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Forsyth JR, Barnsley G, Amirghasemi M, Barthelemy J, Elshahomi A, Kosasih B, Perez P, Beirne S, Steele JR, In Het Panhuis M. Understanding the relationship between surfing performance and fin design. Sci Rep 2024; 14:8734. [PMID: 38627460 PMCID: PMC11021506 DOI: 10.1038/s41598-024-58387-y] [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: 11/02/2023] [Accepted: 03/28/2024] [Indexed: 04/19/2024] Open
Abstract
This research aimed to determine whether accomplished surfers could accurately perceive how changes to surfboard fin design affected their surfing performance. Four different surfboard fins, including conventional, single-grooved, and double-grooved fins, were developed using computer-aided design combined with additive manufacturing (3D printing). We systematically installed these 3D-printed fins into instrumented surfboards, which six accomplished surfers rode on waves in the ocean in a random order while blinded to the fin condition. We quantified the surfers' wave-riding performance during each surfing bout using a sport-specific tracking device embedded in each instrumented surfboard. After each fin condition, the surfers rated their perceptions of the Drive, Feel, Hold, Speed, Stiffness, and Turnability they experienced while performing turns using a visual analogue scale. Relationships between the surfer's perceptions of the fins and their surfing performance data collected from the tracking devices were then examined. The results revealed that participants preferred the single-grooved fins for Speed and Feel, followed by double-grooved fins, commercially available fins, and conventional fins without grooves. Crucially, the surfers' perceptions of their performance matched the objective data from the embedded sensors. Our findings demonstrate that accomplished surfers can perceive how changes to surfboard fins influence their surfing performance.
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Affiliation(s)
- James R Forsyth
- Biomechanics Research Laboratory, University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Grant Barnsley
- Australian Institute for Innovative Materials, University of Wollongong, Wollongong, 2522, Australia
| | - Mehrdad Amirghasemi
- SMART Infrastructure Facility, University of Wollongong, Wollongong, 2522, Australia
| | - Johan Barthelemy
- SMART Infrastructure Facility, University of Wollongong, Wollongong, 2522, Australia
| | - Alhoush Elshahomi
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Buyung Kosasih
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Pascal Perez
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Stephen Beirne
- Australian Institute for Innovative Materials, University of Wollongong, Wollongong, 2522, Australia
| | - Julie R Steele
- Biomechanics Research Laboratory, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Marc In Het Panhuis
- Surf Flex Lab, University of Wollongong, Wollongong, NSW, 2522, Australia.
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia.
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2
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Khakbaz H, Sayyar S, Beirne S, Heitzmann M, Innis PC. Toward Three-Dimensional Printed Thermal Conductive Polymeric Composites Using a Binary-Composite Hybrid Based on Boron Nitride Nanoparticles and Micro-Diamonds. Macromol Rapid Commun 2023; 44:e2300335. [PMID: 37666003 DOI: 10.1002/marc.202300335] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/30/2023] [Indexed: 09/06/2023]
Abstract
Thermally conductive polymeric composites are promising for heat management in microelectronic devices. This work presents a binary-hybrid composite of boron nitride (BN) nanoparticles and micro-diamond (D) fillers in an elastomeric polyurethane (PU) matrix which can be three- dimensionally printed to produce a highly flexible and self-supporting structure. The research shows that a combination of 16.7 wt% BN and 16.7 wt% D results in a robust network within the polymer matrix to improve the tensile modulus more than nine times with respect to neat PU. Significantly, the hybrid matrix enhances the thermal conductivity by more than two times when compared to neat PU. The enhancement in mechanical, and thermal features make this three-dimensional printable multiscale hybrid composite suitable for flexible and stretchable microelectronic applications.
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Affiliation(s)
- Hadis Khakbaz
- ARC Centre of Excellence for Electromaterials Science & Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW, 2500, Australia
- School of Mechanical and Mining Engineering, The University of Queensland, QLD, 4072, Australia
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, QLD, 4072, Australia
| | - Sepidar Sayyar
- ARC Centre of Excellence for Electromaterials Science & Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW, 2500, Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science & Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW, 2500, Australia
| | - Michael Heitzmann
- School of Mechanical and Mining Engineering, The University of Queensland, QLD, 4072, Australia
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, QLD, 4072, Australia
| | - Peter C Innis
- ARC Centre of Excellence for Electromaterials Science & Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW, 2500, Australia
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3
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Hai AM, Yue Z, Beirne S, Wallace G. Electrowriting of silk fibroin: Towards
3D
fabrication for tissue engineering applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.53349] [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: 11/12/2022]
Affiliation(s)
- Abdul Moqeet Hai
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus University of Wollongong Wollongong New South Wales Australia
- Institute of Polymer and Textile Engineering University of the Punjab Lahore Pakistan
| | - Zhilian Yue
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus University of Wollongong Wollongong New South Wales Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus University of Wollongong Wollongong New South Wales Australia
| | - Gordon Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus University of Wollongong Wollongong New South Wales Australia
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4
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You J, Frazer H, Sayyar S, Chen Z, Liu X, Taylor A, Filippi B, Beirne S, Wise I, Petsoglou C, Hodge C, Wallace G, Sutton G. Development of an In Situ Printing System With Human Platelet Lysate-Based Bio-Adhesive to Treat Corneal Perforations. Transl Vis Sci Technol 2022; 11:26. [PMID: 35767274 PMCID: PMC9251791 DOI: 10.1167/tvst.11.6.26] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Corneal perforation is a clinical emergency that can result in blindness. Currently corneal perforations are treated either by cyanoacrylate glue which is toxic to corneal cells, or by using commercial fibrin glue for small perforations. Both methods use manual delivery which lead to uncontrolled application of the glues to the corneal surface. Therefore, there is a need to develop a safe and effective alternative to artificial adhesives. Methods Previously, our group developed a transparent human platelet lysate (hPL)-based biomaterial that accelerated corneal epithelial cells healing in vitro. This biomaterial was further characterized in this study using rheometry and adhesive test, and a two-component delivery system was developed for its application. An animal trial (5 New Zealand white rabbits) to compare impact of the biomaterial and cyanoacrylate glue (control group) on a 2 mm perforation was conducted to evaluate safety and efficacy. Results The hPL-based biomaterial showed higher adhesiveness compared to commercial fibrin glue. Treatment rabbits had lower pain scores and faster recovery, despite generating similar scar-forming structure compared to controls. No secondary corneal ulcer was generated in rabbits treated with the bio-adhesive. Conclusions This study reports an in situ printing system capable of delivering a hPL-based, transparent bio-adhesive and successfully treating small corneal perforations. The bio-adhesive-treated rabbits recovered faster and required no additional analgesia. Translational Relevance The developed in situ hPL bio-adhesives treatment represents a new format of treating corneal perforation that is easy to use, allows for accurate application, and can be a potentially effective and pain relief treatment.
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Affiliation(s)
- Jingjing You
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, Australia
| | - Hannah Frazer
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, Australia
| | - Sepidar Sayyar
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia.,Australian National Fabrication Facility - Materials Node, Innovation Campus, University of Wollongong, Wollongong, Australia
| | - Zhi Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia
| | - Xiao Liu
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia
| | - Adam Taylor
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia.,Australian National Fabrication Facility - Materials Node, Innovation Campus, University of Wollongong, Wollongong, Australia
| | - Benjamin Filippi
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia.,Australian National Fabrication Facility - Materials Node, Innovation Campus, University of Wollongong, Wollongong, Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia.,Australian National Fabrication Facility - Materials Node, Innovation Campus, University of Wollongong, Wollongong, Australia
| | - Innes Wise
- Laboratory Animal Services, University of Sydney, Sydney, Australia
| | - Constantinos Petsoglou
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, Australia.,New South Wales Tissue Bank, Sydney, Australia
| | - Chris Hodge
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, Australia.,New South Wales Tissue Bank, Sydney, Australia.,Vision Eye Institute, Chatswood, New South Wales, Australia
| | - Gordon Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM, Innovation Campus, University of Wollongong, Wollongong, New South Wales, Australia.,Australian National Fabrication Facility - Materials Node, Innovation Campus, University of Wollongong, Wollongong, Australia
| | - Gerard Sutton
- Save Sight Institute, Sydney Medical School, University of Sydney, Sydney, Australia.,New South Wales Tissue Bank, Sydney, Australia.,Vision Eye Institute, Chatswood, New South Wales, Australia
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5
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Liu Y, Zhang S, Beirne S, Kim K, Qin C, Du Y, Zhou Y, Cheng Z, Wallace GG, Chen J. Wearable Photo-Thermo-Electrochemical Cells (PTECs) Harvesting Solar Energy. Macromol Rapid Commun 2022; 43:e2200001. [PMID: 35065001 DOI: 10.1002/marc.202200001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 01/14/2022] [Indexed: 11/11/2022]
Abstract
Solar induced thermal energy is a vital heat source supplementing body heat to realize thermo-to-electric energy supply for wearable electronics. Thermo-electrochemical cells (TECs), compared to the widely investigated thermoelectric generators (TEGs), show greater potential in wearable applications due to the higher voltage output from low-grade heat and the increased option range of cheap and flexible electrode/electrolyte materials. In this work, a wearable photo-thermo-electrochemical cell (PTEC) is firstly fabricated through the introduction of a polymer-based flexible photothermal film as a solar-absorber and hot electrode, followed by a systematic investigation of wearable device design. The as-prepared PTEC single device shows outstanding output voltage and current density of 15.0 mV and 10.8 A m-2 , 7.1 mV and 8.57 A m-2 , for the device employing p-type and n-type gel electrolytes, respectively. Benefiting from the equivalent performance in current density, a series connection containing 18 pairs of p-n PTEC devices is effectively made, which can harvest solar energy and charge supercapacitors to above 250 mV (1 sun solar illumination). Meanwhile, a watch-strap shaped flexible PTECs (8 p-n pairs) that can be worn on a wrist is fabricated, and the realised voltage above 150 mV under light shows the potential for use in wearable applications. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yuqing Liu
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Shuai Zhang
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
| | - Stephen Beirne
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
| | - Kyuman Kim
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
| | - Chunyan Qin
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
| | - Yumeng Du
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
| | - Yuetong Zhou
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
| | - Gordon G Wallace
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
| | - Jun Chen
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, Australian Institute for Innovative Materials, University of Wollongong, NSW, 2500, Australia
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6
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Zhang S, Zhou Y, Liu Y, Wallace GG, Beirne S, Chen J. All-polymer wearable thermoelectrochemical cells harvesting body heat. iScience 2021; 24:103466. [PMID: 34927022 PMCID: PMC8649731 DOI: 10.1016/j.isci.2021.103466] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/19/2021] [Accepted: 11/12/2021] [Indexed: 11/06/2022] Open
Abstract
Wearable thermoelectrochemical cells have attracted increasing interest due to their ability to turn human body heat into electricity. Here, we have fabricated a flexible, cost-effective, and 3D porous all-polymer electrode on an electrical conductive polymer substrate via a simple 3D printing method. Owing to the high degree of electrolyte penetration into the 3D porous electrode materials for redox reactions, the all-polymer based porous 3D electrodes deliver an increased power output of more than twice that of the film electrodes under the same mass loading using either n-type or p-type gel electrolytes. To realize the practical application of our thermocell, we fabricated 18 pairs of n-p devices through a series connection of single devices. The strap shaped thermocell arrangement was able to charge up a commercial supercapacitor to 0.27 V using the body heat of the person upon which it was being worn and in turn power a typical commercial lab timer. A compatible high electrical conductivity polymer film works as underlying substrate 3D printable polymer ink with suitable rheological properties A serial 18 pairs of n-p devices charged supercapacitor to power a lab timer 3D-printed all-polymer electrode thermocell device for harvesting body heat
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Affiliation(s)
- Shuai Zhang
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Yuetong Zhou
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Yuqing Liu
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Gordon G Wallace
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Stephen Beirne
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Jun Chen
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia
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7
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Wu L, Beirne S, Cabot JM, Paull B, Wallace GG, Innis PC. Fused filament fabrication 3D printed polylactic acid electroosmotic pumps. Lab Chip 2021; 21:3338-3351. [PMID: 34231640 DOI: 10.1039/d1lc00452b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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
Additive manufacturing (3D printing) offers a flexible approach for the production of bespoke microfluidic structures such as the electroosmotic pump. Here a readily accessible fused filament fabrication (FFF) 3D printing technique has been employed for the first time to produce microcapillary structures using low cost thermoplastics in a scalable electroosmotic pump application. Capillary structures were formed using a negative space 3D printing approach to deposit longitudinal filament arrangements with polylactic acid (PLA) in either "face-centre cubic" or "body-centre cubic" arrangements, where the voids deliberately formed within the deposited structure act as functional micro-capillaries. These 3D printed capillary structures were shown to be capable of functioning as a simple electroosmotic pump (EOP), where the maximum flow rate of a single capillary EOP was up to 1.0 μl min-1 at electric fields of up to 750 V cm-1. Importantly, higher flow rates were readily achieved by printing parallel multiplexed capillary arrays.
