1
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Xu K, Wu X, Zhang X, Xing M. Bridging wounds: tissue adhesives' essential mechanisms, synthesis and characterization, bioinspired adhesives and future perspectives. BURNS & TRAUMA 2022; 10:tkac033. [PMID: 36225327 PMCID: PMC9548443 DOI: 10.1093/burnst/tkac033] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 04/29/2022] [Indexed: 11/05/2022]
Abstract
Bioadhesives act as a bridge in wound closure by forming an effective interface to protect against liquid and gas leakage and aid the stoppage of bleeding. To their credit, tissue adhesives have made an indelible impact on almost all wound-related surgeries. Their unique properties include minimal damage to tissues, low chance of infection, ease of use and short wound-closure time. In contrast, classic closures, like suturing and stapling, exhibit potential additional complications with long operation times and undesirable inflammatory responses. Although tremendous progress has been made in the development of tissue adhesives, they are not yet ideal. Therefore, highlighting and summarizing existing adhesive designs and synthesis, and comparing the different products will contribute to future development. This review first provides a summary of current commercial traditional tissue adhesives. Then, based on adhesion interaction mechanisms, the tissue adhesives are categorized into three main types: adhesive patches that bind molecularly with tissue, tissue-stitching adhesives based on pre-polymer or precursor solutions, and bioinspired or biomimetic tissue adhesives. Their specific adhesion mechanisms, properties and related applications are discussed. The adhesion mechanisms of commercial traditional adhesives as well as their limitations and shortcomings are also reviewed. Finally, we also discuss the future perspectives of tissue adhesives.
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Affiliation(s)
- Kaige Xu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Xiaozhuo Wu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Xingying Zhang
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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2
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Chen F, Han L, Dong Y, Wang X. Biomimetic Self-Adhesive Structures for Wearable Sensors. BIOSENSORS 2022; 12:bios12060431. [PMID: 35735578 PMCID: PMC9221519 DOI: 10.3390/bios12060431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 11/16/2022]
Abstract
Inspired by the adhesion ability of various organisms in nature, the research of biomimetic adhesion has shown a promising application prospect in fields such as manipulators, climbing robots and wearable medical devices. In order to achieve effective adhesion between human skin and a variety of wearable sensors, two natural creatures, octopus and mussel, were selected for bio-imitation in this paper. Through imitating the octopus sucker structure, a micro-cavity array with a large inner cavity and small outer cavity was designed. The fabrication was completed by double-layer adhesive photolithography and PDMS molding, and the adhesion capacity of the structure was further enhanced by the coating of thermal responsive hydrogel PNIPAM. The adhesive force of 3.91 N/cm2 was obtained in the range of the human body temperature. PDA-Lap-PAM hydrogel was prepared by combining mussel foot protein (Mfps) with nano-clay (Lap) as biomimetic mussel mucus. It was found that 0.02 g PDA-Lap-PAM hydrogel can obtain about 2.216 N adhesion, with good hydrophilicity. Through oxygen plasma surface treatment and functional silane surface modification, the fusion of the PDMS film with biomimetic octopus sucker structure and the biomimetic mussel mucus hydrogel patch was realized. The biomimetic octopus sucker structure was attached to the human skin surface to solve the problem of shape-preserving attachment, and the biomimetic mussel mucus hydrogel was attached to the sensor surface to solve the problem of sensor surface adaptation. The fusion structure was used to attach a rigid substrate piezoelectric sensor to the skin for a human pulsewave test. The results verified the self-adhesion feasibility of wearable sensors with biomimetic structures.
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3
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Li J, Hu Y, Yu L, Li L, Ji D, Li L, Hu W, Fuchs H. Recent Advances of Nanospheres Lithography in Organic Electronics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100724. [PMID: 34018680 DOI: 10.1002/smll.202100724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Nanospheres lithography (NSL) is an economical technique, which makes use of highly monodispersed nanospheres such as deposition or etch masks for generating patterns with nanoscale features. Embedding nanostructures into organic electronic devices can endow them with unique capabilities and enhanced performance, which have greatly advanced the development of organic electronics. In this review, a brief summary of the methods for the preparation of monodispersed nanospheres is presented. Afterward, the authors highlight the recent advances of a wide variety of applications of nanospheres lithography in organic electronic devices. Finally, the challenges in this field are pointed out, and the future development of this field is discussed.
