1
|
Parmar D, Rosado-Rosa JM, Shrout JD, Sweedler JV. Metabolic insights from mass spectrometry imaging of biofilms: A perspective from model microorganisms. Methods 2024; 224:21-34. [PMID: 38295894 PMCID: PMC11149699 DOI: 10.1016/j.ymeth.2024.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/17/2023] [Accepted: 01/16/2024] [Indexed: 02/05/2024] Open
Abstract
Biofilms are dense aggregates of bacterial colonies embedded inside a self-produced polymeric matrix. Biofilms have received increasing attention in medical, industrial, and environmental settings due to their enhanced survival. Their characterization using microscopy techniques has revealed the presence of structural and cellular heterogeneity in many bacterial systems. However, these techniques provide limited chemical detail and lack information about the molecules important for bacterial communication and virulence. Mass spectrometry imaging (MSI) bridges the gap by generating spatial chemical information with unmatched chemical detail, making it an irreplaceable analytical platform in the multi-modal imaging of biofilms. In the last two decades, over 30 species of biofilm-forming bacteria have been studied using MSI in different environments. The literature conveys both analytical advancements and an improved understanding of the effects of environmental variables such as host surface characteristics, antibiotics, and other species of microorganisms on biofilms. This review summarizes the insights from frequently studied model microorganisms. We share a detailed list of organism-wide metabolites, commonly observed mass spectral adducts, culture conditions, strains of bacteria, substrate, broad problem definition, and details of the MS instrumentation, such as ionization sources and matrix, to facilitate future studies. We also compared the spatial characteristics of the secretome under different study designs to highlight changes because of various environmental influences. In addition, we highlight the current limitations of MSI in relation to biofilm characterization to enable cross-comparison between experiments. Overall, MSI has emerged to become an important approach for the spatial/chemical characterization of bacterial biofilms and its use will continue to grow as MSI becomes more accessible.
Collapse
Affiliation(s)
- Dharmeshkumar Parmar
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Joenisse M Rosado-Rosa
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Joshua D Shrout
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, United States; Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, United States
| | - Jonathan V Sweedler
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
| |
Collapse
|
2
|
Andrei V, Roh I, Yang P. Nanowire photochemical diodes for artificial photosynthesis. SCIENCE ADVANCES 2023; 9:eade9044. [PMID: 36763656 PMCID: PMC9917021 DOI: 10.1126/sciadv.ade9044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/05/2023] [Indexed: 06/18/2023]
Abstract
Artificial photosynthesis can provide a solution to our current energy needs by converting small molecules such as water or carbon dioxide into useful fuels. This can be accomplished using photochemical diodes, which interface two complementary light absorbers with suitable electrocatalysts. Nanowire semiconductors provide unique advantages in terms of light absorption and catalytic activity, yet great control is required to integrate them for overall fuel production. In this review, we journey across the progress in nanowire photoelectrochemistry (PEC) over the past two decades, revealing design principles to build these nanowire photochemical diodes. To this end, we discuss the latest progress in terms of nanowire photoelectrodes, focusing on the interplay between performance, photovoltage, electronic band structure, and catalysis. Emphasis is placed on the overall system integration and semiconductor-catalyst interface, which applies to inorganic, organic, or biologic catalysts. Last, we highlight further directions that may improve the scope of nanowire PEC systems.
Collapse
Affiliation(s)
- Virgil Andrei
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Inwhan Roh
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Liquid Sunlight Alliance, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Liquid Sunlight Alliance, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Kavli Energy NanoScience Institute, Berkeley, CA 94720, USA
| |
Collapse
|
3
|
Recent progress in the mechanisms, preparations and applications of polymeric antifogging coatings. Adv Colloid Interface Sci 2022; 309:102794. [DOI: 10.1016/j.cis.2022.102794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/19/2022] [Accepted: 09/29/2022] [Indexed: 11/21/2022]
|
4
|
Lee SH, Kang M, Jang H, Kondaveeti S, Sun K, Kim S, Park HH, Jeong HE. Bifunctional Amphiphilic Nanospikes with Antifogging and Antibiofouling Properties. ACS APPLIED MATERIALS & INTERFACES 2022; 14:39478-39488. [PMID: 35959590 DOI: 10.1021/acsami.2c08266] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Over the past few decades, extensive research efforts have been devoted to developing surfaces with unique functionalities, such as controlled wettability, antibiofouling, antifogging, and anti-icing behavior, for applications in a wide range of fields, including biomedical devices, optical instruments, microfluidics, and energy conservation and harvesting. However, many of the previously reported approaches have limitations with regard to eco-friendliness, multifunctionality, long-term stability and efficacy, and cost effectiveness. Herein, we propose a scalable bifunctional surface that simultaneously exhibits excellent antifogging and antibiofouling properties based on the synergistic integration of an eco-friendly and bio-friendly polyethylene glycol (PEG) hydrogel, oleamide (OA), and nanoscale architectures in a single flexible platform. We demonstrate that the PEG-OA-nanostructure hybrid exhibits excellent antifogging performance owing to its enhanced water absorption and spreading properties. We further show that the triple hybrid exhibits notable biofilm resistance without the use of toxic biocides or chemicals by integrating the "fouling-resistant" mechanism of the PEG hydrogel, the "fouling-release" mechanism of OA, and the "foulant-killing" mechanism of the nanostructures.
Collapse
Affiliation(s)
- 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
| | - Hyejin Jang
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Stalin Kondaveeti
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Kahyun Sun
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Somi Kim
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyun-Ha Park
- Department of Mechanical Engineering, Wonkwang University, Jeonbuk 54538, Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| |
Collapse
|
5
|
Lin N, Valiei A, McKay G, Nguyen D, Tufenkji N, Moraes C. Microfluidic Study of Bacterial Attachment on and Detachment from Zinc Oxide Nanopillars. ACS Biomater Sci Eng 2022; 8:3122-3131. [PMID: 35678761 DOI: 10.1021/acsbiomaterials.2c00233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nanopillars can influence how bacterial cells attach to a surface. Herein, we investigated whether self-assembled zinc oxide (ZnO) nanopillars synthesized on glass substrates via the conventional hydrothermal route possess anti-biofouling properties either by reducing the amount of initially attached cells or promoting the detachment of cells from the surface or both. To avoid complications associated with manual intervention methods of assessing bacterial attachment on nanopillar surfaces, we implemented a microfluidic approach. In our study, we synthesized two nanopillar topographies: a low surface density of ZnO nanopillars and a high surface density of ZnO nanopillars. Next, we mounted microfluidic channels to each of these substrates. This microfluidic approach allowed us to gently flow Pseudomonas aeruginosa, Staphylococcus aureus, or Bacillus subtilis cells onto the nanopillars for initial attachment before systematically increasing the flowrate to attempt to detach remaining attached cells without introducing air-liquid interface artefacts during the assay. Generally, initial bacterial attachment was similar across all substrates. However, cells consistently detached more readily from high-surface-density nanopillars compared to low-surface-density nanopillars. Electron microscopy revealed that cells that attached to high-surface-density nanopillars rested atop the nanopillars, fully exposed to microfluidic shear, whereas many cells became trapped in the void space between neighboring low-surface-density nanopillars, shielding these cells from detachment. Our findings indicate that self-assembled ZnO nanopillars can provide anti-biofouling properties under submerged flow but only if synthesized at high surface density.
Collapse
Affiliation(s)
- Nicholas Lin
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec, Canada H3A 0C5
| | - Amin Valiei
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec, Canada H3A 0C5
| | - Geoffrey McKay
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, 1001 Décarie Boulevard, Montréal, Québec, Canada H4A 3J1
| | - Dao Nguyen
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, 1001 Décarie Boulevard, Montréal, Québec, Canada H4A 3J1.,Department of Microbiology and Immunology, McGill University, 3775 University Street, Montréal, Québec, Canada H3A 2B4.,Department of Medicine, McGill University, 1001 Décarie Boulevard, Montréal, Québec, Canada H4A 3J1
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec, Canada H3A 0C5
| | - Christopher Moraes
- Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, Québec, Canada H3A 0C5.,Department of Biomedical Engineering, McGill University, 3775 University Street, Montréal, Québec, Canada H3A 2B4.,Rosalind and Morris Goodman Cancer Research Center, McGill University, 1160 Pine Avenue West, Montréal, Québec, Canada H3A 1A3.,Division of Experimental Medicine, McGill University, 1001 Décarie Boulevard, Montréal, Québec, Canada H4A 3J1
| |
Collapse
|
6
|
Yau MCM, Hayes M, Kalathil S. Biocatalytic conversion of sunlight and carbon dioxide to solar fuels and chemicals. RSC Adv 2022; 12:16396-16411. [PMID: 35754911 PMCID: PMC9169074 DOI: 10.1039/d2ra00673a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/25/2022] [Indexed: 11/21/2022] Open
Abstract
This review discusses the progress in the assembly of photosynthetic biohybrid systems using enzymes and microbes as the biocatalysts which are capable of utilising light to reduce carbon dioxide to solar fuels. We begin by outlining natural photosynthesis, an inspired biomachinery to develop artificial photosystems, and the rationale and motivation to advance and introduce biological substrates to create more novel, and efficient, photosystems. The case studies of various approaches to the development of CO2-reducing microbial semi-artificial photosystems are also summarised, showcasing a variety of methods for hybrid microbial photosystems and their potential. Finally, approaches to investigate the relatively ambiguous electron transfer mechanisms in such photosystems are discussed through the presentation of spectroscopic techniques, eventually leading to what this will mean for the future of microbial hybrid photosystems.