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Affiliation(s)
- Liang Wu
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, University of Wollongong, 2522 Australia.
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8
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Douman SF, De Eguilaz MR, Cumba LR, Beirne S, Wallace GG, Yue Z, Iwuoha EI, Forster RJ. Electrochemiluminescence at 3D Printed Titanium Electrodes. Front Chem 2021; 9:662810. [PMID: 34113601 PMCID: PMC8186460 DOI: 10.3389/fchem.2021.662810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 02/01/2021] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
The fabrication and electrochemical properties of a 3D printed titanium electrode array are described. The array comprises 25 round cylinders (0.015 cm radius, 0.3 cm high) that are evenly separated on a 0.48 × 0.48 cm square porous base (total geometric area of 1.32 cm2). The electrochemically active surface area consists of fused titanium particles and exhibits a large roughness factor ≈17. In acidic, oxygenated solution, the available potential window is from ~-0.3 to +1.2 V. The voltammetric response of ferrocyanide is quasi-reversible arising from slow heterogeneous electron transfer due to the presence of a native/oxidatively formed oxide. Unlike other metal electrodes, both [Ru(bpy)3]1+ and [Ru(bpy)3]3+ can be created in aqueous solutions which enables electrochemiluminescence to be generated by an annihilation mechanism. Depositing a thin gold layer significantly increases the standard heterogeneous electron transfer rate constant, ko, by a factor of ~80 to a value of 8.0 ± 0.4 × 10−3 cm s−1 and the voltammetry of ferrocyanide becomes reversible. The titanium and gold coated arrays generate electrochemiluminescence using tri-propyl amine as a co-reactant. However, the intensity of the gold-coated array is between 30 (high scan rate) and 100-fold (slow scan rates) higher at the gold coated arrays. Moreover, while the voltammetry of the luminophore is dominated by semi-infinite linear diffusion, the ECL response is significantly influenced by radial diffusion to the individual microcylinders of the array.
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Affiliation(s)
- Samantha F Douman
- National Centre for Sensor Research, Chemistry Department, Dublin City University, Dublin, Ireland.,SensorLab (University of the Western Cape Sensor Laboratories), University of Western Cape, Cape Town, South Africa
| | - Miren Ruiz De Eguilaz
- National Centre for Sensor Research, Chemistry Department, Dublin City University, Dublin, Ireland
| | - Loanda R Cumba
- National Centre for Sensor Research, Chemistry Department, Dublin City University, Dublin, Ireland
| | - Stephen Beirne
- Australian Research Council, Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Gordon G Wallace
- Australian Research Council, Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Zhilian Yue
- Australian Research Council, Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Emmanuel I Iwuoha
- SensorLab (University of the Western Cape Sensor Laboratories), University of Western Cape, Cape Town, South Africa
| | - Robert J Forster
- National Centre for Sensor Research, Chemistry Department, Dublin City University, Dublin, Ireland.,FutureNeuro SFI Research Centre, Dublin, Ireland
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9
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Douman SF, Collins D, Cumba LR, Beirne S, Wallace GG, Yue Z, Iwuoha EI, Melinato F, Pellegrin Y, Forster RJ. Wireless electrochemiluminescence at functionalised gold microparticles using 3D titanium electrode arrays. Chem Commun (Camb) 2021; 57:4642-4645. [PMID: 33876176 DOI: 10.1039/d1cc01010g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Wireless electrochemiluminescence is generated using interdigitated, 3D printed, titanium arrays as feeder electrodes to shape the electric field. Gold microparticles (45 μm diameter), functionalised with 11-mercaptoundecanoic acid, act as micro-emitters to generate electrochemiluminescence from [Ru(bpy)3]2+, (bpy is 2,2'-bipyridine) where the co-reactant is tripropylamine. The oxide coated titanium allows intense electric fields, whose distribution depends on the geometry of the array, to be created in the absence of deliberately added electrolyte. COMSOL modelling and long exposure ECL imaging have been used to map the electric field distribution. Significantly, we demonstrate that by controlling the surface charge of the gold microparticles through the solution pH, the light intensity can be increased by a factor of more than 10.
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Affiliation(s)
- Samantha F Douman
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, FutureNeuro SFI Research Centre, Dublin 9, Ireland. and SensorLab (UWC Sensor Laboratories), Chemical Sciences Building, University of Western Cape Town, Robert Sobukwe Road, Bellville 7535, Cape, South Africa
| | - David Collins
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, FutureNeuro SFI Research Centre, Dublin 9, Ireland.
| | - Loanda R Cumba
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, FutureNeuro SFI Research Centre, Dublin 9, Ireland.
| | - Stephen Beirne
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia
| | - Gordon G Wallace
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia
| | - Zhilian Yue
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia
| | - Emmanuel I Iwuoha
- SensorLab (UWC Sensor Laboratories), Chemical Sciences Building, University of Western Cape Town, Robert Sobukwe Road, Bellville 7535, Cape, South Africa
| | - Federica Melinato
- Université de Nantes, CEISAM, UMR CNRS 6230 UFR sciences and techniques, Nantes, France
| | - Yann Pellegrin
- Université de Nantes, CEISAM, UMR CNRS 6230 UFR sciences and techniques, Nantes, France
| | - Robert J Forster
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, FutureNeuro SFI Research Centre, Dublin 9, Ireland. and SensorLab (UWC Sensor Laboratories), Chemical Sciences Building, University of Western Cape Town, Robert Sobukwe Road, Bellville 7535, Cape, South Africa
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10
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Sideris A, Wallace G, Lam M, Kitipornchai L, Lewis R, Jones A, Jeiranikhameneh A, Hingley L, Beirne S, Mackay SG. 268 Smart polymer implants as an emerging technology for treating airway collapse in OSA: a proof of concept study. Sleep 2021. [DOI: 10.1093/sleep/zsab072.267] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Implantable 3D printed ‘smart’ polymers are an emerging technology with potential applications in treating collapse in adult obstructive sleep apnea through mechanical airway manipulation. There is a paucity of devices that are commercially available or in research and development stage. Limited studies have investigated the use of implantable smart polymers in reversing the collapsibility of the pharyngeal airway by creating counter forces during sleep. This paper describes an application of implantable magnetic polymer technology in an in-vivo porcine model. Study Objectives: To assess the use of a novel magnetic polymer implant in reversing airway collapse and identifying potential anatomical targets for airway implant surgery in an in-vivo porcine model.
Methods
Target sites of airway collapse were genioglossus muscle, hyoid bone and middle constrictor. Magnetic polymer implants were sutured to these sites and external magnetic forces, through magnets with pull forces rated at 102kg and 294kg, were applied at the skin. The resultant airway movement was assessed via nasendoscopy. Pharyngeal plexus branches to the middle constrictor muscle were stimulated at 0.5mA, 1.0mA and 2.0mA and airway movement assessed via nasendoscopy.
Results
At the genioglossus muscles large magnetic forces were required to produce airway movement. At the hyoid bone, anterior movement of the airway was noted when using a 294kg rated magnet. At the middle constrictor muscle, an anterolateral (or rotatory) pattern of airway movement was noted when using the same magnet. Stimulation of pharyngeal plexus branches to the middle constrictor revealed contraction and increasing rigidity of the lateral walls of the airway as stimulation amplitude increased. The resultant effect was prevention of collapse, a previously unidentified pattern of airway movement.
Conclusion
Surgically implanted smart polymers are an emerging technology showing promise in the treatment of airway collapse in obstructive sleep apnea. Future research should investigate their biomechanical role as an adjunct to treatment of airway collapse through nerve stimulation.
