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Yibibulla T, Hou L, Mead JL, Huang H, Fatikow S, Wang S. Frictional behavior of one-dimensional materials: an experimental perspective. NANOSCALE ADVANCES 2024; 6:3251-3284. [PMID: 38933866 PMCID: PMC11197433 DOI: 10.1039/d4na00039k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 05/08/2024] [Indexed: 06/28/2024]
Abstract
The frictional behavior of one-dimensional (1D) materials, including nanotubes, nanowires, and nanofibers, significantly influences the efficient fabrication, functionality, and reliability of innovative devices integrating 1D components. Such devices comprise piezoelectric and triboelectric nanogenerators, biosensing and implantable devices, along with biomimetic adhesives based on 1D arrays. This review compiles and critically assesses recent experimental techniques for exploring the frictional behavior of 1D materials. Specifically, it underscores various measurement methods and technologies employing atomic force microscopy, electron microscopy, and optical microscopy nanomanipulation. The emphasis is on their primary applications and challenges in measuring and characterizing the frictional behavior of 1D materials. Additionally, we discuss key accomplishments over the past two decades in comprehending the frictional behaviors of 1D materials, with a focus on factors such as materials combination, interface roughness, environmental humidity, and non-uniformity. Finally, we offer a brief perspective on ongoing challenges and future directions, encompassing the systematic investigation of the testing environment and conditions, as well as the modification of surface friction through surface alterations.
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Affiliation(s)
- Tursunay Yibibulla
- School of Physics, Central South University Changsha 410083 P. R. China
- School of Physics and Electronics, Nanning Normal University Nanning 530001 P. R. China
| | - Lizhen Hou
- School of Physics and Electronics, Hunan Normal University Changsha 410083 P. R. China
| | - James L Mead
- Division Microrobotics and Control Engineering, Department of Computing Science, University of Oldenburg D-26129 Oldenburg Germany
| | - Han Huang
- School of Advanced Manufacturing, Sun-Yat-sen University Shenzhen 518107 P. R. China
| | - Sergej Fatikow
- Division Microrobotics and Control Engineering, Department of Computing Science, University of Oldenburg D-26129 Oldenburg Germany
| | - Shiliang Wang
- School of Physics, Central South University Changsha 410083 P. R. China
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Luo L, Manda S, Park Y, Demir B, Sanchez J, Anantram MP, Oren EE, Gopinath A, Rolandi M. DNA nanopores as artificial membrane channels for bioprotonics. Nat Commun 2023; 14:5364. [PMID: 37666808 PMCID: PMC10477224 DOI: 10.1038/s41467-023-40870-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 08/14/2023] [Indexed: 09/06/2023] Open
Abstract
Biological membrane channels mediate information exchange between cells and facilitate molecular recognition. While tuning the shape and function of membrane channels for precision molecular sensing via de-novo routes is complex, an even more significant challenge is interfacing membrane channels with electronic devices for signal readout, which results in low efficiency of information transfer - one of the major barriers to the continued development of high-performance bioelectronic devices. To this end, we integrate membrane spanning DNA nanopores with bioprotonic contacts to create programmable, modular, and efficient artificial ion-channel interfaces. Here we show that cholesterol modified DNA nanopores spontaneously and with remarkable affinity span the lipid bilayer formed over the planar bio-protonic electrode surface and mediate proton transport across the bilayer. Using the ability to easily modify DNA nanostructures, we illustrate that this bioprotonic device can be programmed for electronic recognition of biomolecular signals such as presence of Streptavidin and the cardiac biomarker B-type natriuretic peptide, without modifying the biomolecules. We anticipate this robust interface will allow facile electronic measurement and quantification of biomolecules in a multiplexed manner.
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Affiliation(s)
- Le Luo
- Department of Electrical and Computer Engineering, Jack Baskin School of Engineering, University of California, Santa Cruz, Santa Cruz, CA, 95064, USA
| | - Swathi Manda
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Yunjeong Park
- Department of Electrical and Computer Engineering, Jack Baskin School of Engineering, University of California, Santa Cruz, Santa Cruz, CA, 95064, USA
| | - Busra Demir
- Bionanodesign Laboratory, Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara, 06560, Turkey
- Department of Materials Science and Nanotechnology Engineering, TOBB University of Economics and Technology, Ankara, 06560, Turkey
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Jesse Sanchez
- Department of Electrical and Computer Engineering, Jack Baskin School of Engineering, University of California, Santa Cruz, Santa Cruz, CA, 95064, USA
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - M P Anantram
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Ersin Emre Oren
- Bionanodesign Laboratory, Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara, 06560, Turkey
- Department of Materials Science and Nanotechnology Engineering, TOBB University of Economics and Technology, Ankara, 06560, Turkey
| | - Ashwin Gopinath
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Marco Rolandi
- Department of Electrical and Computer Engineering, Jack Baskin School of Engineering, University of California, Santa Cruz, Santa Cruz, CA, 95064, USA.
- UC Santa Cruz Genomics Institute, University of California Santa Cruz, Santa Cruz, CA, 95060, USA.
- Institute for the Biology of Stem Cells, University of California Santa Cruz, Santa Cruz, CA, 95064, USA.
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Gonçalves JP, Promlok D, Ivanov T, Tao S, Rheinberger T, Jo SM, Yu Y, Graf R, Wagner M, Crespy D, Wurm FR, Caire da Silva L, Jiang S, Landfester K. Confining the Sol-Gel Reaction at the Water/Oil Interface: Creating Compartmentalized Enzymatic Nano-Organelles for Artificial Cells. Angew Chem Int Ed Engl 2023; 62:e202216966. [PMID: 36517933 DOI: 10.1002/anie.202216966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Living organisms compartmentalize their catalytic reactions in membranes for increased efficiency and selectivity. To mimic the organelles of eukaryotic cells, we develop a mild approach for in situ encapsulating enzymes in aqueous-core silica nanocapsules. In order to confine the sol-gel reaction at the water/oil interface of miniemulsion, we introduce an aminosilane to the silica precursors, which serves as both catalyst and an amphiphilic anchor that electrostatically assembles with negatively charged hydrolyzed alkoxysilanes at the interface. The semi-permeable shell protects enzymes from proteolytic attack, and allows the transport of reactants and products. The enzyme-carrying nanocapsules, as synthetic nano-organelles, are able to perform cascade reactions when enveloped in a polymer vesicle, mimicking the hierarchically compartmentalized reactions in eukaryotic cells. This in situ encapsulation approach provides a versatile platform for the delivery of biomacromolecules.