Collapse
Affiliation(s)
- Mandy Ching Man Yau
- Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Faculty of Health and Life Sciences, Northumbria University Newcastle NE1 8ST UK
| | - Martin Hayes
- Johnson Matthey Technology Centre Cambridge Science Park, Milton Road Cambridge CB4 0FP UK
| | - Shafeer Kalathil
- Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Faculty of Health and Life Sciences, Northumbria University Newcastle NE1 8ST UK
| |
Collapse
|
7
|
Nanowired electrodes as outer membrane cytochrome-independent electronic conduit in Shewanella oneidensis. iScience 2022; 25:103853. [PMID: 35198904 PMCID: PMC8851274 DOI: 10.1016/j.isci.2022.103853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 12/18/2021] [Accepted: 01/25/2022] [Indexed: 11/20/2022] Open
Abstract
Extracellular electron transfer (EET) from microorganisms to inorganic electrodes is a unique ability of electrochemically active bacteria. Despite rigorous genetic and biochemical screening of the c-type cytochromes that make up the EET network, the individual electron transfer steps over the cell membrane remain mostly unresolved. As such, attempts to transplant entire EET chains from native into non-native exoelectrogens have resulted in inferior electron transfer rates. In this study we investigate how nanostructured electrodes can interface with Shewanella oneidensis to establish an alternative EET pathway. Improved biocompatibility was observed for densely packed nanostructured surfaces with a low cell-nanowire load distribution during applied external forces. External gravitational forces were needed to establish a bioelectrochemical cell-nanorod interface. Bioelectrochemical analysis showed evidence of nanorod penetration beyond the outer cell membrane of a deletion mutant lacking all outer membrane cytochrome encoding genes that was only electroactive on a nanostructured surface and under external force.
Collapse
|
8
|
Halder P, Hossain N, Pramanik BK, Bhuiyan MA. Engineered topographies and hydrodynamics in relation to biofouling control-a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:40678-40692. [PMID: 32974820 DOI: 10.1007/s11356-020-10864-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
Biofouling, the unwanted growth of microorganisms on submerged surfaces, has appeared as a significant impediment for underwater structures, water vessels, and medical devices. For fixing the biofouling issue, modification of the submerged surface is being experimented as a non-toxic approach worldwide. This technique necessitated altering the surface topography and roughness and developing a surface with a nano- to micro-structured pattern. The main objective of this study is to review the recent advancements in surface modification and hydrodynamic analysis concerning biofouling control. This study described the occurrence of the biofouling process, techniques suitable for biofouling control, and current state of research advancements comprehensively. Different biofilms under various hydrodynamic conditions have also been outlined in this study. Scenarios of biomimetic surfaces and underwater super-hydrophobicity, locomotion of microorganisms, nano- and micro-hydrodynamics on various surfaces around microorganisms, and material stiffness were explained thoroughly. The review also documented the approaches to inhibit the initial settlement of microorganisms and prolong the subsequent biofilm formation process for patterned surfaces. Though it is well documented that biofouling can be controlled to various degrees with different nano- and micro-structured patterned surfaces, the understanding of the underlying mechanism is still imprecise. Therefore, this review strived to present the possibilities of implementing the patterned surfaces as a physical deterrent against the settlement of fouling organisms and developing an active microfluidic environment to inhibit the initial bacterial settlement process. In general, microtopography equivalent to that of bacterial cells influences attachment via hydrodynamics, topography-induced cell placement, and air-entrapment, whereas nanotopography influences physicochemical forces through macromolecular conditioning.
Collapse
Affiliation(s)
- Partha Halder
- School of Engineering, RMIT University, Melbourne, VIC, 3001, Australia
| | - Nazia Hossain
- School of Engineering, RMIT University, Melbourne, VIC, 3001, Australia
| | | | - Muhammed A Bhuiyan
- School of Engineering, RMIT University, Melbourne, VIC, 3001, Australia.
| |
Collapse
|
9
|
Khalid S, Gao A, Wang G, Chu PK, Wang H. Tuning surface topographies on biomaterials to control bacterial infection. Biomater Sci 2021; 8:6840-6857. [PMID: 32812537 DOI: 10.1039/d0bm00845a] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Microbial contamination and subsequent formation of biofilms frequently cause failure of surgical implants and a good understanding of the bacteria-surface interactions is vital to the design and safety of biomaterials. In this review, the physical and chemical factors that are involved in the various stages of implant-associated bacterial infection are described. In particular, topographical modification strategies that have been employed to mitigate bacterial adhesion via topographical mechanisms are summarized and discussed comprehensively. Recent advances have improved our understanding about bacteria-surface interactions and have enabled biomedical engineers and researchers to develop better and more effective antibacterial surfaces. The related interdisciplinary efforts are expected to continue in the quest for next-generation medical devices to attain the ultimate goal of improved clinical outcomes and reduced number of revision surgeries.
Collapse
Affiliation(s)
- Saud Khalid
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | | | | | | | | |
Collapse
|
10
|
Jia J, Ellis JF, Cao T, Fu K, Morales-Soto N, Shrout JD, Sweedler JV, Bohn PW. Biopolymer Patterning-Directed Secretion in Mucoid and Nonmucoid Strains of Pseudomonas aeruginosa Revealed by Multimodal Chemical Imaging. ACS Infect Dis 2021; 7:598-607. [PMID: 33620198 DOI: 10.1021/acsinfecdis.0c00765] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Quinolone, pyocyanin, and rhamnolipid production were studied in Pseudomonas aeruginosa by spatially patterning mucin, a glycoprotein important to infection of lung epithelia. Mass spectrometric imaging and confocal Raman microscopy are combined to probe P. aeruginosa biofilms from mucoid and nonmucoid strains grown on lithographically defined patterns. Quinolone signatures from biofilms on patterned vs unpatterned and mucin vs mercaptoundecanoic acid (MUA) surfaces were compared. Microbial attachment is accompanied by secretion of 2-alkyl-4-quinolones as well as rhamnolipids from the mucoid and nonmucoid strains. Pyocyanin was also detected both in the biofilm and in the supernatant in the mucoid strain only. Significant differences in the spatiotemporal distributions of secreted factors are observed between strains and among different surface patterning conditions. The mucoid strain is sensitive to composition and patterning while the nonmucoid strain is not, and in promoting community development in the mucoid strain, nonpatterned surfaces are better than patterned, and mucin is better than MUA. Also, the mucoid strain secretes the virulence factor pyocyanin in a way that correlates with distress. A change in the relative abundance for two rhamnolipids is observed in the mucoid strain during exposure to mucin, whereas minimal variation is observed in the nonmucoid strain. Differences between mucoid and nonmucoid strains are consistent with their strain-specific phenology, in which the mucoid strain develops highly protected and withdrawn biofilms that achieve Pseudomonas quinolone signal production under limited conditions.
Collapse
Affiliation(s)
- Jin Jia
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Joanna F. Ellis
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801,United States
| | - Tianyuan Cao
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Kaiyu Fu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Nydia Morales-Soto
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556,United States
| | - Joshua D. Shrout
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556,United States
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jonathan V. Sweedler
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801,United States
| | - Paul W. Bohn
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| |
Collapse
|
11
|
Li Y, Wang T, Wu J. Capture and detection of urine bacteria using a microchannel silicon nanowire microfluidic chip coupled with MALDI-TOF MS. Analyst 2021; 146:1151-1156. [PMID: 33533763 DOI: 10.1039/d0an02222e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Fast bacterial identification in urine samples was achieved by capturing bacteria on a microchannel silicon nanowire microfluidic chip, followed by MALDI-TOF MS detection. Under the optimized conditions, bacteria with a concentration of 106 CFU mL-1 in urine samples could be identified without culture. If cultured for 4 hours, bacteria with a concentration as low as 103 CFU mL-1 were identified.
