitate efficient transport of biomolecules, dyes and tracers, and genetic material across cell membrane in drug delivery and gene therapy, where permanent permeabilisation or cell death is undesirable.
Collapse
Affiliation(s)
- Palalle G Tharushi Perera
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | | | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility, College of Science, Engineering and Health, RMIT University, Melbourne, VIC, Australia
| | - Jason V Wandiyanto
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Igor Sbarski
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Olga Bazaka
- School of Science, RMIT University, Melbourne, VIC, Australia,
| | - Kateryna Bazaka
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, Australia
| | | | - Rodney J Croft
- School of Psychology, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Elena P Ivanova
- School of Science, RMIT University, Melbourne, VIC, Australia,
| |
Collapse
|
34
|
Levchenko I, Bazaka K, Belmonte T, Keidar M, Xu S. Advanced Materials for Next-Generation Spacecraft. Adv Mater 2018; 30:e1802201. [PMID: 30302826 DOI: 10.1002/adma.201802201] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/16/2018] [Indexed: 06/08/2023]
Abstract
Spacecraft are expected to traverse enormous distances over long periods of time without an opportunity for maintenance, re-fueling, or repair, and, for interplanetary probes, no on-board crew to actively control the spacecraft configuration or flight path. Nevertheless, space technology has reached the stage when mining of space resources, space travel, and even colonization of other celestial bodies such as Mars and the Moon are being seriously considered. These ambitious aims call for spacecraft capable of self-controlled, self-adapting, and self-healing behavior. It is a tough challenge to address using traditional materials and approaches for their assembly. True interplanetary advances may only be attained using novel self-assembled and self-healing materials, which would allow for realization of next-generation spacecraft, where the concepts of adaptation and healing are at the core of every level of spacecraft design. Herein, recent achievements are captured and future directions in materials-driven development of space technology outlined.
Collapse
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
| | - Thierry Belmonte
- Department of Chemistry and Physics of Solids and Surfaces, Institut Jean Lamour - CNRS - University Lorraine, 2 allée André Guinier, Campus Artem, 54000, Nancy, France
| | - 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
| |
Collapse
|
35
|
Bazaka K, Baranov O, Cvelbar U, Podgornik B, Wang Y, Huang S, Xu L, Lim JWM, Levchenko I, Xu S. Oxygen plasmas: a sharp chisel and handy trowel for nanofabrication. Nanoscale 2018; 10:17494-17511. [PMID: 30226508 DOI: 10.1039/c8nr06502k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Although extremely chemically reactive, oxygen plasmas feature certain properties that make them attractive not only for material removal via etching and sputtering, but also for driving and sustaining nucleation and growth of various nanostructures in plasma bulk and on plasma-exposed surfaces. In this minireview, a number of representative examples is used to demonstrate key mechanisms and unique capabilities of oxygen plasmas and how these can be used in present-day nano-fabrication. In addition to modification and functionalisation processes typical for oxygen plasmas, their ability to catalyse the growth of complex nanoarchitectures is emphasized. Two types of technologies based on oxygen plasmas, namely surface treatment without a change in the size and shape of surface features, as well as direct growth of oxide structures, are used to better illustrate the capabilities of oxygen plasmas as a powerful process environment. Future applications and possible challenges for the use of oxygen plasmas in nanofabrication are discussed.