Support (if any)
Garnett-Passe and Rodney Williams Memorial Foundation, Conjoint Grant, 2016-18.
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Affiliation(s)
| | - Gordon Wallace
- ARC Centre for Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Innovation Campus
| | | | - Leon Kitipornchai
- Department of Otolaryngology Head and Neck Surgery The Wollongong Hospital
| | | | | | - Ali Jeiranikhameneh
- ARC Centre for Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Innovation Campus
| | - Lachlan Hingley
- ARC Centre for Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Innovation Campus
| | - Stephen Beirne
- ARC Centre for Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Innovation Campus
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11
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Zhou Y, Liu Y, Buckingham MA, Zhang S, Aldous L, Beirne S, Wallace G, Chen J. The significance of supporting electrolyte on poly (vinyl alcohol)–iron(II)/iron(III) solid-state electrolytes for wearable thermo-electrochemical cells. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.106938] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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12
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Sideris AW, Wallace G, Lam ME, Kitipornchai L, Lewis R, Jones A, Jeiranikhameneh A, Beirne S, Hingley L, Mackay S. Smart polymer implants as an emerging technology for treating airway collapse in obstructive sleep apnea: a pilot (proof of concept) study. J Clin Sleep Med 2021; 17:315-324. [PMID: 33118930 DOI: 10.5664/jcsm.8946] [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] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES To assess the use of a novel magnetic polymer implant in reversing airway collapse and identify potential anatomical targets for airway implant surgery in an in vivo porcine model. METHODS Target sites of airway collapse were genioglossus muscle, hyoid bone, and middle constrictor muscle. Magnetic polymer implants were sutured to these sites, and external magnetic forces, through magnets with pull forces rated at 102 kg and 294 kg, were applied at the skin. The resultant airway movement was assessed via nasendoscopy. Pharyngeal plexus branches to the middle constrictor muscle were stimulated at 0.5 mA, 1.0 mA, and 2.0 mA and airway movement assessed via nasendoscopy. RESULTS At the genioglossus muscles, large magnetic forces were required to produce airway movement. At the hyoid bone, anterior movement of the airway was noted when using a 294 kg rated magnet. At the middle constrictor muscle, an anterolateral (or rotatory) pattern of airway movement was noted when using the same magnet. Stimulation of pharyngeal plexus branches to the middle constrictor revealed contraction and increasing rigidity of the lateral walls of the airway as stimulation amplitude increased. The resultant effect was prevention of collapse as opposed to typical airway dilation, a previously unidentified pattern of airway movement. CONCLUSIONS Surgically implanted smart polymers are an emerging technology showing promise in the treatment of airway collapse in obstructive sleep apnea. Future research should investigate their biomechanical role as an adjunct to treatment of airway collapse through nerve stimulation.
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Affiliation(s)
- Anders William Sideris
- Department of Otolaryngology Head and Neck Surgery, The Wollongong Hospital, Wollongong, New South Wales, Australia.,Illawarra ENT Head and Neck Clinic, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District Wollongong, New South Wales, Australia
| | - Gordon Wallace
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, New South Wales, Australia
| | - Matthew Eugene Lam
- Department of Otolaryngology Head and Neck Surgery, The Wollongong Hospital, Wollongong, New South Wales, Australia.,Illawarra ENT Head and Neck Clinic, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District Wollongong, New South Wales, Australia
| | - Leon Kitipornchai
- Department of Otolaryngology Head and Neck Surgery, The Wollongong Hospital, Wollongong, New South Wales, Australia.,Illawarra ENT Head and Neck Clinic, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District Wollongong, New South Wales, Australia
| | - Richard Lewis
- Department of Otolaryngology Head and Neck Surgery, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Andrew Jones
- Illawarra ENT Head and Neck Clinic, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District Wollongong, New South Wales, Australia
| | - Ali Jeiranikhameneh
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, New South Wales, Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, New South Wales, Australia
| | - Lachlan Hingley
- School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia
| | - Stuart Mackay
- Department of Otolaryngology Head and Neck Surgery, The Wollongong Hospital, Wollongong, New South Wales, Australia.,Illawarra ENT Head and Neck Clinic, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District Wollongong, New South Wales, Australia.,School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia
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13
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Abstract
3D cellularized structures revealing dermal-like properties have been successfully printed using bioinks based on the sulfated polysaccharide ulvan from Australian green seaweed.
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Affiliation(s)
- Xifang Chen
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- Innovation Campus
- University of Wollongong
- Australia
| | - Zhilian Yue
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- Innovation Campus
- University of Wollongong
- Australia
| | - Pia C. Winberg
- Venus Shell Systems Pty Ltd
- Huskisson
- Australia
- School of Medicine
- Science
| | - Yan-Ru Lou
- Department of Clinical Pharmacy
- School of Pharmacy
- Fudan University
- Shanghai 201203
- P. R. China
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- Innovation Campus
- University of Wollongong
- Australia
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science
- Intelligent Polymer Research Institute
- Innovation Campus
- University of Wollongong
- Australia
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14
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Castilho M, de Ruijter M, Beirne S, Villette CC, Ito K, Wallace GG, Malda J. Multitechnology Biofabrication: A New Approach for the Manufacturing of Functional Tissue Structures? Trends Biotechnol 2020. [PMID: 32466965 DOI: 10.1016/jtibtech.2020.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
Most available 3D biofabrication technologies rely on single-component deposition methods, such as inkjet, extrusion, or light-assisted printing. It is unlikely that any of these technologies used individually would be able to replicate the complexity and functionality of living tissues. Recently, new biofabrication approaches have emerged that integrate multiple manufacturing technologies into a single biofabrication platform. This has led to fabricated structures with improved functionality. In this review, we provide a comprehensive overview of recent advances in the integration of different manufacturing technologies with the aim to fabricate more functional tissue structures. We provide our vision on the future of additive manufacturing (AM) technology, digital design, and the use of artificial intelligence (AI) in the field of biofabrication.
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Affiliation(s)
- Miguel Castilho
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands.
| | - Mylène de Ruijter
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands
| | - Stephen Beirne
- Intelligent Polymer Research Institute, and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, Australia
| | - Claire C Villette
- Structural Biomechanics, Department of Civil and Environmental Engineering, Imperial College London, London, UK
| | - Keita Ito
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands
| | - Gordon G Wallace
- Intelligent Polymer Research Institute, and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, Australia
| | - Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands; Department of Clinical Sciences, Faculty of Veterinary Sciences Utrecht University, Utrecht, The Netherlands
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15
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Qin C, Yue Z, Chao Y, Forster RJ, Maolmhuaidh FÓ, Huang XF, Beirne S, Wallace GG, Chen J. Data on the bipolar electroactive conducting polymers for wireless cell stimulation. Data Brief 2020; 33:106406. [PMID: 33088881 PMCID: PMC7567922 DOI: 10.1016/j.dib.2020.106406] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 08/25/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 02/01/2023] Open
Abstract
Data in this article is associated with our research article "Bipolar Electroactive Conducting Polymers for Wireless Cell Stimulation" [1]. Primarily, the present article shows the data of PPy-pTS, PPy-DS and PPy-DS/collagen in conventional electrochemical process and bipolar electrochemical process for comprehensive supplement and comparison to help with better understanding and developing conducting polymers based bipolar electrochemistry. Secondly, the presented data of bipolar electrostimulation (BPES) protocol development constitute the complete dataset useful for modeling the bipolar electroactive conducting polymers focusing on wireless cell stimulation, which are reported in the main article. All data reported were analysed using Origin 2018b 64Bit.
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Affiliation(s)
- Chunyan Qin
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2519, Australia
| | - Zhilian Yue
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2519, Australia
| | - Yunfeng Chao
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2519, Australia
| | - Robert J Forster
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Fionn Ó Maolmhuaidh
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Xu-Feng Huang
- Illawarra Health and Medical Research Institute, School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2519, Australia
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2519, Australia
| | - Jun Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2519, Australia
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16
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O’Connell CD, Konate S, Onofrillo C, Kapsa R, Baker C, Duchi S, Eekel T, Yue Z, Beirne S, Barnsley G, Di Bella C, Choong PF, Wallace GG. Free-form co-axial bioprinting of a gelatin methacryloyl bio-ink by direct in situ photo-crosslinking during extrusion. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.bprint.2020.e00087] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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17
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Castilho M, de Ruijter M, Beirne S, Villette CC, Ito K, Wallace GG, Malda J. Multitechnology Biofabrication: A New Approach for the Manufacturing of Functional Tissue Structures? Trends Biotechnol 2020; 38:1316-1328. [PMID: 32466965 DOI: 10.1016/j.tibtech.2020.04.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [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: 01/20/2020] [Revised: 04/03/2020] [Accepted: 04/29/2020] [Indexed: 01/25/2023]
Abstract
Most available 3D biofabrication technologies rely on single-component deposition methods, such as inkjet, extrusion, or light-assisted printing. It is unlikely that any of these technologies used individually would be able to replicate the complexity and functionality of living tissues. Recently, new biofabrication approaches have emerged that integrate multiple manufacturing technologies into a single biofabrication platform. This has led to fabricated structures with improved functionality. In this review, we provide a comprehensive overview of recent advances in the integration of different manufacturing technologies with the aim to fabricate more functional tissue structures. We provide our vision on the future of additive manufacturing (AM) technology, digital design, and the use of artificial intelligence (AI) in the field of biofabrication.
