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Freitas JR, Pimenta S, Santos DJ, Esteves B, Gomes NM, Correia JH. Flexible Neural Probe Fabrication Enhanced with a Low-Temperature Cured Polyimide and Platinum Electrodeposition. SENSORS (BASEL, SWITZERLAND) 2022; 22:9674. [PMID: 36560042 PMCID: PMC9783888 DOI: 10.3390/s22249674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Polyimide is an emerging and very interesting material for substrate and passivation of neural probes. However, the standard curing temperature of polyimide (350 °C) is critical for the microelectrodes and contact pads of the neural probe, due to the thermal oxidation of the metals during the passivation process of the neural probe. Here, the fabrication process of a flexible neural probe, enhanced with a photosensitive and low-temperature cured polyimide, is presented. Annealing tests were performed with metallic films deposited on polyimide, which led to the reduction of the curing temperature to 250 °C, with no significant irregularities in the metallic sample annealed at that temperature and an effective polyimide curing. The use of a lower curing temperature reduces the thermal oxidation of the metals during the polyimide curing process to passivate the neural probe. Additionally, in this fabrication process, the microelectrodes of the neural probe were coated with electrodeposited platinum (Pt), only after the passivation process, and its electrochemical performance was accessed. At 1 kHz, the impedance of the microelectrodes before Pt electrodeposition was approximately 1.2 MΩ, and after Pt electrodeposition, it was approximately 350 kΩ. Pt electrodeposition changed the equivalent circuit of the microelectrodes and reduced their impedance, which will be crucial for future in-vivo tests to acquire the electrical activity of the neurons with the fabricated neural probe.
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Affiliation(s)
- João R. Freitas
- CMEMS—UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Sara Pimenta
- CMEMS—UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Diogo J. Santos
- CMEMS—UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Bruno Esteves
- CMEMS—UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno M. Gomes
- CMEMS—UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - José H. Correia
- CMEMS—UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
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Teymouri F, Samiei I, Allahkaram SR, Azamian I, Johari M, Shekarchi M. Passive film alteration of reinforcing steel through [MoO42−]/[RCOO−] interfacial co-interaction for enhanced corrosion resistance in chloride contaminated concrete pore solution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119060] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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3
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Xu J, Peng S, Li Z, Jiang S, Xie ZH, Munroe P. The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating. ULTRASONICS SONOCHEMISTRY 2021; 71:105406. [PMID: 33310652 PMCID: PMC7786559 DOI: 10.1016/j.ultsonch.2020.105406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/20/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
To alleviate the cavitation damage of metallic engineering components in hydrodynamic systems operating in marine environments, a NbN nanoceramic coating was synthesized on to a Ti-6Al-4V substrate via a double cathode glow discharge technique. The microstructure of the coating consisted of a ~13 μm thick deposition layer of a hexagonal δ'-NbN phase and a diffusion layer ~2 μm in thickness composed of face-centered cubic (fcc) B1-NaCl-structured (Ti,Nb)N. The NbN coating not only exhibited higher values of H/E and H2/E than those measured from NbN coatings deposited by other techniques, but also possessed good adhesion to the substrate. The cavitation erosion resistance of the NbN coating in a 3.5 wt% NaCl solution was investigated using an ultrasonic cavitation-induced apparatus combined with a range of electrochemical test methods. Potentiodynamic polarization measurements demonstrated that the NbN coated specimens demonstrated both a higher corrosion potential (Ecorr) and lower corrosion current density (icorr) than the uncoated substrate. Mott-Schottky analysis, combined with the point defect model (PDM), revealed that, for a given cavitation time, the donor density (ND) of the passive film on the NbN coating was reduced by 1 ~ 2 orders of magnitude relative to the uncoated Ti-6Al-4V, and the diffusivity of the point defects (D0) in the passive film grown on the NbN coating was nearly one order of magnitude lower than that on the uncoated substrate. In order to better understand the experimental observations obtained from Mott-Schottky analysis and double-charge layer capacitance measurements, first-principles density-functional theory was employed to calculate the energy of vacancy formation and the adsorption energy for chloride ions for the passive films present on both the NbN coating and bare Ti-6Al-4V.