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Affiliation(s)
- Jenifer Pendiuk Gonçalves
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.,Federal University of Paraná, Av. Cel Francisco H dos Santos, s/n, CEP, 81530-980, Curitiba, PR, Brazil
| | - Duangkamol Promlok
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Tsvetomir Ivanov
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Shijia Tao
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Timo Rheinberger
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Seong-Min Jo
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Yingjie Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Robert Graf
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Manfred Wagner
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Frederik R Wurm
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Lucas Caire da Silva
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Shuai Jiang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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Abbondanza G, Larsson A, Linpé W, Hetherington C, Carlá F, Lundgren E, Harlow GS. Templated electrodeposition as a scalable and surfactant-free approach to the synthesis of Au nanoparticles with tunable aspect ratios. NANOSCALE ADVANCES 2022; 4:2452-2467. [PMID: 36134135 PMCID: PMC9417724 DOI: 10.1039/d2na00188h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/07/2022] [Indexed: 06/16/2023]
Abstract
A high-throughput method for the fabrication of ordered arrays of Au nanoparticles is presented. It is based on pulsed electrodeposition into porous anodic alumina templates. In contrast to many synthesis routes, it is cyanide-free, prior separation of the alumina template from the aluminium substrate is not required, and the use of contaminating surfactants/capping agents often found in colloidal synthesis is avoided. The aspect ratio of the nanoparticles can also be tuned by selecting an appropriate electrodeposition time. We show how to fabricate arrays of nanoparticles, both with branched bases and with hemispherical bases. Furthermore, we compare the different morphologies produced with electron microscopies and grazing-incidence synchrotron X-ray diffraction. We find the nanoparticles are polycrystalline in nature and are compressively strained perpendicular to the direction of growth, and expansively strained along the direction of growth. We discuss how this can produce dislocations and twinning defects that could be beneficial for catalysis.
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Affiliation(s)
- Giuseppe Abbondanza
- Division of Synchrotron Radiation Research, Lund University 221 00 Lund Sweden
- NanoLund, Lund University 221 00 Lund Sweden
| | - Alfred Larsson
- Division of Synchrotron Radiation Research, Lund University 221 00 Lund Sweden
- NanoLund, Lund University 221 00 Lund Sweden
| | - Weronica Linpé
- Division of Synchrotron Radiation Research, Lund University 221 00 Lund Sweden
| | | | | | - Edvin Lundgren
- Division of Synchrotron Radiation Research, Lund University 221 00 Lund Sweden
| | - Gary S Harlow
- Materials Science and Applied Mathematics, Malmö University 20506 Malmö Sweden
- MAX IV Laboratory, Lund University Fotongatan 2 224 84 Lund Sweden
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5
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Preparation, Properties and Applications of the Hybrid Organic/Inorganic Nanocomposite Based on Nanoporous Carbon Matrix. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02050-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Smok W, Tański T. A Short Review on Various Engineering Applications of Electrospun One-Dimensional Metal Oxides. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5139. [PMID: 34576365 PMCID: PMC8471542 DOI: 10.3390/ma14185139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 11/17/2022]
Abstract
The growing scientific interest in one-dimensional (1D) nanostructures based on metal-oxide semiconductors (MOS) resulted in the analysis of their structure, properties and fabrication methods being the subject of many research projects and publications all over the world, including in Poland. The application of the method of electrospinning with subsequent calcination for the production of these materials is currently very popular, which results from its simplicity and the possibility to control the properties of the obtained materials. The growing trend of industrial application of electrospun 1D MOS and the progress in modern technologies of nanomaterials properties investigations indicate the necessity to maintain the high level of research and development activities related to the structure and properties analysis of low-dimensional nanomaterials. Therefore, this review perfectly fits both the global trends and is a summary of many years of research work in the field of electrospinning carried out in many research units, especially in the Department of Engineering Materials and Biomaterials of the Faculty of Mechanical Engineering and Technology of Silesian University of Technology, as well as an announcement of further activities in this field.
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Affiliation(s)
- Weronika Smok
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland;
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Asghari S, Rezaei Z, Mahmoudifard M. Electrospun nanofibers: a promising horizon toward the detection and treatment of cancer. Analyst 2020; 145:2854-2872. [PMID: 32096500 DOI: 10.1039/c9an01987a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Due to the increase in the number of cancer patients, because of environmental parameters, high stress, low immunity, etc., there is an urgent need to develop cost-effective sensors for early targeted detection of cancerous cells with adequate selectivity and efficiency. Early disease diagnosis is important, as it is necessary to start treatments before disease progression. On the other hand, we need new, more efficient cancer treatment approaches with minimized side effects, more biocompatibility, and easy disposal. Nanobiotechnology is a field that can assist in developing new diagnostic and treatment approaches, specifically in fatal cancers. Herein, a study on the different applications of nanofibers in cancer detection as well as its treatment has been done. Here, a very brief survey on the main structure of biosensors and their different categories has been conducted and will precede the discussion of the study to serve as a reference and guide the reader's understanding.
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Affiliation(s)
- Sahar Asghari
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.