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Affiliation(s)
- Miguel Castilho
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands.
| | - Mylène de Ruijter
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands
| | - Stephen Beirne
- Intelligent Polymer Research Institute, and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, Australia
| | - Claire C Villette
- Structural Biomechanics, Department of Civil and Environmental Engineering, Imperial College London, London, UK
| | - Keita Ito
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands
| | - Gordon G Wallace
- Intelligent Polymer Research Institute, and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, Australia
| | - Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands; Regenerative Medicine Center Utrecht, Utrecht, The Netherlands; Department of Clinical Sciences, Faculty of Veterinary Sciences Utrecht University, Utrecht, The Netherlands
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18
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Hingley L, Jeiranikhameneh A, Beirne S, Peoples G, Jones A, Sayyar S, Eastwood P, Lewis R, Wallace G, MacKay SG. Modeling the upper airway: A precursor to personalized surgical interventions for the treatment of sleep apnea. J Biomed Mater Res A 2020; 108:1419-1425. [PMID: 32134556 DOI: 10.1002/jbm.a.36913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 08/03/2019] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 02/06/2023]
Abstract
An accurate benchtop model was developed to mimic the different forms of human upper airway collapse in adult sleep apnea patients. This was done via modeling the airway through digital imaging. Airway representative models were then produced in two steps via a customized pneumatic extrusion 3D printing system. This allowed the pressure of collapse and planes of collapse to be manipulated to accurately represent those seen in sleep apnea patients. The pressure flow relationships of the collapsible airways were then studied by inserting the collapsible airways into a module that allowed the chamber pressure (Pc ) around the airways to be increased in order to cause collapse. Airways collapsed at physiologically relevant pressures (5.32-9.58 cmH2 O). Nickel and iron magnetic polymers were then printed into the airway in order to investigate the altering of the airway collapse. The introduction of the nickel and iron magnetic polymers increased the pressure of collapse substantially (7.38-17.51 cmH2 O). Finally, the force produced by the interaction of the magnetic polymer and the magnetic module was studied by measuring a sample of the magnetic airways. The peak force in (48.59-163.34 cN) and the distance over which the forces initially registered (6.8-9.7 mm) were measured using a force transducer. This data set may be used to inform future treatment of sleep apnea, specifically the production of an implantable polymer for surgical intervention.
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Affiliation(s)
- Lachlan Hingley
- School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia
| | - Ali Jeiranikhameneh
- Australian Institute of Innovative Materials, University of Wollongong, Wollongong, New South Wales, Australia
| | - Stephen Beirne
- Australian Institute of Innovative Materials, University of Wollongong, Wollongong, New South Wales, Australia
| | - Gregory Peoples
- School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia
| | - Andrew Jones
- School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District, Wollongong, New South Wales, Australia
| | - Sepidar Sayyar
- Australian Institute of Innovative Materials, University of Wollongong, Wollongong, New South Wales, Australia
| | - Peter Eastwood
- Centre for Sleep Science, School of Human Sciences, University of Western Australia, Perth, Western Australia, Australia.,West Australian Sleep Disorders Research Institute, Sir Charles Gardiner Hospital, Perth, Western Australia, Australia
| | - Richard Lewis
- Department of Otolaryngology Head & Neck Surgery, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Gordon Wallace
- Australian Institute of Innovative Materials, University of Wollongong, Wollongong, New South Wales, Australia
| | - Stuart G MacKay
- School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia.,Illawarra Shoalhaven Local Health District, Wollongong, New South Wales, Australia.,Illawarra ENT Head and Neck Clinic, Wollongong, New South Wales, Australia
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19
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Tomaskovic‐Crook E, Zhang P, Ahtiainen A, Kaisvuo H, Lee C, Beirne S, Aqrawe Z, Svirskis D, Hyttinen J, Wallace GG, Travas‐Sejdic J, Crook JM. Neural Tissue Engineering: Human Neural Tissues from Neural Stem Cells Using Conductive Biogel and Printed Polymer Microelectrode Arrays for 3D Electrical Stimulation (Adv. Healthcare Mater. 15/2019). Adv Healthc Mater 2019. [DOI: 10.1002/adhm.201970062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eva Tomaskovic‐Crook
- ARC Centre of Excellence for Electromaterials ScienceIntelligent Polymer Research InstituteAIIM FacilityUniversity of Wollongong 2519 Australia
- Illawarra Health and Medical Research InstituteUniversity of Wollongong 2522 Australia
| | - Peikai Zhang
- Polymer Electronics Research CentreSchool of Chemical SciencesThe University of Auckland 1010 New Zealand
| | - Annika Ahtiainen
- Computational Biophysics and Imaging GroupBioMediTech Institute and Faculty of Biomedical Sciences and EngineeringTampere University of Technology Tampere 33720 Finland
| | - Heidi Kaisvuo
- Computational Biophysics and Imaging GroupBioMediTech Institute and Faculty of Biomedical Sciences and EngineeringTampere University of Technology Tampere 33720 Finland
| | - Chong‐Yong Lee
- ARC Centre of Excellence for Electromaterials ScienceIntelligent Polymer Research InstituteAIIM FacilityUniversity of Wollongong 2519 Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials ScienceIntelligent Polymer Research InstituteAIIM FacilityUniversity of Wollongong 2519 Australia
| | - Zaid Aqrawe
- School of PharmacyThe University of Auckland 1010 New Zealand
| | - Darren Svirskis
- School of PharmacyThe University of Auckland 1010 New Zealand
| | - Jari Hyttinen
- Computational Biophysics and Imaging GroupBioMediTech Institute and Faculty of Biomedical Sciences and EngineeringTampere University of Technology Tampere 33720 Finland
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials ScienceIntelligent Polymer Research InstituteAIIM FacilityUniversity of Wollongong 2519 Australia
| | - Jadranka Travas‐Sejdic
- Polymer Electronics Research CentreSchool of Chemical SciencesThe University of Auckland 1010 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology 6140 New Zealand
| | - Jeremy M. Crook
- ARC Centre of Excellence for Electromaterials ScienceIntelligent Polymer Research InstituteAIIM FacilityUniversity of Wollongong 2519 Australia
- Illawarra Health and Medical Research InstituteUniversity of Wollongong 2522 Australia
- Department of SurgerySt Vincent's HospitalThe University of Melbourne 3065 Australia
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20
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Tomaskovic‐Crook E, Zhang P, Ahtiainen A, Kaisvuo H, Lee C, Beirne S, Aqrawe Z, Svirskis D, Hyttinen J, Wallace GG, Travas‐Sejdic J, Crook JM. Human Neural Tissues from Neural Stem Cells Using Conductive Biogel and Printed Polymer Microelectrode Arrays for 3D Electrical Stimulation. Adv Healthc Mater 2019; 8:e1900425. [PMID: 31168967 DOI: 10.1002/adhm.201900425] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [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: 04/01/2019] [Revised: 05/03/2019] [Indexed: 11/09/2022]
Abstract
Electricity is important in the physiology and development of human tissues such as embryonic and fetal development, and tissue regeneration for wound healing. Accordingly, electrical stimulation (ES) is increasingly being applied to influence cell behavior and function for a biomimetic approach to in vitro cell culture and tissue engineering. Here, the application of conductive polymer (CP) poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT:PSS) pillars is described, direct-write printed in an array format, for 3D ES of maturing neural tissues that are derived from human neural stem cells (NSCs). NSCs are initially encapsulated within a conductive polysaccharide-based biogel interfaced with the CP pillar microelectrode arrays (MEAs), followed by differentiation in situ to neurons and supporting neuroglia during stimulation. Electrochemical properties of the pillar electrodes and the biogel support their electrical performance. Remarkably, stimulated constructs are characterized by widespread tracts of high-density mature neurons and enhanced maturation of functional neural networks. Formation of tissues using the 3D MEAs substantiates the platform for advanced clinically relevant neural tissue induction, with the system likely amendable to diverse cell types to create other neural and non-neural tissues. The platform may be useful for both research and translation, including modeling tissue development, function and dysfunction, electroceuticals, drug screening, and regenerative medicine.
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Affiliation(s)
- Eva Tomaskovic‐Crook
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility University of Wollongong 2519 Australia
- Illawarra Health and Medical Research Institute University of Wollongong 2522 Australia
| | - Peikai Zhang
- Polymer Electronics Research Centre School of Chemical Sciences The University of Auckland 1010 New Zealand
| | - Annika Ahtiainen
- Computational Biophysics and Imaging Group BioMediTech Institute and Faculty of Biomedical Sciences and Engineering Tampere University of Technology Tampere 33720 Finland
| | - Heidi Kaisvuo
- Computational Biophysics and Imaging Group BioMediTech Institute and Faculty of Biomedical Sciences and Engineering Tampere University of Technology Tampere 33720 Finland
| | - Chong‐Yong Lee
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility University of Wollongong 2519 Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility University of Wollongong 2519 Australia
| | - Zaid Aqrawe
- School of Pharmacy The University of Auckland 1010 New Zealand
| | - Darren Svirskis
- School of Pharmacy The University of Auckland 1010 New Zealand
| | - Jari Hyttinen
- Computational Biophysics and Imaging Group BioMediTech Institute and Faculty of Biomedical Sciences and Engineering Tampere University of Technology Tampere 33720 Finland
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility University of Wollongong 2519 Australia
| | - Jadranka Travas‐Sejdic
- Polymer Electronics Research Centre School of Chemical Sciences The University of Auckland 1010 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology 6140 New Zealand
| | - Jeremy M. Crook
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute AIIM Facility University of Wollongong 2519 Australia
- Illawarra Health and Medical Research Institute University of Wollongong 2522 Australia
- Department of Surgery St Vincent's Hospital The University of Melbourne 3065 Australia
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21
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Chen X, Yue Z, Winberg PC, Dinoro JN, Hayes P, Beirne S, Wallace GG. Development of rhamnose-rich hydrogels based on sulfated xylorhamno-uronic acid toward wound healing applications. Biomater Sci 2019; 7:3497-3509. [PMID: 31290861 DOI: 10.1039/c9bm00480g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An array of biological properties is demonstrated in the category of extracts broadly known as ulvans, including antibacterial, anti-inflammatory and anti-coagulant activities. However, the development of this category in biomedical applications is limited due to high structural variability across species and a lack of consistent and scalable sources. In addition, the modification and formulation of these molecules is still in its infancy with regard to progressing to product development. Here, a sulfated and rhamnose-rich, xylorhamno-uronic acid (XRU) extract from the cell wall of a controlled source of cultivated Australian ulvacean macroalgae resembles mammalian connective glycosaminoglycans. It is therefore a strong candidate for applications in wound healing and tissue regeneration. This study targets the development of polysaccharide modification for fabrication of 3D scaffolds for skin cell (fibroblast) culture. The XRU extract is methacrylated and UV-crosslinked to produce hydrogels with tuneable mechanical properties. The hydrogels demonstrate high cell viability and support cell proliferation over 14 days, which are far more functional than comparable alginate gels. Importantly, an XRU-based bioink is developed for extrusion printing 3D constructs both with and without cell encapsulation. These results highlight the close to product potential of this rhamnose-rich XRU extract as a promising biomaterial toward wound healing. Future studies should be focused on in-depth in vitro characterizations to examine the role of the material in dermal extracellular matrix (ECM) secretion of 3D printed structures, and in vivo characterizations to assess its capacity in supporting wound healing.
