Tailored Force Fields for Flexible Fabrication

Wanis, Sameh Sadarous

Title:

Tailored Force Fields for Flexible Fabrication

dc.contributor.advisor	Komerath, Narayanan M.
dc.contributor.author	Wanis, Sameh Sadarous	en_US
dc.contributor.committeeMember	Armanios, Erian A.
dc.contributor.committeeMember	Braun, Robert D.
dc.contributor.committeeMember	Peterson, Andrew
dc.contributor.committeeMember	Thibeault, Sheila
dc.contributor.department	Engineering	en_US
dc.contributor.department	Aerospace Engineering
dc.date.accessioned	2006-06-09T18:21:53Z
dc.date.available	2006-06-09T18:21:53Z
dc.date.issued	2006-04-11	en_US
dc.description.abstract	The concept of tailored force fields is seen as an enabler for the construction of large scale space structures. Manufacturing would take place in space using in-situ resources thereby eliminating the size and weight restriction commonly placed on space vehicles and structures. This thesis serves as the first investigation of opening the way to a generalized fabrication technology by means of force fields. Such a technology would be non-contact, flexible, and automated. The idea is based on the principle that waves carry momentum and energy with no mass transport. Scattering and gradient forces are generated from various types of wave motion. Starting from experiments on shaping walls using acoustic force fields, this thesis extends the technology to electromagnetic fields. The interaction physics of electromagnetic waves with dielectric material is studied. Electromagnetic forces on neutral dielectric material are shown to be analogous to acoustic forces on sound-scattering material. By analogy to the acoustic experiments, force fields obtained by optical tweezers are extended to longer wavelength electromagnetic waves while remaining in the Rayleigh scattering regime. Curing of the surface formed takes place by use of a higher frequency beam that scans the surface and melts a subsurface layer enabling a sintering effect to take place between the particles. The resulting capability is explored at its extremes in the context of building massive structures in Space. A unification of these areas is sought through a generalization of the various theories provided in the literature applicable for each field.	en_US
dc.description.degree	Ph.D.	en_US
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dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/10540
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.subject	Scattering	en_US
dc.subject	Dipole forces
dc.subject	Gradient forces
dc.subject	Radiation pressure
dc.subject	Acoustic shaping
dc.subject	Electromagnetic shaping
dc.subject	Self-assembly
dc.subject	Force fields
dc.subject.lcsh	Electromagnetic theory	en_US
dc.subject.lcsh	Acoustic radiation pressure	en_US
dc.title	Tailored Force Fields for Flexible Fabrication	en_US
dc.type	Text
dc.type.genre	Dissertation
dspace.entity.type	Publication
local.contributor.corporatename	College of Engineering
local.contributor.corporatename	Daniel Guggenheim School of Aerospace Engineering
local.relation.ispartofseries	Doctor of Philosophy with a Major in Aerospace Engineering
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