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8
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TiO2/ZnO Nanofibers Prepared by Electrospinning and Their Photocatalytic Degradation of Methylene Blue Compared with TiO2 Nanofibers. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163404] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
TiO2 nanofibers have high chemical stability and high strength and are applied to many fields such as air pollution sensors and air pollutant removal filters. ZnO nanofibers also have very high absorptivity in that air and are used as germicides and ceramic brighteners. TiO2/ZnO nanofibers, which have a composite form of TiO2 and ZnO, were fabricated and show higher photocatalytic properties than existing TiO2. The precursor, including zinc nitrate hexahydrate, polyvinyl acetate, and titanium isopropoxide, was used as a spinning solution for TiO2/ZnO nanofibers. Electrospun TiO2/ZnO nanofibers were calcined at 600 °C and analyzed by field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD). The average diameter of TiO2/ZnO nanofibers was controlled in the range of 189 nm to 1025 nm. XRD pattern in TiO2/ZnO nanofibers have a TiO2 anatase, ZnO, Ti2O3, and ZnTiO3 structure. TiO2/ZnO nanofibers with a diameter of 400 nm have the best photocatalytic performance in the methylene blue degradation experiments and an absorbance decrease of 96.4% was observed after ultraviolet (UV) irradiation of 12 h.
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9
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Baby T, Jose E T, Thomas P, Mathew JT. A cost effective and facile approach to prepare beadless polycarbonate nanofibers with ultrafine fiber morphology. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Thomas Baby
- Department of ChemistryKuriakose Gregorios College Pampady Kottayam Kerala India
| | - Tomlal Jose E
- Department of ChemistrySt. Berchmans College Changanacherry Kerala India
| | - P.C. Thomas
- Department of ChemistrySt. Berchmans College Changanacherry Kerala India
| | - Jomit T. Mathew
- Department of ChemistrySt. Berchmans College Changanacherry Kerala India
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10
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Manjua AC, Alves VD, Crespo JG, Portugal CAM. Magnetic Responsive PVA Hydrogels for Remote Modulation of Protein Sorption. ACS APPLIED MATERIALS & INTERFACES 2019; 11:21239-21249. [PMID: 31141340 DOI: 10.1021/acsami.9b03146] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This work shows the ability to reversibly modulate the hydrophilicity of the hydrogels doped with iron oxide nanoparticles (MNPs) in a noninvasive way when exposed to a cyclic variation of the intensity (ON/OFF) of an external magnetic field. A reversible switching of surface contact angles was observed for magnetic PVA hydrogels when exposed to consecutive variation of the magnetic field intensity between 0 and 0.08 T. Motivated by the magnetic dependence of the hydrophilicity of these hybrid hydrogels, the impact of the magnetic field on protein sorption was also evaluated. The noninvasive regulation of protein sorption-released mechanisms was achieved by ON/OFF magnetic field switches, suggesting the possible influence of magnetic-induced hydrogel shrinking effect and changes of surface wettability on protein sorption. The capacity to magnetically modulate surface wettability and protein sorption make these magnetic hydrogels promising candidates for development of functional devices for tissue engineering, drug release applications, or biosensor systems, where the control of protein sorption and mobility are essential steps to improve the efficiency of these processes.
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Affiliation(s)
- Ana C Manjua
- LAQV-Requimte , FCT-Universidade Nova de Lisboa , Campus da Caparica, 2829-516 Caparica , Portugal
- Department of Bioengineering and iBB-Institute for Bioengineering and Biosciences , IST-Universidade de Lisboa , Av. Rovisco Pais , 1049-001 Lisboa , Portugal
| | - Vitor D Alves
- LEAF-Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia , Universidade de Lisboa , Tapada da Ajuda , 1349-017 Lisboa , Portugal
| | - João G Crespo
- LAQV-Requimte , FCT-Universidade Nova de Lisboa , Campus da Caparica, 2829-516 Caparica , Portugal
| | - Carla A M Portugal
- LAQV-Requimte , FCT-Universidade Nova de Lisboa , Campus da Caparica, 2829-516 Caparica , Portugal
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11
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Mao W, He J, Tang Z, Zhang C, Chen J, Li J, Yu C. A sensitive sandwich-type immunosensor for the detection of MCP-1 based on a rGO-TEPA-Thi-Au nanocomposite and novel RuPdPt trimetallic nanoalloy particles. Biosens Bioelectron 2019; 131:67-73. [DOI: 10.1016/j.bios.2019.02.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 12/10/2018] [Accepted: 02/05/2019] [Indexed: 10/27/2022]
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Farzin L, Shamsipur M, Samandari L, Sheibani S. Advances in the design of nanomaterial-based electrochemical affinity and enzymatic biosensors for metabolic biomarkers: A review. Mikrochim Acta 2018; 185:276. [PMID: 29721621 DOI: 10.1007/s00604-018-2820-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/24/2018] [Indexed: 10/17/2022]
Abstract
This review (with 340 refs) focuses on methods for specific and sensitive detection of metabolites for diagnostic purposes, with particular emphasis on electrochemical nanomaterial-based sensors. It also covers novel candidate metabolites as potential biomarkers for diseases such as neurodegenerative diseases, autism spectrum disorder and hepatitis. Following an introduction into the field of metabolic biomarkers, a first major section classifies electrochemical biosensors according to the bioreceptor type (enzymatic, immuno, apta and peptide based sensors). A next section covers applications of nanomaterials in electrochemical biosensing (with subsections on the classification of nanomaterials, electrochemical approaches for signal generation and amplification using nanomaterials, and on nanomaterials as tags). A next large sections treats candidate metabolic biomarkers for diagnosis of diseases (in the context with metabolomics), with subsections on biomarkers for neurodegenerative diseases, autism spectrum disorder and hepatitis. The Conclusion addresses current challenges and future perspectives. Graphical abstract This review focuses on the recent developments in electrochemical biosensors based on the use of nanomaterials for the detection of metabolic biomarkers. It covers the critical metabolites for some diseases such as neurodegenerative diseases, autism spectrum disorder and hepatitis.
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Affiliation(s)
- Leila Farzin
- Radiation Application Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-3486, Tehran, Iran.
| | - Mojtaba Shamsipur
- Department of Chemistry, Razi University, P.O. Box 67149-67346, Kermanshah, Iran
| | - Leila Samandari
- Department of Chemistry, Razi University, P.O. Box 67149-67346, Kermanshah, Iran
| | - Shahab Sheibani
- Radiation Application Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-3486, Tehran, Iran
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Trimetallic Pd@Au@Pt nanocomposites platform on -COOH terminated reduced graphene oxide for highly sensitive CEA and PSA biomarkers detection. Biosens Bioelectron 2018; 100:16-22. [DOI: 10.1016/j.bios.2017.08.045] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 08/11/2017] [Accepted: 08/21/2017] [Indexed: 01/19/2023]
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El Kurdi R, Patra D. Tuning the surface of Au nanoparticles using poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol): enzyme free and label free sugar sensing in serum samples using resonance Rayleigh scattering spectroscopy. Phys Chem Chem Phys 2018; 20:9616-9629. [DOI: 10.1039/c8cp01147h] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (F-108) functionalized gold nanoparticles (Au NPs) have been successfully synthesized for glucose estimation.
