G
Greg O'Bryan
Researcher at Sandia National Laboratories
Publications - 15
Citations - 586
Greg O'Bryan is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Carbon nanotube & Graphene nanoribbons. The author has an hindex of 9, co-authored 15 publications receiving 509 citations.
Papers
More filters
Journal ArticleDOI
Stress Sensing in Polycaprolactone Films via an Embedded Photochromic Compound
TL;DR: A photochromic polymer exhibiting mechanochromic behavior is prepared by means of ring-opening polymerization (ROP) of ε-caprolactone by utilizing a difunctional indolinospiropyran as an initiator to form the colored merocyanine.
Detection of Spatially Distributed Damage in Fiber-Reinforced Polymer Composites.
Timothy W. R. Briggs,Greg O'Bryan,Jack L. Skinner,Bryan R. Loyola,Kenneth J. Loh,Valeria La Saponara,Luciana Arronche +6 more
TL;DR: In this article, a method of embedded damage detection within glass fiber-reinforced polymer composites is described by monitoring the spatially distributed electrical conductivity of a strain-sensitive multiwalled carbon nanotube thin film.
Proceedings Article
Spatial Sensing Using Electrical Impedance Tomography.
Timothy W. R. Briggs,Greg O'Bryan,Bryan R. Loyola,Valeria La Saponara,Kenneth J. Loh,Jack L. Skinner +5 more
TL;DR: In this article, a sprayed conductive carbon nanotube-polymer film was applied to glass fiber-reinforced polymer composite substrates to measure changes in conductivity within the conductive films because of damage.
Journal ArticleDOI
Detection of Spatially Distributed Damage in Fiber-Reinforced Polymer Composites
Bryan R. Loyola,Bryan R. Loyola,Timothy Briggs,Luciana Arronche,Kenneth J. Loh,Valeria La Saponara,Greg O'Bryan,Jack L. Skinner,Jack L. Skinner +8 more
TL;DR: In this paper, a method of embedded damage detection within glass fiber-reinforced polymer composites is described, where damage detection is achieved by monitoring the spatially distributed electrical con...
Journal ArticleDOI
Reversible, opto-mechanically induced spin-switching in a nanoribbon-spiropyran hybrid material
TL;DR: In this paper, it was shown that spiropyran-based, mechanochromic polymer noncovalently deposited on a nanoribbon can collectively function as a dual opto-mechanical switch for modulating its own spin-polarization.