Collapse
Affiliation(s)
- Yuexin Li
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China.
| | - Tao Wang
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China.
| | - Jianmin Wu
- Department of Chemistry, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
12
|
Wang R, Li H, Sun J, Zhang L, Jiao J, Wang Q, Liu S. Nanomaterials Facilitating Microbial Extracellular Electron Transfer at Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004051. [PMID: 33325567 DOI: 10.1002/adma.202004051] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/03/2020] [Indexed: 06/12/2023]
Abstract
Electrochemically active bacteria can transport their metabolically generated electrons to anodes, or accept electrons from cathodes to synthesize high-value chemicals and fuels, via a process known as extracellular electron transfer (EET). Harnessing of this microbial EET process has led to the development of microbial bio-electrochemical systems (BESs), which can achieve the interconversion of electrical and chemical energy and enable electricity generation, hydrogen production, electrosynthesis, wastewater treatment, desalination, water and soil remediation, and sensing. Here, the focus is on the current understanding of the microbial EET process occurring at both the bacteria-electrode interface and the biotic interface, as well as some attempts to improve the EET by using various nanomaterials. The behavior of nanomaterials in different EET routes and their influence on the performance of BESs are described. The inherent mechanisms will guide rational design of EET-related materials and lead to a better understanding of EET mechanisms.
Collapse
Affiliation(s)
- Ruiwen Wang
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Huidong Li
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jinzhi Sun
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Lu Zhang
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jia Jiao
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Qingqing Wang
- School of Chemistry and Chemical Engineering, Micro- and Nanotechnology Research Center, Harbin Institute of Technology, Harbin, 150090, China
| | - Shaoqin Liu
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| |
Collapse
|
13
|
Lee T, Lim J, Park K, Lim EK, Lee JJ. Peptidoglycan-Binding Protein Metamaterials Mediated Enhanced and Selective Capturing of Gram-Positive Bacteria and Their Specific, Ultra-Sensitive, and Reproducible Detection via Surface-Enhanced Raman Scattering. ACS Sens 2020; 5:3099-3108. [PMID: 32786378 DOI: 10.1021/acssensors.0c01139] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biological metamaterials with a specific size and spacing are necessary for developing highly sensitive and selective sensing systems to detect hazardous bacteria in complex solutions. Herein, the construction of peptidoglycan-binding protein (PGBP)-based metamaterials to selectively capture Gram-positive cells with high efficacy is reported. Nanoimprint lithography was used to generate a nanohole pattern as a template, the inside of which was modified with nickel(II)-nitrilotriacetic acid (Ni-NTA). Then, PGBP metamaterials were fabricated by immobilizing PGBP via chelation between Ni-NTA and six histidines on PGBP. Compared to the flat and spread PGBP-covered bare substrates, the PGBP-based metamaterials enabled selective capturing of Gram-positive bacteria with high efficacy, owing to enhanced interactions between the metamaterials and bacterial surface not shown in bulk materials. Thereafter, the specific strain and quantitative information of the captured bacteria was obtained by surface-enhanced Raman scattering mapping analysis in the 1 to 1 × 106 cfu/mL range within 30 min. It should be noted that no additional signal amplification process was required for lowly abundant bacteria, even at the single-bacterium level. The PGBP-based metamaterials could be regenerated multiple times with preserved sensing efficiency. Finally, this assay can detect specific Gram-positive bacteria, such as Staphylococcus aureus, in human plasma.
Collapse
Affiliation(s)
- Taeksu Lee
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Republic of Korea
| | - Jaewoo Lim
- Bionano Technology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, South Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Kyoungsook Park
- BioNano Health Guard Research Center, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, South Korea
- Department of General Education, Daejeon Health Institute of Technology, 21 Chungjeong-ro, Dong-gu, Daejeon 34504, Korea
| | - Eun-Kyung Lim
- Bionano Technology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, South Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Jae-Jong Lee
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Republic of Korea
| |
Collapse
|
14
|
Cao Y, Jana S, Bowen L, Liu H, Jakubovics NS, Chen J. Bacterial nanotubes mediate bacterial growth on periodic nano-pillars. SOFT MATTER 2020; 16:7613-7623. [PMID: 32728681 DOI: 10.1039/d0sm00602e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface topography designed to achieve spatial segregation has shown promise in delaying bacterial attachment and biofilm growth. However, the underlying mechanisms linking surface topography to the inhibition of microbial attachment and growth still remain unclear. Here, we investigated bacterial attachment, cell alignment and biofilm formation of Pseudomonas aeruginosa on periodic nano-pillar surfaces with different pillar spacing. Using fluorescence and scanning electron microscopy, bacteria were shown to align between the nanopillars. Threadlike structures ("bacterial nanotubes") protruded from the majority of bacterial cells and appeared to link cells directly with the nanopillars. Using ΔfliM and ΔpilA mutants lacking flagella or pili, respectively, we further demonstrated that cell alignment behavior within nano-pillars is independent of the flagella or pili. The presence of bacteria nanotubes was found in all cases, and is not linked to the expression of flagella or pili. We propose that bacterial nanotubes are produced to aid in cell-surface or cell-cell connections. Nano-pillars with smaller spacing appeared to enhance the extension and elongation of bacterial nanotube networks. Therefore, nano-pillars with narrow spacing can be easily overcome by nanotubes that connect isolated bacterial aggregates. Such nanotube networks may aid cell-cell communication, thereby promoting biofilm development.
Collapse
Affiliation(s)
- Yunyi Cao
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK.
| | - Saikat Jana
- School of Biomedical Sciences, University of Leeds, LS2 9JT, UK
| | - Leon Bowen
- Department of Physics, Durham University, Durham, DH1 3LE, UK
| | - Hongzhong Liu
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710054, China
| | | | - Jinju Chen
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK.
| |
Collapse
|
15
|
Advances in Laser Ablation Synthesized Silicon-Based Nanomaterials for the Prevention of Bacterial Infection. NANOMATERIALS 2020; 10:nano10081443. [PMID: 32722023 PMCID: PMC7466518 DOI: 10.3390/nano10081443] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 07/18/2020] [Accepted: 07/22/2020] [Indexed: 12/30/2022]
Abstract
Nanomaterials have unique properties and characteristics derived from their shape and small size that are not present in bulk materials. If size and shape are decisive, the synthesis method used, which determines the above parameters, is equally important. Among the different nanomaterial’s synthesis methods, we can find chemical methods (microemulsion, sol-gel, hydrothermal treatments, etc.), physical methods (evaporation-condensation, laser treatment, etc.) and biosynthesis. Among all of them, the use of laser ablation that allows obtaining non-toxic nanomaterials (absence of foreign compounds) with a controlled 3D size, has emerged in recent years as a simple and versatile alternative for the synthesis of a wide variety of nanomaterials with numerous applications. This manuscript reviews the latest advances in the use of laser ablation for the synthesis of silicon-based nanomaterials, highlighting its usefulness in the prevention of bacterial infection.
Collapse
|
16
|
Seo E, Seong MR, Lee JW, Lim H, Park J, Kim H, Hwang H, Lee D, Kim J, Kim GH, Hwang DS, Lee SJ. Anti-Biofouling Features of Eco-Friendly Oleamide-PDMS Copolymers. ACS OMEGA 2020; 5:11515-11521. [PMID: 32478240 PMCID: PMC7254802 DOI: 10.1021/acsomega.0c00633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
The biofouling of marine organisms on a surface induces serious economic damage. One of the conventional anti-biofouling strategies is the use of toxic chemicals. In this study, a new eco-friendly oleamide-PDMS copolymer (OPC) is proposed for sustainable anti-biofouling and effective drag reduction. The anti-biofouling characteristics of the OPC are investigated using algal spores and mussels. The proposed OPC is found to inhibit the adhesion of algal spores and mussels. The slippery features of the fabricated OPC surfaces are examined by direct measurement of pressure drops in channel flows. The proposed OPC surface would be utilized in various industrial applications including marine vehicles and biomedical devices.
Collapse
Affiliation(s)
- Eunseok Seo
- Department
of Mechanical Engineering, Pohang University
of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Myeong Ryun Seong
- Department
of Mechanical Engineering, Pohang University
of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Ji Woong Lee
- Department
of Biological Sciences, Kongju National
University, Gongju 314-701, South Korea
| | - Heejin Lim
- Department
of New Biology, DGIST (Daegu Gyeongbuk Institute
of Science and Technology), Daegu 711-873, South Korea
| | - Jiwon Park
- Department
of Microbiology, Chungbuk National University, Cheongju 28644, South Korea
| | - Hyungbin Kim
- Division
of Integrative Biosciences and Biotechnology (IBB), Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Hyundo Hwang
- Department
of Mechanical Engineering, Pohang University
of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Dohoon Lee
- Division
of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Jiho Kim
- Pohang
Accelerator Laboratory, Pohang 37673, South Korea
| | - Gwang Hoon Kim
- Department
of Biological Sciences, Kongju National
University, Gongju 314-701, South Korea
| | - Dong Soo Hwang
- Division
of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Sang Joon Lee
- Department
of Mechanical Engineering, Pohang University
of Science and Technology (POSTECH), Pohang 37673, South Korea
| |
Collapse
|
17
|
Molina J, Ramos D, Gil-Santos E, Escobar JE, Ruz JJ, Tamayo J, San Paulo Á, Calleja M. Optical Transduction for Vertical Nanowire Resonators. NANO LETTERS 2020; 20:2359-2369. [PMID: 32191041 PMCID: PMC7146857 DOI: 10.1021/acs.nanolett.9b04909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/05/2020] [Indexed: 05/26/2023]
Abstract
We describe an optical transduction mechanism to measure the flexural mode vibrations of vertically aligned nanowires on a flat substrate with high sensitivity, linearity, and ease of implementation. We demonstrate that the light reflected from the substrate when a laser beam strikes it parallel to the nanowires is modulated proportionally to their vibration, so that measuring such modulation provides a highly efficient resonance readout. This mechanism is applicable to single nanowires or arrays without specific requirements regarding their geometry or array pattern, and no fabrication process besides the nanowire generation is required. We show how to optimize the performance of this mechanism by characterizing the split flexural modes of vertical silicon nanowires in their full dynamic range and up to the fifth mode order. The presented transduction approach is relevant for any application of nanowire resonators, particularly for integrating nanomechanical sensing in functional substrates based on vertical nanowires for biological applications.
