Quantum spin dynamics

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Ordering and interaction of molecules encapsulated in carbon nanotubes

Materials Science and Technology 20:8 (2004) 969-974

Authors:

AN Khlobystov, K Porfyrakis, DA Britz, M Kanai, R Scipioni, SG Lyapin, JG Wiltshire, A Ardavan, D Nguyen-Manh, RJ Nicholas, DG Pettifor, TJS Dennis, GAD Briggs

Abstract:

A clear understanding of the interactions between the building blocks of self-assembled molecular materials is essential for rational design of functional nanostructures. Intermolecular interactions have been investigated for three different classes of fullerenes in single-walled carbon nanotubes (SWNTs); van der Waals molecule - molecule and molecule - SWNT interactions control the geometry of the molecular arrays inside nanotubes; electrostatic intermolecular forces influence the alignment of polar endohedral fullerenes M@C82; and hydrogen bonding between functionalised fullerenes has a significant effect on the selectivity of insertion of functionalised fullerenes into SWNTs.
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Selective host–guest interaction of single-walled carbon nanotubes with functionalised fullerenes

Chemical Communications 4:2 (2004) 176-177

Authors:

DA Britz, AN Khlobystov, J Wang, AS O’neil, M Poliakoff, A Ardavan, GAD Briggs

Abstract:

Exohedrally functionalised fullerenes have been inserted in single-walled carbon nanotubes (SWNTs) with the aid of supercritical carbon dioxide to form peapods; C61(COOEt)2 are encapsulated in SWNTs in high yield, whereas C61(COOH)2 aggregate via hydrogen bonding to form a supramolecular complex, which sterically hinders encapsulation and causes it to adhere to the exterior surface of the SWNTs. © 2004 The Royal Society of Chemistry.
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Controlled orientation of ellipsoidal fullerene C70 in carbon nanotubes

APPLIED PHYSICS LETTERS 84:5 (2004) 792-794

Authors:

AN Khlobystov, R Scipioni, D Nguyen-Manh, DA Britz, DG Pettifor, GAD Briggs, SG Lyapin, A Ardavan, RJ Nicholas
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Experimental demonstration of emission from a superluminal polarization current - a new class of solid-state source for MHz-TRz and beyond

(2004) 591-592

Authors:

J Singleton, A Ardavan, H Ardavan, J Fopma, D Halliday, W Hayes

Abstract:

We describe the Polarization Synchrotron, an experimental implementation of a superluminal (faster than light in vacuo) polarization current distribution that both oscillates and undergoes centripetal acceleration. The prototype machine produces tightly-beamed monochromatic radiation in the 100s of MHz range. The technique should also have applications as a broad-band GHz-THz source.
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Experimental observation of nonspherically-decaying radiation from a rotating superluminal source (vol 96, pg 4614, 2004)

JOURNAL OF APPLIED PHYSICS 96:12 (2004) 7760-7777

Authors:

A Ardavan, W Hayes, J Singleton, H Ardavan, J Fopma, D Halliday
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