Electronically controlled optical polarization evolution in carbon nanotubes

2021 ◽  
Author(s):  
Marco Antonio Hernández‐Acosta ◽  
Claudia Lizbeth Martínez‐González ◽  
Christopher René Torres‐SanMiguel ◽  
Martin Trejo‐Valdez ◽  
Hugo Martínez‐Gutiérrez ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Optical Polarization ◽  
Polarization Evolution

Electrical and optical polarization responses of composite films based on aligned carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86811-86816 ◽  
Author(s):  
Yuejiang Wen ◽  
Xiangdong Xu ◽  
Minghui Sun ◽  
Qiong He ◽  
Meng Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Vanadium Oxide ◽  
Composite Films ◽  
Optical Polarization ◽  
Large Area ◽  
Efficient Approach ◽  
Aligned Carbon Nanotubes ◽  
Prepared Composite

A simple and efficient approach for large-area preparation of horizontally-aligned carbon nanotube (CNT)–vanadium oxide (VOx) composite films is presented. The as-prepared composite films particularly exhibit electrical and optical anisotropies.

Magnetic-field strengths from optical polarization data

1967 ◽  
Vol 31 ◽  
pp. 381-383
Author(s):  
J. M. Greenberg
Keyword(s):  
Magnetic Field ◽  
Optical Polarization ◽  
Polarization Data ◽  
Term Model ◽  
Source Of Information ◽  
Field Strengths

Van de Hulst (Paper 64, Table 1) has marked optical polarization as a questionable or marginal source of information concerning magnetic field strengths. Rather than arguing about this–I should rate this method asq+-, or quarrelling about the term ‘model-sensitive results’, I wish to stress the historical point that as recently as two years ago there were still some who questioned that optical polarization was definitely due to magnetically-oriented interstellar particles.

Structural phenomena in the growth of carbon nanotubes

1993 ◽  
Vol 51 ◽  
pp. 750-751
Author(s):  
Jun Jiao
Keyword(s):  
Carbon Nanotubes ◽  
Growth Mechanism ◽  
Carbonaceous Material ◽  
Cluster Growth ◽  
Structural Elements ◽  
Rich Variety ◽  
Different Shapes ◽  
Point To Point

HREM studies of the carbonaceous material deposited on the cathode of a Huffman-Krätschmer arc reactor have shown a rich variety of multiple-walled nano-clusters of different shapes and forms. The preparation of the samples, as well as the variety of cluster shapes, including triangular, rhombohedral and pentagonal projections, are described elsewhere.The close registry imposed on the nanotubes, focuses attention on the cluster growth mechanism. The strict parallelism in the graphitic separation of the tube walls is maintained through changes of form and size, often leading to 180° turns, and accommodating neighboring clusters and defects. Iijima et. al. have proposed a growth scheme in terms of pentagonal and heptagonal defects and their combinations in a hexagonal graphitic matrix, the first bending the surface inward, and the second outward. We report here HREM observations that support Iijima’s suggestions, and add some new features that refine the interpretation of the growth mechanism. The structural elements of our observations are briefly summarized in the following four micrographs, taken in a Hitachi H-8100 TEM operating at an accelerating voltage of 200 kV and with a point-to-point resolution of 0.20 nm.

Carbon nanotubes: Twist 'n' roll

Nature China ◽  
2007 ◽  
Author(s):  
Rachel Pei Chin Won
Keyword(s):  
Carbon Nanotubes
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