Collapse
Affiliation(s)
- Juan Molina
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - Daniel Ramos
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - Eduardo Gil-Santos
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - Javier E. Escobar
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - José J. Ruz
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - Javier Tamayo
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - Álvaro San Paulo
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| | - Montserrat Calleja
- Instituto de Micro y Nanotecnología
(IMN-CNM, CSIC), Isaac Newton 8, Tres Cantos, 28760 Madrid, Spain
| |
Collapse
|
18
|
Higgins SG, Becce M, Belessiotis-Richards A, Seong H, Sero JE, Stevens MM. High-Aspect-Ratio Nanostructured Surfaces as Biological Metamaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1903862. [PMID: 31944430 PMCID: PMC7610849 DOI: 10.1002/adma.201903862] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/02/2019] [Indexed: 04/14/2023]
Abstract
Materials patterned with high-aspect-ratio nanostructures have features on similar length scales to cellular components. These surfaces are an extreme topography on the cellular level and have become useful tools for perturbing and sensing the cellular environment. Motivation comes from the ability of high-aspect-ratio nanostructures to deliver cargoes into cells and tissues, access the intracellular environment, and control cell behavior. These structures directly perturb cells' ability to sense and respond to external forces, influencing cell fate, and enabling new mechanistic studies. Through careful design of their nanoscale structure, these systems act as biological metamaterials, eliciting unusual biological responses. While predominantly used to interface eukaryotic cells, there is growing interest in nonanimal and prokaryotic cell interfacing. Both experimental and theoretical studies have attempted to develop a mechanistic understanding for the observed behaviors, predominantly focusing on the cell-nanostructure interface. This review considers how high-aspect-ratio nanostructured surfaces are used to both stimulate and sense biological systems.
Collapse
Affiliation(s)
- Stuart G. Higgins
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | | | | | - Hyejeong Seong
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Julia E. Sero
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Molly M. Stevens
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
| |
Collapse
|
19
|
Sandu G, Avila Osses J, Luciano M, Caina D, Stopin A, Bonifazi D, Gohy JF, Silhanek A, Florea I, Bahri M, Ersen O, Leclère P, Gabriele S, Vlad A, Melinte S. Kinked Silicon Nanowires: Superstructures by Metal-Assisted Chemical Etching. NANO LETTERS 2019; 19:7681-7690. [PMID: 31593477 DOI: 10.1021/acs.nanolett.9b02568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report on metal-assisted chemical etching of Si for the synthesis of mechanically stable, hybrid crystallographic orientation Si superstructures with high aspect ratio, above 200. This method sustains high etching rates and facilitates reproducible results. The protocol enables the control of the number, angle, and location of the kinks via successive etch-quench sequences. We analyzed relevant Au mask catalyst features to systematically assess their impact on a wide spectrum of etched morphologies that can be easily attained and customized by fine-tuning of the critical etching parameters. For instance, the designed kinked Si nanowires can be incorporated in biological cells without affecting their viability. An accessible numerical model is provided to explain the etch profiles and the physicochemical events at the Si/Au-electrolyte interface and offers guidelines for the development of finite-element modeling of metal-assisted Si chemical etching.
Collapse
Affiliation(s)
- Georgiana Sandu
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics , Université catholique de Louvain , 1348 Louvain-la-Neuve , Belgium
| | - Jonathan Avila Osses
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics , Université catholique de Louvain , 1348 Louvain-la-Neuve , Belgium
| | - Marine Luciano
- Interface and Complex Fluids Laboratory , Université de Mons , 7000 Mons , Belgium
| | - Darwin Caina
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics , Université catholique de Louvain , 1348 Louvain-la-Neuve , Belgium
- Facultad de Ingeniería, Ciencias Físicas y Matemática , Universidad Central del Ecuador , 170521 Quito , Ecuador
| | - Antoine Stopin
- School of Chemistry , Cardiff University , Main Building, Park Place, Cardiff CF10 3AT , United Kingdom
| | - Davide Bonifazi
- School of Chemistry , Cardiff University , Main Building, Park Place, Cardiff CF10 3AT , United Kingdom
| | - Jean-François Gohy
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , 1348 Louvain-la-Neuve , Belgium
| | - Alejandro Silhanek
- Experimental Physics of Nanostructured Materials, Q-MAT, CESAM , Université de Liège , B-4000 Sart Tilman , Belgium
| | - Ileana Florea
- Laboratoire de Physique des Interfaces et des Couches Minces , Ecole Polytechnique , 91128 Palaiseau , France
| | - Mounib Bahri
- Institut de Physique et Chimie des Matériaux de Strasbourg , UMR 7504 CNRS - Université de Strasbourg , 67087 Strasbourg , France
| | - Ovidiu Ersen
- Institut de Physique et Chimie des Matériaux de Strasbourg , UMR 7504 CNRS - Université de Strasbourg , 67087 Strasbourg , France
| | - Philippe Leclère
- Laboratory for Chemistry of Novel Materials, Center for Innovation and Research in Materials and Polymers , Université de Mons , 7000 Mons , Belgium
| | - Sylvain Gabriele
- Interface and Complex Fluids Laboratory , Université de Mons , 7000 Mons , Belgium
| | - Alexandru Vlad
- Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , 1348 Louvain-la-Neuve , Belgium
| | - Sorin Melinte
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics , Université catholique de Louvain , 1348 Louvain-la-Neuve , Belgium
| |
Collapse
|
20
|
Ko H, Park HH, Byeon H, Kang M, Ryu J, Sung HJ, Lee SJ, Jeong HE. Undulatory topographical waves for flow-induced foulant sweeping. SCIENCE ADVANCES 2019; 5:eaax8935. [PMID: 31819902 PMCID: PMC6884415 DOI: 10.1126/sciadv.aax8935] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
Diverse bioinspired antifouling strategies have demonstrated effective fouling-resistant properties with good biocompatibility, sustainability, and long-term activity. However, previous studies on bioinspired antifouling materials have mainly focused on material aspects or static architectures of nature without serious consideration of kinetic topographies or dynamic motion. Here, we propose a magnetically responsive multilayered composite that can generate coordinated, undulatory topographical waves with controlled length and time scales as a new class of dynamic antifouling materials. The undulatory surface waves of the dynamic composite induce local and global vortices near the material surface and thereby sweep away foulants from the surface, fundamentally inhibiting their initial attachment. As a result, the dynamic composite material with undulating topographical waves provides an effective means for efficient suppression of biofilm formation without surface modification with chemical moieties or nanoscale architectures.
Collapse
Affiliation(s)
- Hangil Ko
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyun-Ha Park
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyeokjun Byeon
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Minsu Kang
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jaeha Ryu
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hyung Jin Sung
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sang Joon Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| |
Collapse
|
21
|
Park S, Park HH, Sun K, Gwon Y, Seong M, Kim S, Park TE, Hyun H, Choung YH, Kim J, Jeong HE. Hydrogel Nanospike Patch as a Flexible Anti-Pathogenic Scaffold for Regulating Stem Cell Behavior. ACS NANO 2019; 13:11181-11193. [PMID: 31518110 DOI: 10.1021/acsnano.9b04109] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Vertically aligned nanomaterials, such as nanowires and nanoneedles, hold strong potential as efficient platforms onto which living cells or tissues can be interfaced for use in advanced biomedical applications. However, their rigid mechanical properties and complex fabrication processes hinder their integration onto flexible, tissue-adaptable, and large-area patch-type scaffolds, limiting their practical applications. In this study, we present a highly flexible patch that possesses a spiky hydrogel nanostructure array as a transplantable platform for enhancing the growth and differentiation of stem cells and efficiently suppressing biofilm formation. In vitro studies show that the hydrogel nanospike patch imposes a strong physical stimulus to the membranes of stem cells and enhances their osteogenic, chondrogenic, and adipogenic differentiation and the secretion of crucial soluble factors without altering cell viability. At the same time, the array exhibits effective bactericidal properties against Gram-positive and Gram-negative bacteria. In vivo studies further demonstrate that the flexible hydrogel patch with its spiky vertical nanostructures significantly promotes the regeneration of damaged cranial bone tissues while suppressing pathogenic bacterial infections in mouse models.