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Affiliation(s)
- Jie Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yongxu Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Li Yu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Lin Li
- Institute of Molecular Plus, Tianjin University, Tianjin, 300072, China
| | - Deyang Ji
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
- Beijing National Laboratory for Molecular Sciences, Beijing, 100190, China
| | - Liqiang Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Harald Fuchs
- Physikalisches Institut, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Straße 10, 48149, Münster, Germany
- Center for Nanotechnology, Heisenbergstraße 11, 48149, Münster, Germany
- Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NWPU), 127 West Youyi Road, Xi'an, 710072, China
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4
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Qiao S, Wang L, Ha KH, Lu N. Suction effects of craters under water. SOFT MATTER 2018; 14:8509-8520. [PMID: 30349915 DOI: 10.1039/c8sm01601a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Octopus-inspired cratered surfaces have recently emerged as a new class of reusable physical adhesives. Preload-dependent adhesion and enhanced adhesion under water distinguish them from the well-studied gecko-inspired pillared surfaces. Despite growing experimental evidence, modeling frameworks and mechanistic understanding of cratered surfaces are still very limited. We recently developed a framework to evaluate suction forces produced by isolated craters in air. In this paper, we focus on underwater craters. The suction force-preload relation predicted by this framework has been validated by experiments carried out with an incompressible fluid under small and moderate preloads. Our model breaks down under a large preload due to multiple possible reasons including liquid vaporization. A direct comparison between liquid and air-filled craters has been carried out and the dependence on the depth of water has been revealed. We find that the suction forces generated by underwater craters scale with the specimen modulus but exhibit non-monotonic dependence on the aspect ratio of the craters.
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Affiliation(s)
- Shutao Qiao
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, the University of Texas at Austin, 210 E. 24th St, Austin, TX 78712, USA.
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5
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Tunable Adhesion for Bio-Integrated Devices. MICROMACHINES 2018; 9:mi9100529. [PMID: 30424462 PMCID: PMC6215118 DOI: 10.3390/mi9100529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 10/14/2018] [Accepted: 10/16/2018] [Indexed: 02/03/2023]
Abstract
With the rapid development of bio-integrated devices and tissue adhesives, tunable adhesion to soft biological tissues started gaining momentum. Strong adhesion is desirable when used to efficiently transfer vital signals or as wound dressing and tissue repair, whereas weak adhesion is needed for easy removal, and it is also the essential step for enabling repeatable use. Both the physical and chemical properties (e.g., moisture level, surface roughness, compliance, and surface chemistry) vary drastically from the skin to internal organ surfaces. Therefore, it is important to strategically design the adhesive for specific applications. Inspired largely by the remarkable adhesion properties found in several animal species, effective strategies such as structural design and novel material synthesis were explored to yield adhesives to match or even outperform their natural counterparts. In this mini-review, we provide a brief overview of the recent development of tunable adhesives, with a focus on their applications toward bio-integrated devices and tissue adhesives.
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Hwang I, Kim HN, Seong M, Lee SH, Kang M, Yi H, Bae WG, Kwak MK, Jeong HE. Multifunctional Smart Skin Adhesive Patches for Advanced Health Care. Adv Healthc Mater 2018; 7:e1800275. [PMID: 29757494 DOI: 10.1002/adhm.201800275] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/12/2018] [Indexed: 12/21/2022]
Abstract
A skin adhesive patch is the most fundamental and widely used medical device for diverse health-care purposes. Conventional skin adhesive patches have been mainly utilized for routine medical purposes such as wound management, fixation of medical devices, and simple drug release. In contrast to traditional skin adhesive patches, recently developed patches incorporate multiple key functions of bulky medical devices into a thin, flexible patch based on emerging nanomaterials and flexible electronic technologies. Consequently, the meaning of the term "skin adhesive patch" becomes broader and smarter compared to the traditional term. This review summarizes recent efforts undertaken in the development of multifunctional advanced skin adhesive patches, and briefly describes future directions and challenges toward the next generation of smart skin adhesive patches for ubiquitous personalized health care.
