Search Results - "Kikkawa, J."

Very Low Conductivity Threshold in Bulk Isotropic Single-Walled Carbon Nanotube-Epoxy Composites by Bryning, M. B., Islam, M. F., Kikkawa, J. M., Yodh, A. G.

“…Electrical conductivity of single‐walled carbon nanotube (SWNT)–epoxy composites (see Figure) is investigated as a function of SWNT concentration, mean length,…”
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Lateral drag of spin coherence in gallium arsenide by Awschalom, D. D, Kikkawa, J. M

“…The importance of spin-transport phenomena in condensed-matter physics has increased over the past decade with the advent of metallic giant-magnetoresistive…”
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Carbon Nanotube Aerogels by Bryning, M. B., Milkie, D. E., Islam, M. F., Hough, L. A., Kikkawa, J. M., Yodh, A. G.

“…The creation of carbon nanotube (CNT) aerogels from aqueous‐gel precursors by critical‐point‐drying and freeze‐drying is reported. The CNT aerogels are strong…”
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Direct measurement of the polarized optical absorption cross section of single-wall carbon nanotubes by ISLAM, M. F, MILKIE, D. E, KANE, C. L, YODH, A. G, KIKKAWA, J. M

“…We determine optical absorption cross sections of single-wall carbon nanotubes for visible light copolarized and cross polarized with respect to the nanotube…”
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Energy of K-momentum dark excitons in carbon nanotubes by optical spectroscopy by Torrens, O N, Zheng, M, Kikkawa, J M

“…Phonon sideband optical spectroscopy determines the energy of the dark K-momentum exciton for (6,5) carbon nanotubes. One-phonon sidebands appear in absorption…”
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Thermal conductivity and interfacial resistance in single-wall carbon nanotube epoxy composites by Bryning, M. B., Milkie, D. E., Islam, M. F., Kikkawa, J. M., Yodh, A. G.

“…We report thermal conductivity measurements of purified single-wall carbon nanotube (SWNT) epoxy composites prepared using suspensions of SWNTs in…”
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Growth rate of silicon nanowires by Kikkawa, J., Ohno, Y., Takeda, S.

“…We have measured the growth rate of silicon nanowires (SiNWs), which were grown at temperatures between 365 and 495°C via the vapor-liquid-solid (VLS)…”
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All-Optical Magnetic Resonance in Semiconductors by Kikkawa, J. M., Awschalom, D. D.

“…A scheme is proposed wherein nuclear magnetic resonance (NMR) can be induced and monitored using only optical fields. In analogy to radio-frequency fields used…”
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Room-Temperature Spin Memory in Two-Dimensional Electron Gases by Kikkawa, J. M., Smorchkova, I. P., Samarth, N., Awschalom, D. D.

“…Time-resolved Kerr reflectivity of two-dimensional electron gases in II-VI semiconductors provides a direct measure of electron spin precession and relaxation…”
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Optical manipulation of nuclear spin by a two-dimensional electron gas by Salis, G, Fuchs, D T, Kikkawa, J M, Awschalom, D D, Ohno, Y, Ohno, H

“…Conduction electrons are used to optically polarize, detect, and manipulate nuclear spin in a (110) GaAs quantum well. Using optical Larmor magnetometry, we…”
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Resonant Spin Amplification in n -Type GaAs by Kikkawa, J. M., Awschalom, D. D.

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Fe-rich and Mn-rich nanodomains in Li1.2Mn0.4Fe0.4O2 positive electrode materials for lithium-ion batteries by Kikkawa, J., Akita, T., Tabuchi, M., Shikano, M., Tatsumi, K., Kohyama, M.

“…The authors investigated the distribution and local valence states of transition metal ions in a positive electrode material for lithium-ion batteries,…”
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Calculation of the chirality-dependent orbital magnetic anisotropy in doped semiconducting single-walled carbon nanotubes by Vora, P.M., Torrens, O.N., Kikkawa, J.M.

“…We calculate the orbital magnetic anisotropy (Δ χ) of semiconducting single-walled carbon nanotubes at different carrier densities using a nearest-neighbor…”
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Vertical dislocations in Ge films selectively grown in submicron Si windows of patterned substrates by Harada, S., Kikkawa, J., Nakamura, Y., Wang, G., Caymax, M., Sakai, A.

“…The structural properties of straight screw dislocations extended in the [001] direction formed in squared- and line shaped- Ge(001) films selectively grown on…”
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Magnetic heterogeneity and alignment of single wall carbon nanotubes by ISLAM, M. F, MILKIE, D. E, TORRENS, O. N, YODH, A. G, KIKKAWA, J. M

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Electrical characterization of wafer-bonded Ge(111)-on-insulator substrates using four-point-probe pseudo-metal-oxide-semiconductor field-effect transistor method by Minami, K., Nakamura, Y., Yamasaka, S., Yoshitake, O., Kikkawa, J., Izunome, K., Sakai, A.

“…The electrical properties of wafer-bonded n-type Ge(111)-on-insulator (Ge(111)-OI) substrates were characterized using a four-point-probe…”
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High-Purity Diamagnetic Single-Wall Carbon Nanotube Buckypaper by Kim, Younghyun, Torrens, Omar N, Kikkawa, J. M, Abou-Hamad, Edy, Goze-Bac, Christophe, Luzzi, David E

“…We describe a novel purification process for single-wall carbon nanotube (SWNT) materials that removes non-nanotube carbon and reduces ferromagnetic impurities…”
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Cross-sectional X-ray microdiffraction study of a thick AlN film grown on a trench-patterned AlN/α-Al2O3 template by Khan, D.T., Takeuchi, S., Kikkawa, J., Nakamura, Y., Miyake, H., Hiramatsu, K., Imai, Y., Kimura, S., Sakata, O., Sakai, A.

“…X-ray microdiffraction (XRMD) measurements using the AlN 22¯01 and 12¯10 Bragg reflections were performed to determine the cross-sectional distribution of…”
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Photoluminescence from Intertube Carrier Migration in Single-Walled Carbon Nanotube Bundles by Torrens, O. N, Milkie, D. E, Zheng, M, Kikkawa, J. M

“…Photoluminescence (PL) identifies spectroscopic signatures of intertube transfer of optically pumped carriers in single-walled carbon nanotube (SWNT)…”
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Coherent transfer of spin through a semiconductor heterointerface by Malajovich, I, Kikkawa, J M, Awschalom, D D, Berry, J J, Samarth, N

“…Spin transport between two semiconductors of widely different band gaps is time resolved by two-color pump-probe optical spectroscopy. Electron spin coherence…”
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