scholarly journals Dip-Coating Self-Assembly Fabrication and Polarization Sensitive Photoresponse of Aligned Single-Walled Carbon Nanotube Film

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 490
Author(s):  
Jiazhen Zhang ◽  
Luhan Yang ◽  
Huang Xu ◽  
Jie Zhou ◽  
Yuxiang Sang ◽  
...  

It is challenging to obtain wafer-scaled aligned films for completely exploiting the promising properties of semiconducting single-walled carbon nanotubes (s-SWCNTs). Aligned s-SWCNTs with a large area can be obtained by combining water evaporation and slow withdrawal-induced self-assembly in a dip-coating process. Moreover, the tunability of deposition morphology parameters such as stripe width and spacing is examined. The polarized Raman results show that s-SWCNTs can be aligned in ±8.6°. The derived two terminal photodetector shows both a high negative responsivity of 41 A/W at 520 nm and high polarization sensitivity. Our results indicate that aligned films with a large area may be useful to electronics- and optoelectronics-related applications.

Small ◽  
2012 ◽  
Vol 9 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Tejas A. Shastry ◽  
Jung-Woo T. Seo ◽  
Josue J. Lopez ◽  
Heather N. Arnold ◽  
Jacob Z. Kelter ◽  
...  

2004 ◽  
Vol 856 ◽  
Author(s):  
Bin Chen ◽  
Jing Li ◽  
Yijiang Lu ◽  
Martin Cinke ◽  
Dyng Au ◽  
...  

ABSTRACTWe characterize the electric properties of single-walled carbon nanotube (SWNT) dispersed in the polymethyl methacrylate (PMMA) composites. In the melt-blended sample, the SWNTs – originally semiconducting – became predominantly metallic. The interaction of the PMMA and SWNT is investigated by the polarized Raman studies. The structure changes in the PMMA and SWNT shows that the anisotropic interactions play important role in SWNT electronic density of states (DOS) changes. The increased metallic SWNT percentage is confirmed by the conductivity and dielectric constant measurements of composite and neat PMMA.


Small ◽  
2008 ◽  
Vol 4 (12) ◽  
pp. 2255-2261 ◽  
Author(s):  
Eui Yun Jang ◽  
Tae June Kang ◽  
Hyeoung Wook Im ◽  
Dae Weon Kim ◽  
Yong Hyup Kim

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28135-28145
Author(s):  
Ahmed I. A. Abd El-Mageed ◽  
Takuji Ogawa

For the first time, using scanning probe microscopy, the supramolecular structures of terbium porphyrin double-decker complexes were observed on single-walled carbon nanotubes surfaces, where the molecules formed a well-ordered self-assembled array.


2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Deok-Jin Yu ◽  
D. Ganta ◽  
Elijah Dale ◽  
A. T. Rosenberger ◽  
James P. Wicksted ◽  
...  

We report on the optical properties of fabricated nanohybrid structures containing Au nanorods and functionalized single-walled carbon nanotubes in aqueous solutions. In particular, the absorption spectra of these hybrid materials are studied as a function of the concentration of the functionalized single-walled carbon nanotubes as well as the evolution time following preparation. The absorption spectra show a red shift of the longitudinal plasmon mode of the Au nanorods along with the emergence of broadened structures at wavelengths between 1000 and 1100 nm. These results, supported by TEM images, indicate the self-assembly of the Au nanorods forming on the sidewalls of the functionalized SWNTs driven by polyelectrolyte interactions.


2018 ◽  
Vol 5 (1) ◽  
pp. 201-212 ◽  
Author(s):  
Subrat Kumar Jena ◽  
S. Chakraverty

Abstract In this paper, Differential Quadrature Method (DQM) is applied to investigate free vibration of Single Walled Carbon Nanotubes (SWCNTs) with exponentially varying stiffness based on non-local Euler-Bernoulli beam theory. Application of DQ method in the governing differential equation converts the problem to a generalized eigenvalue problem and its solution gives frequency parameters. Convergence of the results show that DQM solutions converge fast. In this article, a detailed investigation has been reported and MATLAB code has been developed to analyze the numerical results for different scaling parameters as well as for four types of boundary conditions. Present results are compared with other available results and are found to be in good agreement.


2002 ◽  
Vol 132 (1) ◽  
pp. 5-8 ◽  
Author(s):  
Bo Li ◽  
Tingbing Cao ◽  
Weixiao Cao ◽  
Zujin Shi ◽  
Zhennan Gu

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