{"id":308036,"date":"2023-09-22T08:23:03","date_gmt":"2023-09-22T08:23:03","guid":{"rendered":"\/forum\/?post_type=topic&#038;p=308036"},"modified":"2023-09-22T08:23:03","modified_gmt":"2023-09-22T08:23:03","slug":"how-to-define-a-structure-based-on-coordinate-points","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-define-a-structure-based-on-coordinate-points\/","title":{"rendered":"How to define a structure based on coordinate points\uff1f"},"content":{"rendered":"<p>Hello! I am trying to design a device using inverse design, But it seems necessary to use this command (define the n on each coordinate points) to define the structure\uff1a<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/09\/22-09-2023-1695368465-mceclip0.png\"><\/p>\n<p>But our commonly used structural definition is based on coordinate intervals, as shown in the following picture, which specifies the start and stop point of the X coordinate:<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/09\/22-09-2023-1695369564-mceclip2.png\"><\/p>\n<p style=\"text-align: left\">so the question here is, how to define the refractive index n when the coordinate point is on the interface between two materials?<\/p>\n<p style=\"text-align: left\">I tried a simple example here:<\/p>\n<p style=\"text-align: left\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/09\/22-09-2023-1695369917-mceclip3.png\"><\/p>\n<p style=\"text-align: left\">as you can see, I set four 1*1&mu;m rectangles leaning together under 0.1&mu;m mesh (Red-Si, White-SiO2). I set a index monitor to observe the data recorded by it. The data is a 21*21 matrix, so I think the refractive index is not recorded within each grid, but at each grid endpoint.<\/p>\n<p style=\"text-align: left\">So here you can see in the 11th column (the interface between Si and SiO2) of the matrix, refractive index is 1.46. Does that means when we define the n on the interface between two kinds of materials, we use the smaller value?<\/p>\n<p style=\"text-align: left\">Looking forward to your reply!<\/p>\n","protected":false},"template":"","class_list":["post-308036","topic","type-topic","status-closed","hentry","topic-tag-3DFDTD-1","topic-tag-inverse-design-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["23.206.193.146"],"_bbp_subscription":["294042","2592"],"_btv_view_count":["288"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["308036"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","294042"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["308158"],"_bbp_last_active_id":["308158"],"_bbp_last_active_time":["2023-09-22 19:00:36"]},"test":"14021025buaa-edu-cn"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/308036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/308036\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=308036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}