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Affiliation(s)
- Riham El Kurdi
- Department of Chemistry
- American University of Beirut
- Beirut
- Lebanon
| | - Digambara Patra
- Department of Chemistry
- American University of Beirut
- Beirut
- Lebanon
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Fabrication of Nanostructures with Bottom-up Approach and Their Utility in Diagnostics, Therapeutics, and Others. ENVIRONMENTAL, CHEMICAL AND MEDICAL SENSORS 2017. [PMCID: PMC7122830 DOI: 10.1007/978-981-10-7751-7_8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nanofabrication has been a critical area of research in the last two decades and has found wide-ranging application in improvising material properties, sensitive clinical diagnostics, and detection, improving the efficiency of electron transport processes within materials, generating high energy densities leading to pulse power, novel therapeutic mechanisms, environmental remediation and control. The continued improvements in the various fabrication technologies have led to realization of highly sensitive nanostructure-based devices. The fabrication of nanostructures is in principle carried out primarily using top-down or bottom-up approaches. This chapter summarizes the important bottom-up nanofabrication processes for realizing nanostructures and also highlights the recent research conducted in the domain of therapeutics and diagnostics.
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16
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Bharat LK, Dugasani SR, Seeta Rama Raju G, Yu JS. Preparation of Eu 3+ ions activated Ca 2La 8(SiO 4) 6O 2 oxyapatite nanophosphors through two-step surfactant-free method and their optical and electrical properties. NANOTECHNOLOGY 2017; 28:375601. [PMID: 28825415 DOI: 10.1088/1361-6528/aa7dad] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Eu3+ ions activated Ca2La8(SiO4)6O2 (CLSO):Eu3+ nanophosphor samples were synthesized by a mixed solvothermal and hydrothermal method. The samples were carefully studied using various characterization techniques. The XRD patterns of CLSO:Eu3+ and CLSO confirmed that the samples were crystallized in hexagonal phase with a space group of P63/m (176). The morphology of the nanoparticles was studied by varying the reaction parameters such as growth, temperature and time. The photoluminescence (PL) excitation and PL emission spectra exhibited the typical Eu3+ bands in the wavelength range of 200-550 nm and 400-750 nm, respectively. The intensity of the [Formula: see text] electric dipole (ED) transition peak was strong in the PL emission spectrum which imparts the red color when observed under ultraviolet light. The ED transition peak intensity increased when the sample was calcined at an elevated temperature of 700 °C, indicating improved asymmetry ratio and good chromaticity coordinates. The electrical properties of the prepared materials were studied by spin-coating the powder dispersed solutions on the silica substrate. The output current values were also measured for the CLSO nanoparticles prepared under different growth conditions. These results showed the advantages of CLSO nanoparticles for their application in optics and feasibility in nanoelectronic and energy harvesting devices.
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Affiliation(s)
- L Krishna Bharat
- Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
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Jayapala Rao GVS, Prasad TNVKV, Shameer S, Arun T, Purnachandra Rao M. First report on soapnut extract-mediated synthesis of sulphur-substituted nanoscale NdFeB permanent magnets and their characterization. APPLIED NANOSCIENCE 2017. [DOI: 10.1007/s13204-017-0588-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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TermehYousefi A, Tanaka H, Bagheri S. Enhancement of glucose oxide electron-transfer mechanism in glucose biosensor via optimum physical chemistry of functionalized carbon nanotubes. REV CHEM ENG 2017. [DOI: 10.1515/revce-2015-0051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractNanostructures are a viable candidate for the construction of simple blood sugar monitoring devices. Electrochemical oxidation based on the immobilization of glucose oxidase (GOx) on carbon nanostructures has paved the way for a modern approach to the determination of glucose levels in blood. Carbon nanotubes (CNTs) exhibit excellent electrical properties, resulting in increased interest in glucose biosensors based on CNTs. Its large surface area and optimum aspect ratio increase the total amount of immobilized biomaterials onto its surface. In this contribution, recent advances in the development of reliable methods to improve the electron-transfer mechanism of GOx in CNT-based glucose biosensors are highlighted. Moreover, mass production and growth mechanism of purified CNTs by chemical vapor deposition were discussed by emphasizing its growth-control aspects.
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Mphuthi NG, Adekunle AS, Ebenso EE. Electrocatalytic oxidation of Epinephrine and Norepinephrine at metal oxide doped phthalocyanine/MWCNT composite sensor. Sci Rep 2016; 6:26938. [PMID: 27245690 PMCID: PMC4887908 DOI: 10.1038/srep26938] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 05/06/2016] [Indexed: 11/18/2022] Open
Abstract
Glassy carbon electrode (GCE) was modified with metal oxides (MO = Fe3O4, ZnO) nanoparticles doped phthalocyanine (Pc) and functionalized MWCNTs, and the electrocatalytic properties were studied. Successful synthesis of the metal oxide nanoparticles and the MO/Pc/MWCNT composite were confirmed using FTIR, Raman and SEM techniques. The electrodes were characterized using cyclic voltammetry (CV) technique. The electrocatalytic behaviour of the electrode towards epinephrine (EP) and norepinephrine (NE) oxidation was investigated using CV and DPV. Result showed that GCE-MWCNT/Fe3O4/2,3-Nc, GCE-MWCNT/Fe3O429H,31H-Pc, GCE-MWCNT/ZnO/2,3-Nc and GCE-MWCNT/ZnO/29H,31H-Pc electrodes gave enhanced EP and NE current response. Stability study indicated that the four GCE-MWCNT/MO/Pc modified electrodes were stable against electrode fouling effect with the percentage NE current drop of 5.56–5.88% after 20 scans. GCE-MWCNT/Fe3O4/29H,31H-Pc gave the lowest limit of detection (4.6 μM) towards EP while MWCNT/ZnO/29H,31H-Pc gave the lowest limit of detection (1.7 μM) towards NE. The limit of detection and sensitivity of the electrodes compared well with literature. Electrocatalytic oxidation of EP and NE on GCE-MWCNT/MO/Pc electrodes was diffusion controlled with some adsorption of electro-oxidation reaction intermediates products. The electrodes were found to be electrochemically stable, reusable and can be used for the analysis of EP and NE in real life samples.