Collapse
Affiliation(s)
- K Bazaka
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Affiliation(s)
- Xing Ye
- School of Materials and EnergyUniversity of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu Sichuan 611731 China
| | - Haiping Zhou
- School of Materials and EnergyUniversity of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu Sichuan 611731 China
| | - Igor Levchenko
- Plasma Sources and Application Center/Space Propulsion Centre Singapore, NIEand Institute of Advanced StudiesNanyang Technological University 637616 Singapore
- School of ChemistryPhysics, and Mechanical EngineeringQueensland University of Technology, Brisbane Australia
| | - Kateryna Bazaka
- School of ChemistryPhysics, and Mechanical EngineeringQueensland University of Technology, Brisbane Australia
| | - Shuyan Xu
- Plasma Sources and Application Center/Space Propulsion Centre Singapore, NIEand Institute of Advanced StudiesNanyang Technological University 637616 Singapore
| | - Shaoqing Xiao
- Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education)Department of Electronic EngineeringJiangnan University Wuxi 214122 China
| |
Collapse
|
37
|
Grant DS, Siegele R, Bazaka K, Jacob MV. Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor. J Appl Polym Sci 2018. [DOI: 10.1002/app.46498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniel S. Grant
- College of Science and EngineeringJames Cook UniversityTownsville Queensland 4811 Australia
| | - Rainer Siegele
- Institute for Environmental Research, Australian Nuclear Science and Technology OrganisationLucas Heights New South Wales 2234 Australia
| | - Kateryna Bazaka
- College of Science and EngineeringJames Cook UniversityTownsville Queensland 4811 Australia
- School of Chemistry, Physics, and Mechanical EngineeringQueensland University of TechnologyBrisbane Queensland 4000 Australia
| | - Mohan V. Jacob
- College of Science and EngineeringJames Cook UniversityTownsville Queensland 4811 Australia
| |
Collapse
|
38
|
Recek N, Zhou R, Zhou R, Te'o VSJ, Speight RE, Mozetič M, Vesel A, Cvelbar U, Bazaka K, Ostrikov KK. Improved fermentation efficiency of S. cerevisiae by changing glycolytic metabolic pathways with plasma agitation. Sci Rep 2018; 8:8252. [PMID: 29844402 PMCID: PMC5974074 DOI: 10.1038/s41598-018-26227-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 04/18/2018] [Indexed: 12/14/2022] Open
Abstract
Production of ethanol by the yeast Saccharomyces cerevisiae is a process of global importance. In these processes, productivities and yields are pushed to their maximum possible values leading to cellular stress. Transient and lasting enhancements in tolerance and performance have been obtained by genetic engineering, forced evolution, and exposure to moderate levels of chemical and/or physical stimuli, yet the drawbacks of these methods include cost, and multi-step, complex and lengthy treatment protocols. Here, plasma agitation is shown to rapidly induce desirable phenotypic changes in S. cerevisiae after a single treatment, resulting in improved conversion of glucose to ethanol. With a complex environment rich in energetic electrons, highly-reactive chemical species, photons, and gas flow effects, plasma treatment simultaneously mimics exposure to multiple environmental stressors. A single treatment of up to 10 minutes performed using an atmospheric pressure plasma jet was sufficient to induce changes in cell membrane structure, and increased hexokinase 2 activity and secondary metabolite production. These results suggest that plasma treatment is a promising strategy that can contribute to improving metabolic activity in industrial microbial strains, and thus the practicality and economics of industrial fermentations.
Collapse
Affiliation(s)
- Nina Recek
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Ljubljana, SI-1000, Slovenia
| | - Renwu Zhou
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Rusen Zhou
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | | | - Robert E Speight
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Miran Mozetič
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Ljubljana, SI-1000, Slovenia
| | - Alenka Vesel
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Ljubljana, SI-1000, Slovenia
| | - Uros Cvelbar
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Ljubljana, SI-1000, Slovenia
| | - Kateryna Bazaka
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia. .,CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P. O. Box 218, Lindfield, NSW 2070, Australia.
| | - Kostya Ken Ostrikov
- Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4000, Australia. .,CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P. O. Box 218, Lindfield, NSW 2070, Australia.
| |
Collapse
|
39
|
Al-Jumaili A, Kumar A, Bazaka K, Jacob MV. Plant Secondary Metabolite-Derived Polymers: A Potential Approach to Develop Antimicrobial Films. Polymers (Basel) 2018; 10:E515. [PMID: 30966549 PMCID: PMC6415405 DOI: 10.3390/polym10050515] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 04/27/2018] [Accepted: 05/02/2018] [Indexed: 12/21/2022] Open
Abstract
The persistent issue of bacterial and fungal colonization of artificial implantable materials and the decreasing efficacy of conventional systemic antibiotics used to treat implant-associated infections has led to the development of a wide range of antifouling and antibacterial strategies. This article reviews one such strategy where inherently biologically active renewable resources, i.e., plant secondary metabolites (PSMs) and their naturally occurring combinations (i.e., essential oils) are used for surface functionalization and synthesis of polymer thin films. With a distinct mode of antibacterial activity, broad spectrum of action, and diversity of available chemistries, plant secondary metabolites present an attractive alternative to conventional antibiotics. However, their conversion from liquid to solid phase without a significant loss of activity is not trivial. Using selected examples, this article shows how plasma techniques provide a sufficiently flexible and chemically reactive environment to enable the synthesis of biologically-active polymer coatings from volatile renewable resources.
