{"id":52,"date":"2020-01-09T19:41:38","date_gmt":"2020-01-09T19:41:38","guid":{"rendered":"http:\/\/newatao.ucsd.edu\/?page_id=52"},"modified":"2023-10-19T21:49:11","modified_gmt":"2023-10-19T21:49:11","slug":"research","status":"publish","type":"page","link":"https:\/\/atao.ucsd.edu\/?page_id=52","title":{"rendered":"Research"},"content":{"rendered":"\n<p class=\"has-text-color has-background has-white-color has-blue-background-color\"><strong><em>We seek to change the way inorganic nanomaterials are designed for applications ranging from sensors to circuits. <\/em><br><\/strong><\/p>\n\n\n\n<p class=\"has-background has-light-gray-background-color\"><strong>Rational Synthesis of Shaped Nanocrystals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"882\" src=\"http:\/\/newatao.ucsd.edu\/wp-content\/uploads\/2020\/01\/toc-1024x882.png\" alt=\"\" data-id=\"117\" data-link=\"http:\/\/newatao.ucsd.edu\/?attachment_id=117\" class=\"wp-image-117\" srcset=\"https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/toc-1024x882.png 1024w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/toc-300x259.png 300w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/toc-768x662.png 768w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/toc-348x300.png 348w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/toc.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/newatao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pbsc182-decomp_7-1-1024x1024.png\" alt=\"\" data-id=\"118\" data-link=\"http:\/\/newatao.ucsd.edu\/?attachment_id=118\" class=\"wp-image-118\" srcset=\"https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pbsc182-decomp_7-1-1024x1024.png 1024w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pbsc182-decomp_7-1-150x150.png 150w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pbsc182-decomp_7-1-300x300.png 300w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pbsc182-decomp_7-1-768x768.png 768w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pbsc182-decomp_7-1.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><\/ul>\n\n\n<p>We seek to understand the chemical mechanism behind the nucleation and growth of inorganic nanocrystals, including metals, semicondcutors, and biominerals. This has included probing the role of halide anions and polymers in directing the selective growth of low-energy Ag facets. More recently, our lab discovered a new synthetic pathway for achieving low-dimensional semiconductor nanocrystals through the synthesis of single-source metal-organic liquid crystals (MOLCs).<\/p>\n<p><em>Recent publications in this area:<\/em><\/p>\n<ul id=\"mce_43\" class=\"editor-rich-text__tinymce mce-content-body\" role=\"textbox\" contenteditable=\"true\" aria-label=\"Write list\u2026\" aria-autocomplete=\"list\" aria-multiline=\"true\" data-is-placeholder-visible=\"false\">\n<li><a href=\"https:\/\/doi.org\/10.1021\/acs.chemmater.5b01223\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Chem of Mater.<\/em>, 27, 4957\u20134963 (2015)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/acs.chemmater.8b01166\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Chem. of Mater.<\/em>, 30, 14, 4617\u20134623 (2018)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/ja500786p\" target=\"_blank\" rel=\"noopener noreferrer\"><em>JACS<\/em>, 136, 6175\u20136178 (2014)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/acs.langmuir.8b01043\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Langmuir<\/em> ASAP (2018)<\/a><\/li>\n<\/ul>\n<p><!--EndFragment--><\/p>\n\n\n<p class=\"has-background has-light-gray-background-color\"><strong>Self-Assembly of Inorganic Nanocrystals <\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" width=\"550\" height=\"321\" src=\"http:\/\/newatao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pub21.png\" alt=\"\" class=\"wp-image-121\" srcset=\"https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pub21.png 550w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pub21-300x175.png 300w, https:\/\/atao.ucsd.edu\/wp-content\/uploads\/2020\/01\/pub21-500x292.png 500w\" sizes=\"(max-width: 550px) 100vw, 550px\" \/><\/figure>\n\n\n<p>We are interested in deciphering and exploiting the role of nanocrystal shape in regulating materials self-assembly, namely for the fabrication of metamaterials and plasmonics. Previously, we demonstrated that shaped inorganic nanocrystals orient into clusters and networks when surface-modified with polymer ligands. This concept of self-orientation has become a powerful design tool for building functional plasmonic nanocomposites and platforms for enhanced spectroscopies\/chemical sensing.