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Development of Flexible Puncture Resistant Materials System Using Silica Nanoparticles
Title
Development of Flexible Puncture Resistant Materials System Using Silica Nanoparticles.
Creator
Clements, Floria Eve, Mahfuz, Hassan, Florida Atlantic University
Abstract/Description
Nanoscale silica particles are functionalized and ultrasonically dispersed into a mixture of polyethylene glycol and ethanol, and then reinforced with Kevlar. The stab or puncture resistance of the flexible nanophased materials system supersedes recent advances made in this area. Through SEM scans, thermal and chemical analysis, it is evident that the functionalized nanoparticles offer multiple facets of resistance to penetration of a sharp impactor. The improvement in protection is traced to...
Show moreNanoscale silica particles are functionalized and ultrasonically dispersed into a mixture of polyethylene glycol and ethanol, and then reinforced with Kevlar. The stab or puncture resistance of the flexible nanophased materials system supersedes recent advances made in this area. Through SEM scans, thermal and chemical analysis, it is evident that the functionalized nanoparticles offer multiple facets of resistance to penetration of a sharp impactor. The improvement in protection is traced to the formation of siloxane bonds during functionalization. The framework for a theoretical model is established to estimate penetration depth under low velocity impact of a sharp object through the flexible composite. For comparison ofthese novel fabric composites, a method is also introduced to evaluate penetration resistance quantitatively. The method is capable of showing subtle changes that would otherwise be missed.
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Date Issued
2007
PURL
http://purl.flvc.org/fau/fd/FA00012513
Subject Headings
Nanostructured materials, Reinforced plastics, Fibrous composites, Nanotechnology
Format
Document (PDF)
Secure Communication by Coherence Modulation at the Photon Counting Level
Title
Secure Communication by Coherence Modulation at the Photon Counting Level.
Creator
Boughanmi, Abdellatif, Rhodes, William T., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description
Secure communication is a topic of great importance. The goal of our research reported here is to develop a scheme of secure communication system using coherence modulation at the photon counting level. When operated at the photon counting level, coherence modulation can provide quantifiably secure binary transmission between two entities, security being based on the nonclonability of photons. The objectives of the research are as follows: Show that interferometer-based coherence modulation...
Show moreSecure communication is a topic of great importance. The goal of our research reported here is to develop a scheme of secure communication system using coherence modulation at the photon counting level. When operated at the photon counting level, coherence modulation can provide quantifiably secure binary transmission between two entities, security being based on the nonclonability of photons. The objectives of the research are as follows: Show that interferometer-based coherence modulation can provide physics guaranteed secure binary transmission where each bit is associated with a countable number of photons. Review the operation of conventional high-light-level coherence modulation communication and then show, by means of example, that through the reduction of light intensities to photon-counting levels the system can be made secure. Analyze a particular attack on the system to demonstrate the quantifiability of the scheme’s security. Implement a version of the BB84 quantum key distribution protocol by slightly modifying our scheme in order to achieve a greater security. Identify a variety of issues related to hardware and the challenges of implementing our scheme in the real world.
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Date Issued
2017
PURL
http://purl.flvc.org/fau/fd/FA00004809, http://purl.flvc.org/fau/fd/FA00004809
Subject Headings
Photonics., Statistical communication theory., Optical data processing., Nanotechnology--Technological innovations., Quantum communication.
Format
Document (PDF)