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Affiliation(s)
- Insol Hwang
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Hong Nam Kim
- Center for BioMicrosystems; Brain Science Institute; Korea Institute of Science and Technology (KIST); Seoul 136-791 Republic of Korea
| | - Minho Seong
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Sang-Hyeon Lee
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Minsu Kang
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Hoon Yi
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Won Gyu Bae
- School of Electrical Engineering; Soongsil University (SSU); Seoul 06978 Republic of Korea
| | - Moon Kyu Kwak
- Department of Mechanical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
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7
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Qiao S, Wang L, Jeong H, Rodin GJ, Lu N. Suction effects in cratered surfaces. J R Soc Interface 2018; 14:rsif.2017.0377. [PMID: 29021159 DOI: 10.1098/rsif.2017.0377] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/12/2017] [Indexed: 11/12/2022] Open
Abstract
It has been shown experimentally that cratered surfaces may have better adhesion properties than flat ones. However, the suction effect produced by the craters, which may be chiefly responsible for the improved adhesion, has not been properly modelled. This paper combines experimental, numerical simulation and analytical approaches towards developing a framework for quantifying the suction effect produced by isolated craters and cratered surfaces. The modelling approach emphasizes the essential role of large elastic deformation, while the airflow dynamics, microscopic mechanisms, like surface tension and air permeation, and rate-dependence are neglected. This approach is validated using experimental data for isolated hemi-spherical craters. The modelling approach is further applied to spherical cap (not necessarily hemi-spherical) craters with the objective of identifying optimal geometric and material properties, as well as the minimum preload necessary for attaining the maximum suction force. It is determined that stiff polymers with deep craters are capable of producing large suction forces. For soft materials, central to biomedical applications, large suction forces can be attained by reinforcing deep craters with thin stiff layers. Parametric optimization studies of reinforced craters reveal that some of them perform beyond common expectations. However, those high-performance reinforced craters are prone to surface instabilities, and therefore the practical use of such craters may be problematic.
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Affiliation(s)
- Shutao Qiao
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX 78712, USA
| | - Liu Wang
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX 78712, USA
| | - Hyoyoung Jeong
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Gregory J Rodin
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX 78712, USA .,Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, TX 78712, USA.,Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Nanshu Lu
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, TX 78712, USA .,Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA.,Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA.,Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
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8
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Oh JH, Hong SY, Park H, Jin SW, Jeong YR, Oh SY, Yun J, Lee H, Kim JW, Ha JS. Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7263-7270. [PMID: 29400434 DOI: 10.1021/acsami.7b17727] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, we demonstrate the fabrication of a highly sensitive flexible temperature sensor with a bioinspired octopus-mimicking adhesive. A resistor-type temperature sensor consisting of a composite of poly(N-isopropylacrylamide) (pNIPAM)-temperature sensitive hydrogel, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and carbon nanotubes exhibits a very high thermal sensitivity of 2.6%·°C-1 between 25 and 40 °C so that the change in skin temperature of 0.5 °C can be accurately detected. At the same time, the polydimethylsiloxane adhesive layer of octopus-mimicking rim structure coated with pNIPAM is fabricated through the formation of a single mold by utilizing undercut phenomenon in photolithography. The fabricated sensor shows stable and reproducible detection of skin temperature under repeated attachment/detachment cycles onto skin without any skin irritation for a long time. This work suggests a high potential application of our skin-attachable temperature sensor to wearable devices for medical and health-care monitoring.
