Papers – Page 61 – TechConnect Briefs

Quantum Dot Modified Multiwall Carbon Nanotubes

Olek M., Büsgen T., Mulvaney P., van Embden J., Hilgendorff M., Mulvaney P., Giersig M., CAESAR, DE

The key advantage of our research is a noninvasive functionalization of carbon nanotubes, which ensures good dispersion and stability of carbon nanotubes (CNT) in a vast range of organic and inorganic solvents. The method can [...]

Dispersion and rheological aspects of SWNTs in ultra high molecular weight polyethylene

Zhang Q., Lippits D.R., Vaidya S.N., Rastogi S., Eindhoven University of Technology, NL

A new method is developed to homogeneously disperse single-walled carbon nanotubes bundles (SWNTs) in an intractable polymer, for example, ultrahigh molecular weight polyethylene (Mw>3*106 g/mol) (UHMWPE). The dispersion is obtained by spraying an aqueous solution [...]

Qubit Entanglement from a Bipartite Atomic System in a Carbon Nanotube

Bondarev I.V., Vlahovic B., North Carolina Central University, US

The development of materials that may host quantum coherent states is a critical research problem for the nearest future. Important would be to demonstrate quantum information transfer between two quantum bits arbitrarily separated in the [...]

Vibration damping/dynamic properties of CNT-reinforced composite structures

Kireitseu M.V., Rolls-Royce Centre in Damping, the University of Sheffield, UK, UK

Energy dissipation (damping) in structures/materials is important as it reduces resonant amplitudes/noise levels giving enhanced integrity and life cycle behavior. If we then go to the nanoscale, the damping levels/dynamics of materials are mostly unknown [...]

Interfacial Properties of Carbon Nanotube Arrays

Zalamea L., Pipes R.B., Purdue University, US

The present study springs from the investigation of Salvetat et al.4 wherein the ratio of flexural deformation to applied load of the carbon nanotube array was used to determine a reduced Young’s modulus and effective [...]

Field emission characteristics of carbon nanofibers grown on the electroplated copper micro-tips

Sung W-Y, Kim W-J, Kim Y.H., Lee H.Y., Lee S.M., Yoo H-S, Lee H.Y., Lee S.M., Joo S-K, Kim W-J, Kim Y.H., Seoul National University, KR

Carbon nanofibers (CNFs) were synthesized on micro-copper tips by using direct current plasma enhanced chemical vapor deposition of C2H2 and NH3 gas at 480℃. The copper micro-tips were uniformly formed by high current electroplating and [...]

Spin Glass Behaviour of Magnetic Carbon Nanoclusters

Rode A.V., Christy A.G., Madsen N.R., Gamaly E.G., Luther-Davies B., Arcon D., Zorko A., Jaglicic Z., The Australian National University, AU

Carbon nanoclusters produced by high-repetition-rate laser ablation of graphite and glassy carbon in Ar exhibits para- and ferromagnetic behavior up to 90 K, showing a narrow hysteresis curve with a coercive force Hc = 420 [...]

Nanotube in a periodic potential: A conveyer belt for electrons

Novikov D.S., Princeton University, US

We consider a carbon nanotube in the presence of an externally appliedperiodic potential. We show that, as a function of gate voltage that controls electron density (counted from the half-filled pi-band), the electron states can [...]

ZnO Nanoparticles Beaded Multiwalled Carbon Nanotubes

Zhu Y., Elim H.I., Foo Y.L., Triparthy S., Quek W.T., Ji W., Thong J., Sow C.H., National University of Singapore, SG

In this work, we report a hybrid system of ZnO nanoparticles on MWNT scaffolds synthesized via a very simple and straightforward process. This involved the coating of pure Zn on as-grown aligned MWNT films, followed [...]

Carbon nanotube Josephson junctions

Jørgensen H.I., Grove-Rasmussen K., Lindelof P.E., NanoScience Center, DK

We have succeeded in making reproducible superconducting contacts to gated single-walled carbon nanotubes (SWCNTs). Devices with two types of superconducting trilayer electrodes are fabricated; Ti/Al/Ti and Ti/Nb/Ti. We have devices both in the high transparency [...]