Selective Separation of Semiconducting Single-Walled Carbon Nanotubes via Microwave Irradiation
نویسندگان
چکیده
منابع مشابه
Selective growth of well-aligned semiconducting single-walled carbon nanotubes.
High-density arrays of perfectly aligned single-walled carbon nanotubes (SWNTs) consisting almost exclusively of semiconducting nanotubes were grown on ST-cut single crystal quartz substrates. Raman spectroscopy together with electrical measurements of field effect transistors (FETs) fabricated from the as-grown samples showed that over 95% of the nanotubes in the arrays are semiconducting. The...
متن کاملSelective Separation of Single-Walled Carbon Nanotubes in Solution
SWCNT can be conceptualized by wrapping a one-atomic-layer thick graphene into a hollow cylinder. As shown in Figure 1, the wrapping way is represented by the chiral vector (n, m), which denote the number of unit vectors along two directions in the crystal lattice of graphene sheet.1 Because of the symmetry and unique electronic structure of graphene, the structures of SWCNTs strongly affect th...
متن کاملSelective aggregation of single-walled carbon nanotubes via salt addition.
Single-walled carbon nanotubes (SWNTs) can be dispersed as individuals in H2O using sodium dodecylsulfate (SDS), typically at 1% (35 mM) concentration. At and above the critical micellar concentration (cmc 8 mM at 25 °C), the degree of ionization of SDS is 0.27.1 Once intertube van der Waals (VdW) attraction is overcome by intense sonication, free SDS adsorbs to SWNT surfaces and creates a net ...
متن کاملFemtosecond photon echo spectroscopy of semiconducting single-walled carbon nanotubes.
Three-pulse photon echo peak shift measurements were performed on semiconducting single-walled carbon nanotubes embedded in polymer matrix at room temperature. Simultaneous modeling of the peak shift data in the limit of zero-intensity and the linear absorption spectrum enable us to extract an intrinsic homogeneous line width of 178 cm(-1), an inhomogeneous width of 698 cm(-1), and a Huang-Rhys...
متن کاملTwo-Dimensional Electronic Spectroscopy of Semiconducting Single-Walled Carbon Nanotubes
Application of 2D Fourier transform electronic spectroscopy to semiconducting SWNTs is demonstrated to decongest complex exciton dynamics. Analysis provides the E22 homogeneous linewidth, and elucidates the roles of vibrational and multi-exciton states in population relaxation.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korean Vacuum Society
سال: 2011
ISSN: 1225-8822
DOI: 10.5757/jkvs.2011.20.4.294