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Affiliation(s)
- Ntsoaki G Mphuthi
- Material Science Innovation &Modelling (MaSIM) Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
| | - Abolanle S Adekunle
- Material Science Innovation &Modelling (MaSIM) Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa.,Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Eno E Ebenso
- Material Science Innovation &Modelling (MaSIM) Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
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Thomas A, Heinemann L, Ramírez A, Zehe A. Options for the Development of Noninvasive Glucose Monitoring: Is Nanotechnology an Option to Break the Boundaries? J Diabetes Sci Technol 2016; 10:782-9. [PMID: 26581879 PMCID: PMC5038528 DOI: 10.1177/1932296815616133] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Nowadays nanotechnology has many applications in products used in various areas of daily life; however, this technology has also an option in modern medicine and pharmacy. Therefore, this technology is also an attractive option for the field of diagnosis and treatment of diabetes. Many people with diabetes measure their blood glucose levels regularly to determine the insulin dose. Ideally glucose values would be measured noninvasively (NI). However, none of all the NI approaches studied in the past decades enabled reliable NI measurements under all daily life conditions. Particularly an unfavorable signal-to-noise ratio turned out to be problematic. Based on the known physical possibilities for NI glucose monitoring the focus of this review is on nanotechnology approaches. Functional prototypes exist for some of these that showed promising results under defined laboratory conditions, indicating a good sensitivity and selectivity for glucose. On the second hand is to optimize the technological process of manufacturing. In view of the rapid progress in micro- and nanoelectronics hopefully NI glucose monitoring systems can be developed in the near future.
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Affiliation(s)
| | | | - Araceli Ramírez
- Laboratorio de Nanotrónica, Benemérita Universidad Autónoma de Puebla (BUAP), Ciudad Universitaria, Puebla, México
| | - Alfred Zehe
- Laboratorio de Nanotrónica, Benemérita Universidad Autónoma de Puebla (BUAP), Ciudad Universitaria, Puebla, México
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Rezaei B, Ghani M, Shoushtari AM, Rabiee M. Electrochemical biosensors based on nanofibres for cardiac biomarker detection: A comprehensive review. Biosens Bioelectron 2015; 78:513-523. [PMID: 26657595 DOI: 10.1016/j.bios.2015.11.083] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/18/2015] [Accepted: 11/27/2015] [Indexed: 12/11/2022]
Abstract
The vital importance of early and accurate diagnosis of cardiovascular diseases (CVDs) to prevent the irreversible damage or even death of patients has driven the development of biosensor devices for detection and quantification of cardiac biomarkers. Electrochemical biosensors offer rapid sensing, low cost, portability and ease of use. Over the past few years, nanotechnology has contributed to a tremendous improvement in the sensitivity of biosensors. In this review, the authors summarise the state-of-the-art of the application of one particular type of nanostructured material, i.e. nanofibres, for use in electrochemical biosensors for the ultrasensitive detection of cardiac biomarkers. A new way of classifying the nanofibre-based electrochemical biosensors according to the electrical conductance and the type of nanofibres is presented. Some key data from each article reviewed are highlighted, including the mechanism of detection, experimental conditions and the response range of the biosensor. The primary aim of this review is to emphasise the prospects for nanofibres for the future development of biosensors in diagnosis of CVDs as well as considering how to improve their characteristics for application in medicine.
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Affiliation(s)
- Babak Rezaei
- Nanotechnology Institute, Amirkabir University of Technology, Tehran 15875-4413, Iran; Department of Textile Engineering, AmirKabir University of Technology, Tehran 15875-4413, Iran
| | - Mozhdeh Ghani
- Nanotechnology Institute, Amirkabir University of Technology, Tehran 15875-4413, Iran; Department of Textile Engineering, AmirKabir University of Technology, Tehran 15875-4413, Iran
| | - Ahmad Mousavi Shoushtari
- Nanotechnology Institute, Amirkabir University of Technology, Tehran 15875-4413, Iran; Department of Textile Engineering, AmirKabir University of Technology, Tehran 15875-4413, Iran.