Collapse
Affiliation(s)
- Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- Physics Department, College of Science, Ramadi, Anbar University, Ramadi 11, Iraq.
| | - Avishek Kumar
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| |
Collapse
|
40
|
Baranov O, Xu S, Ostrikov K, Wang BB, Cvelbar U, Bazaka K, Levchenko I. Towards universal plasma-enabled platform for the advanced nanofabrication: plasma physics level approach. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s41614-018-0016-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Levchenko I, Bazaka K, Keidar M, Xu S, Fang J. Hierarchical Multicomponent Inorganic Metamaterials: Intrinsically Driven Self-Assembly at the Nanoscale. Adv Mater 2018; 30:1702226. [PMID: 29152907 DOI: 10.1002/adma.201702226] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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.
Collapse
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
| |
Collapse
|
42
|
Kumar A, Grant DS, Bazaka K, Jacob MV. Tailoring terpenoid plasma polymer properties by controlling the substrate temperature during PECVD. J Appl Polym Sci 2017. [DOI: 10.1002/app.45771] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Avishek Kumar
- Electronics Materials Lab; College of Science, Technology and Engineering, James Cook University; Townsville Queensland 4811 Australia
| | - Daniel S. Grant
- Electronics Materials Lab; College of Science, Technology and Engineering, James Cook University; Townsville Queensland 4811 Australia
| | - Kateryna Bazaka
- Electronics Materials Lab; College of Science, Technology and Engineering, James Cook University; Townsville Queensland 4811 Australia
- Institute for Future Environments; School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology; Brisbane Queensland 4000 Australia
- CSIRO−QUT Joint Sustainable Materials and Devices Laboratory; Commonwealth Scientific and Industrial Research Organization; Lindfield, P.O. Box 218 New South Wales 2070 Australia
| | - Mohan V. Jacob
- Electronics Materials Lab; College of Science, Technology and Engineering, James Cook University; Townsville Queensland 4811 Australia
| |
Collapse
|
43
|
Al-Jumaili A, Bazaka K, Jacob MV. Retention of Antibacterial Activity in Geranium Plasma Polymer Thin Films. Nanomaterials (Basel) 2017; 7:nano7090270. [PMID: 28902134 PMCID: PMC5618381 DOI: 10.3390/nano7090270] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/05/2017] [Accepted: 09/05/2017] [Indexed: 01/21/2023]
Abstract
Bacterial colonisation of biomedical devices demands novel antibacterial coatings. Plasma-enabled treatment is an established technique for selective modification of physicochemical characteristics of the surface and deposition of polymer thin films. We investigated the retention of inherent antibacterial activity in geranium based plasma polymer thin films. Attachment and biofilm formation by Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli was significantly reduced on the surfaces of samples fabricated at 10 W radio frequency (RF) power, compared to that of control or films fabricated at higher input power. This was attributed to lower contact angle and retention of original chemical functionality in the polymer films fabricated under low input power conditions. The topography of all surfaces was uniform and smooth, with surface roughness of 0.18 and 0.69 nm for films fabricated at 10 W and 100 W, respectively. Hardness and elastic modules of films increased with input power. Independent of input power, films were optically transparent within the visible wavelength range, with the main absorption at ~290 nm and optical band gap of ~3.6 eV. These results suggest that geranium extract-derived polymers may potentially be used as antibacterial coatings for contact lenses.
Collapse
Affiliation(s)
- Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| |
Collapse
|
44
|
Al-Jumaili A, Alancherry S, Bazaka K, Jacob MV. Review on the Antimicrobial Properties of Carbon Nanostructures. Materials (Basel) 2017; 10:E1066. [PMID: 28892011 PMCID: PMC5615720 DOI: 10.3390/ma10091066] [Citation(s) in RCA: 179] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/04/2017] [Accepted: 09/06/2017] [Indexed: 01/08/2023]
Abstract
Swift developments in nanotechnology have prominently encouraged innovative discoveries across many fields. Carbon-based nanomaterials have emerged as promising platforms for a broad range of applications due to their unique mechanical, electronic, and biological properties. Carbon nanostructures (CNSs) such as fullerene, carbon nanotubes (CNTs), graphene and diamond-like carbon (DLC) have been demonstrated to have potent broad-spectrum antibacterial activities toward pathogens. In order to ensure the safe and effective integration of these structures as antibacterial agents into biomaterials, the specific mechanisms that govern the antibacterial activity of CNSs need to be understood, yet it is challenging to decouple individual and synergistic contributions of physical, chemical and electrical effects of CNSs on cells. In this article, recent progress in this area is reviewed, with a focus on the interaction between different families of carbon nanostructures and microorganisms to evaluate their bactericidal performance.