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Affiliation(s)
- Xifang Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW 2522, Australia.
| | - Zhilian Yue
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW 2522, Australia.
| | - Pia C Winberg
- Venus Shell Systems Pty Ltd, Mundamia, NSW 2540, Australia and School of Medicine, Science, Medicine & Health, University of Wollongong, Wollongong, NSW 2500, Australia
| | - Jeremy N Dinoro
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW 2522, Australia.
| | - Patricia Hayes
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW 2522, Australia.
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW 2522, Australia.
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, NSW 2522, Australia.
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22
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Liu X, Carter SD, Renes MJ, Kim J, Rojas‐Canales DM, Penko D, Angus C, Beirne S, Drogemuller CJ, Yue Z, Coates PT, Wallace GG. Pancreatic Islet Transplantation: Development of a Coaxial 3D Printing Platform for Biofabrication of Implantable Islet‐Containing Constructs (Adv. Healthcare Mater. 7/2019). Adv Healthc Mater 2019. [DOI: 10.1002/adhm.201970029] [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: 11/07/2022]
Affiliation(s)
- Xiao Liu
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
| | - Sarah‐Sophia D. Carter
- Intelligent Polymer Research InstituteARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
- Department of OrthopedicsUniversity Medical Center Utrecht Utrecht 3508 GA The Netherlands
| | - Max Jurie Renes
- Intelligent Polymer Research InstituteARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
- Department of OrthopedicsUniversity Medical Center Utrecht Utrecht 3508 GA The Netherlands
| | - Juewan Kim
- Department of Molecular & Cellular BiologySchool of Biological SciencesUniversity of Adelaide Adelaide 5005 Australia
| | - Darling Macarena Rojas‐Canales
- Department of MedicineUniversity of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation ServiceRoyal Adelaide Hospital Adelaide 5000 Australia
| | - Daniella Penko
- Department of MedicineUniversity of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation ServiceRoyal Adelaide Hospital Adelaide 5000 Australia
| | - Cameron Angus
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
| | - Stephen Beirne
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
| | - Christopher John Drogemuller
- Department of MedicineUniversity of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation ServiceRoyal Adelaide Hospital Adelaide 5000 Australia
| | - Zhilian Yue
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
| | - Patrick T. Coates
- Department of MedicineUniversity of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation ServiceRoyal Adelaide Hospital Adelaide 5000 Australia
| | - Gordon G. Wallace
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials ScienceUniversity of Wollongong Wollongong 2522 Australia
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23
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Liu X, Carter SD, Renes MJ, Kim J, Rojas‐Canales DM, Penko D, Angus C, Beirne S, Drogemuller CJ, Yue Z, Coates PT, Wallace GG. Development of a Coaxial 3D Printing Platform for Biofabrication of Implantable Islet-Containing Constructs. Adv Healthc Mater 2019; 8:e1801181. [PMID: 30633852 DOI: 10.1002/adhm.201801181] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [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: 09/21/2018] [Revised: 12/19/2018] [Indexed: 12/19/2022]
Abstract
Over the last two decades, pancreatic islet transplantations have become a promising treatment for Type I diabetes. However, although providing a consistent and sustained exogenous insulin supply, there are a number of limitations hindering the widespread application of this approach. These include the lack of sufficient vasculature and allogeneic immune attacks after transplantation, which both contribute to poor cell survival rates. Here, these issues are addressed using a biofabrication approach. An alginate/gelatin-based bioink formulation is optimized for islet and islet-related cell encapsulation and 3D printing. In addition, a custom-designed coaxial printer is developed for 3D printing of multicellular islet-containing constructs. In this work, the ability to fabricate 3D constructs with precise control over the distribution of multiple cell types is demonstrated. In addition, it is shown that the viability of pancreatic islets is well maintained after the 3D printing process. Taken together, these results represent the first step toward an improved vehicle for islet transplantation and a potential novel strategy to treat Type I diabetes.
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Affiliation(s)
- Xiao Liu
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
| | - Sarah‐Sophia D. Carter
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
- Department of Orthopedics University Medical Center Utrecht Utrecht 3508 GA The Netherlands
| | - Max Jurie Renes
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
- Department of Orthopedics University Medical Center Utrecht Utrecht 3508 GA The Netherlands
| | - Juewan Kim
- Department of Molecular & Cellular Biology School of Biological Sciences University of Adelaide Adelaide 5005 Australia
| | - Darling Macarena Rojas‐Canales
- Department of Medicine University of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation Service Royal Adelaide Hospital Adelaide 5000 Australia
| | - Daniella Penko
- Department of Medicine University of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation Service Royal Adelaide Hospital Adelaide 5000 Australia
| | - Cameron Angus
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
| | - Stephen Beirne
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
| | - Christopher John Drogemuller
- Department of Medicine University of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation Service Royal Adelaide Hospital Adelaide 5000 Australia
| | - Zhilian Yue
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
| | - Patrick T. Coates
- Department of Medicine University of Adelaide Adelaide 5000 Australia
- Central Northern Adelaide Renal and Transplantation Service Royal Adelaide Hospital Adelaide 5000 Australia
| | - Gordon G. Wallace
- Intelligent Polymer Research Institute ARC Centre of Excellence for Electromaterials Science University of Wollongong Wollongong 2522 Australia
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24
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Waheed S, Cabot JM, Smejkal P, Farajikhah S, Sayyar S, Innis PC, Beirne S, Barnsley G, Lewis TW, Breadmore MC, Paull B. Three-Dimensional Printing of Abrasive, Hard, and Thermally Conductive Synthetic Microdiamond-Polymer Composite Using Low-Cost Fused Deposition Modeling Printer. ACS Appl Mater Interfaces 2019; 11:4353-4363. [PMID: 30623658 DOI: 10.1021/acsami.8b18232] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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
A relative lack of printable materials with tailored functional properties limits the applicability of three-dimensional (3D) printing. In this work, a diamond-acrylonitrile butadiene styrene (ABS) composite filament for use in 3D printing was created through incorporation of high-pressure and high-temperature (HPHT) synthetic microdiamonds as a filler. Homogenously distributed diamond composite filaments, containing either 37.5 or 60 wt % microdiamonds, were formed through preblending the diamond powder with ABS, followed by subsequent multiple fiber extrusions. The thermal conductivity of the ABS base material increased from 0.17 to 0.94 W/(m·K), more than five-fold following incorporation of the microdiamonds. The elastic modulus for the 60 wt % microdiamond containing composite material increased by 41.9% with respect to pure ABS, from 1050 to 1490 MPa. The hydrophilicity also increased by 32%. A low-cost fused deposition modeling printer was customized to handle the highly abrasive composite filament by replacing the conventional (stainless-steel) filament feeding gear with a harder titanium gear. To demonstrate improved thermal performance of 3D printed devices using the new composite filament, a number of composite heat sinks were printed and characterized. Heat dissipation measurements demonstrated that 3D printed heat sinks containing 60 wt % diamond increased the thermal dissipation by 42%.
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Affiliation(s)
| | | | | | - Syamak Farajikhah
- ARC Centre of Excellence for Electromaterials Science (ACES), AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Sepidar Sayyar
- ARC Centre of Excellence for Electromaterials Science (ACES), AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Peter C Innis
- ARC Centre of Excellence for Electromaterials Science (ACES), AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science (ACES), AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , NSW 2500 , Australia
| | - Grant Barnsley
- ARC Centre of Excellence for Electromaterials Science (ACES), AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , NSW 2500 , Australia
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25
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van Tienderen GS, Berthel M, Yue Z, Cook M, Liu X, Beirne S, Wallace GG. Advanced fabrication approaches to controlled delivery systems for epilepsy treatment. Expert Opin Drug Deliv 2018; 15:915-925. [PMID: 30169981 DOI: 10.1080/17425247.2018.1517745] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Epilepsy is a chronic brain disease characterized by unprovoked seizures, which can have severe consequences including loss of awareness and death. Currently, 30% of epileptic patients do not receive adequate seizure alleviation from oral routes of medication. Over the last decade, local drug delivery to the focal area of the brain where the seizure originates has emerged as a potential alternative and may be achieved through the fabrication of drug-loaded polymeric implants for controlled on-site delivery. AREAS COVERED This review presents an overview of the latest advanced fabrication techniques for controlled drug delivery systems for refractory epilepsy treatment. Recent advances in the different techniques are highlighted and the limitations of the respective techniques are discussed. EXPERT OPINION Advances in biofabrication technologies are expected to enable a new paradigm of local drug delivery systems through offering high versatility in controlling drug release profiles, personalized customization and multi-drug incorporation. Tackling some of the current issues with advanced fabrication methods, including adhering to GMP-standards and industrial scale-up, together with innovative solutions for complex designs will see to the maturation of these techniques and result in increased clinical research into implant-based epilepsy treatment. ABBREVIATIONS GMP: Good manufacturing process; DDS(s): Drug delivery system(s); 3D: Three-dimensional; AEDs: Anti-epileptic drugs; BBB: Blood brain barrier; PLA: Polylactic acid; PLGA: Poly(lactic-co-glycolic acid); PCL: poly(ɛ-caprolactone); ESE: Emulsification solvent evaporation; O/W: Oil-in-water; W/O/W: Water-in-oil-in-water; DZP: Diazepam; PHT: Phenytoin; PHBV: Poly(hydroxybutyrate-hydroxyvalerate); PEG: Polyethylene glycol; SWD: Spike-and-wave discharges; CAD: Computer aided design; FDM: Fused deposition modeling; ABS: Acrylonitrile butadiene styren; eEVA: Ethylene-vinyl acetate; GelMA: Gelatin methacrylate; PVA: Poly-vinyl alcohol; PDMS: Polydimethylsiloxane; SLA: Stereolithography; SLS: Selective laser sintering.