| | - Mohammad Rabiee
- Biomaterials Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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22
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Studies on electrochemical and peroxidase mimetic behavior of Prussian blue nanoparticles in presence of Pd-WO3-SiO2 Nanocomposite; bioelectro-catalytic sensing of H2O2. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Ernest V, Sekar G, Mukherjee A, Chandrasekaran N. Studies on the effect of AgNP binding on α-amylase structure of porcine pancreas and Bacillus subtilis by multi-spectroscopic methods. JOURNAL OF LUMINESCENCE 2014; 146:263-268. [DOI: 10.1016/j.jlumin.2013.09.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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24
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Nesakumar N, Thandavan K, Sethuraman S, Krishnan UM, Rayappan JBB. An electrochemical biosensor with nanointerface for lactate detection based on lactate dehydrogenase immobilized on zinc oxide nanorods. J Colloid Interface Sci 2014; 414:90-6. [DOI: 10.1016/j.jcis.2013.09.052] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 09/25/2013] [Accepted: 09/27/2013] [Indexed: 11/28/2022]
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25
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Functionalization of nickel nanowires with a fluorophore aiming at new probes for multimodal bioanalysis. J Colloid Interface Sci 2013; 410:21-6. [DOI: 10.1016/j.jcis.2013.07.065] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 07/09/2013] [Accepted: 07/29/2013] [Indexed: 12/25/2022]
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26
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Singh J, Srivastava M, Roychoudhury A, Lee DW, Lee SH, Malhotra BD. Bienzyme-functionalized monodispersed biocompatible cuprous oxide/chitosan nanocomposite platform for biomedical application. J Phys Chem B 2013; 117:141-52. [PMID: 23270337 DOI: 10.1021/jp309639w] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ultrafine monodispersed cuprous oxide (Ufm-Cu(2)O) nanoparticles have been successfully synthesized by a facile wet chemical method using poly-N-vinylpyrrolidone (PVP) as a capping agent. This colloidal solution of Ufm-Cu(2)O and chitosan (CS) is electrophoretically deposited (EPD) onto the indium tin-oxide (ITO) glass substrate. Thus synthesized nanocomposite has been characterized by X-ray powder diffraction (XRD, ∼6 nm), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopic techniques. This novel biomedical nanocomposite platform has been explored to fabricate a cholesterol biosensor by immobilizing cholesterol esterase (ChEt) and cholesterol oxidase (ChOx) onto Ufm-Cu(2)O-CS/ITO electrode surface. The seed germination tests of these biomaterials (Ufm-Cu(2)O-CS nanocomposite and ChOx-ChEtUfm-CuO(2)-CS nanobiocomposite), conducted using the disc diffusion method, reveal strong activity against the common pathogens and crops, indicating biocompatibility of the nanocomposite. Under optimized conditions, the linearity between the current response and the cholesterol concentration has been obtained in the range of 10-450 mg/dL, with detection limit of 15.9 mg/dL cm(-2) and a high sensitivity of 0.895 μA/(mg/dL cm(-2)). The proposed biocompatible ChEt-ChOx/Ufm-Cu(2)O-CS/ITO bioelectrode shows fast response time (<5 s), good reproducibility, and long-term stability. This biocompatible biosensor has been used to determine the total cholesterol levels in human serum samples. Investigated antimicrobial activities of bienzyme-functionalized Ufm-Cu(2)O-CS nanocomposite are the potential platform for biomedical applications.
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Affiliation(s)
- Jay Singh
- Department of BIN Fusion Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea
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The Surface of Nanoparticle Silicon as Studied by Solid-State NMR. MATERIALS 2012; 6:18-46. [PMID: 28809292 PMCID: PMC5452113 DOI: 10.3390/ma6010018] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 11/20/2012] [Accepted: 12/03/2012] [Indexed: 11/16/2022]
Abstract
The surface structure and adjacent interior of commercially available silicon nanopowder (np-Si) was studied using multinuclear, solid-state NMR spectroscopy. The results are consistent with an overall picture in which the bulk of the np-Si interior consists of highly ordered (“crystalline”) silicon atoms, each bound tetrahedrally to four other silicon atoms. From a combination of 1H, 29Si and 2H magic-angle-spinning (MAS) NMR results and quantum mechanical 29Si chemical shift calculations, silicon atoms on the surface of “as-received” np-Si were found to exist in a variety of chemical structures, with apparent populations in the order (a) (Si–O–)3Si–H > (b) (Si–O–)3SiOH > (c) (HO–)nSi(Si)m(–OSi)4−m−n ≈ (d) (Si–O–)2Si(H)OH > (e) (Si–O–)2Si(–OH)2 > (f) (Si–O–)4Si, where Si stands for a surface silicon atom and Si represents another silicon atom that is attached to Si by either a Si–Si bond or a Si–O–Si linkage. The relative populations of each of these structures can be modified by chemical treatment, including with O2 gas at elevated temperature. A deliberately oxidized sample displays an increased population of (Si–O–)3Si–H, as well as (Si–O–)3SiOH sites. Considerable heterogeneity of some surface structures was observed. A combination of 1H and 2H MAS experiments provide evidence for a substantial population of silanol (Si–OH) moieties, some of which are not readily H-exchangeable, along with the dominant Si–H sites, on the surface of “as-received” np-Si; the silanol moieties are enhanced by deliberate oxidation. An extension of the DEPTH background suppression method is also demonstrated that permits measurement of the T2 relaxation parameter simultaneously with background suppression.
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Ibupoto ZH, Shah SMUA, Khun K, Willander M. Electrochemical L-lactic acid sensor based on immobilized ZnO nanorods with lactate oxidase. SENSORS 2012; 12:2456-66. [PMID: 22736960 PMCID: PMC3376621 DOI: 10.3390/s120302456] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 01/29/2012] [Accepted: 02/21/2012] [Indexed: 11/16/2022]
Abstract
In this work, fabrication of gold coated glass substrate, growth of ZnO nanorods and potentiometric response of lactic acid are explained. The biosensor was developed by immobilizing the lactate oxidase on the ZnO nanorods in combination with glutaraldehyde as a cross linker for lactate oxidase enzyme. The potentiometric technique was applied for the measuring the output (EMF) response of l-lactic acid biosensor. We noticed that the present biosensor has wide linear detection range of concentration from 1 × 10−4–1 × 100 mM with acceptable sensitivity about 41.33 ± 1.58 mV/decade. In addition, the proposed biosensor showed fast response time less than 10 s, a good selectivity towards l-lactic acid in presence of common interfering substances such as ascorbic acid, urea, glucose, galactose, magnesium ions and calcium ions. The present biosensor based on immobilized ZnO nanorods with lactate oxidase sustained its stability for more than three weeks.
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Affiliation(s)
- Zafar Hussain Ibupoto
- Department of Science and Technology, Campus Norrköping, Linköping University, Norrköping, Sweden.