Collapse
Affiliation(s)
- Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Surjith Alancherry
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| |
Collapse
|
45
|
Prasad K, Bazaka O, Chua M, Rochford M, Fedrick L, Spoor J, Symes R, Tieppo M, Collins C, Cao A, Markwell D, Ostrikov KK, Bazaka K. Metallic Biomaterials: Current Challenges and Opportunities. Materials (Basel) 2017; 10:E884. [PMID: 28773240 PMCID: PMC5578250 DOI: 10.3390/ma10080884] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/14/2017] [Accepted: 07/25/2017] [Indexed: 11/16/2022]
Abstract
Metallic biomaterials are engineered systems designed to provide internal support to biological tissues and they are being used largely in joint replacements, dental implants, orthopaedic fixations and stents. Higher biomaterial usage is associated with an increased incidence of implant-related complications due to poor implant integration, inflammation, mechanical instability, necrosis and infections, and associated prolonged patient care, pain and loss of function. In this review, we will briefly explore major representatives of metallic biomaterials along with the key existing and emerging strategies for surface and bulk modification used to improve biointegration, mechanical strength and flexibility of biometals, and discuss their compatibility with the concept of 3D printing.
Collapse
Affiliation(s)
- Karthika Prasad
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organization, P.O. Box 218, Lindfield, NSW 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Olha Bazaka
- College of Science and Engineering, Technology and Engineering, James Cook University, Townsville, QLD 4810, Australia.
| | - Ming Chua
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Madison Rochford
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Liam Fedrick
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Jordan Spoor
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Richard Symes
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Marcus Tieppo
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Cameron Collins
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Alex Cao
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - David Markwell
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organization, P.O. Box 218, Lindfield, NSW 2070, Australia.
- Institute of Health and Biomedical Innovation, 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.
- CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organization, P.O. Box 218, Lindfield, NSW 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- College of Science and Engineering, Technology and Engineering, James Cook University, Townsville, QLD 4810, Australia.
| |
Collapse
|
46
|
Wang XQ, Zhou RW, Groot GD, Bazaka K, Murphy AB, Ostrikov KK. Spectral characteristics of cotton seeds treated by a dielectric barrier discharge plasma. Sci Rep 2017; 7:5601. [PMID: 28717249 PMCID: PMC5514119 DOI: 10.1038/s41598-017-04963-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 05/22/2017] [Indexed: 11/24/2022] Open
Abstract
Cold atmospheric plasma has recently emerged as a simple, low-cost and efficient physical method for inducing significant biological responses in seeds and plants without the use of traditional, potentially environmentally-hazardous chemicals, fungicides or hormones. While the beneficial effects of plasma treatment on seed germination, disease resistance and agricultural output have been reported, the mechanisms that underpin the observed biological responses are yet to be fully described. This study employs Fourier Transform Infrared (FTIR) spectroscopy and emission spectroscopy to capture chemical interactions between plasmas and seed surfaces with the aim to provide a more comprehensive account of plasma-seed interactions. FTIR spectroscopy of the seed surface confirms plasma-induced chemical etching of the surface. The etching facilitates permeation of water into the seed, which is confirmed by water uptake measurements. FTIR of exhaust and emission spectra of discharges show oxygen-containing species known for their ability to stimulate biochemical processes and deactivate pathogenic microorganisms. In addition, water gas, CO2, CO and molecules containing -C(CH3)3- moieties observed in FTIR spectra of the exhaust gas during plasma treatment may be partly responsible for the plasma chemical etching of seed surface through oxidizing the organic components of the seed coat.
Collapse
Affiliation(s)
- Xing-Quan Wang
- CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, PO Box 218, Lindfield, NSW 2070, Australia
- School of Physics and Electronic Information, Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou, 341000, China
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Ren-Wu Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Gerard de Groot
- CSIRO Manufacturing, PO Box 218, Lindfield, NSW 2070, Australia
| | - Kateryna Bazaka
- CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, PO Box 218, Lindfield, NSW 2070, Australia.