Collapse
Affiliation(s)
- Sunho Park
- Department of Rural and Biosystems Engineering , Chonnam National University , Gwangju 61186 , Republic of Korea
| | - Hyun-Ha Park
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Kahyun Sun
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Yonghyun Gwon
- Department of Rural and Biosystems Engineering , Chonnam National University , Gwangju 61186 , Republic of Korea
| | - Minho Seong
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Sujin Kim
- Department of Rural and Biosystems Engineering , Chonnam National University , Gwangju 61186 , Republic of Korea
| | - Tae-Eun Park
- School of Life Science , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Hoon Hyun
- Department of Biomedical Sciences , Chonnam National University Medical School , Gwangju 61469 , Republic of Korea
| | - Yun-Hoon Choung
- Department of Otolaryngology , Ajou University School of Medicine , Suwon 16499 , Republic of Korea
| | - Jangho Kim
- Department of Rural and Biosystems Engineering , Chonnam National University , Gwangju 61186 , Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| |
Collapse
|
22
|
Zhao TT, Feng GH, Chen W, Song YF, Dong X, Li GH, Zhang HJ, Wei W. Artificial bioconversion of carbon dioxide. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63408-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
23
|
Li L, Tian F, Chang H, Zhang J, Wang C, Rao W, Hu H. Interactions of Bacteria With Monolithic Lateral Silicon Nanospikes Inside a Microfluidic Channel. Front Chem 2019; 7:483. [PMID: 31355180 PMCID: PMC6640657 DOI: 10.3389/fchem.2019.00483] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 06/24/2019] [Indexed: 01/31/2023] Open
Abstract
This paper presents a new strategy of integrating lateral silicon nanospikes using metal-assisted chemical etching (MacEtch) on the sidewall of micropillars for on-chip bacterial study. Silicon nanospikes have been reported to be able to kill bacteria without using chemicals and offer a new route to kill bacteria and can prevent the overuse of antibiotics to reduce bacteria. We demonstrated a new methodology to fabricate a chip with integrated silicon nanospikes onto the sidewalls of micropillars inside the microfluidic channel and attested its interactions with the representative gram-negative bacteria Escherichia coli. The results of colony-forming unit (CFU) calculation showed that 80% bacteria lost their viability after passing through the chip. Moreover, the results of adenosine triphosphate (ATP) measurement indicated that the chip with lateral silicon nanospikes could extract more than two times ATP contents compared with the chip without lateral silicon nanospikes, showing potential for using the chip with lateral silicon nanospikes as a bacterial lysing module.
Collapse
Affiliation(s)
- Lei Li
- CAS Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Feng Tian
- ZJU-UIUC Institute (ZJUI), Zhejiang University, Haining, China.,College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China
| | - Hao Chang
- CAS Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Jie Zhang
- Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO, United States
| | - Cheng Wang
- Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO, United States
| | - Wei Rao
- CAS Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Huan Hu
- ZJU-UIUC Institute (ZJUI), Zhejiang University, Haining, China.,College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China
| |
Collapse
|
24
|
Affiliation(s)
- Jiao Deng
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Yude Su
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Dong Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Chong Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| |
Collapse
|
25
|
Wang B, Jiang Z, Yu JC, Wang J, Wong PK. Enhanced CO 2 reduction and valuable C 2+ chemical production by a CdS-photosynthetic hybrid system. NANOSCALE 2019; 11:9296-9301. [PMID: 31049528 DOI: 10.1039/c9nr02896j] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Semi-artificial photosynthesis is an emerging technique in recent years. Here, we presented an inorganic-biological hybrid system composed of photosynthetic Rhodopseudomonas palustris and CdS nanoparticles coated on the bacterial surface. Under visible light irradiation, the CO2 reduction and valuable C2+ chemical production of R. palustris could be promoted by the photo-induced electrons from the CdS NPs. The increased energy-rich NADPH cofactor promoted the generation of the Calvin cycle intermediate, glyceraldehyde-3-phosphate. As a result, the production of solid biomass, carotenoids and poly-β-hydroxybutyrate (PHB) was increased to 148%, 122% and 147%, respectively. The photosynthetic efficiency (PE) of CdS-R. palustris was elevated from the original 4.31% to 5.98%. The surface loaded NP amount and the material-cell interface both played important roles in the efficient electron generation and transduction. The CdS-R. palustris hybrid system also exhibited a survival advantage over its natural counterparts under the autotrophic conditions. Under a practical solar/dark cycle, the produced biomass, carotenoid and PHB from the hybrid system also reach 139%, 117% and 135%, respectively. The CdS-photosynthetic hybrid system represents a powerful and expandable platform for advanced CO2 reduction and solar-to-chemical (S2C) conversion.
Collapse
Affiliation(s)
- Bo Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, P. R. China.
| | | | | | | | | |
Collapse
|
26
|
Liao W, Lin Q, Xu Y, Yang E, Duan Y. Preparation of Au@Ag core-shell nanoparticle decorated silicon nanowires for bacterial capture and sensing combined with laser induced breakdown spectroscopy and surface-enhanced Raman spectroscopy. NANOSCALE 2019; 11:5346-5354. [PMID: 30848272 DOI: 10.1039/c9nr00019d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Three-dimensional nano-biointerfaces, emerging as significant cell-guiding platforms, have attracted great attention. Nevertheless, complicated chemical modifications and instability of bio-ligands limit their widespread application. In this study, a novel biointerface, based on silicon nanowires (SiNWs) array, was prepared for bacterial capture and sensing. Vertically aligned SiNWs were fabricated via metal assisted chemical etching and decorated with uniform Au@Ag core-shell nanoparticles (Au@Ag NPs). These deposited Au@Ag NPs formed multi-scale topographic structures with nanowires, which provided effective attachment sites for bacterial adhesins. In addition, the Au cores of Au@Ag NPs enhanced the activity of the surface silver atoms and promoted the binding of Au@Ag NPs to bacteria. Thus, the Au@Ag NPs decorated SiNWs (SiNWs-Au@Ag) substrate exhibited high capture capacity for bacteria in drinking water (8.6 and 5.5 × 106 cells per cm2 for E. coli and S. aureus in 40 min, respectively) via physical and chemical effects. Bacteria in drinking water can be sensitively detected by using a combination of laser induced breakdown spectroscopy (LIBS) and label based surface-enhanced Raman spectroscopy (SERS) techniques. Due to the antibacterial activity of Au@Ag NPs and the physical stress exerted on SiNWs, the prepared biointerface also showed high antibacterial rates towards both Gram-positive and Gram-negative bacteria strains. With these excellent properties, the flexible sensing platform might open a new avenue for the prevention and control of microbial hazards in water.
Collapse
Affiliation(s)
- Wenlong Liao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | | | | | | | | |
Collapse
|
27
|
Cheng Y, Feng G, Moraru CI. Micro- and Nanotopography Sensitive Bacterial Attachment Mechanisms: A Review. Front Microbiol 2019; 10:191. [PMID: 30846973 PMCID: PMC6393346 DOI: 10.3389/fmicb.2019.00191] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 01/23/2019] [Indexed: 12/16/2022] Open
Abstract
Bacterial attachment to material surfaces can lead to the development of biofilms that cause severe economic and health problems. The outcome of bacterial attachment is determined by a combination of bacterial sensing of material surfaces by the cell and the physicochemical factors in the near-surface environment. This paper offers a systematic review of the effects of surface topography on a range of antifouling mechanisms, with a focus on how topographical scale, from micro- to nanoscale, may influence bacterial sensing of and attachment to material surfaces. A good understanding of these mechanisms can facilitate the development of antifouling surfaces based on surface topography, with applications in various sectors of human life and activity including healthcare, food, and water treatment.
Collapse
Affiliation(s)
- Yifan Cheng
- Department of Food Science, Cornell University, Ithaca, NY, United States
| | | | - Carmen I. Moraru
- Department of Food Science, Cornell University, Ithaca, NY, United States
| |
Collapse
|
28
|
Volbers D, Stierle VK, Ditzel KJ, Aschauer J, Rädler JO, Opitz M, Paulitschke P. Interference Disturbance Analysis Enables Single-Cell Level Growth and Mobility Characterization for Rapid Antimicrobial Susceptibility Testing. NANO LETTERS 2019; 19:643-651. [PMID: 30525694 DOI: 10.1021/acs.nanolett.8b02815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To support the emerging battle against antimicrobial resistance (AMR), detection methods that allow fast and accurate antimicrobial susceptibility testing (AST) are urgently needed. The early identification and application of an appropriate antibiotic treatment leads to lower mortality rates and substantial cost savings and prevents the development of resistant pathogens. In this work, we present a diffraction-based method, which is capable of quantitative bacterial growth, mobility, and susceptibility measurements. The method is based on the temporal analysis of the intensity of a light diffraction peak, which arises due to interference at a periodic pattern of gold nanostructures. The presence of bacteria disturbs the constructive interference, leading to an intensity decrease and thus allows the monitoring of bacterial growth in very low volumes. We demonstrate the direct correlation of the decrease in diffraction peak intensity with bacterial cell number starting from single cells and show the capability for rapid high-throughput AST measurements by determining the minimum inhibitory concentration for three different antimicrobials in less than 2-3 h as well as the susceptibility in less than 30-40 min. Furthermore, bacterial mobility is obtained from short-term fluctuations of the diffraction peak intensity and is shown to decrease by a factor of 3 during bacterial attachment to a surface. This multiparameter detection method allows for rapid AST of planktonic and of biofilm-forming bacterial strains in low volumes and in real-time without the need of high initial cell numbers.