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Kurkina T, Balasubramanian K. Towards in vitro molecular diagnostics using nanostructures. Cell Mol Life Sci 2012; 69:373-88. [PMID: 22009454 PMCID: PMC11115035 DOI: 10.1007/s00018-011-0855-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 09/29/2011] [Accepted: 09/29/2011] [Indexed: 10/16/2022]
Abstract
Nanostructures appear to be promising for a number of applications in molecular diagnostics, mainly due to the increased surface-to-volume ratio they can offer, the very low limit of detection achievable, and the possibility to fabricate point-of-care diagnostic devices. In this paper, we review examples of the use of nanostructures as diagnostic tools that bring in marked improvements over prevalent classical assays. The focus is laid on the various sensing paradigms that possess the potential or have demonstrated the capability to replace or augment current analytical strategies. We start with a brief introduction of the various types of nanostructures and their physical properties that determine the transduction principle. This is followed by a concise collection of various functionalization protocols used to immobilize biomolecules on the nanostructure surface. The sensing paradigms are discussed in two contexts: the nanostructure acting as a label for detection, or the nanostructure acting as a support upon which the molecular recognition events take place. In order to be successful in the field of molecular diagnostics, it is important that the nanoanalytical tools be evaluated in the appropriate biological environment. The final section of the review compiles such examples, where the nanostructure-based diagnostic tools have been tested on realistic samples such as serum, demonstrating their analytical power even in the presence of complex matrix effects. The ability of nanodiagnostic tools to detect ultralow concentrations of one or more analytes coupled with portability and the use of low sample volumes is expected to have a broad impact in the field of molecular diagnostics.
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Affiliation(s)
- Tetiana Kurkina
- Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
| | - Kannan Balasubramanian
- Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
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31
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Nanomaterials for Sensing Applications: Introduction and Perspective. SPRINGER SERIES ON CHEMICAL SENSORS AND BIOSENSORS 2012. [DOI: 10.1007/5346_2012_41] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Khan MJ, Qayyum S, Alam F, Husain Q. Effect of tin oxide nanoparticle binding on the structure and activity of α-amylase from Bacillus amyloliquefaciens. NANOTECHNOLOGY 2011; 22:455708. [PMID: 22020314 DOI: 10.1088/0957-4484/22/45/455708] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Proteins adsorbed on nanoparticles (NPs) are being used in biotechnology, biosensors and drug delivery. However, understanding the effect of NPs on the structure of proteins is still in a nascent state. In the present paper tin oxide (SnO2) NPs were synthesized by the reaction of SnCl4·5H2O in methanol via the sol-gel method and characterized by x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). The binding of these SnO2-NPs with α-amylase was investigated by using UV-vis, fluorescence and circular dichroism (CD) spectroscopic techniques. A strong quenching of tryptophan fluorescence intensity in α-amylase was observed due to formation of a ground state complex with SnO2-NPs. Far-UV CD spectra showed that the secondary structure of α-amylase was changed in the presence of NPs. The Michaelis-Menten constant (K(m)), was found to be 26.96 and 28.45 mg ml(-1), while V(max) was 4.173 and 3.116 mg ml(-1) min(-1) for free and NP-bound enzyme, respectively.
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Affiliation(s)
- Mohammad Jahir Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh-202002, India
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Wu J, Chopra N. Graphene Encapsulated Gold Nanoparticles and Their Characterization. CERAMIC TRANSACTIONS SERIES 2010. [DOI: 10.1002/9780470931011.ch1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Challenges in the use of 1D nanostructures for on-chip biosensing and diagnostics: A review. Biosens Bioelectron 2010; 26:1195-204. [DOI: 10.1016/j.bios.2010.07.041] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 07/10/2010] [Accepted: 07/12/2010] [Indexed: 12/27/2022]
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Cash KJ, Clark HA. Nanosensors and nanomaterials for monitoring glucose in diabetes. Trends Mol Med 2010; 16:584-93. [PMID: 20869318 DOI: 10.1016/j.molmed.2010.08.002] [Citation(s) in RCA: 146] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 08/12/2010] [Accepted: 08/13/2010] [Indexed: 11/15/2022]
Abstract
Worldwide, diabetes is a rapidly growing problem that is managed at the individual level by monitoring and controlling blood glucose levels to minimize the negative effects of the disease. Because of limitations in diagnostic methods, significant research efforts are focused on developing improved methods to measure glucose. Nanotechnology has impacted these efforts by increasing the surface area of sensors, improving the catalytic properties of electrodes and providing nanoscale sensors. Here, we discuss developments in the past several years on both nanosensors that directly measure glucose and nanomaterials that improve glucose sensor function. Finally, we discuss challenges that must be overcome to apply these developments in the clinic.
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Affiliation(s)
- Kevin J Cash
- Department of Pharmaceutical Sciences, Northeastern University, 110 Mugar Life Sciences Building, 360 Huntington Avenue, Boston, MA 02115, USA
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Ramgir NS, Yang Y, Zacharias M. Nanowire-based sensors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:1705-1722. [PMID: 20712030 DOI: 10.1002/smll.201000972] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nanowires are important potential candidates for the realization of the next generation of sensors. They offer many advantages such as high surface-to-volume ratios, Debye lengths comparable to the target molecule, minimum power consumption, and they can be relatively easily incorporated into microelectronic devices. Accordingly, there has been an intensified search for novel nanowire materials and corresponding platforms for realizing single-molecule detection with superior sensing performance. In this work, progress made towards the use of nanowires for achieving better sensing performance is critically reviewed. In particular, various nanowires types (metallic, semiconducting, and insulating) and their employment either as a sensor material or as a template material are discussed. Major obstacles and future steps towards the ultimate nanosensors based on nanowires are addressed.