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | | | - Kostya Ken Ostrikov
- CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, PO Box 218, Lindfield, NSW 2070, Australia
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- CSIRO Manufacturing, PO Box 218, Lindfield, NSW 2070, Australia
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia
| |
Collapse
|
47
|
Prasad K, Lekshmi GS, Ostrikov K, Lussini V, Blinco J, Mohandas M, Vasilev K, Bottle S, Bazaka K, Ostrikov K. Synergic bactericidal effects of reduced graphene oxide and silver nanoparticles against Gram-positive and Gram-negative bacteria. Sci Rep 2017; 7:1591. [PMID: 28484209 PMCID: PMC5431540 DOI: 10.1038/s41598-017-01669-5] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 04/03/2017] [Indexed: 02/06/2023] Open
Abstract
Reduced graphene oxide (rGO) is a promising antibacterial material, the efficacy of which can be further enhanced by the addition of silver nanoparticles (nAg). In this study, the mechanisms of antibacterial activity of rGO-nAg nanocomposite against several important human pathogenic multi-drug resistant bacteria, namely Gram-positive coccal Staphylococcus aureus and Gram-negative rod-shaped Escherichia coli and Proteus mirabilis are investigated. At the same concentration (100 µg/ml), rGO-nAg nanocomposite was significantly more effective against all three pathogens than either rGO or nAg. The nanocomposite was equally active against P. mirabilis and S. aureus as systemic antibiotic nitrofurantoin, and significantly more effective against E. coli. Importantly, the inhibition was much faster in the case of rGO-nAg nanocomposite compared to nitrofurantoin, attributed to the synergistic effects of rGO-nAg mediated contact killing and oxidative stress. This study may provide new insights for the better understanding of antibacterial actions of rGO-nAg nanocomposite and for the better designing of graphene-based antibiotics or other biomedical applications.
Collapse
Affiliation(s)
- Karthika Prasad
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
- CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW, 2070, Australia
| | - G S Lekshmi
- Department of Nano science and Technology, Anna university, Chennai, 600 025, India
| | - Kola Ostrikov
- School of Engineering, University of Southern Australia, Adelaide, South Australia, 5000, Australia
| | - Vanessa Lussini
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
| | - James Blinco
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
| | - Mandhakini Mohandas
- Department of Nano science and Technology, Anna university, Chennai, 600 025, India
| | - Krasimir Vasilev
- School of Engineering, University of Southern Australia, Adelaide, South Australia, 5000, Australia
| | - Steven Bottle
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia.
- CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW, 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, 4000, Australia.
| | - Kostya Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland, 4000, Australia.
- CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O. Box 218, Lindfield, NSW, 2070, Australia.
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, 4000, Australia.
| |
Collapse
|
48
|
Bazaka K, Destefani R, Jacob MV. Plant-derived cis-β-ocimene as a precursor for biocompatible, transparent, thermally-stable dielectric and encapsulating layers for organic electronics. Sci Rep 2016; 6:38571. [PMID: 27934916 PMCID: PMC5146940 DOI: 10.1038/srep38571] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 11/10/2016] [Indexed: 01/21/2023] Open
Abstract
This article presents low-temperature, one-step dry synthesis of optically transparent thermally-stable, biocompatible cis-β-ocimene-based thin films for applications as interlayer dielectric and encapsulating layer for flexible electronic devices, e.g. OLEDs. Morphological analysis of thin films shows uniform, very smooth (Rq < 1 nm) and defect-free moderately hydrophilic surfaces. The films are optically transparent, with a refractive index of ~1.58 at 600 nm, an optical band gap of ~2.85 eV, and dielectric constant of 3.5-3.6 at 1 kHz. Upon heating, thin films are chemically and optically stable up to at least 200 °C, where thermal stability increases for films manufactured at higher RF power as well as for films deposited away from the plasma glow. Heating of the sample increases the dielectric constant, from 3.7 (25 °C) to 4.7 (120 °C) at 1 kHz for polymer fabricated at 25 W. Polymers are biocompatible with non-adherent THP-1 cells and adherent mouse macrophage cells, including LPS-stimulated macrophages, and maintain their material properties after 48 h of immersion into simulated body fluid. The versatile nature of the films fabricated in this study may be exploited in next-generation consumer electronics and energy technologies.
