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Malagu, M. (author)
The development of carbon nanotube(CNT)-polymer composites advocates for a better understanding of their physical and mechanical properties that depend on the diameter of the embedded CNTs. Given that the experimental assessment of size effects is extremely difficult, the use of numerical models can be enormously helpful. However, since size...
doctoral thesis 2017
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Rajegowda, Rakesh (author), Kannam, Sridhar Kumar (author), Hartkamp, R.M. (author), Sathian, Sarith P. (author)
Thermal-gradient induced transport of ionic liquid (IL) and water droplets through a carbon nanotube (CNT) is investigated in this study using molecular dynamics simulations. Energetic analysis indicates that IL transport through a CNT is driven primarily by the fluid-solid interaction, while fluid-fluid interactions dominate in water-CNT...
journal article 2017
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Poelma, R.H. (author)
This thesis describes a series of experiments and fabrication methods on high-aspect-ratio 3D microstructures for wafer level packaging and 3D heterogeneous system integration (3D-HSI) using novel materials such as carbon nanotubes and thick-film photo-resists. Furthermore, theoretical and experimental research efforts are made to understand the...
doctoral thesis 2016
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Poelma, R.H. (author), Morana, B. (author), Vollebregt, S. (author), Schlangen, H.E.J.G. (author), Van Zeijl, H.W. (author), Fan, X. (author), Zhang, G.Q. (author)
The porous nature of carbon nanotube (CNT) arrays allows for the unique opportunity to tailor their mechanical response by the infiltration and deposition of nanoscale conformal coatings. Here, we fabricate novel photo-lithographically defined CNT pillars that are conformally coated with amorphous silicon carbide (a-SiC) to strengthen the...
journal article 2014
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Barkelid, K.M. (author)
doctoral thesis 2014
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Vollebregt, S. (author)
Interconnects in integrated circuits (IC) are the major cause of power dissipation and delay. 3D integration has been proposed as a method to reduce these issues. For this 3D integration, fabrication of high aspect ratio reliable vertical interconnects (vias) are required. For this new materials, like carbon nanotubes (CNT), are being considered...
doctoral thesis 2014
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Meerwaldt, H.B. (author), Johnston, S.R. (author), Van der Zant, H.S.J. (author), Steele, G.A. (author)
We report fast readout of the motion of a carbon nanotube mechanical resonator. A close-proximity high electron mobility transistor amplifier is used to increase the bandwidth of the measurement of nanotube displacements from the kHz to the MHz regime. Using an electrical detection scheme with the nanotube acting as a mixer, we detect the...
journal article 2013
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Aïssa, B. (author), Therriault, D. (author), Haddad, E. (author), Jamroz, W. (author), Tagziria, K. (author), Loiseau, J. (author), Higgins, A. (author), Khan, M.A. (author), Hoa, S.V. (author)
The presence in space of micrometeoroids and orbital debris, particularly in the lower earth orbit, presents a continuous hazard to orbiting satellites, spacecrafts and the international space station. Space debris includes all non-functional, man-made objects and fragments. As the population of debris continues to grow, the probability of...
conference paper 2013
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Vollebregt, S. (author), Banerjee, S. (author), Beenakker, K. (author), Ishihara, R. (author)
The thermal conductivity of as-grown vertical multi-walled carbon nanotubes (CNT) bundles fabricated at low temperature (500?°C) was measured using a vertical 3?-method. For this, CNT were selectively grown inside an oxide opening and sandwiched between two metal electrodes. The validity of the method was confirmed by both measurements as...
journal article 2013
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Meerwaldt, H.B. (author)
A carbon nanotube (CNT) is a remarkable material and can be thought of as a single-atom thick cylinder of carbon atoms capped of with a semisphere. This is called a single-walled CNT and, depending on how the cylinder is rolled up, CNTs are either semiconducting or metallic. A CNT is made into a mechanical resonator by suspending it between two...
