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.

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

Inserting fullerene dimers into carbon nanotubes: Pushing the boundaries of molecular self-assembly

AIP CONF PROC 723 (2004) 255-258

Authors:

K Porfyrakis, AN Khlobystov, DA Britz, JJL Morton, A Ardavan, M Kanai, TJS Dennis, GAD Briggs

Abstract:

Carbon nanotubes can encapsulate several molecular species forming one-dimensional crystals. Using previously reported methods we produced directly-bonded, asymmetric C-60-C-70 dimers and oxygen-bridged dimers of the type C-60-O-C-60, We present here microscopic evidence of filling single-waited carbon nanotubes (SWNTs) with the above fullerene dimers. The most important filling constraint is found to be the nanotube size. SWNTs with diameters around 1.6 nm incorporate dimers; considerably more easily than SWNTs with smaller diameters. This kind of molecular self-assembly opens up the potential for using nanotubes and fullerenes for nanodevices.

Synchrotron-Cerenkov radiation - Response

SCIENCE 303:5656 (2004) 310-311

Authors:

A Ardavan, H Ardavan, J Singleton

Unconventional quantum fluid at high magnetic fields in the marginal charge-density-wave system α-(BEDT-TTF)2MHg(SCN)4 (M=K and Rb) -: art. no. 165103

PHYSICAL REVIEW B 69:16 (2004) ARTN 165103

Authors:

N Harrison, J Singleton, A Bangura, A Ardavan, PA Goddard, RD McDonald, LK Montgomery