Collapse
Affiliation(s)
- Kateryna Bazaka
- School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000 Australia.,Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811 Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia.,CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O.Box 218, Lindfield, NSW 2070, Australia
| | - Ryan Destefani
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811 Australia
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811 Australia
| |
Collapse
|
49
|
Wang XQ, Wang FP, Chen W, Huang J, Bazaka K, Ostrikov KK. Non-equilibrium plasma prevention of Schistosoma japonicum transmission. Sci Rep 2016; 6:35353. [PMID: 27739459 PMCID: PMC5064309 DOI: 10.1038/srep35353] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 09/28/2016] [Indexed: 01/25/2023] Open
Abstract
Schistosoma japonicum is a widespread human and animal parasite that causes intestinal and hepatosplenic schistosomiasis linked to colon, liver and bladder cancers, and anemia. Estimated 230 million people are currently infected with Schistosoma spp, with 779 million people at risk of contracting the parasite. Infection occurs when a host comes into contact with cercariae, a planktonic larval stage of the parasite, and can be prevented by inactivating the larvae, commonly by chemical treatment. We investigated the use of physical non-equilibrium plasma generated at atmospheric pressure using custom-made dielectric barrier discharge reactor to kill S. japonicum cercariae. Survival rate decreased with treatment time and applied power. Plasmas generated in O2 and air gas discharges were more effective in killing S. japonicum cercariae than that generated in He, which is directly related to the mechanism by which cercariae are inactivated. Reactive oxygen species, such as O atoms, abundant in O2 plasma and NO in air plasma play a major role in killing of S. japonicum cercariae via oxidation mechanisms. Similar level of efficacy is also shown for a gliding arc discharge plasma jet generated in ambient air, a system that may be more appropriate for scale-up and integration into existing water treatment processes.
Collapse
Affiliation(s)
- Xing-Quan Wang
- School of Physics and Electronic Information, Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou 341000, China.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Feng-Peng Wang
- School of Physics and Electronic Information, Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou 341000, China
| | - Wei Chen
- School of Physics and Electronic Information, Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou 341000, China
| | - Jun Huang
- School of Physics and Electronic Information, Institute of Optoelectronic Materials and Technology, Gannan Normal University, Ganzhou 341000, China
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia.,CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O.Box 218, Lindfield, NSW 2070, Australia
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia.,Institute for Future Environments, Queensland University of Technology, Brisbane, QLD 4000, Australia.,CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P.O.Box 218, Lindfield, NSW 2070, Australia
| |
Collapse
|
50
|
Zhou R, Zhou R, Zhang X, Zhuang J, Yang S, Bazaka K, Ken Ostrikov K. Effects of Atmospheric-Pressure N2, He, Air, and O2 Microplasmas on Mung Bean Seed Germination and Seedling Growth. Sci Rep 2016; 6:32603. [PMID: 27584560 PMCID: PMC5007987 DOI: 10.1038/srep32603] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 08/10/2016] [Indexed: 01/25/2023] Open
Abstract
Atmospheric-pressure N2, He, air, and O2 microplasma arrays have been used to investigate the effects of plasma treatment on seed germination and seedling growth of mung bean in aqueous solution. Seed germination and growth of mung bean were found to strongly depend on the feed gases used to generate plasma and plasma treatment time. Compared to the treatment with atmospheric-pressure O2, N2 and He microplasma arrays, treatment with air microplasma arrays was shown to be more efficient in improving both the seed germination rate and seedling growth, the effect attributed to solution acidification and interactions with plasma-generated reactive oxygen and nitrogen species. Acidic environment caused by air discharge in water may promote leathering of seed chaps, thus enhancing the germination rate of mung bean, and stimulating the growth of hypocotyl and radicle. The interactions between plasma-generated reactive species, such as hydrogen peroxide (H2O2) and nitrogen compounds, and seeds led to a significant acceleration of seed germination and an increase in seedling length of mung bean. Electrolyte leakage rate of mung bean seeds soaked in solution activated using air microplasma was the lowest, while the catalase activity of thus-treated mung bean seeds was the highest compared to other types of microplasma.
Collapse
Affiliation(s)
- Renwu Zhou
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.,Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Rusen Zhou
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xianhui Zhang
- Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Jinxing Zhuang
- Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Size Yang
- Fujian Key Laboratory for Plasma and Magnetic Resonance, School of Physics Science and Technology, Xiamen University, Xiamen 361005, China
| | - Kateryna Bazaka
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.,CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P. O. Box 218, Lindfield, NSW 2070, Australia
| | - Kostya Ken Ostrikov
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, Queensland 4000, Australia.,CSIRO-QUT Joint Sustainable Materials and Devices Laboratory, Commonwealth Scientific and Industrial Research Organisation, P. O. Box 218, Lindfield, NSW 2070, Australia
| |
Collapse
|