{"id":191,"date":"2017-08-24T09:37:08","date_gmt":"2017-08-24T01:37:08","guid":{"rendered":"http:\/\/sheng.people.ust.hk\/?p=191"},"modified":"2017-09-13T00:31:10","modified_gmt":"2017-09-12T16:31:10","slug":"composites-and-porous-media","status":"publish","type":"post","link":"http:\/\/sheng.people.ust.hk\/?p=191","title":{"rendered":"Composites and porous media"},"content":{"rendered":"<ul>\n<li>Proposed the mechanisms of fluctuation-induced tunneling and structure-correlated hopping that led to the explanation of electrical conduction behaviors in diverse disordered systems such as conducting polymers, carbon-black composites, granular metals, etc.<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<p><strong>Key publications:<\/strong><\/p>\n<ol>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Hopping-Conductivity-in-Granular-Metals.pdf\">Hopping Conductivity in Granular Metals<\/a><\/strong>&#8220;, Ping Sheng, B. Abeles and Y. Arie, <em>Phys. Rev. Lett.<\/em> 31, 44 (1973).<\/li>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Fluctuation-Induced-Tunneling-Conduction-in-Carbon-Polyvinylchloride-Composites.pdf\">Fluctuation-Induced Tunneling Conduction in Carbon-Polyvinylchloride Composites<\/a><\/strong>&#8220;, Ping Sheng, E. K. Sichel and J. Gittleman,<em> Phys. Rev. Lett.<\/em> 40, 1197 (1978).<\/li>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Fluctuation-Induced-Tunneling-Conduction-in-Disordered-Materials.pdf\">Fluctuation-Induced Tunneling Conduction in Disordered Materials<\/a><\/strong>&#8220;, Ping Sheng, <em>Phys. Rev. B<\/em>21, 2180 (1980).<\/li>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Electronic-Transport-in-Granular-Metal-Films.pdf\">Electronic Transport in Granular Metal Films<\/a><\/strong>&#8220;, Ping Sheng, Feature Article, <em>Philos. Mag.<\/em> B65, 357 (1992).<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Proposed effective medium theories that give microstructure-based explanations to observed optical, electrical, and elastic properties of composites, with granular metals and sedimentary rocks in particular.<\/li>\n<\/ul>\n<p><strong>Key publications:<\/strong><\/p>\n<ol>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Theory-for-the-Dielectric-Function-of-Granular-Composite-Media-1.pdf\">Theory for the Dielectric Function of Granular Composite Media<\/a><\/strong>&#8220;, Ping Sheng, <em>Phys. Rev. Lett.<\/em> 45, 60 (1980).<\/li>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Effective-Medium-Theory-of-Sedimentary-Rocks.pdf\">Effective-Medium Theory of Sedimentary Rocks<\/a><\/strong>&#8220;, Ping Sheng, <em>Phys. Rev. B<\/em>4l, 4507 (1990).<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Found a two-parameter universal scaling solution for the dynamic (fluid) permeability function in porous media with arbitrary microstructures.<\/li>\n<\/ul>\n<p><strong>Key publications:<\/strong><\/p>\n<ol>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Dynamic-Permeability-in-Porous-Media.pdf\">Dynamic Permeability in Porous Media<\/a><\/strong>&#8220;, Ping Sheng and M. Y. Zhou, <em>Phys. Rev. Lett.<\/em> 61, 1591 (1988).<\/li>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/First-Principles-Calculations-of-Dynamic-Permeability-in-Porous-media.pdf\">First-Principles Calculations of Dynamic Permeability in Porous media<\/a><\/strong>&#8220;, M. Y. Zhou and Ping Sheng, <em>Phys. Rev. B<\/em>39, 12027 (1989).<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ul>\n<li>Uncovered the bimodal nature of the local field distribution in disordered systems.<\/li>\n<\/ul>\n<p><strong>Key publication:<\/strong><\/p>\n<ol>\n<li>&#8220;<strong><a style=\"color: #1252ba;\" href=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Local-Field-Distribution-in-Random-Dielectric-Media.pdf\">Local-Field Distribution in Random Dielectric Media<\/a><\/strong>&#8220;, Ping Sheng and Z. Chen, <em>Phys. Rev. Lett.<\/em> 60, 227 (1988).<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_192\" aria-describedby=\"caption-attachment-192\" style=\"width: 660px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"size-large wp-image-192\" src=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Composites-and-porous-media-1024x461.jpg\" alt=\"\" width=\"660\" height=\"297\" srcset=\"http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Composites-and-porous-media-1024x461.jpg 1024w, http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Composites-and-porous-media-300x135.jpg 300w, http:\/\/sheng.people.ust.hk\/wp-content\/uploads\/2017\/08\/Composites-and-porous-media-768x346.jpg 768w\" sizes=\"(max-width: 660px) 100vw, 660px\" \/><figcaption id=\"caption-attachment-192\" class=\"wp-caption-text\">(a) Schematic depiction of the dispersed-inclusion microstructure. The dashed line delineates a basic structural unit for the composite. (b) Schematic depiction of the symmetric microstructure. Depending on the relative volume fraction of the two components, either component can be the matrix phase.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Proposed the mechanisms of fluctuation-induced tunneling and structure-correlated hopping that led to the explanation of electrical conduction behaviors in diverse disordered systems such as conducting polymers, carbon-black composites, granular metals, etc.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=\/wp\/v2\/posts\/191"}],"collection":[{"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=191"}],"version-history":[{"count":9,"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=\/wp\/v2\/posts\/191\/revisions"}],"predecessor-version":[{"id":995,"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=\/wp\/v2\/posts\/191\/revisions\/995"}],"wp:attachment":[{"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=191"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sheng.people.ust.hk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}