Ultrafast vibrational motion of carbon nanotubes in different pH environments

被引：21

作者：

Makino, Kotaro ^{[1
]}

Hirano, Atsushi ^{[1
]}

Shiraki, Kentaro ^{[1
]}

Maeda, Yutaka ^{[2
,3
]}

Hase, Muneaki ^{[1
,3
]}

机构：

[1] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

[2] Tokyo Gakugei Univ, Dept Chem, Tokyo 1848501, Japan

[3] PRESTO JST, Kawaguchi, Saitama 3320012, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 24期

关键词：

association; carbon nanotubes; colloids; high-speed optical techniques; optical pumping; phonon spectra; photoexcitation; Raman spectra; semiconductor nanotubes; suspensions; SINGLE-WALL; RAMAN-SCATTERING; SPECTROSCOPY; DYNAMICS;

D O I：

10.1103/PhysRevB.80.245428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used a femtosecond pump-probe impulsive Raman technique to explore the ultrafast dynamics of micelle suspended single-walled carbon nanotubes (SWNTs) in various pH environments. The structures of coherent phonon spectra of the radial breathing modes exhibit significant pH dependence, to which we attribute the effect of the protonation at the surface of SWNTs, resulting in the modification of electronic properties of semiconductor SWNTs. Analysis of the time-domain data using a time-frequency transformation uncovers also a second transient longitudinal breathing mode, which vanishes after 1 ps of the photoexcitation.

引用

页数：5

共 34 条

[1] Optical response of small-diameter semiconducting carbon nanotubes under exciton-surface-plasmon coupling [J].

Bondarev, I. V. ;

Tatur, K. ;

Woods, L. M. .

OPTICS COMMUNICATIONS, 2009, 282 (04) :661-665

[2] ANOMALOUS OPTICAL ABSORPTION LIMIT IN INSB [J].

BURSTEIN, E .

PHYSICAL REVIEW, 1954, 93 (03) :632-633

[3] Raman spectroscopy of carbon nanotubes [J].

Dresselhaus, MS ;

Dresselhaus, G ;

Saito, R ;

Jorio, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2005, 409 (02) :47-99

[4] Breathing coherent phonons and caps fragmentation in carbon nanotubes following ultrafast laser pulses [J].

Dumitrica, Traian ;

Garcia, Martin E. ;

Jeschke, Harald O. ;

Yakobson, Boris I. .

PHYSICAL REVIEW B, 2006, 74 (19)

[5] Softening of the Radial Breathing Mode in Metallic Carbon Nanotubes [J].

Farhat, H. ;

Sasaki, K. ;

Kalbac, M. ;

Hofmann, M. ;

Saito, R. ;

Dresselhaus, M. S. ;

Kong, J. .

PHYSICAL REVIEW LETTERS, 2009, 102 (12)

[6]

Gabor D., 1946, J. Inst. Electr. Eng.-Part III: Radio Commun. Eng., V93, P429, DOI [DOI 10.1049/JI-3-2.1946.0074, 10.1049/ji-3-2.1946.0074]

[7] Real-time observation of nonlinear coherent phonon dynamics in single-walled carbon nanotubes [J].

Gambetta, A. ;

Manzoni, C. ;

Menna, E. ;

Meneghetti, M. ;

Cerullo, G. ;

Lanzani, G. ;

Tretiak, S. ;

Piryatinski, A. ;

Saxena, A. ;

Martin, R. L. ;

Bishop, A. R. .

NATURE PHYSICS, 2006, 2 (08) :515-520

[8] Ultrafast dynamics of holes in GaAs probed by two-color femtosecond spectroscopy [J].

Ganikhanov, F ;

Burr, KC ;

Tang, CL .

APPLIED PHYSICS LETTERS, 1998, 73 (01) :64-66

[9] Excitation and chirality dependence of the exciton-phonon coupling in carbon nanotubes [J].

Goupalov, SV ;

Satishkumar, BC ;

Doorn, SK .

PHYSICAL REVIEW B, 2006, 73 (11)

[10] The birth of a quasiparticle in silicon observed in time-frequency space [J].

Hase, M ;

Kitajima, M ;

Constantinescu, AM ;

Petek, H .

NATURE, 2003, 426 (6962) :51-54

← 1 2 3 4 →