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Affiliation(s)
- Gilles Sebastiaan van Tienderen
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia.,b Utrecht University , Utrecht , The Netherlands
| | - Marius Berthel
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia.,c Department for Functional Materials in Medicine and Dentistry , University Hospital Wuerzburg , Wurzburg , Germany
| | - Zhilian Yue
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia
| | - Mark Cook
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia.,d Medicine and Radiology , Clinical Neurosciences , Fitzroy , Australia.,e Department of Medicine , University of Melbourne , Fitzroy , Australia
| | - Xiao Liu
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia
| | - Stephen Beirne
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia
| | - Gordon G Wallace
- a ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility , University of Wollongong , Wollongong , Australia
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26
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Zhang Q, Beirne S, Shu K, Esrafilzadeh D, Huang XF, Wallace GG. Electrical Stimulation with a Conductive Polymer Promotes Neurite Outgrowth and Synaptogenesis in Primary Cortical Neurons in 3D. Sci Rep 2018; 8:9855. [PMID: 29959353 PMCID: PMC6026172 DOI: 10.1038/s41598-018-27784-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 01/08/2018] [Accepted: 05/31/2018] [Indexed: 11/08/2022] Open
Abstract
Deficits in neurite outgrowth and synaptogenesis have been recognized as an underlying developmental aetiology of psychosis. Electrical stimulation promotes neuronal induction including neurite outgrowth and branching. However, the effect of electrical stimulation using 3D electrodes on neurite outgrowth and synaptogenesis has not been explored. This study examined the effect of 3D electrical stimulation on 3D primary cortical neuronal cultures. 3D electrical stimulation improved neurite outgrowth in 3D neuronal cultures from both wild-type and NRG1-knockout (NRG1-KO) mice. The expression of synaptophysin and PSD95 were elevated under 3D electrical stimulation. Interestingly, 3D electrical stimulation also improved neural cell aggregation as well as the expression of PSA-NCAM. Our findings suggest that the 3D electrical stimulation system can rescue neurite outgrowth deficits in a 3D culturing environment, one that more closely resembles the in vivo biological system compared to more traditionally used 2D cell culture, including the observation of cell aggregates as well as the upregulated PSA-NCAM protein and transcript expression. This study provides a new concept for a possible diagnostic platform for neurite deficits in neurodevelopmental diseases, as well as a viable platform to test treatment options (such as drug delivery) in combination with electrical stimulation.
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Affiliation(s)
- Qingsheng Zhang
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia.
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.
| | - Stephen Beirne
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia
| | - Kewei Shu
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia
| | - Dorna Esrafilzadeh
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia
- Centre for Advanced Electronics and Sensors (CADES), School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Xu-Feng Huang
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
- Centre for Translational Neuroscience, School of Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Gordon G Wallace
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Squires Way, Fairy Meadow, NSW, 2519, Australia.
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27
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Steele JR, Gho SA, Campbell TE, Richards CJ, Beirne S, Spinks GM, Wallace GG. The Bionic Bra: Using electromaterials to sense and modify breast support to enhance active living. J Rehabil Assist Technol Eng 2018; 5:2055668318775905. [PMID: 31191941 PMCID: PMC6453067 DOI: 10.1177/2055668318775905] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/18/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Although the most supportive sports bras can control breast motion and associated breast pain, they are frequently deemed uncomfortable to wear and, as a result, many women report exercise bra discomfort. Given that exercise bra discomfort is associated with decreased levels of physical activity, there is a pertinent need to develop innovative solutions to address this problem. OBJECTIVES This research aimed to evaluate the use of electromaterial sensors and artificial muscle technology to create a bra that was capable of detecting increases in breast motion and then responding with increased breast support to enhance active living. METHODS The research involved two phases: (i) evaluating sensors suitable for monitoring and providing feedback on changes in the amplitude and frequency of breast motion, and (ii) evaluating an actuator capable of changing breast support provided by a bra during activity. RESULTS When assessed in isolation, the developed technologies were capable of sensing breast motion and actuating to provide some additional breast support. CONCLUSIONS The challenge now lies in integrating both technologies into a functional sports bra prototype, and assessing this prototype in a controlled biomechanical analysis to provide a breast support solution that will enable women to enjoy active living in comfort.
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Affiliation(s)
- Julie R Steele
- Biomechanics Research Laboratory, School
of Medicine,
Faculty
of Science, Medicine & Health, University of
Wollongong, Wollongong, Australia
| | - Sheridan A Gho
- Biomechanics Research Laboratory, School
of Medicine,
Faculty
of Science, Medicine & Health, University of
Wollongong, Wollongong, Australia
| | - Toni E Campbell
- ARC Centre of Excellence in
Electromaterials Science and Intelligent Polymer Research Institute, University of
Wollongong, Wollongong, Australia
| | - Christopher J Richards
- ARC Centre of Excellence in
Electromaterials Science and Intelligent Polymer Research Institute, University of
Wollongong, Wollongong, Australia
| | - Stephen Beirne
- ARC Centre of Excellence in
Electromaterials Science and Intelligent Polymer Research Institute, University of
Wollongong, Wollongong, Australia
| | - Geoffrey M Spinks
- ARC Centre of Excellence in
Electromaterials Science and Intelligent Polymer Research Institute, University of
Wollongong, Wollongong, Australia
| | - Gordon G Wallace
- ARC Centre of Excellence in
Electromaterials Science and Intelligent Polymer Research Institute, University of
Wollongong, Wollongong, Australia
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28
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Gupta V, Beirne S, Nesterenko PN, Paull B. Investigating the Effect of Column Geometry on Separation Efficiency using 3D Printed Liquid Chromatographic Columns Containing Polymer Monolithic Phases. Anal Chem 2017; 90:1186-1194. [PMID: 29231703 DOI: 10.1021/acs.analchem.7b03778] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Effect of column geometry on the liquid chromatographic separations using 3D printed liquid chromatographic columns with in-column polymerized monoliths has been studied. Three different liquid chromatographic columns were designed and 3D printed in titanium as 2D serpentine, 3D spiral, and 3D serpentine columns, of equal length and i.d. Successful in-column thermal polymerization of mechanically stable poly(BuMA-co-EDMA) monoliths was achieved within each design without any significant structural differences between phases. Van Deemter plots indicated higher efficiencies for the 3D serpentine chromatographic columns with higher aspect ratio turns at higher linear velocities and smaller analysis times as compared to their counterpart columns with lower aspect ratio turns. Computational fluid dynamic simulations of a basic monolithic structure indicated 44%, 90%, 100%, and 118% higher flow through narrow channels in the curved monolithic configuration as compared to the straight monolithic configuration at linear velocities of 1, 2.5, 5, and 10 mm s-1, respectively. Isocratic RPLC separations with the 3D serpentine column resulted in an average 23% and 245% (8 solutes) increase in the number of theoretical plates as compared to the 3D spiral and 2D serpentine columns, respectively. Gradient RPLC separations with the 3D serpentine column resulted in an average 15% and 82% (8 solutes) increase in the peak capacity as compared to the 3D spiral and 2D serpentine columns, respectively. Use of the 3D serpentine column at a higher flow rate, as compared to the 3D spiral column, provided a 58% reduction in the analysis time and 74% increase in the peak capacity for the isocratic separations of the small molecules and the gradient separations of proteins, respectively.
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Affiliation(s)
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong , Wollongong, NSW 2522, Australia
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29
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Javadi M, Gu Q, Naficy S, Farajikhah S, Crook JM, Wallace GG, Beirne S, Moulton SE. Conductive Tough Hydrogel for Bioapplications. Macromol Biosci 2017; 18. [DOI: 10.1002/mabi.201700270] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/01/2017] [Indexed: 01/07/2023]
Affiliation(s)
- Mohammad Javadi
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
| | - Qi Gu
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 P. R. China
| | - Sina Naficy
- School of Chemical and Biomolecular Engineering The University of Sydney Sydney New South Wales 2006 Australia
| | - Syamak Farajikhah
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
| | - Jeremy M. Crook
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
- Illawarra Health and Medical Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
- Department of Surgery St Vincent's Hospital The University of Melbourne Fitzroy Victoria 3065 Australia
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia
| | - Simon E. Moulton
- ARC Centre of Excellence for Electromaterials Science Faculty of Science Engineering and Technology Swinburne University of Technology Hawthorn Victoria 3122 Australia
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30
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Di Bella C, Duchi S, O'Connell CD, Blanchard R, Augustine C, Yue Z, Thompson F, Richards C, Beirne S, Onofrillo C, Bauquier SH, Ryan SD, Pivonka P, Wallace GG, Choong PF. In situ handheld three-dimensional bioprinting for cartilage regeneration. J Tissue Eng Regen Med 2017; 12:611-621. [PMID: 28512850 DOI: 10.1002/term.2476] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [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: 08/31/2016] [Revised: 05/04/2017] [Accepted: 05/09/2017] [Indexed: 12/19/2022]
Abstract
Articular cartilage injuries experienced at an early age can lead to the development of osteoarthritis later in life. In situ three-dimensional (3D) printing is an exciting and innovative biofabrication technology that enables the surgeon to deliver tissue-engineering techniques at the time and location of need. We have created a hand-held 3D printing device (biopen) that allows the simultaneous coaxial extrusion of bioscaffold and cultured cells directly into the cartilage defect in vivo in a single-session surgery. This pilot study assessed the ability of the biopen to repair a full-thickness chondral defect and the early outcomes in cartilage regeneration, and compared these results with other treatments in a large animal model. A standardized critical-sized full-thickness chondral defect was created in the weight-bearing surface of the lateral and medial condyles of both femurs of six sheep. Each defect was treated with one of the following treatments: (i) hand-held in situ 3D printed bioscaffold using the biopen (HH group), (ii) preconstructed bench-based printed bioscaffolds (BB group), (iii) microfractures (MF group) or (iv) untreated (control, C group). At 8 weeks after surgery, macroscopic, microscopic and biomechanical tests were performed. Surgical 3D bioprinting was performed in all animals without any intra- or postoperative complication. The HH biopen allowed early cartilage regeneration. The results of this study show that real-time, in vivo bioprinting with cells and scaffold is a feasible means of delivering a regenerative medicine strategy in a large animal model to regenerate articular cartilage.
