{"id":441,"date":"2017-11-04T13:29:59","date_gmt":"2017-11-04T13:29:59","guid":{"rendered":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/?p=441"},"modified":"2017-11-04T13:29:59","modified_gmt":"2017-11-04T13:29:59","slug":"z-liang-i-wildeson-r-colby-d-ewoldt-t-zhang-t-d-sands-e-stach-b-benes-e-garcia-built-in-electric-field-minimization-in-in-ga-n-nanoheterostructures-nano-letters-11114515-4519","status":"publish","type":"post","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/11\/04\/z-liang-i-wildeson-r-colby-d-ewoldt-t-zhang-t-d-sands-e-stach-b-benes-e-garcia-built-in-electric-field-minimization-in-in-ga-n-nanoheterostructures-nano-letters-11114515-4519\/","title":{"rendered":"Z Liang, I Wildeson, R Colby, D Ewoldt, T Zhang, T D Sands, E Stach, B Benes, E Garc\u00eda &#8220;Built-In Electric Field Minimization in (In, Ga) N Nanoheterostructures.&#8221; \u00a0Nano Letters. 11(11):4515-4519, 2011."},"content":{"rendered":"<p>Z Liang, I Wildeson, R Colby, D Ewoldt, T Zhang, T D Sands, E Stach, B Benes, E Garc\u00eda &#8220;<a class=\"gsc_vcd_title_link\" href=\"http:\/\/pubs.acs.org\/doi\/abs\/10.1021\/nl1044605\" target=\"_blank\" rel=\"noopener\" data-clk=\"hl=en&amp;sa=T&amp;ei=StL9WfLEJcq5mAHPuaXICQ\">Built-In Electric Field Minimization in (In, Ga) N Nanoheterostructures<\/a>.&#8221; \u00a0Nano Letters. 11(11):4515-4519, 2011.<\/p>\n<h3>Abstract<\/h3>\n<p>(In, Ga)N nanostructures show great promise as the basis for next generation LED lighting technology, for they offer the possibility of directly converting electrical energy into light of any visible wavelength without the use of down-converting phosphors. In this paper, three-dimensional computation of the spatial distribution of the mechanical and electrical equilibrium in nanoheterostructures of arbitrary topologies is used to elucidate the complex interactions between geometry, epitaxial strain, remnant polarization, and piezoelectric and dielectric contributions to the self-induced internal electric fields. For a specific geometry\u2014nanorods with pyramidal caps\u2014we demonstrate that by tuning the quantum well to cladding layer thickness ratio, <i>h<\/i><sub>w<\/sub>\/<i>h<\/i><sub>c<\/sub>, a minimal built-in electric field can be experimentally realized and canceled, in the limit of <i>h<\/i><sub>w<\/sub>\/<i>h<\/i><sub>c<\/sub> = 1.28, for large <i>h<\/i><sub>c<\/sub> values.<\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"post-excerpt\" class=\"post-excerpt\">Z Liang, I Wildeson, R Colby, D Ewoldt, T Zhang, T D&hellip;<\/p>\n<div class=\"link-more\"><a href=\"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/11\/04\/z-liang-i-wildeson-r-colby-d-ewoldt-t-zhang-t-d-sands-e-stach-b-benes-e-garcia-built-in-electric-field-minimization-in-in-ga-n-nanoheterostructures-nano-letters-11114515-4519\/\">Continue reading<span class=\"screen-reader-text\"> &#8220;Z Liang, I Wildeson, R Colby, D Ewoldt, T Zhang, T D Sands, E Stach, B Benes, E Garc\u00eda &#8220;Built-In Electric Field Minimization in (In, Ga) N Nanoheterostructures.&#8221; \u00a0Nano Letters. 11(11):4515-4519, 2011.&#8221;<\/span>&hellip;<\/a><\/div>\n<div class=\"link-more\"><a href=\"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/11\/04\/z-liang-i-wildeson-r-colby-d-ewoldt-t-zhang-t-d-sands-e-stach-b-benes-e-garcia-built-in-electric-field-minimization-in-in-ga-n-nanoheterostructures-nano-letters-11114515-4519\/\">Continue reading<span class=\"screen-reader-text\"> \"Z Liang, I Wildeson, R Colby, D Ewoldt, T Zhang, T D Sands, E Stach, B Benes, E Garc\u00eda &#8220;Built-In Electric Field Minimization in (In, Ga) N Nanoheterostructures.&#8221; \u00a0Nano Letters. 11(11):4515-4519, 2011.\"<\/span>&hellip;<\/a><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[45],"tags":[58,53,15],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peeeSR-77","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":387,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/10\/31\/dislocation-filtering-in-gan-nanostructures\/","url_meta":{"origin":441,"position":0},"title":"R Colby, Z Liang, IH Wildeson, DA Ewoldt, TD Sands, RE Garc\u00eda, EA Stach &#8220;Dislocation Filtering in GaN Nanostructures.&#8221; \u00a0Nano Letters. 10(5): 1568-1573, 2010.","date":"10\/31\/2017","format":false,"excerpt":"R Colby, Z Liang, IH Wildeson, DA Ewoldt, TD Sands, RE Garc\u00eda, EA Stach \"Dislocation Filtering in GaN Nanostructures.\" \u00a0Nano Letters. 10(5): 1568-1573, 2010. Abstract Dislocation filtering in GaN by selective area growth through a nanoporous template is examined both by transmission electron microscopy and numerical modeling. These nanorods grow\u2026","rel":"","context":"In &quot;Papers&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":394,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/10\/31\/gan-nanostructure-design-for-optimal-dislocation-filtering\/","url_meta":{"origin":441,"position":1},"title":"Z Liang, R Colby, IH Wildeson, DA Ewoldt, TD Sands, EA Stach, RE Garc\u00eda &#8220;GaN nanostructure design for optimal dislocation filtering.&#8221;\u00a0Journal of Applied Physics. 