Collapse
Affiliation(s)
- David Volbers
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| | - Valentin K Stierle
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| | - Konstantin J Ditzel
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| | - Julian Aschauer
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| | - Joachim O Rädler
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| | - Madeleine Opitz
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| | - Philipp Paulitschke
- Faculty of Physics and Center for NanoScience (CeNS) , Ludwig-Maximilians-Universität , Geschwister-Scholl-Platz1 , München D-80539 , Germany
| |
Collapse
|
29
|
Park HH, Sun K, Seong M, Kang M, Park S, Hong S, Jung H, Jang J, Kim J, Jeong HE. Lipid-Hydrogel-Nanostructure Hybrids as Robust Biofilm-Resistant Polymeric Materials. ACS Macro Lett 2019; 8:64-69. [PMID: 35619411 DOI: 10.1021/acsmacrolett.8b00888] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Despite extensive efforts toward developing antibiofilm materials, efficient prevention of biofilm formation remains challenging. Approaches based on a single strategy using either bactericidal material, antifouling coatings, or nanopatterning have shown limited performance in the prevention of biofilm formation. This study presents a hybrid strategy based on a lipid-hydrogel-nanotopography hybrid for the development of a highly efficient and durable biofilm-resistant material. The hybrid material consists of nanostructured antifouling, biocompatible polyethylene glycol-based polymer grafted with an antifouling zwitterionic polymer of 2-methacryloyloxyethyl phosphorylcholine. Based on the unique composite nanostructures, the lipid-hydrogel-nanostructure hybrid exhibits superior dual functionalities of antifouling and bactericidal activities against Gram-negative and Gram-positive bacteria, compared with those of surfaces with simple nanostructures or antifouling coatings. Additionally, it preserves the robust antibiofilm activity even when the material is damaged under external mechanical stimuli thanks to the polymeric composite nanostructure.
Collapse
Affiliation(s)
- Hyun-Ha Park
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Kahyun Sun
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Minho Seong
- 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
| | - Sunho Park
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seongkyeol Hong
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hosup Jung
- Center for Food and Bioconvergence, Department of Food Science and Biotechnology, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaesung Jang
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jangho Kim
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| |
Collapse
|
30
|
Nanomaterials for facilitating microbial extracellular electron transfer: Recent progress and challenges. Bioelectrochemistry 2018; 123:190-200. [DOI: 10.1016/j.bioelechem.2018.05.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/03/2018] [Accepted: 05/03/2018] [Indexed: 11/23/2022]
|
31
|
Kornienko N, Zhang JZ, Sakimoto KK, Yang P, Reisner E. Interfacing nature's catalytic machinery with synthetic materials for semi-artificial photosynthesis. NATURE NANOTECHNOLOGY 2018; 13:890-899. [PMID: 30291349 DOI: 10.1038/s41565-018-0251-7] [Citation(s) in RCA: 213] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 07/31/2018] [Indexed: 05/23/2023]
Abstract
Semi-artificial photosynthetic systems aim to overcome the limitations of natural and artificial photosynthesis while providing an opportunity to investigate their respective functionality. The progress and studies of these hybrid systems is the focus of this forward-looking perspective. In this Review, we discuss how enzymes have been interfaced with synthetic materials and employed for semi-artificial fuel production. In parallel, we examine how more complex living cellular systems can be recruited for in vivo fuel and chemical production in an approach where inorganic nanostructures are hybridized with photosynthetic and non-photosynthetic microorganisms. Side-by-side comparisons reveal strengths and limitations of enzyme- and microorganism-based hybrid systems, and how lessons extracted from studying enzyme hybrids can be applied to investigations of microorganism-hybrid devices. We conclude by putting semi-artificial photosynthesis in the context of its own ambitions and discuss how it can help address the grand challenges facing artificial systems for the efficient generation of solar fuels and chemicals.
Collapse
Affiliation(s)
- Nikolay Kornienko
- Department of Chemistry, University of Cambridge, Cambridge, UK
- Department of Chemistry, University of California, Berkeley, CA, USA
| | - Jenny Z Zhang
- Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Kelsey K Sakimoto
- Department of Chemistry, University of California, Berkeley, CA, USA
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
- Department of Systems Biology, Harvard Medical School, Boston, MA, USA
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
- Kavli Energy NanoSciences Institute, Berkeley, CA, USA.
- Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.
| | - Erwin Reisner
- Department of Chemistry, University of Cambridge, Cambridge, UK.
| |
Collapse
|
32
|
Berne C, Ellison CK, Ducret A, Brun YV. Bacterial adhesion at the single-cell level. Nat Rev Microbiol 2018; 16:616-627. [DOI: 10.1038/s41579-018-0057-5] [Citation(s) in RCA: 266] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
33
|
Xu L, Zhao Y, Owusu KA, Zhuang Z, Liu Q, Wang Z, Li Z, Mai L. Recent Advances in Nanowire-Biosystem Interfaces: From Chemical Conversion, Energy Production to Electrophysiology. Chem 2018. [DOI: 10.1016/j.chempr.2018.04.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
34
|
Katuri KP, Kalathil S, Ragab A, Bian B, Alqahtani MF, Pant D, Saikaly PE. Dual-Function Electrocatalytic and Macroporous Hollow-Fiber Cathode for Converting Waste Streams to Valuable Resources Using Microbial Electrochemical Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707072. [PMID: 29707854 DOI: 10.1002/adma.201707072] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Indexed: 06/08/2023]
Abstract
Dual-function electrocatalytic and macroporous hollow-fiber cathodes are recently proposed as promising advanced material for maximizing the conversion of waste streams such as wastewater and waste CO2 to valuable resources (e.g., clean freshwater, energy, value-added chemicals) in microbial electrochemical systems. The first part of this progress report reviews recent developments in this type of cathode architecture for the simultaneous recovery of clean freshwater and energy from wastewater. Critical insights are provided on suitable materials for fabricating these cathodes, as well as addressing some challenges in the fabrication process with proposed strategies to overcome them. The second and complementary part of the progress report highlights how the unique features of this cathode architecture can solve one of the intrinsic bottlenecks (gas-liquid mass transfer limitation) in the application of microbial electrochemical systems for CO2 reduction to value-added products. Strategies to further improve the availability of CO2 to microbial catalysts on the cathode are proposed. The importance of understanding microbe-cathode interactions, as well as electron transfer mechanisms at the cathode-cell and cell-cell interface to better design dual-function macroporous hollow-fiber cathodes, is critically discussed with insights on how the choice of material is important in facilitating direct electron transfer versus mediated electron transfer.
Collapse
Affiliation(s)
- Krishna P Katuri
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Shafeer Kalathil
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Ala'a Ragab
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Bin Bian
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Manal F Alqahtani
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Deepak Pant
- Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, 2400, Belgium
| | - Pascal E Saikaly
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| |
Collapse
|
35
|
Huang L, Liu XH, Zhang XH, Tan L, Liu CJ. A highly efficient bactericidal surface based on the co-capture function and photodynamic sterilization. J Mater Chem B 2018; 6:6831-6841. [DOI: 10.1039/c8tb02010h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Bacterial infection is posing a great threat to human life, and constructing a platform to capture or kill the bacteria attached on a material surface is of particular significance.
Collapse
Affiliation(s)
- Lin Huang
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Xin-Hua Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Xiao-Hong Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Lei Tan
- School of Materials Science & Engineering
- Hubei University
- Wuhan 430062
- P. R. China
| | - Chuan-Jun Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| |
Collapse
|
36
|
Guo D, Ji X, Wang H, Bin Sun BS, Chu B, Shi Y, Su Y, He Y. Silicon nanowire-based multifunctional platform for chemo-photothermal synergistic cancer therapy. J Mater Chem B 2018; 6:3876-3883. [DOI: 10.1039/c7tb02907a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new type of silicon nanowire-based pH/NIR/magnetism triple-responsive system shows high-efficacy synergistic photothermal-chemotherapy on cancer cells.