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Affiliation(s)
- Claudia Di Bella
- Department of Surgery, University of Melbourne, Melbourne, Australia.,Orthopaedic Department, St Vincent's Hospital, Melbourne, Australia
| | - Serena Duchi
- Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Cathal D O'Connell
- ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Romane Blanchard
- Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Cheryl Augustine
- Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Zhilian Yue
- ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Fletcher Thompson
- ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Christopher Richards
- ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Carmine Onofrillo
- Department of Surgery, University of Melbourne, Melbourne, Australia.,ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Sebastien H Bauquier
- Translational Research and Animal Clinical Trial Study Group (TRACTS), Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, Australia
| | - Stewart D Ryan
- Translational Research and Animal Clinical Trial Study Group (TRACTS), Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, Australia
| | - Peter Pivonka
- Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterial Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, Australia
| | - Peter F Choong
- Department of Surgery, University of Melbourne, Melbourne, Australia.,Orthopaedic Department, St Vincent's Hospital, Melbourne, Australia
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31
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Zhang L, Kim T, Li N, Kang TJ, Chen J, Pringle JM, Zhang M, Kazim AH, Fang S, Haines C, Al-Masri D, Cola BA, Razal JM, Di J, Beirne S, MacFarlane DR, Gonzalez-Martin A, Mathew S, Kim YH, Wallace G, Baughman RH. High Power Density Electrochemical Thermocells for Inexpensively Harvesting Low-Grade Thermal Energy. Adv Mater 2017; 29:1605652. [PMID: 28121372 DOI: 10.1002/adma.201605652] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/03/2016] [Indexed: 06/06/2023]
Abstract
Continuously operating thermo-electrochemical cells (thermocells) are of interest for harvesting low-grade waste thermal energy because of their potentially low cost compared with conventional thermoelectrics. Pt-free thermocells devised here provide an output power of 12 W m-2 for an interelectrode temperature difference (ΔT) of 81 °C, which is sixfold higher power than previously reported for planar thermocells operating at ambient pressure.
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Affiliation(s)
- Long Zhang
- The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
- Sichuan New Material Research Center, Mianyang, Sichuan, 621000, China
| | - Taewoo Kim
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Na Li
- The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Tae June Kang
- Department of Mechanical Engineering, INHA University, Incheon, 22212, South Korea
| | - Jun Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, University of Wollongong, Innovation Campus, New South Wales, 2500, Australia
| | - Jennifer M Pringle
- ARC Centre of Excellence for Electromaterials Science, Deakin University, Geelong, Victoria, 3220, Australia
| | - Mei Zhang
- FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA
| | - Ali H Kazim
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Shaoli Fang
- The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Carter Haines
- The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Danah Al-Masri
- ARC Centre of Excellence for Electromaterials Science, Deakin University, Geelong, Victoria, 3220, Australia
| | - Baratunde A Cola
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Joselito M Razal
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3220, Australia
| | - Jiangtao Di
- The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, University of Wollongong, Innovation Campus, New South Wales, 2500, Australia
| | - Douglas R MacFarlane
- School of Chemistry and ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton, Victoria, 3800, Australia
| | | | - Sibi Mathew
- Lynntech, Inc, 2501 Earl Rudder Freeway South, College Station, TX, 77845, USA
| | - Yong Hyup Kim
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Gordon Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, University of Wollongong, Innovation Campus, New South Wales, 2500, Australia
| | - Ray H Baughman
- The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX, 75083, USA
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Pandav SS, Ross CM, Thattaruthody F, Nada R, Singh N, Gautam N, Beirne S, Wallace GG, Sherwood MB, Crowston JG, Coote M. Porosity of Bleb Capsule declines rapidly with Fluid Challenge. J Curr Glaucoma Pract 2016; 10:91-96. [PMID: 27857488 PMCID: PMC5104968 DOI: 10.5005/jp-journals-10008-1208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 04/10/2016] [Accepted: 06/16/2016] [Indexed: 12/02/2022] Open
Abstract
Introduction The porosity of the fibrous capsule around a glaucoma drainage device (GDD) may be the most important functional attribute. The factors that determine capsular porosity are not well understood. Failed GDD surgeries are usually associated with thick impervious capsules and components of aqueous have been implicated in this process. Purpose In this study, we interrogated the effect of passage of nonaqueous fluid on capsular porosity in mature (but aqueous naïve) blebs in a previously reported GDD model (the “Center for Eye Research Australia Implant”). Materials and methods The study was performed at two centers using 17 New Zealand White (NZW) rabbits. An experimental GDD was implanted into the subconjunctival space but without connection to the anterior chamber. After 28 days, balanced salt solution (BSS) was passed through the implant for 30 to 40 minutes at 12 mm Hg. Capsular porosity was measured as flow (μL/min) at a constant pressure. Porosity of the capsule was retested at 3 and 6 days. Results There was a marked reduction in capsular porosity within 3 days of exposure to BSS (fluid challenge). Even though the baseline porosity was significantly different in the two groups (3.00 ± 0.5 μL/min and 29.67 ± 12.12 μL/min, p < 0.001), the effect of passage of BSS was similar. Capsular porosity fell by approximately 80% in both groups from baseline after single BSS challenge. Capsular thickness was significantly less in Advanced Eye Center (AEC) rabbits at baseline. There was no change in the capsular thickness before and after single fluid challenge. Conclusion Passage of BSS at physiological pressures for under 40 minutes caused marked reduction in the porosity of the fibrous capsule within 3 days. This was not associated with any significant thickening of the fibrous capsule within this time frame. How to cite this article Pandav SS, Ross CM, Thattaruthody F, Nada R, Singh N, Gautam N, Beirne S, Wallace GG, Sherwood MB, Crowston JG, Coote M. Porosity of Bleb Capsule declines rapidly with Fluid Challenge. J Curr Glaucoma Pract 2016;10(3):91-96.
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Affiliation(s)
- Surinder S Pandav
- Professor, Advanced Eye Center, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Craig M Ross
- Research Fellow, Center for Eye Research Australia, University of Melbourne Melbourne, Victoria, Australia
| | - Faisal Thattaruthody
- Senior Registrar, Advanced Eye Center, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ritambhra Nada
- Professor, Department of Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Nirbhai Singh
- Assistant Professor, Advanced Eye Center, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Natasha Gautam
- Senior Registrar, Advanced Eye Center, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Stephen Beirne
- Senior Research Fellow, Intelligent Polymer Research Institute/AIIM Faculty, University of Wollongong, Wollongong, New South Wales, Australia
| | - Gordon G Wallace
- Professor, Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong Wollongong, New South Wales, Australia
| | - Mark B Sherwood
- Professor, Department of Ophthalmology, University of Florida, Gainesville Florida, United States
| | - Jonathan G Crowston
- Managing Director, Center for Eye Research Australia, University of Melbourne Melbourne, Victoria, Australia
| | - Michael Coote
- Associate Professor, Center for Eye Research Australia, University of Melbourne Melbourne, Victoria, Australia
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Schirmer KSU, Gorkin R, Beirne S, Stewart E, Thompson BC, Quigley AF, Kapsa RMI, Wallace GG. Cell compatible encapsulation of filaments into 3D hydrogels. Biofabrication 2016; 8:025013. [DOI: 10.1088/1758-5090/8/2/025013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Glennon T, O'Quigley C, McCaul M, Matzeu G, Beirne S, Wallace GG, Stroiescu F, O'Mahoney N, White P, Diamond D. ‘SWEATCH’: A Wearable Platform for Harvesting and Analysing Sweat Sodium Content. ELECTROANAL 2016. [DOI: 10.1002/elan.201600106] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tom Glennon
- Insight Centre for Data Analytics, National Centre for Sensor Research Dublin City University Dublin 9 Ireland
| | - Conor O'Quigley
- Insight Centre for Data Analytics, National Centre for Sensor Research Dublin City University Dublin 9 Ireland
| | - Margaret McCaul
- Insight Centre for Data Analytics, National Centre for Sensor Research Dublin City University Dublin 9 Ireland
| | - Giusy Matzeu
- Insight Centre for Data Analytics, National Centre for Sensor Research Dublin City University Dublin 9 Ireland
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science University of Wollongong NSW 2522 Australia
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science University of Wollongong NSW 2522 Australia
| | | | | | - Paddy White
- Shimmer DCU Innovation Campus, Glasnevin Dublin 11 Ireland
| | - Dermot Diamond
- Insight Centre for Data Analytics, National Centre for Sensor Research Dublin City University Dublin 9 Ireland
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O’Connell CD, Di Bella C, Thompson F, Augustine C, Beirne S, Cornock R, Richards CJ, Chung J, Gambhir S, Yue Z, Bourke J, Zhang B, Taylor A, Quigley A, Kapsa R, Choong P, Wallace GG. Development of the Biopen: a handheld device for surgical printing of adipose stem cells at a chondral wound site. Biofabrication 2016; 8:015019. [DOI: 10.1088/1758-5090/8/1/015019] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Gupta V, Talebi M, Deverell J, Sandron S, Nesterenko PN, Heery B, Thompson F, Beirne S, Wallace GG, Paull B. 3D printed titanium micro-bore columns containing polymer monoliths for reversed-phase liquid chromatography. Anal Chim Acta 2016; 910:84-94. [DOI: 10.1016/j.aca.2016.01.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/05/2016] [Accepted: 01/06/2016] [Indexed: 11/25/2022]
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Seyedin S, Razal JM, Innis PC, Jeiranikhameneh A, Beirne S, Wallace GG. Knitted Strain Sensor Textiles of Highly Conductive All-Polymeric Fibers. ACS Appl Mater Interfaces 2015; 7:21150-8. [PMID: 26334190 DOI: 10.1021/acsami.5b04892] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [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: 04/14/2023]
Abstract
A scaled-up fiber wet-spinning production of electrically conductive and highly stretchable PU/PEDOT:PSS fibers is demonstrated for the first time. The PU/PEDOT:PSS fibers possess the mechanical properties appropriate for knitting various textile structures. The knitted textiles exhibit strain sensing properties that were dependent upon the number of PU/PEDOT:PSS fibers used in knitting. The knitted textiles show sensitivity (as measured by the gauge factor) that increases with the number of PU/PEDOT:PSS fibers deployed. A highly stable sensor response was observed when four PU/PEDOT:PSS fibers were co-knitted with a commercial Spandex yarn. The knitted textile sensor can distinguish different magnitudes of applied strain with cyclically repeatable sensor responses at applied strains of up to 160%. When used in conjunction with a commercial wireless transmitter, the knitted textile responded well to the magnitude of bending deformations, demonstrating potential for remote strain sensing applications. The feasibility of an all-polymeric knitted textile wearable strain sensor was demonstrated in a knee sleeve prototype with application in personal training and rehabilitation following injury.
