Assembly of Carbon Nanotube Sheets

Zhang, Mei; Baughman, Ray H.

doi:10.5772/17352

Cited by 4 publications

(3 citation statements)

References 60 publications

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“…To develop the electrodes, vertically aligned multiwalled carbon nanotube arrays (CNT forests) synthesized using catalytic chemical vapor deposition were exploited. [ 34–36 ] Subsequently, free‐standing pure CNT sheets were obtained by teasing CNT bundles from the forest sidewall which is then continuously drawn out into a sheet (Figure 1c). In this process, the CNTs transition from a vertically oriented forest to a horizontally aligned state where mechanical coupling of adjacent bundles leads to interconnections at the top and bottom of the sidewall, fostering continuity of CNT in the sheet.…”

Section: Resultsmentioning

confidence: 99%

“…In this process, the CNTs transition from a vertically oriented forest to a horizontally aligned state where mechanical coupling of adjacent bundles leads to interconnections at the top and bottom of the sidewall, fostering continuity of CNT in the sheet. [ 36–38 ] The SEM image of the CNT forest during air drawing process clearly shows the unidirectional alignment of CNT sheet, and the inter‐fibrils between each set of parallel lines is also visible (Figure S2, Supporting Information). The electrical anisotropy of the CNT sheet is significantly influenced by its anisotropic structure, [ 34 ] which consists of main nanotubes aligned along the longitudinal direction and laterally branched inter‐fibrils.…”

Section: Resultsmentioning

confidence: 99%

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Structurally Aligned Multifunctional Neural Probe (SAMP) Using Forest‐Drawn CNT Sheet onto Thermally Drawn Polymer Fiber for Long‐Term In Vivo Operation

Jeon,

Lee,

Kim

et al. 2024

Advanced Materials

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Neural probe engineering is a dynamic field, driving innovation in neuroscience and addressing scientific and medical demands. Recent advancements involve integrating nanomaterials to improve performance, aiming for sustained in vivo functionality. However, challenges persist due to size, stiffness, complexity, and manufacturing intricacies. To address these issues, we propose a neural interface utilizing freestanding CNT‐sheets drawn from CNT‐forests integrated onto thermally drawn functional polymer fibers. This approach yields a device with structural alignment, resulting in exceptional electrical, mechanical, and electrochemical properties while retaining biocompatibility for prolonged periods of implantation. This Structurally Aligned Multifunctional neural Probe (SAMP) employing forest‐drawn CNT sheets demonstrates in vivo capabilities in neural recording, neurotransmitter detection, and brain/spinal cord circuit manipulation via optogenetics, maintaining functionality for over a year post‐implantation. The straightforward fabrication method's versatility, coupled with the device's functional reliability, underscores the significance of this technique in the next‐generation carbon‐based implants. Moreover, the device's longevity and multifunctionality positions it as a promising platform for long‐term neuroscience research.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Structurally Aligned Multifunctional Neural Probe (SAMP) Using Forest‐Drawn CNT Sheet onto Thermally Drawn Polymer Fiber for Long‐Term In Vivo Operation

Jeon,

Lee,

Kim

et al. 2024

Advanced Materials

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“…6(c)]. 16) The period of this undulation decreased with decreasing CNT array growth rate due to the degradation of catalyst activity. Finally, when most of the catalyst particles lost their activity, the CNT array growth ceased, although some CNTs still continued their growth, which appeared tangled near the substrate, as shown in Fig.…”

Section: Effect Of Gas Pressurementioning

confidence: 99%

Study of Growth Enhancement of Multiwalled Carbon Nanotubes by Chlorine-Assisted Chemical Vapor Deposition

Ghemes

Okada

et al. 2013

Jpn. J. Appl. Phys.

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In this paper, we investigate the effect of chlorine as a growth promoter in the synthesis of multiwalled carbon nanotubes (MWCNTs). We find that the addition of chlorine gas to the chemical vapor deposition process reduces the amount of amorphous carbon deposited on the MWCNT surfaces and results in a longer catalyst lifetime. By using optimum growth parameters, the catalyst remains active for 75 min. Moreover, the growth rate is also relatively high resulting in the maximum CNT array height of 3.5 mm. The MWCNT arrays grown with and without chlorine are compared.

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In situ non-catalyst synthesis of multiwall carbon nanotubes and nanofibers on commercial stainless steel cylinder

2018

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Assembly of Carbon Nanotube Sheets

Cited by 4 publications

References 60 publications

Structurally Aligned Multifunctional Neural Probe (SAMP) Using Forest‐Drawn CNT Sheet onto Thermally Drawn Polymer Fiber for Long‐Term In Vivo Operation

Structurally Aligned Multifunctional Neural Probe (SAMP) Using Forest‐Drawn CNT Sheet onto Thermally Drawn Polymer Fiber for Long‐Term In Vivo Operation

Study of Growth Enhancement of Multiwalled Carbon Nanotubes by Chlorine-Assisted Chemical Vapor Deposition

In situ non-catalyst synthesis of multiwall carbon nanotubes and nanofibers on commercial stainless steel cylinder

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