108(7):074313, 2010.","date":"10\/31\/2017","format":false,"excerpt":"Z Liang, R Colby, IH Wildeson, DA Ewoldt, TD Sands, EA Stach, RE Garc\u00eda \"GaN nanostructure design for optimal dislocation filtering.\"\u00a0Journal of Applied Physics. 108(7):074313, 2010. Abstract The effect of image forces in GaN pyramidal nanorod structures is investigated to develop dislocation-free light emitting diodes (LEDs). A model based on\u2026","rel":"","context":"In &quot;Papers&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":389,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/10\/31\/iii-nitride-nanopyramid-light-emitting-diodes-grown-by-organometallic-vapor-phase-epitaxy\/","url_meta":{"origin":441,"position":2},"title":"IH Wildeson, R Colby, DA Ewoldt, Z Liang, DN Zakharov, NJ Zaluzec, RE Garc\u00eda, EA Stach, TD Sands &#8220;III-nitride nanopyramid light emitting diodes grown by organometallic vapor phase epitaxy.&#8221;\u00a0Journal of Applied Physics. 108:\u00a0044303, 2010.","date":"10\/31\/2017","format":false,"excerpt":"IH Wildeson, R Colby, DA Ewoldt, Z Liang, DN Zakharov, NJ Zaluzec, RE Garc\u00eda, EA Stach, TD Sands \"III-nitride nanopyramid light emitting diodes grown by organometallic vapor phase epitaxy.\"\u00a0Journal of Applied Physics. 108:\u00a0044303, 2010. Abstract Nanopyramid light emitting diodes (LEDs) have been synthesized by selective area organometallic vapor phase epitaxy.\u2026","rel":"","context":"In &quot;Papers&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":434,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/11\/03\/m-abdul-massih-b-benes-t-zhang-c-platzer-w-leavenworth-h-zhuo-e-garcia-z-liang-augmenting-heteronanostructure-visualization-with-haptic-feedback-advances-in-visual-computing-627-636\/","url_meta":{"origin":441,"position":3},"title":"M. Abdul-Massih, B Bene\u0161, T Zhang, C Platzer, W Leavenworth, H Zhuo, E Garc\u00eda, Z Liang &#8220;Augmenting heteronanostructure visualization with haptic feedback.&#8221;\u00a0Advances in Visual Computing. 627-636, 2011.","date":"11\/03\/2017","format":false,"excerpt":"M. Abdul-Massih, B Bene\u0161, T Zhang, C Platzer, W Leavenworth, H Zhuo, E Garc\u00eda, Z Liang \"Augmenting heteronanostructure visualization with haptic feedback.\"\u00a0Advances in Visual Computing. 627-636, 2011. Abstract We address the need of researchers in nanotechnology who desire an increased level of perceptualization of their simulation data by adding haptic\u2026","rel":"","context":"In &quot;Papers&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":464,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/11\/04\/bj-kim-re-garcia-ea-stach-kinetics-of-congruent-vaporization-of-zno-islands-physical-review-letters-10714146101-2011\/","url_meta":{"origin":441,"position":4},"title":"BJ Kim, RE Garc\u00eda, EA Stach &#8220;Kinetics of Congruent Vaporization of ZnO Islands.&#8221;\u00a0Physical Review Letters. 107(14):146101, 2011.","date":"11\/04\/2017","format":false,"excerpt":"BJ Kim, RE Garc\u00eda, EA Stach \"Kinetics of Congruent Vaporization of ZnO Islands.\"\u00a0Physical Review Letters. 107(14):146101, 2011. Abstract We examine the congruent vaporization of ZnO islands using in\u00a0situ transmission electron microscopy. Correlating quantitative measurements with a theoretical model offers a comprehensive understanding of the equilibrium conditions of the system, including\u2026","rel":"","context":"In &quot;Papers&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":471,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2017\/11\/04\/s-b-lee-ts-key-z-liang-re-garcia-s-wang-x-tricoche-gs-rohrer-y-saito-c-ito-t-tani-microstructure-design-of-lead-free-piezoelectric-ceramics-journal-of-the-european-ceramic-society\/","url_meta":{"origin":441,"position":5},"title":"S-B Lee, TS Key, Z Liang, RE Garc\u00eda, S Wang, X Tricoche, GS Rohrer, Y Saito, C Ito, T Tani &#8220;Microstructure design of lead-free piezoelectric ceramics.&#8221;\u00a0Journal of the European Ceramic Society. 33:313-326, 2013.","date":"11\/04\/2017","format":false,"excerpt":"S-B Lee, TS Key, Z Liang, RE Garc\u00eda, S Wang, X Tricoche, GS Rohrer, Y Saito, C Ito, T Tani \"Microstructure design of lead-free piezoelectric ceramics.\"\u00a0Journal of the European Ceramic Society. 33:313-326, 2013. Abstract Computational and experimental methodologies are integrated into a novel combined technique to define microstructure design criteria\u2026","rel":"","context":"In &quot;Papers&quot;","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/441"}],"collection":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/comments?post=441"}],"version-history":[{"count":1,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/441\/revisions"}],"predecessor-version":[{"id":463,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/441\/revisions\/463"}],"wp:attachment":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media?parent=441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/categories?post=441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/tags?post=441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}