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22 Oct 2001

Volume 79, Issue 17, pp. 2681-2850

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Remarkable transmission of microwaves through a wall of long metallic bricks

Alastair P. Hibbins, J. Roy Sambles, Chris R. Lawrence, and Donna M. Robinson

Appl. Phys. Lett. 79, 2844 (2001); http://dx.doi.org/10.1063/1.1412593 (3 pages) | Cited 12 times

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The transmitted intensity of a microwave beam through a thick continuous metal wall will be effectively zero due to the almost complete exclusion of the electric field from the metal. However, it is shown here that by removing less than 20% of the wall material to produce a regular array of bricks, up to 90% of the radiation is transmitted, despite the gaps between the bricks being less than 5% of the incident wavelength. This result is attributed to the excitation of a set of resonant waves along the cavity length through the coupling together of surface–plasmon modes across its width. © 2001 American Institute of Physics.
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41.20.Jb Electromagnetic wave propagation; radiowave propagation
73.20.Mf Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
78.70.Gq Microwave and radio-frequency interactions

Resonant infrared pulsed-laser deposition of a sorbent chemoselective polymer

D. M Bubb, J. S. Horwitz, R. A. McGill, D. B. Chrisey, M. R. Papantonakis, R. F. Haglund, and B. Toftmann

Appl. Phys. Lett. 79, 2847 (2001); http://dx.doi.org/10.1063/1.1406556 (3 pages) | Cited 13 times

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Fluoropolyol, a sorbent chemoselective polymer, has been deposited as a thin film by resonant infrared pulsed laser deposition using a free electron laser operating at 2.90 μm, a wavelength resonant with the hydroxl stretch. A comparison of the infrared absorbance of the deposited film and starting material shows no evidence of chemical decomposition in the film. Gel permeation chromatography shows that the film and starting material have nearly the same molar mass. The results are particularly applicable to the fabrication of chemical and biological sensors. The concept of resonant pulsed laser deposition using intrinsic vibrational modes may have wide applicability for organic materials. © 2001 American Institute of Physics.
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78.66.Qn Polymers; organic compounds
81.15.Fg Pulsed laser ablation deposition
63.50.-x Vibrational states in disordered systems
81.05.Mh Cermets, ceramic and refractory composites
61.41.+e Polymers, elastomers, and plastics
82.80.Bg Chromatography
78.30.Jw Organic compounds, polymers
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