doctoral thesis 2013
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Keijzers, C.J.H. (author)
doctoral thesis 2012
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Hortensius, H.L. (author), Öztürk, A. (author), Zeng, P. (author), Driessen, E.F.C. (author), Klapwijk, T.M. (author)
Antenna-coupled suspended single carbon nanotubes exposed to 108?GHz microwave radiation are shown to be selectively heated with respect to their metal contacts. This leads to an increase in the conductance as well as to the development of a power-dependent DC voltage. The increased conductance stems from the temperature dependence of tunneling...
journal article 2012
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Han, B. (author), Yang, Z. (author), Shi, X. (author), Yu, X. (author)
This paper preliminarily investigates the general transport properties (i.e., water sorptivity, water permeability, and gas permeability) of carbon-nanotube/cement composites. Carboxyl multi-walled carbon nanotubes (MWNTs) are dispersed into cement mortar to fabricate the carbon nanotubes (CNTs) reinforced cement-based composites by applying...
journal article 2012
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Buchs, G. (author), Barkelid, K.M. (author), Bagiante, S. (author), Steele, G.A. (author), Zwiller, V. (author)
We use scanning photocurrent microscopy (SPCM) to investigate individual suspended semiconducting carbon nanotube devices where the potential profile is engineered by means of local gates. In situ tunable p-n junctions can be generated at any position along the nanotube axis. Combining SPCM with transport measurements allows a detailed...
journal article 2011
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Götz, G.T.J. (author)
We experimentally investigate Quantum Dots, formed in Carbon Nanotubes. The first part of this thesis deals with charge sensing on such quantum dots. The charge sensor is a metallic Single-electron-transistor, sensitive to the charge of a single electron on the quantum dot. We use this technique for real-time charge readout and precise tuning of...
doctoral thesis 2010
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Zonnevylle, A.C. (author), Hagen, C.W. (author), Kruit, P. (author), Valenti, M. (author), Schmidt-Ott, A. (author)
Positioning of charged nanoparticles with the help of charge patterns in an insulator substrate is a known method. However, the creation of charge patterns with a scanning electron microscope for this is relatively new. Here a scanning electron microscope is used for the creation of localized charge patterns in an insulator, while a glowing wire...
journal article 2009
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Ishii, M. (author), Hamilton, B. (author), Poolton, N. (author)
We have observed the distribution of electron trapping centers on distorted carbon nanotubes (CNTs) by a unique x-ray analysis technique that has both elemental and spatial selectivities. This technique involves the use of scanning probe microscopy (SPM) under synchrotron radiation excitation of the inner shell of carbon. The probe detects the...
journal article 2008
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Morisato, T. (author), Ohno, K. (author), Ohtsuki, T. (author), Hirose, K. (author), Sluiter, M. (author), Kawazoe, Y. (author)
Carrying out a first-principles calculation assuming linear relationship between the electron density at Be nucleus and the electron-capture (EC) decay rate, we explained why 7Be@C60 shows higher EC decay rate than 7Be crystal, which was originally found experimentally by Ohtsuki et al. [Phys. Rev. Lett. 93, 112501 (2004)]. From the results of...
journal article 2008
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Witkamp, B. (author), Poot, M. (author), Pathangi, H. (author), Hüttel, A.K. (author), Van der Zant, H.S.J. (author)
We have fabricated suspended metal paddle resonators with carbon nanotubes functioning as self-detecting torsional springs. We observe gate-tunable resonances that either tune to higher or to lower frequencies when increasing the dc voltage on the back gate. We attribute the former modes to flexural vibrations of the paddle resonator, while the...
journal article 2008
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Ghatak, K.P. (author), Bhattacharya, S. (author), Bhowmik, S. (author), Benedictus, R. (author), Choudhury, S. (author)
We study thermoelectric power under strong magnetic field (TPM) in carbon nanotubes (CNTs) and quantum wires (QWs) of nonlinear optical, optoelectronic, and related materials. The corresponding results for QWs of III-V, ternary, and quaternary compounds form a special case of our generalized analysis. The TPM has also been investigated in QWs of...
journal article 2008
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