Collapse
Affiliation(s)
- Daoxia Guo
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Xiaoyuan Ji
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Houyu Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Bin Sun Bin Sun
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Binbin Chu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Yu Shi
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Yuanyuan Su
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| | - Yao He
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC)
- Soochow University
- Suzhou
| |
Collapse
|
37
|
Sakimoto KK, Kornienko N, Yang P. Cyborgian Material Design for Solar Fuel Production: The Emerging Photosynthetic Biohybrid Systems. Acc Chem Res 2017; 50:476-481. [PMID: 28945394 DOI: 10.1021/acs.accounts.6b00483] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Photosynthetic biohybrid systems (PBSs) combine the strengths of inorganic materials and biological catalysts by exploiting semiconductor broadband light absorption to capture solar energy and subsequently transform it into valuable CO2-derived chemicals by taking advantage of the metabolic pathways in living organisms. In this work, we first traverse through a brief history of recent PBSs, demonstrating the modularity and diversity of possible architectures to rival and, in many cases, surpass the performance of chemistry or biology alone before envisioning the future of these hybrid systems, opportunities for improvement, and its role in sustainable living here on earth and beyond.
Collapse
Affiliation(s)
- Kelsey K. Sakimoto
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Nikolay Kornienko
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Peidong Yang
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Department
of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Kavli Energy Nanosciences Institute, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| |
Collapse
|
38
|
Scheidegger L, Fernández-Rodríguez MÁ, Geisel K, Zanini M, Elnathan R, Richtering W, Isa L. Compression and deposition of microgel monolayers from fluid interfaces: particle size effects on interface microstructure and nanolithography. Phys Chem Chem Phys 2017; 19:8671-8680. [DOI: 10.1039/c6cp07896f] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlling the microstructure of monolayers of microgels confined at a water/oil interface is the key to their successful application as nanolithography masks after deposition on a solid substrate.
Collapse
Affiliation(s)
- Laura Scheidegger
- Laboratory for Interfaces
- Soft Matter and Assembly
- Department of Materials
- ETH Zurich
- 8093 Zurich
| | | | - Karen Geisel
- Institute of Physical Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Michele Zanini
- Laboratory for Interfaces
- Soft Matter and Assembly
- Department of Materials
- ETH Zurich
- 8093 Zurich
| | - Roey Elnathan
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- Future Industries Institute
- University of South Australia
- Mawson Lakes
- Australia
| | - Walter Richtering
- Institute of Physical Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Lucio Isa
- Laboratory for Interfaces
- Soft Matter and Assembly
- Department of Materials
- ETH Zurich
- 8093 Zurich
| |
Collapse
|
39
|
Aleinicov E, Ioisher A, Makhnovskiy D, Postolache V, Tiginyanu I, Ursaki V. Magnetic properties of microwires and filiform nanostructures with elongated magnetic inclusions. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2016. [DOI: 10.3103/s1068375516060028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
40
|
Yamamoto T, Emura C, Oya M. Cellular automaton simulation of the diffusive motion of bacteria and their adhesion to nanostructures on a solid surface. Comput Biol Med 2016; 79:173-181. [PMID: 27810623 DOI: 10.1016/j.compbiomed.2016.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/14/2016] [Accepted: 10/16/2016] [Indexed: 10/20/2022]
Abstract
The growth of a biofilm begins with the adhesion of bacteria to a solid surface. Consequently, biofilm growth can be managed by the control of bacterial adhesion. Recent experimental studies have suggested that bacterial adhesion can be controlled by modifying a solid surface using nanostructures. Computational prediction and analysis of bacterial adhesion behavior are expected to be useful for the design of effective arrangements of nanostructures for controlling bacterial adhesion. The present study developed a cellular automaton (CA) model for bacterial adhesion simulation that could describe both the diffusive motion of bacteria and dependence of their adhesion patterns on the distance between nanostructures observed in experimental studies. The diffusive motion was analyzed by the moment scaling spectrum theory, and the present model was confirmed to describe subdiffusion behavior due to obstacles. Adhesion patterns observed in experimental studies can be successfully simulated by introducing CA rules to describe a mechanism by which bacteria tend to move to increase the area of contact with nanostructures.
Collapse
Affiliation(s)
- Takehiro Yamamoto
- Department of Mechanical Engineering, Faculty of Engineering, Osaka Electro-Communication University, 18-8, Hatsu-cho, Neyagawa, Osaka 572-8530, Japan.
| | - Chie Emura
- Division of Mechanical Engineering, Graduate School of Engineering, Osaka University, Japan
| | - Masashi Oya
- Department of Mechanical Engineering, School of Engineering, Osaka University, Japan
| |
Collapse
|
41
|
Sahoo PK, Janissen R, Monteiro MP, Cavalli A, Murillo DM, Merfa MV, Cesar CL, Carvalho HF, de Souza AA, Bakkers EPAM, Cotta MA. Nanowire Arrays as Cell Force Sensors To Investigate Adhesin-Enhanced Holdfast of Single Cell Bacteria and Biofilm Stability. NANO LETTERS 2016; 16:4656-64. [PMID: 27336224 DOI: 10.1021/acs.nanolett.6b01998] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Surface attachment of a planktonic bacteria, mediated by adhesins and extracellular polymeric substances (EPS), is a crucial step for biofilm formation. Some pathogens can modulate cell adhesiveness, impacting host colonization and virulence. A framework able to quantify cell-surface interaction forces and their dependence on chemical surface composition may unveil adhesiveness control mechanisms as new targets for intervention and disease control. Here we employed InP nanowire arrays to dissect factors involved in the early stage biofilm formation of the phytopathogen Xylella fastidiosa. Ex vivo experiments demonstrate single-cell adhesion forces up to 45 nN, depending on the cell orientation with respect to the surface. Larger adhesion forces occur at the cell poles; secreted EPS layers and filaments provide additional mechanical support. Significant adhesion force enhancements were observed for single cells anchoring a biofilm and particularly on XadA1 adhesin-coated surfaces, evidencing molecular mechanisms developed by bacterial pathogens to create a stronger holdfast to specific host tissues.
Collapse
Affiliation(s)
- Prasana K Sahoo
- Applied Physics Department, Institute of Physics "Gleb Wataghin", State University of Campinas , 13083-859, Campinas, São Paulo, Brazil
| | - Richard Janissen
- Applied Physics Department, Institute of Physics "Gleb Wataghin", State University of Campinas , 13083-859, Campinas, São Paulo, Brazil
- Kavli Institute of Nanoscience, Delft University of Technology , 2629 HZ Delft, The Netherlands
| | - Moniellen P Monteiro
- Applied Physics Department, Institute of Physics "Gleb Wataghin", State University of Campinas , 13083-859, Campinas, São Paulo, Brazil
| | - Alessandro Cavalli
- Applied Physics Department, Eindhoven University of Technology , 5600 MB Eindhoven, The Netherlands
| | - Duber M Murillo
- Applied Physics Department, Institute of Physics "Gleb Wataghin", State University of Campinas , 13083-859, Campinas, São Paulo, Brazil
| | - Marcus V Merfa
- Citrus Center APTA "Sylvio Moreira", Agronomic Institute of Campinas , 13490-970, Cordeirópolis, São Paulo, Brazil
| | - Carlos L Cesar
- Quantum Electronics Department, Institute of Physics "Gleb Wataghin", State University of Campinas , 13083-859, Campinas, São Paulo, Brazil
| | - Hernandes F Carvalho
- Structural and Functional Biology Department, Institute of Biology, State University of Campinas , 13083-865, Campinas, São Paulo, Brazil
| | - Alessandra A de Souza
- Citrus Center APTA "Sylvio Moreira", Agronomic Institute of Campinas , 13490-970, Cordeirópolis, São Paulo, Brazil
| | - Erik P A M Bakkers
- Applied Physics Department, Eindhoven University of Technology , 5600 MB Eindhoven, The Netherlands
| | - Monica A Cotta
- Applied Physics Department, Institute of Physics "Gleb Wataghin", State University of Campinas , 13083-859, Campinas, São Paulo, Brazil
| |
Collapse
|
42
|
Zhang M, Zhao Y, Yan L, Peltier R, Hui W, Yao X, Cui Y, Chen X, Sun H, Wang Z. Interfacial Engineering of Bimetallic Ag/Pt Nanoparticles on Reduced Graphene Oxide Matrix for Enhanced Antimicrobial Activity. ACS APPLIED MATERIALS & INTERFACES 2016; 8:8834-40. [PMID: 27007980 DOI: 10.1021/acsami.6b01396] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Environmental biofouling caused by the formation of biofilm has been one of the most urgent global concerns. Silver nanoparticles (NPs), owing to their wide-spectrum antimicrobial property, have been widely explored to combat biofilm, but their extensive use has raised growing concern because they persist in the environment. Here we report a novel hybrid nanocomposite that imparts enhanced antimicrobial activity and low cytotoxicity yet with the advantage of reduced silver loading. The nanocomposite consists of Pt/Ag bimetallic NPs (BNPs) decorated on the porous reduced graphene oxide (rGO) nanosheets. We demonstrate that the enhanced antimicrobial property against Escherichia coli is ascribed to the intricate control of the interfaces between metal compositions, rGO matrix, and bacteria, where the BNPs lead to a rapid release of silver ions, and the trapping of bacteria by the porous rGO matrix further provides high concentration silver ion sites for efficient bacteria-bactericide interaction. We envision that our facile approach significantly expands the design space for the creation of silver-based antimicrobial materials to achieve a wide spectrum of functionalities.