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Affiliation(s)
- Jiang Xu
- Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, PR China.
| | - Shuang Peng
- Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, PR China
| | - Zhengyang Li
- Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shuyun Jiang
- Department of Mechanical Engineering, Southeast University, 2 Si Pai Lou, Nanjing 210096, PR China
| | - Zong-Han Xie
- School of Mechanical Engineering, University of Adelaide, SA 5005, Australia
| | - Paul Munroe
- School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia
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4
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Alternating current oxidation of Ti–6Al–4V alloy in oxalic acid for corrosion resistant surface finishing. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2905-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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5
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Kaiser F, Scharnweber D, Bierbaum S, Wolf-Brandstetter C. Success and side effects of different treatment options in the low current attack of bacterial biofilms on titanium implants. Bioelectrochemistry 2020; 133:107485. [DOI: 10.1016/j.bioelechem.2020.107485] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 12/15/2022]
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6
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Tsuchiya H, Schmuki P. Less known facts and findings about TiO 2 nanotubes. NANOSCALE 2020; 12:8119-8132. [PMID: 32236272 DOI: 10.1039/d0nr00367k] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Anodic TiO2 nanotubes that are grown on Ti substrates by a simple anodization in various types of fluoride containing electrolytes have attracted scientific and technological interest due to their wide potential applications, and therefore, numerous research efforts have been dedicated to these self-ordered oxide structures in the past decade. The present mini-review highlights less known but important aspects, such as the formation of spaced nanotubes with adjustable interspacing that is achieved in a few specific organic electrolytes, and strong effects of the metallic Ti substrate which significantly affect the growth of the tubes. We discuss the formation of oxide nanotubes grown from adequately alloyed substrates and noble metal nanoparticle decoration of tubes. We describe how specific heat-treatment can introduce a nanotwinned boundary in the oxide tube walls of single-walled nanotubes obtained by a decoring process. All the facts and findings were studied in recent years and TiO2 nanotubes can be upgraded with more optimized functionalities for their applications.
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Affiliation(s)
- Hiroaki Tsuchiya
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Heubner C, Langklotz U, Lämmel C, Schneider M, Michaelis A. Electrochemical single-particle measurements of electrode materials for Li-ion batteries: Possibilities, insights and implications for future development. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135160] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Ohtsuka T, Nishikata A, Sakairi M, Fushimi K. Micro-electrochemical Approach for Corrosion Study. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/978-981-10-6820-1_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Lämmel C, Heubner C, Liebmann T, Schneider M. Critical Impact of Chloride Containing Reference Electrodes on Electrochemical Measurements. ELECTROANAL 2017. [DOI: 10.1002/elan.201700379] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- C. Lämmel
- Fraunhofer IKTS; Winterbergstraße 28 01277 Dresden Germany
| | - C. Heubner
- Institute of Materials Science; TU Dresden; 01062 Dresden Germany
| | - T. Liebmann
- Fraunhofer IKTS; Winterbergstraße 28 01277 Dresden Germany
| | - M. Schneider
- Fraunhofer IKTS; Winterbergstraße 28 01277 Dresden Germany
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Maltanava H, Poznyak S, Starykevich M, Ivanovskaya M. Electrocatalytic activity of Au nanoparticles onto TiO2 nanotubular layers in oxygen electroreduction reaction: size and support effects. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Nanocrystalline β-Ta Coating Enhances the Longevity and Bioactivity of Medical Titanium Alloys. METALS 2016. [DOI: 10.3390/met6090221] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Jinlong L, Tongxiang L, Chen W, Limin D. Surface corrosion enhancement of passive films on NiTi shape memory alloy in different solutions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:192-7. [PMID: 27040211 DOI: 10.1016/j.msec.2016.02.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/29/2016] [Accepted: 02/22/2016] [Indexed: 11/29/2022]
Abstract
The corrosion behaviors of NiTi shape memory alloy in NaCl solution, H2SO4 solution and borate buffer solution were investigated. It was found that TiO2 in passive film improved the corrosion resistance of NiTi shape memory. However, low corrosion resistance of passive film was observed in low pH value acidic solution due to TiO2 dissolution. Moreover, the corrosion resistance of NiTi shape memory alloy decreased with the increasing of passivated potential in the three solutions. The donor density in passive film increased with the increasing of passivated potential. Different solutions affect the semiconductor characteristics of the passive film. The reducing in the corrosion resistance was attributed to the more donor concentrations in passive film and thinner thickness of the passive film.