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Affiliation(s)
- Ju Hyun Oh
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Soo Yeong Hong
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Heun Park
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Sang Woo Jin
- KU-KIST Graduate School of Converging Science and Technology , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Yu Ra Jeong
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Seung Yun Oh
- KU-KIST Graduate School of Converging Science and Technology , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Junyeong Yun
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Hanchan Lee
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Jung Wook Kim
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
| | - Jeong Sook Ha
- Department of Chemical and Biological Engineering, Korea University , 5-1 Anam-dong, Seoul 13l-701, Korea
- KU-KIST Graduate School of Converging Science and Technology , 5-1 Anam-dong, Seoul 13l-701, Korea
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9
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Chen YC, Yang H. Octopus-Inspired Assembly of Nanosucker Arrays for Dry/Wet Adhesion. ACS NANO 2017; 11:5332-5338. [PMID: 28448714 DOI: 10.1021/acsnano.7b00809] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The octopus is capable of adhering to slippery, rough, and irregular surfaces in the marine intertidal zone because of its periodic infundibulum-shaped suckers on the arms. Here, we present a scalable self-assembly technology for fabricating adhesion materials that mimic octopus sucker functionality. By utilizing spin-coated two-dimensional colloidal crystals as templates, non-close-packed nanosucker arrays are patterned on silicone substrates. The resulting nanosuckers can be deformed to exhibit great adhesive capacities on both microrough and flat surfaces in dry and wet environments. This indicates a probable biomimetic solution to the challenge of wound care.
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Affiliation(s)
- Ying-Chu Chen
- Department of Chemical Engineering, National Chung Hsing University , No. 145, Xingda Road, Taichung 40227, Taiwan
| | - Hongta Yang
- Department of Chemical Engineering, National Chung Hsing University , No. 145, Xingda Road, Taichung 40227, Taiwan
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10
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Lee H, Um DS, Lee Y, Lim S, Kim HJ, Ko H. Octopus-Inspired Smart Adhesive Pads for Transfer Printing of Semiconducting Nanomembranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:7457-7465. [PMID: 27322886 DOI: 10.1002/adma.201601407] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 05/15/2016] [Indexed: 06/06/2023]
Abstract
By mimicking muscle actuation to control cavity-pressure-induced adhesion of octopus suckers, smart adhesive pads are developed in which the thermoresponsive actuation of a hydrogel layer on elastomeric microcavity pads enables excellent switchable adhesion in response to a thermal stimulus (maximum adhesive strength: 94 kPa, adhesion switching ratio: ≈293 for temperature change between 22 and 61 °C).
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Affiliation(s)
- Hochan Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan Metropolitan City, 689-798, Republic of Korea
| | - Doo-Seung Um
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan Metropolitan City, 689-798, Republic of Korea
| | - Youngsu Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan Metropolitan City, 689-798, Republic of Korea
| | - Seongdong Lim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan Metropolitan City, 689-798, Republic of Korea
| | - Hyung-Jun Kim
- Center for Spintronics, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea
| | - Hyunhyub Ko
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan Metropolitan City, 689-798, Republic of Korea.
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11
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Ordered Monolayer Gold Nano-urchin Structures and Their Size Induced Control for High Gas Sensing Performance. Sci Rep 2016; 6:24625. [PMID: 27090570 PMCID: PMC4835752 DOI: 10.1038/srep24625] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/31/2016] [Indexed: 11/09/2022] Open
Abstract
The synthesis of ordered monolayers of gold nano-urchin (Au-NU) nanostructures with controlled size, directly on thin films using a simple electrochemical method is reported in this study. In order to demonstrate one of the vast potential applications, the developed Au-NUs were formed on the electrodes of transducers (QCM) to selectively detect low concentrations of elemental mercury (Hg(0)) vapor. It was found that the sensitivity and selectivity of the sensor device is enhanced by increasing the size of the nanospikes on the Au-NUs. The Au-NU-12 min QCM (Au-NUs with nanospikes grown on it for a period of 12 min) had the best performance in terms of transducer based Hg(0) vapor detection. The sensor had 98% accuracy, 92% recovery, 96% precision (repeatability) and significantly, showed the highest sensitivity reported to date, resulting in a limit of detection (LoD) of only 32 μg/m3 at 75 °C. When compared to the control counterpart, the accuracy and sensitivity of the Au-NU-12 min was enhanced by ~2 and ~5 times, respectively. The results demonstrate the excellent activity of the developed materials which can be applied to a range of applications due to their long range order, tunable size and ability to form directly on thin-films.