<\/p>\n<p><em>Recent publications in this area:<\/em><\/p>\n<ul id=\"mce_45\" class=\"editor-rich-text__tinymce mce-content-body\" role=\"textbox\" contenteditable=\"true\" aria-label=\"Write list\u2026\" aria-autocomplete=\"list\" aria-multiline=\"true\" data-is-placeholder-visible=\"false\">\n<li><a href=\"https:\/\/doi.org\/10.1038\/nnano.2012.83\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Nature Nanotechnology,<\/em> 7, 433\u2013437 (2012)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1038\/ncomms8325\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Nature Communications<\/em>, 6, 7325 (2015)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1038\/s41566-018-0216-2\"><em>Nature Photonic<\/em>s 12, 485-488 (2018)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/acs.chemrev.7b00364\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Chemical Reviews<\/em>, 118, 3100-3120 (2018)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/acsnano.6b02403\" target=\"_blank\" rel=\"noopener noreferrer\"><em>ACS Nano<\/em>, 10 (8), 7523\u20137531 (2016)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1002\/adfm.201803019\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Advanced Functional Materials<\/em>, 1803019 (2018)<\/a><\/li>\n<\/ul>\n\n\n<p class=\"has-background has-light-gray-background-color\"> <strong>Metal Chalcogenide Nanocrystals for Plasmonics<\/strong> <\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/newatao.ucsd.edu\/wp-content\/uploads\/2020\/01\/la-2018-01043t_0004-1.gif\" alt=\"\" class=\"wp-image-135\" width=\"264\" height=\"281\"\/><\/figure>\n\n\n<p>We utilize chemical synthesis as a powerful fabrication \u201ctool\u201d for generating nanomaterials (namely metal chalcogenide nanoparticles) with optical resonances in the infrared range. Our work on copper sulfide nanodisks was the first in the field to explore the shape-dependent optical resonances for semiconductor nanocrystals. We demonstrated the synthesis of colloidal copper sulfide nanodisks with a wide range of carrier densities and provided the first demonstration of plasmonic coupling between semiconductor nanocrystals. Our lab is currently working toward understanding the phenomenon of plasmon-exciton coupling in these nanomaterials, and the effects of coupling on nonlinear optical properties.<\/p>\n<p><em>Recent publications in this area:<\/em><\/p>\n<ul class=\"rich-text block-editor-rich-text__editable\" role=\"textbox\" contenteditable=\"true\" aria-multiline=\"true\" aria-label=\"Write list\u2026\">\n<li><a href=\"https:\/\/doi.org\/10.1021\/ja2089876\" target=\"_blank\" rel=\"noopener noreferrer\"><em>JACS<\/em>, 133, 19072-19075 (2011)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/cm302363x\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Chemistry of Materials<\/em>, 24, 3765\u20133771 (2012)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/nl404777h\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Nano Letters<\/em>, 14, 2372\u20132380 (2014)<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/acs.jpcc.6b08905\" target=\"_blank\" rel=\"noopener noreferrer\"><em>JPCC<\/em> 121.6 (2017): 3496-3502<\/a><\/li>\n<li><a href=\"https:\/\/doi.org\/10.1021\/acsphotonics.6b00037\" target=\"_blank\" rel=\"noopener noreferrer\"><em>ACS Photonics, <\/em>3, 4, 526-531 (2016)<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>We seek to change the way inorganic nanomaterials are designed for applications ranging from sensors to circuits. Rational Synthesis of Shaped Nanocrystals We seek to understand the chemical mechanism behind the nucleation and growth of inorganic nanocrystals, including metals, semicondcutors, &hellip; <a href=\"https:\/\/atao.ucsd.edu\/?page_id=52\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-52","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=\/wp\/v2\/pages\/52","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=52"}],"version-history":[{"count":12,"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=\/wp\/v2\/pages\/52\/revisions"}],"predecessor-version":[{"id":422,"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=\/wp\/v2\/pages\/52\/revisions\/422"}],"wp:attachment":[{"href":"https:\/\/atao.ucsd.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}