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Affiliation(s)
- Shayan Seyedin
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong , Wollongong, New South Wales 2522, Australia
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3216, Australia
| | - Joselito M Razal
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong , Wollongong, New South Wales 2522, Australia
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3216, Australia
| | - Peter C Innis
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong , Wollongong, New South Wales 2522, Australia
| | - Ali Jeiranikhameneh
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong , Wollongong, New South Wales 2522, Australia
| | - Stephen Beirne
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong , Wollongong, New South Wales 2522, Australia
| | - Gordon G Wallace
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong , Wollongong, New South Wales 2522, Australia
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Ross C, Pandav SS, Li YQ, Nguyen DQ, Beirne S, Wallace GG, Shaarawy T, Crowston JG, Coote M. Determination of bleb capsule porosity with an experimental glaucoma drainage device and measurement system. JAMA Ophthalmol 2015; 133:549-54. [PMID: 25719729 DOI: 10.1001/jamaophthalmol.2015.30] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Control of intraocular pressure after implantation of a glaucoma drainage device (GDD) depends on the porosity of the capsule that forms around the plate of the GDD. OBJECTIVE To compare capsular porosity after insertion of 2 different GDDs using a novel implant and measurement system. DESIGN, SETTING, AND SUBJECTS We performed an experimental interventional study at an eye research facility in a tertiary eye care center. Testing was performed on 22 adult New Zealand white rabbits that received the experimental GDD or an existing GDD. INTERVENTIONS A new experimental GDD, the Center for Eye Research Australia (CERA) implant, was created using computer-aided design and a 3-dimensional printer. The CERA GDDs were implanted in the eyes of rabbits randomized into 1 of the following 3 groups: with no connection to the anterior chamber (n = 7), with connection to the anterior chamber for 1 week (n = 5), and with connection to the anterior chamber for 4 weeks (n = 5). In a control group (n = 5), a pediatric GDD was implanted without connection to the anterior chamber. We measured the capsular porosity using a pressure-gated picoliter pump at a driving pressure of 12 mm Hg. The animals were killed humanely for histologic study. MAIN OUTCOMES AND MEASURES Porosity of the fibrous capsule around the implant. RESULTS We found no difference in mean (SEM) capsular porosity between the CERA (3.39 [0.76; 95% CI, 1.43-5.48] µL/min) and pediatric (4.52 [0.52; 95% CI, 3.19-5.95] µL/min) GDDs (P = .28, unpaired t test) at 4 weeks without aqueous exposure. Mean (SEM) capsular porosity of CERA GDDs connected to the anterior chamber at 1 week was 2.46 (0.36; 95% CI, 1.55-3.44) µL/min but decreased to 0.67 (0.07; 95% CI, 0.49-0.86) µL/min at 4 weeks (P = .001, unpaired t test). CONCLUSIONS AND RELEVANCE Our experimental method permits direct measurement of capsular porosity of an in situ GDD. In a comparison between an experimental (CERA) and an existing GDD, no differences were identified in capsular porosity or histologic reaction between the implants. These results suggest that the CERA GDD model can be used to test key components of glaucoma surgery and implant design.
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Affiliation(s)
- Craig Ross
- Centre for Eye Research Australia, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, University of Melbourne, Melbourne, Australia
| | - Surinder Singh Pandav
- Centre for Eye Research Australia, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, University of Melbourne, Melbourne, Australia2Advanced Eye Center, Postgraduate Institute of Medical Education & Research, Chandigarh, India
| | - Yu Qin Li
- Centre for Eye Research Australia, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, University of Melbourne, Melbourne, Australia
| | - Dan Q Nguyen
- Centre for Eye Research Australia, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, University of Melbourne, Melbourne, Australia3Department of Ophthalmology, Mid-Cheshire Hospitals NHS Foundation Trust, Leighton, England4Institute for S
| | - Stephen Beirne
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian National Fabrication Facility Materials Node, Australian Institute for Innovative Materials Facility, Innovation Campus, University of Wollongong, Wo
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian National Fabrication Facility Materials Node, Australian Institute for Innovative Materials Facility, Innovation Campus, University of Wollongong, Wo
| | - Tarek Shaarawy
- Glaucoma Sector, Service d'ophtalmologie, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Jonathan G Crowston
- Centre for Eye Research Australia, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, University of Melbourne, Melbourne, Australia
| | - Michael Coote
- Centre for Eye Research Australia, Department of Ophthalmology, Royal Victorian Eye and Ear Hospital, University of Melbourne, Melbourne, Australia
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Sandron S, Heery B, Gupta V, Collins DA, Nesterenko EP, Nesterenko PN, Talebi M, Beirne S, Thompson F, Wallace GG, Brabazon D, Regan F, Paull B. 3D printed metal columns for capillary liquid chromatography. Analyst 2015; 139:6343-7. [PMID: 25285334 DOI: 10.1039/c4an01476f] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coiled planar capillary chromatography columns (0.9 mm I.D. × 60 cm L) were 3D printed in stainless steel (316L), and titanium (Ti-6Al-4V) alloys (external dimensions of ~5 × 30 × 58 mm), and either slurry packed with various sized reversed-phase octadecylsilica particles, or filled with an in situ prepared methacrylate based monolith. Coiled printed columns were coupled directly with 30 × 30 mm Peltier thermoelectric direct contact heater/cooler modules. Preliminary results show the potential of using such 3D printed columns in future portable chromatographic devices.
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Affiliation(s)
- S Sandron
- Australian Centre for Research on Separation Sciences (ACROSS), and ARC Centre of Excellence for Electromaterials Science, School of Physical Sciences, University of Tasmania, Australia.
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Zhao C, Wang C, Gorkin R, Beirne S, Shu K, Wallace GG. Three dimensional (3D) printed electrodes for interdigitated supercapacitors. Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.01.013] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
An inherent difficulty associated with the application of suitable bioscaffolds for tissue engineering is the incorporation of adequate mechanical characteristics into the materials which recapitulate that of the native tissue, whilst maintaining cell proliferation and nutrient transfer qualities. Biomaterial composites fabricated using rapid prototyping techniques can potentially improve the functionality and patient-specific processing of tissue engineering scaffolds. In this work, a technique for the coaxial melt extrusion printing of core-shell scaffold structures was designed, implemented and assessed with respect to the repeatability, cell efficacy and scaffold porosity obtainable. Encapsulated alginate hydrogel/thermoplastic polycaprolactone (Alg-PCL) cofibre scaffolds were fabricated. Selective laser melting was used to produce a high resolution stainless steel 316 L coaxial extrusion nozzle, exhibiting diameters of 300 μm/900 μm for the inner and outer nozzles respectively. We present coaxial melt extrusion printed scaffolds of Alg-PCL cofibres with ~0.4 volume fraction alginate, with total fibre diameter as low as 600 μm and core material offset as low as 10% of the total diameter. Furthermore the tuneability of scaffold porosity, pore size and interconnectivity, as well as the preliminary inclusion, compatibility and survival of an L-929 mouse fibroblast cell-line within the scaffolds were explored. This preliminary cell work highlighted the need for optimal material selection and further design reiteration in future research.
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Affiliation(s)
- R Cornock
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia
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Romano MS, Li N, Antiohos D, Razal JM, Nattestad A, Beirne S, Fang S, Chen Y, Jalili R, Wallace GG, Baughman R, Chen J. Carbon Nanotube - Reduced Graphene Oxide Composites for Thermal Energy Harvesting Applications. Adv Mater 2013; 25:6602-6. [PMID: 24167027 DOI: 10.1002/adma.201303295] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Indexed: 05/22/2023]
Affiliation(s)
- Mark S. Romano
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Na Li
- Institute of Polymer Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Dennis Antiohos
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Joselito M. Razal
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Andrew Nattestad
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Stephen Beirne
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Shaoli Fang
- Alan G. MacDiarmid NanoTech Institute; University of Texas at Dallas; Richardson Texas 75080 USA
| | - Yongsheng Chen
- Institute of Polymer Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Rouhollah Jalili
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Gordon G. Wallace
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
| | - Ray Baughman
- Alan G. MacDiarmid NanoTech Institute; University of Texas at Dallas; Richardson Texas 75080 USA
| | - Jun Chen
- Intelligent Polymer Research Institute; ARC Centre of Excellence for Electromaterials Science; Australian Institute of Innovative Materials; Innovation Campus; University of Wollongong; Northfields Avenue Wollongong NSW 2522 Australia
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Bakarich SE, Panhuis MIH, Beirne S, Wallace GG, Spinks GM. Extrusion printing of ionic–covalent entanglement hydrogels with high toughness. J Mater Chem B 2013; 1:4939-4946. [DOI: 10.1039/c3tb21159b] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ferris CJ, Gilmore KJ, Beirne S, McCallum D, Wallace GG, in het Panhuis M. Bio-ink for on-demand printing of living cells. Biomater Sci 2013; 1:224-230. [DOI: 10.1039/c2bm00114d] [Citation(s) in RCA: 161] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Fay C, Doherty AR, Beirne S, Collins F, Foley C, Healy J, Kiernan BM, Lee H, Maher D, Orpen D, Phelan T, Qiu Z, Zhang K, Gurrin C, Corcoran B, O’Connor NE, Smeaton AF, Diamond D. Remote real-time monitoring of subsurface landfill gas migration. Sensors (Basel) 2011; 11:6603-28. [PMID: 22163975 PMCID: PMC3231696 DOI: 10.3390/s110706603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 06/15/2011] [Accepted: 06/16/2011] [Indexed: 12/04/2022]
Abstract
The cost of monitoring greenhouse gas emissions from landfill sites is of major concern for regulatory authorities. The current monitoring procedure is recognised as labour intensive, requiring agency inspectors to physically travel to perimeter borehole wells in rough terrain and manually measure gas concentration levels with expensive hand-held instrumentation. In this article we present a cost-effective and efficient system for remotely monitoring landfill subsurface migration of methane and carbon dioxide concentration levels. Based purely on an autonomous sensing architecture, the proposed sensing platform was capable of performing complex analytical measurements in situ and successfully communicating the data remotely to a cloud database. A web tool was developed to present the sensed data to relevant stakeholders. We report our experiences in deploying such an approach in the field over a period of approximately 16 months.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Alan F. Smeaton
- Author to whom correspondence should be addressed; E-Mails: (A.F.S.); (D.D.)
| | - Dermot Diamond
- Author to whom correspondence should be addressed; E-Mails: (A.F.S.); (D.D.)
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