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Affiliation(s)
- Lv Jinlong
- Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.
| | - Liang Tongxiang
- Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.
| | - Wang Chen
- Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China
| | - Dong Limin
- Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China
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13
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Liu LL, Xu J, Lu X, Munroe P, Xie ZH. Electrochemical Corrosion Behavior of Nanocrystalline β-Ta Coating for Biomedical Applications. ACS Biomater Sci Eng 2016; 2:579-594. [DOI: 10.1021/acsbiomaterials.5b00552] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin lin Liu
- Department
of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, P. R. China
| | - Jiang Xu
- Department
of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, P. R. China
| | - Xiaolin Lu
- Department
of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, P. R. China
| | - Paul Munroe
- School
of Materials Science and Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Zong-Han Xie
- School of Mechanical & Electrical Engineering, Wuhan Institute of Technology,693 Xiongchu Avenue, Wuhan 430073, P. R. China
- School
of Mechanical Engineering, University of Adelaide, Adelaide, South Australia 5005, Australia
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14
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Characterization of anodic oxide film growth on Ti6Al4V in NaTESi electrolyte with associated adhesive bonding behaviour. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.089] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Filippin F, Linarez Pérez O, Teijelo ML, Bonetto R, Trincavelli J, Avalle L. Thickness determination of electrochemical titanium oxide (Ti/TiO2) formed in HClO4 solutions. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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17
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Schneider M, Langklotz U, Michaelis A. Spectroscopic reflectometry as in-operando
method for thickness determination of anodic oxide films on titanium. SURF INTERFACE ANAL 2013. [DOI: 10.1002/sia.5262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. Schneider
- Fraunhofer IKTS; Winterbergstr. 28 01277 Dresden FRG
| | - U. Langklotz
- TU Dresden, Inst. of Material Science; Helmholtzstr.7 01067 Dresden FRG
| | - A. Michaelis
- Fraunhofer IKTS; Winterbergstr. 28 01277 Dresden FRG
- TU Dresden, Inst. of Material Science; Helmholtzstr.7 01067 Dresden FRG
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18
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Woldemedhin MT, Raabe D, Hassel AW. Characterization of thin anodic oxides of Ti–Nb alloys by electrochemical impedance spectroscopy. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.06.029] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Impedance behaviour of anodic TiO2 films prepared by galvanostatic anodisation and powerful pulsed discharge in electrolyte. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.05.064] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Maachi B, Hakiki NE. Influence of deep energetic levels on charge densities and capacitance of semiconductor/electrolyte interface. RUSS J ELECTROCHEM+ 2011. [DOI: 10.1134/s102319351108009x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Schneider M, Langklotz U, Michaelis A. Thickness determination of thin anodic titanium oxide films-a comparison between coulometry and reflectometry. SURF INTERFACE ANAL 2011. [DOI: 10.1002/sia.3736] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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La Mantia F, Habazaki H, Santamaria M, Di Quarto F. A critical assessment of the Mott-Schottky analysis for the characterisation of passive film-electrolyte junctions. RUSS J ELECTROCHEM+ 2010. [DOI: 10.1134/s102319351011011x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Schneider M, Langklotz U, Michaelis A, Arnold B. Microelectrochemical investigation on aluminium-steel friction welds. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3175] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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