Search Results - "Adu, Kofi W."

Investigating the phonon line shapes of TMDs: An analytical approach by Zhou, Chenzhang, Adu, Kofi W.

“…Several phenomena can affect the phonon bands of low‐dimensional systems, and their proper assignment and interpretation are essential in elucidating their…”
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Experimental probes of the molecular hydrogen–carbon nanotube interaction by Pradhan, Bhabendra K., Sumanasekera, Gamini U., Adu, Kofi W., Romero, Hugo E., Williams, Keith A., Eklund, Peter C.

“…Electrical transport (resistance R and thermoelectric power S), Raman scattering, and hydrogen adsorption are used to study the interaction of hydrogen…”
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Effect of hot electrons on the electrical conductivity of carbon nanotubes under the influence of applied dc field by Amekpewu, Matthew, Abukari, Sulemana S., Adu, Kofi W., Mensah, Samuel Y., Mensah, Natalia G.

“…The effect of hot electrons on the electrical conductivity of undoped single walled achiral carbon nanotubes (CNTs) under the influence of applied dc field…”
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Enhancing the superconducting temperature of MgB2 by SWCNT dilution by Ma, Danhao, Jayasingha, Ruwantha, Hess, Dustin T., Adu, Kofi W., Sumanasekera, Gamini U., Terrones, Mauricio

“…•We demonstrate an increase in TC of MgB2 without appealing to chemical substitution.•The increase in TC is attributed to hole-doping of the MgB2 via charge…”
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Rectification due to harmonic mixing of two coherent electromagnetic waves with commensurate frequencies in carbon nanotubes by Abukari, Sulemana S., Adu, Kofi W., Mensah, Samuel Y., Mensah, Natalia G., Rabiu, Musah, Twum, Anthony, Amekpewu, Mathew, Dompreh, Kwadwo A.

“…We report on a theoretical investigation of carbon nanotubes subjected to a pure alternating electric field consisting of two phase-shifted harmonic fields of…”
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Amplification of terahertz radiation in carbon nanotubes by Abukari, Sulemana S., Adu, Kofi W., Mensah, Samuel Y., Mensah, Natalia G., Dompreh, Kwadwo A., Twum, Anthony, Rabiu, Musah

“…We investigate theoretically the feasibility of amplification of terahertz radiation in aligned achiral carbon nanotubes, a zigzag (12,0) and an armchair…”
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Morphological, Structural, and Chemical Effects in Response of Novel Carbide Derived Carbon Sensor to NH3, N2O, and Air by Adu, Kofi W, Li, Qixiu, Desai, Sharvil C, Sidorov, Anton N, Sumanasekera, Gamini U, Lueking, Angela D

“…The response of two carbide derived carbons (CDCs) films to NH3, N2O, and room air is investigated by four probe resistance at room temperature and pressures…”
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Raman Scattering from Si1-xGex Alloy Nanowires by LU, Qiujie, ADU, Kofi W., GUTIéRREZ, Humberto R., CHEN, Gugang, LEW, Kok-Keong, NIMMATOORI, Pramod, ZHANG, Xi, DICKEY, Elizabeth C., REDWING, Joan M., EKLUND, Peter C.

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Probing Phonons in Nonpolar Semiconducting Nanowires with Raman Spectroscopy by Adu, Kofi W., Williams, Martin D., Reber, Molly, Jayasingha, Ruwantha, Gutierrez, Humberto R., Sumanasekera, Gamini U.

“…We present recent developments in Raman probe of confined optical and acoustic phonons in nonpolar semiconducting nanowires, with emphasis on Si and Ge. First,…”
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Raman-active phonon line profiles in semiconducting nanowires by Adu, Kofi W., Gutierrez, Humberto R., Eklund, Peter C.

“…Results of Raman scattering investigations of optical phonons confined in the cross section of small diameter Si nanowires are discussed. Using low excitation…”
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Effect of band-gap tuning on absorption of phonons and acoustoelectric current in graphene nanoribbon by Dompreh, Kwadwo A., Sekyi-Arthur, Daniel, Mensah, Samuel Y., Adu, Kofi W., Edziah, Raymond, Amekpewu, Mathew

“…We report the use of Boltzmann Transport Equation (BTE) in the hypersound regime for investigating the generation of acoustoelectric (AE) current in an…”
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Enhancing the superconducting temperature of MgB sub(2) by SWCNT dilution by Ma, Danhao, Jayasingha, Ruwantha, Hess, Dustin T, Adu, Kofi W, Sumanasekera, Gamini U, Terrones, Mauricio

“…We report, for the first time, an increase in the superconducting critical temperature, T sub(C) of commercial "dirty" MgB sub(2) by a nonsubstitutional…”
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Morphological, Structural, and Chemical Effects in Response of Novel Carbide Derived Carbon Sensor to NH 3 , N 2 O, and Air by Adu, Kofi W., Li, Qixiu, Desai, Sharvil C., Sidorov, Anton N., Sumanasekera, Gamini U., Lueking, Angela D.

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Raman Scattering from Si 1- x Ge x Alloy Nanowires by Lu, Qiujie, Adu, Kofi W., Gutiérrez, Humberto R., Chen, Gugang, Lew, Kok-Keong, Nimmatoori, Pramod, Zhang, Xi, Dickey, Elizabeth C., Redwing, Joan M., Eklund, Peter C.

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Raman Scattering from Si1- x Ge x Alloy Nanowires by Lu, Qiujie, Adu, Kofi W, Gutiérrez, Humberto R, Chen, Gugang, Lew, Kok-Keong, Nimmatoori, Pramod, Zhang, Xi, Dickey, Elizabeth C, Redwing, Joan M, Eklund, Peter C

“…We present Raman scattering results on crystalline Si1- x Ge x nanowires (0 < x < 1) grown by the vapor−liquid−solid growth mechanism using chemical vapor…”
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