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Lateral compliance of a compressed rod supported by an elastic foundation, with application to micro-electronic and fibre-optic structures

E Suhir

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In some optical fibre (OF) structures (such as, e.g. dual-coated OF interconnects) or in carbon-nano-fibre (CNF) arrays embedded into elastic media (e.g. when these arrays are used in heat removal devices), the OFs or the CNFs can be idealized as cantilever beams (rods) that experience both axial compression and lateral loading. We show that axial compression can increase considerably the compliance of the OF or the CNF with respect to the lateral loading. We develop simple predictive models for the assessment of this effect. The analysis is limited to small (pre-buckling) deflections of the structural elements in question.


PACS

42.81.-i Fiber optics

62.25.-g Mechanical properties of nanoscale systems

81.40.Lm Deformation, plasticity, and creep

62.20.F- Deformation and plasticity

Subjects

Optics, quantum optics and lasers

Condensed matter: structural, mechanical & thermal

Nanoscale science and low-D systems

Dates

Issue 1 (7 January 2008)

Received 27 September 2007, in final form 28 September 2007

Published 17 December 2007



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