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Affiliation(s)
- Niranjan S Ramgir
- Nanotechnology Institute of Microsystems Engineering (IMTEK) Georges-Köhler-Allee 103 Freiburg, D 79110, Germany
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Cruz JC, Pfromm PH, Tomich JM, Rezac ME. Conformational changes and catalytic competency of hydrolases adsorbing on fumed silica nanoparticles: I. Tertiary structure. Colloids Surf B Biointerfaces 2010; 79:97-104. [DOI: 10.1016/j.colsurfb.2010.03.036] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 03/23/2010] [Accepted: 03/25/2010] [Indexed: 11/25/2022]
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Ansari AA, Alhoshan M, Alsalhi MS, Aldwayyan AS. Prospects of nanotechnology in clinical immunodiagnostics. SENSORS 2010; 10:6535-81. [PMID: 22163566 PMCID: PMC3231125 DOI: 10.3390/s100706535] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2010] [Revised: 06/12/2010] [Accepted: 06/30/2010] [Indexed: 01/08/2023]
Abstract
Nanostructured materials are promising compounds that offer new opportunities as sensing platforms for the detection of biomolecules. Having micrometer-scale length and nanometer-scale diameters, nanomaterials can be manipulated with current nanofabrication methods, as well as self-assembly techniques, to fabricate nanoscale bio-sensing devices. Nanostructured materials possess extraordinary physical, mechanical, electrical, thermal and multifunctional properties. Such unique properties advocate their use as biomimetic membranes to immobilize and modify biomolecules on the surface of nanoparticles. Alignment, uniform dispersion, selective growth and diameter control are general parameters which play critical roles in the successful integration of nanostructures for the fabrication of bioelectronic sensing devices. In this review, we focus on different types and aspects of nanomaterials, including their synthesis, properties, conjugation with biomolecules and their application in the construction of immunosensing devices. Some key results from each cited article are summarized by relating the concept and mechanism behind each sensor, experimental conditions and the behavior of the sensor under different conditions, etc. The variety of nanomaterial-based bioelectronic devices exhibiting novel functions proves the unique properties of nanomaterials in such sensing devices, which will surely continue to expand in the future. Such nanomaterial based devices are expected to have a major impact in clinical immunodiagnostics, environmental monitoring, security surveillance and for ensuring food safety.
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Affiliation(s)
- Anees A. Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +966-1-4676838; Fax: +966-1-0545797441
| | - Mansour Alhoshan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh-11451, P.O. Box-2454, Saudi Arabia, E-Mail:
| | - Mohamad S. Alsalhi
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia
| | - Abdullah S. Aldwayyan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia
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Tyagi P, Postetter D, Saragnese DL, Randall CL, Mirski MA, Gracias DH. Patternable nanowire sensors for electrochemical recording of dopamine. Anal Chem 2010; 81:9979-84. [PMID: 19904993 DOI: 10.1021/ac901744s] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spatially resolved electrochemical recording of neurochemicals is difficult due to the challenges associated with producing nanometer-scale patternable and integrated sensors. We describe the lithographic fabrication and characterization of patternable gold (Au) nanowire (NW) based sensors for the electrochemical recording of dopamine (DA). We demonstrate a straightforward NW-size-independent approach to align contact pads to NWs. Sensors, with NW widths as small as 30 nm, exhibited considerable insensitivity to scan rates during cyclic voltammetry, a nonlinear increase in oxidation current with increasing NW width, and the selectivity to measure submaximal synaptic concentrations of DA in the presence of interfering ascorbic acid. The electrochemical sensitivity of Au NW electrode sensors was much larger than that of Au thin-film electrodes. In chronoamperometric measurements, the NW sensors were found to be sensitive for submicromolar concentration of DA. Hence, the patternable NW sensors represent an attractive platform for electrochemical sensing and recording.
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Affiliation(s)
- P Tyagi
- Department of Chemical and Biomolecular Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
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Abu-Salah KM, Alrokyan SA, Khan MN, Ansari AA. Nanomaterials as analytical tools for genosensors. SENSORS (BASEL, SWITZERLAND) 2010; 10:963-93. [PMID: 22315580 PMCID: PMC3270881 DOI: 10.3390/s100100963] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2009] [Revised: 01/08/2010] [Accepted: 01/11/2010] [Indexed: 12/27/2022]
Abstract
Nanomaterials are being increasingly used for the development of electrochemical DNA biosensors, due to the unique electrocatalytic properties found in nanoscale materials. They offer excellent prospects for interfacing biological recognition events with electronic signal transduction and for designing a new generation of bioelectronic devices exhibiting novel functions. In particular, nanomaterials such as noble metal nanoparticles (Au, Pt), carbon nanotubes (CNTs), magnetic nanoparticles, quantum dots and metal oxide nanoparticles have been actively investigated for their applications in DNA biosensors, which have become a new interdisciplinary frontier between biological detection and material science. In this article, we address some of the main advances in this field over the past few years, discussing the issues and challenges with the aim of stimulating a broader interest in developing nanomaterial-based biosensors and improving their applications in disease diagnosis and food safety examination.
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Affiliation(s)
- Khalid M. Abu-Salah
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O Box-2454, Saudi Arabia; E-Mails: (K.M.A.-S.); (S.A.A.); (M.N.K.)
| | - Salman A. Alrokyan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O Box-2454, Saudi Arabia; E-Mails: (K.M.A.-S.); (S.A.A.); (M.N.K.)
| | - Muhammad Naziruddin Khan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O Box-2454, Saudi Arabia; E-Mails: (K.M.A.-S.); (S.A.A.); (M.N.K.)
| | - Anees Ahmad Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O Box-2454, Saudi Arabia; E-Mails: (K.M.A.-S.); (S.A.A.); (M.N.K.)
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Tiano AL, Koenigsmann C, Santulli AC, Wong SS. Solution-based synthetic strategies for one-dimensional metal-containing nanostructures. Chem Commun (Camb) 2010; 46:8093-130. [DOI: 10.1039/c0cc01735c] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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42
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WANG X, YAO S, LI X. Sol-gel Preparation of CNT/ZnO Nanocomposite and Its Photocatalytic Property. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990220] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mauter MS, Elimelech M. Environmental applications of carbon-based nanomaterials. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2008; 42:5843-59. [PMID: 18767635 DOI: 10.1021/es8006904] [Citation(s) in RCA: 656] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The unique and tunable properties of carbon-based nanomaterials enable new technologies for identifying and addressing environmental challenges. This review critically assesses the contributions of carbon-based nanomaterials to a broad range of environmental applications: sorbents, high-flux membranes, depth filters, antimicrobial agents, environmental sensors, renewable energy technologies, and pollution prevention strategies. In linking technological advance back to the physical, chemical, and electronic properties of carbonaceous nanomaterials, this article also outlines future opportunities for nanomaterial application in environmental systems.
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Affiliation(s)
- Meagan S Mauter
- Department of Chemical Engineering, Environmental Engineering Program, Yale University, P.O. Box 208286, New Haven, Connecticut 06520-8286, USA
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