Collapse
Affiliation(s)
| | | | | | | | - Wenli Hui
- The College of Life Sciences, Northwest University , Xi'an, Shaanxi Province China
| | | | - Yali Cui
- The College of Life Sciences, Northwest University , Xi'an, Shaanxi Province China
| | | | | | | |
Collapse
|
43
|
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.
Collapse
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
| |
Collapse
|
44
|
Kalathil S, Pant D. Nanotechnology to rescue bacterial bidirectional extracellular electron transfer in bioelectrochemical systems. RSC Adv 2016. [DOI: 10.1039/c6ra04734c] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Advanced nanostructured electrode materials largely improve the bacterial bidirectional extracellular electron transfer in bioelectrochemical systems.
Collapse
Affiliation(s)
- Shafeer Kalathil
- Division of Biological and Environmental Science & Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Deepak Pant
- Separation and Conversion Technology
- VITO – Flemish Institute for Technological Research
- 2400 Mol
- Belgium
| |
Collapse
|
45
|
Tan Z, Shi W, Guo C, Zhang Q, Yang L, Wu X, Cheng GA, Zheng R. Fabrication of ultra-thin silicon nanowire arrays using ion beam assisted chemical etching. NANOSCALE 2015; 7:17268-17273. [PMID: 26440414 DOI: 10.1039/c5nr02876k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Uniform dispersion of Au-Ag alloy nanoparticles underneath the surface of a Si wafer is realized via Au film pre-deposition and Ag ion implantation. The Au-Ag nanoparticles are used as catalysts in metal assisted chemical etching for fabricating Si nanowire arrays with average diameters of less than 10 nm. We find that the alloy catalysts introduced by ion implantation are the key to obtaining thin nanowire arrays and we also demonstrate that SiNWAs with various diameters could be simply produced by changing the thickness of the pre-deposited Au layer. Compared with the traditional process, ion beam assisted chemical etching is proven to be a convenient and efficient approach to fabricate ultra-thin SiNWAs on a large scale.
Collapse
Affiliation(s)
- Zhiyuan Tan
- Key Laboratory of Radiation Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China.
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Mencattini A, Orsini A, Falconi C. 3D Reconstruction of Quasi-1D Single-Crystal Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:6271-6276. [PMID: 26378901 DOI: 10.1002/adma.201503522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 08/20/2015] [Indexed: 06/05/2023]
Abstract
The accurate determination of the 3D geometries of single-crystal quasi-1D nanostructures is described, including sidelengths, perimeters, areas, lengths, and azimuth and elevation angles. This is a major step toward the synthesis of quasi-1D nanostructures with superior uniformity, and tightly controlled geometrical or geometry-dependent properties.
Collapse
Affiliation(s)
- Arianna Mencattini
- Department of Electronic Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Andrea Orsini
- Department of Electronic Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Christian Falconi
- Department of Electronic Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
- CNR IDASC, Via Fosso del Cavaliere, 100, 00133, Rome, Italy
| |
Collapse
|
47
|
Chen CY, Wong CP. Unveiling the shape-diversified silicon nanowires made by HF/HNO3 isotropic etching with the assistance of silver. NANOSCALE 2015; 7:1216-1223. [PMID: 25489862 DOI: 10.1039/c4nr05949b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hydrofluoric (HF)/nitric (HNO3)/acetic (CH3COOH) acid, normally referred to as the HNA method, is a widely utilized technique for performing isotropic etching on silicon (Si) in industrial Si-based processing and device construction. Here, we reported a novel etching strategy based on a HF/HNO3 process with the assistance of silver (Ag) nano-seeds, offering good controllability in preparing diversified Si nanostructure arrays with particularly smooth top surfaces. The involved mechanism was visualized by systematically investigating both the time and temperature dependencies on the etching kinetics with various ratios of HF to HNO3. Moreover, by testing different Ag(+)-ion containing oxidants on Si etching, we have re-examined the state-of-the-art metal-assisted chemical etching (MaCE) using HF/AgNO3 etchants. In contrast with previous reports, we found that the interplay of hole injections from Ag(+) and NO3(-) ions to the valence band of Si collectively contributes to the unidirectional dissolution of Si. Finally, we explored the engineering of the Ag nano-seeds to regularize the orientation of the etched nanowires formed on non-Si (100) wafers, which further provides a reliable pathway for constructing the desired morphologies of one-dimensional Si nanostructures regardless of wafer orientation.
Collapse
Affiliation(s)
- Chia-Yun Chen
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, No.1, Daxue Rd., Puli Township, Nantou County 545, Taiwan.
| | | |
Collapse
|
48
|
Son M, Lee G, Son J, Choi S, Kim Y, Lee SY, Yoon YR, Yoon DS, Lee SW. Characterization of anomalous movements of spherical living cells on a silicon dioxide glassy substrate. BIOMICROFLUIDICS 2015; 9:014102. [PMID: 25610514 PMCID: PMC4288934 DOI: 10.1063/1.4905577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 12/26/2014] [Indexed: 06/04/2023]
Abstract
The random walk of spherical living cells on a silicon dioxide glassy substrate was studied experimentally and numerically. This random walk trajectory exhibited erratic dancing, which seemingly obeyed anomalous diffusion (i.e., Lévy-like walk) rather than normal diffusion. Moreover, the angular distribution (-π to π) of the cells' trajectory followed a "U-shaped pattern" in comparison to the uniform distribution seen in the movements of negatively charged polystyrene microspheres. These effects could be attributable to the homeostasis-driven structural resilient character of cells and physical interactions derived from temporarily retained nonspecific binding due to weak forces between the cells and substrates. Our results provide new insights into the stochastic behavior of mesoscopic biological particles with respect to structural properties and physical interactions.
Collapse
Affiliation(s)
- Myeonggu Son
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Gyudo Lee
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Jongsang Son
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Seungyeop Choi
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Youngho Kim
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Sei-Young Lee
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Young-Ro Yoon
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| | - Dae Sung Yoon
- School of Biomedical Engineering, Korea University , Seoul 136-703, South Korea
| | - Sang Woo Lee
- Department of Biomedical Engineering, Yonsei University , Wonju 220-710, South Korea
| |
Collapse
|
49
|
Xie X, Zhao W, Lee HR, Liu C, Ye M, Xie W, Cui B, Criddle CS, Cui Y. Enhancing the nanomaterial bio-interface by addition of mesoscale secondary features: crinkling of carbon nanotube films to create subcellular ridges. ACS NANO 2014; 8:11958-11965. [PMID: 25415858 DOI: 10.1021/nn504898p] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Biological cells often interact with their local environment through subcellular structures at a scale of tens to hundreds of nanometers. This study investigated whether topographic features fabricated at a similar scale would impact cellular functions by promoting the interaction between subcellular structures and nanomaterials. Crinkling of carbon nanotube films by solvent-induced swelling and shrinkage of substrate resulted in the formation of ridge features at the subcellular scale on both flat and three-dimensional substrates. Biological cells grown upon these crinkled CNT films had enhanced activity: neuronal cells grew to higher density and displayed greater cell polarization; exoelectrogenic micro-organisms transferred electrons more efficiently. The results indicate that crinkling of thin CNT films creates secondary mesoscale features that enhance attachment, growth, and electron transfer.
Collapse
Affiliation(s)
- Xing Xie
- Department of Civil and Environmental Engineering, Stanford University , 473 Via Ortega, Stanford, California 94305, United States
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Hol FJH, Dekker C. Zooming in to see the bigger picture: microfluidic and nanofabrication tools to study bacteria. Science 2014; 346:1251821. [PMID: 25342809 DOI: 10.1126/science.1251821] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The spatial structure of natural habitats strongly affects bacterial life, ranging from nanoscale structural features that individual cells exploit for surface attachment, to micro- and millimeter-scale chemical gradients that drive population-level processes. Nanofabrication and microfluidics are ideally suited to manipulate the environment at those scales and have emerged as powerful tools with which to study bacteria. Here, we review the new scientific insights gained by using a diverse set of nanofabrication and microfluidic techniques to study individual bacteria and multispecies communities. This toolbox is beginning to elucidate disparate bacterial phenomena-including aging, electron transport, and quorum sensing-and enables the dissection of environmental communities through single-cell genomics. A more intimate integration of microfluidics, nanofabrication, and microbiology will enable further exploration of bacterial life at the smallest scales.
Collapse
Affiliation(s)
- Felix J H Hol
- Department of Bionanoscience, Kavli Institute of Nanoscience, Delft University of Technology, Delft, Netherlands
| | - Cees Dekker
- Department of Bionanoscience, Kavli Institute of Nanoscience, Delft University of Technology, Delft, Netherlands.
| |
Collapse
|