Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording
Abstract Precise and long-term electroanalysis at the single-cell level is crucial for the accurate diagnosis and monitoring of brain diseases. The reliable protection in areas outside the signal acquisition points at sharp ultramicroelectrode (UME) tips has a significant impact on the sensitivity,...
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| Format: | Article |
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Nature Publishing Group
2025-01-01
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| Series: | Microsystems & Nanoengineering |
| Online Access: | https://doi.org/10.1038/s41378-024-00819-w |
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| author | Zhiyuan Du Qingda Xu Ye Xi Mengfei Xu Jiawei Cao Longchun Wang Xiuyan Li Xiaolin Wang Qingkun Liu Zude Lin Bin Yang Jingquan Liu |
| author_facet | Zhiyuan Du Qingda Xu Ye Xi Mengfei Xu Jiawei Cao Longchun Wang Xiuyan Li Xiaolin Wang Qingkun Liu Zude Lin Bin Yang Jingquan Liu |
| author_sort | Zhiyuan Du |
| collection | DOAJ |
| description | Abstract Precise and long-term electroanalysis at the single-cell level is crucial for the accurate diagnosis and monitoring of brain diseases. The reliable protection in areas outside the signal acquisition points at sharp ultramicroelectrode (UME) tips has a significant impact on the sensitivity, fidelity, and stability of intracellular neural signal recording. However, it is difficult for existing UMEs to achieve controllable exposure of the tip functional structure, which affects their ability to resist environmental interference and shield noise, resulting in unsatisfactory signal-to-noise ratio and signal fidelity of intracellular recordings. To address this issue, we chose a dense and electrochemically stable diamond-like carbon (DLC) film as the UME protection coating and developed a method to precisely control the exposed degree of the functional structure by directly fixed-point processing of the UME tip by the strong site-selectivity and good controllability of the atmospheric microplasma jet. By analyzing the interaction between the microplasma jet and the UME tip, as well as the changes in the removal length and microstructure of UME tips with processing time, the exposed tip length was precisely controlled down to the submicron scale. Biocompatibility experiments, electrochemical aging tests and real-time intracellular pH recording experiments have demonstrated that the DLC-UME with effective tip protection processed by microplasma jet has the potential to enable long-term detection of intracellular high-fidelity signals. |
| format | Article |
| id | doaj-art-b6cd2fbd50934c70af9cc5a1f1970f75 |
| institution | Kabale University |
| issn | 2055-7434 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Microsystems & Nanoengineering |
| spelling | doaj-art-b6cd2fbd50934c70af9cc5a1f1970f752025-01-26T12:38:21ZengNature Publishing GroupMicrosystems & Nanoengineering2055-74342025-01-0111111110.1038/s41378-024-00819-wControllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recordingZhiyuan Du0Qingda Xu1Ye Xi2Mengfei Xu3Jiawei Cao4Longchun Wang5Xiuyan Li6Xiaolin Wang7Qingkun Liu8Zude Lin9Bin Yang10Jingquan Liu11National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityNational Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong UniversityAbstract Precise and long-term electroanalysis at the single-cell level is crucial for the accurate diagnosis and monitoring of brain diseases. The reliable protection in areas outside the signal acquisition points at sharp ultramicroelectrode (UME) tips has a significant impact on the sensitivity, fidelity, and stability of intracellular neural signal recording. However, it is difficult for existing UMEs to achieve controllable exposure of the tip functional structure, which affects their ability to resist environmental interference and shield noise, resulting in unsatisfactory signal-to-noise ratio and signal fidelity of intracellular recordings. To address this issue, we chose a dense and electrochemically stable diamond-like carbon (DLC) film as the UME protection coating and developed a method to precisely control the exposed degree of the functional structure by directly fixed-point processing of the UME tip by the strong site-selectivity and good controllability of the atmospheric microplasma jet. By analyzing the interaction between the microplasma jet and the UME tip, as well as the changes in the removal length and microstructure of UME tips with processing time, the exposed tip length was precisely controlled down to the submicron scale. Biocompatibility experiments, electrochemical aging tests and real-time intracellular pH recording experiments have demonstrated that the DLC-UME with effective tip protection processed by microplasma jet has the potential to enable long-term detection of intracellular high-fidelity signals.https://doi.org/10.1038/s41378-024-00819-w |
| spellingShingle | Zhiyuan Du Qingda Xu Ye Xi Mengfei Xu Jiawei Cao Longchun Wang Xiuyan Li Xiaolin Wang Qingkun Liu Zude Lin Bin Yang Jingquan Liu Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording Microsystems & Nanoengineering |
| title | Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording |
| title_full | Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording |
| title_fullStr | Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording |
| title_full_unstemmed | Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording |
| title_short | Controllable tip exposure of ultramicroelectrodes coated by diamond-like carbon via direct microplasma jet for enhanced stability and fidelity in single-cell recording |
| title_sort | controllable tip exposure of ultramicroelectrodes coated by diamond like carbon via direct microplasma jet for enhanced stability and fidelity in single cell recording |
| url | https://doi.org/10.1038/s41378-024-00819-w |
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