Fabrication of single-walled carbon nanotube three-dimensional networks inside the pores of a porous silicon structure

Lee, Tae Jae; Seo, Jung-Eun; Lee, Haiwon; Lee, Jung Woo; Yi, Whikun

doi:10.1016/j.carbon.2009.12.042

Cited by 16 publications

(9 citation statements)

References 31 publications

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“…2(d) shows the Raman spectra of SWNT film and 3D SWNT networks suspended on ZnO nanorods. Clear radial breathing modes (RBMs) around 250 cm −1 and a weak D-band at 1330 cm −1 , and a sharp G-band at 1523-1542 cm −1 imply that the SWNTs obtained are similar to our previous results, i.e., 3D SWNT networks formed inside the pores of porous silicon [15].…”

Section: Resultssupporting

confidence: 85%

Sensitive and Stable Gas Ionization Sensor Based on 3-D Single-Walled Carbon Nanotube Networks Suspended on ZnO Nanorods

et al. 2015

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We fabricated a gas ionization sensor based on 3-D single-walled carbon nanotube (SWNT) networks suspended between ZnO nanorods using a chemical vapor deposition method. ZnO nanorods were grown on the pyramid-like protrusions of a textured Si substrate. The breakdown voltages and stability of the 3-D SWNT networks were measured and compared with those of a SWNT film synthesized on Si substrate. Our results show that 3-D SWNT networks on ZnO nanorods enable ionization gas sensors to be sensitive, selective, and highly stable devices.Index Terms-Breakdown voltage, gas ionization sensor, ZnO nanorod, 3D SWNT network.

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Section: Resultssupporting

confidence: 85%

Sensitive and Stable Gas Ionization Sensor Based on 3-D Single-Walled Carbon Nanotube Networks Suspended on ZnO Nanorods

et al. 2015

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“…SWCNTs inside the pores were not only synthesized along the inner wall surfaces of the pores, but also possessed various shapes and directions resulting in the 3D SWCNT network shown in Figure 3(b). In our previous work, 10 Raman spectra were recorded to confirm SWCNTs, showing clear radial breathing modes at 100-300 cm −1 , a weak D-band at 1330 cm −1 , and a sharp G-band at 1588-1592 cm −1 . Figure 4(a) shows the current density-electric field curves (J -E) in FE from pristine PS, synthesized SWCNT film on Si, sprayed SWCNT film on PS, and 3D SWCNTs inside PS.…”

Section: Methodsmentioning

confidence: 98%

Field Emission Properties of a Three-Dimensional Network of Single-Walled Carbon Nanotubes Inside Pores of Porous Silicon

Lee¹,

Park²,

Lee³

et al. 2014

j nanosci nanotechnol

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We report characteristic field emission (FE) properties of single-walled carbon nanotubes (SWCNTs) synthesized inside the pores as well as on the top surface of a porous silicon (PS) substrate. Turn-on fields and emission current densities were measured and compared with those of other types of SWCNTs in similar environments. Investigation of the FE properties of SWCNTs synthesized inside the pores of a PS substrate revealed a low turn-on field of approximately 2.25 V/μm at 10 μA/cm2 and a high field-enhancement factor (6182) compared with other samples. A life-time stability test was performed by monitoring the current density before and after repeated exposure to O2, suggesting that the pore channel can effectively prevent O2(+) ion etching from destroying SWCNTs within the pores of the PS layer.

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“…The diameter and the length of the horizontal quartz reactor are 40 and 800 mm, respectively. The detail process of CNT synthesis is described elsewhere …”

Section: Methodsmentioning

confidence: 99%

Bio‐inspired Hierarchical Nanowebs for Green Catalysis

Lee

Chang

et al. 2015

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Bio-inspired 3D hierarchical nanowebs are fabricated using silicon micropillars, carbon nanotubes (CNT), and manganese oxide. The Si pillars act as artificial branches for growing CNTs and the secondary metal coating strengthens the structures. The simple but effective structure provides both chemical and mechanical stability to be used as a green catalyst for recycling waste polymers into raw materials.

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Fabrication of single-walled carbon nanotube three-dimensional networks inside the pores of a porous silicon structure

Cited by 16 publications

References 31 publications

Sensitive and Stable Gas Ionization Sensor Based on 3-D Single-Walled Carbon Nanotube Networks Suspended on ZnO Nanorods

Sensitive and Stable Gas Ionization Sensor Based on 3-D Single-Walled Carbon Nanotube Networks Suspended on ZnO Nanorods

Field Emission Properties of a Three-Dimensional Network of Single-Walled Carbon Nanotubes Inside Pores of Porous Silicon

Bio‐inspired Hierarchical Nanowebs for Green Catalysis

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