Quantitative characterization of SWNT orientation by polarized Raman spectroscopy

✍ Scribed by Tao Liu; Satish Kumar

• Book ID: 104108519
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 202 KB
• Volume: 378
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/s0009-2614(03)01287-9

✦ Synopsis

A generalized spherical harmonics expanded orientation distribution function (ODF) has been used to study the orientation of SWNTs. A relationship between the second-and fourth-order SWNT orientation parameters and the Raman scattering intensity and depolarization ratio has been established. Only by determining the VV and VH intensities at 0°and 90°to the orientation direction, the second-and fourth-order SWNT orientation parameters can be determined. From the second-and fourth-order orientation parameters, orientation distribution function can be constructed using the maximum entropy formalism.