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12
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Wang W, You S, Gong X, Qi D, Chandran BK, Bi L, Cui F, Chen X. Bioinspired Nanosucker Array for Enhancing Bioelectricity Generation in Microbial Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:270-275. [PMID: 26550771 DOI: 10.1002/adma.201503609] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 09/13/2015] [Indexed: 06/05/2023]
Abstract
A bioinspired active anode with a suction effect is demonstrated for microbial fuel cells by constructing polypyrrole (PPy) nanotubular arrays on carbon textiles. The oxygen in the inner space of the nanosucker can be depleted by micro-organisms with the capability of facul-tative respiration, forming a vacuum, which then activates the electrode to draw the microorganism by suction and thus improve the bioelectricity generation.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, P. R. China
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, P. R. China
| | - Xiaobo Gong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, P. R. China
| | - Dianpeng Qi
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Bevita K Chandran
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Lanpo Bi
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, P. R. China
| | - Fuyi Cui
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, P. R. China
| | - Xiaodong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
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13
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Choi MK, Park OK, Choi C, Qiao S, Ghaffari R, Kim J, Lee DJ, Kim M, Hyun W, Kim SJ, Hwang HJ, Kwon SH, Hyeon T, Lu N, Kim DH. Cephalopod-Inspired Miniaturized Suction Cups for Smart Medical Skin. Adv Healthc Mater 2016; 5:80-7. [PMID: 25989744 DOI: 10.1002/adhm.201500285] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 04/29/2015] [Indexed: 01/21/2023]
Affiliation(s)
- Moon Kee Choi
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Ok Kyu Park
- Division of Bio-imaging, Korea Basic Science Institute, Chun-Cheon, 200-701, Republic of Korea
| | - Changsoon Choi
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Shutao Qiao
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, Texas Materials Institute, University of Texas at Austin, 210 E 24th St, Austin, TX, 78712, USA
| | | | - Jaemin Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Dong Jun Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Myungbin Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Wonji Hyun
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Seok Joo Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Hye Jin Hwang
- Division of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Seung-Hae Kwon
- Division of Bio-imaging, Korea Basic Science Institute, Chun-Cheon, 200-701, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
| | - Nanshu Lu
- Center for Mechanics of Solids, Structures and Materials, Department of Aerospace Engineering and Engineering Mechanics, Texas Materials Institute, University of Texas at Austin, 210 E 24th St, Austin, TX, 78712, USA
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 151-742, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 151-742, Republic of Korea
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14
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Tramacere F, Follador M, Pugno NM, Mazzolai B. Octopus-like suction cups: from natural to artificial solutions. BIOINSPIRATION & BIOMIMETICS 2015; 10:035004. [PMID: 25970079 DOI: 10.1088/1748-3190/10/3/035004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Octopus suckers are able to attach to all nonporous surfaces and generate a very strong attachment force. The well-known attachment features of this animal result from the softness of the sucker tissues and the surface morphology of the portion of the sucker that is in contact with objects or substrates. Unlike artificial suction cups, octopus suckers are characterized by a series of radial grooves that increase the area subjected to pressure reduction during attachment. In this study, we constructed artificial suction cups with different surface geometries and tested their attachment performances using a pull-off setup. First, smooth suction cups were obtained for casting; then, sucker surfaces were engraved with a laser cutter. As expected, for all the tested cases, the engraving treatment enhanced the attachment performance of the elastomeric suction cups compared with that of the smooth versions. Moreover, the results indicated that the surface geometry with the best attachment performance was the geometry most similar to octopus sucker morphology. The results obtained in this work can be utilized to design artificial suction cups with higher wet attachment performance.
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Affiliation(s)
- F Tramacere
- Center for Micro-BioRobotics, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
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