{"id":4841,"date":"2021-11-15T16:36:55","date_gmt":"2021-11-15T08:36:55","guid":{"rendered":"http:\/\/43.135.177.8\/?p=4841"},"modified":"2021-11-15T16:39:58","modified_gmt":"2021-11-15T08:39:58","slug":"biomimetic-apposition-compound-eye-fabricated-using-microfluidic-assisted-3d-printing","status":"publish","type":"post","link":"https:\/\/whmicro.com\/?p=4841","title":{"rendered":"Biomimetic apposition compound eye fabricated using microfluidic-assisted 3D printing"},"content":{"rendered":"

[vc_row rt_row_background_width=”default” rt_row_style=”default-style” rt_row_borders=”” rt_row_paddings=”true” rt_bg_effect=”classic” rt_bg_image_repeat=”repeat” rt_bg_size=”cover” rt_bg_position=”right top” rt_bg_attachment=”scroll” rt_bg_video_format=”self-hosted”][vc_column width=”4\/5″ rt_wrp_col_paddings=”false” rt_border_top=”” rt_border_bottom=”” rt_border_left=”” rt_border_right=”” rt_border_top_mobile=”” rt_border_bottom_mobile=”” rt_border_left_mobile=”” rt_border_right_mobile=”” rt_bg_image_repeat=”repeat” rt_bg_size=”auto auto” rt_bg_position=”right top” rt_bg_attachment=”scroll”][vc_column_text]<\/p>\n

Fabrication of the 3D BAC-eye<\/h3>\n

The design of the 3D BAC-eye follows the anatomical structure of an apposition compound eye (Fig.\u00a01a<\/a>). Each microlens on the BAC-eye has the same function as the corneal facet lens of a natural eye. The cylindrical post and the silicone-elastomer waveguide function as a crystalline cone and a rhabdom, respectively (Fig.\u00a01b<\/a>). The internal structure of the artificial eye mimics the function of pigment cells to reduce optical crosstalk. The number of ommatidia in the BAC-eye (522) is comparable with that of bark beetles (Dendroctonus rufipennis<\/i>, average count: 272;\u00a0Dendroctonus valens<\/i>, average count: 372), ants (Temnothorax albipennis<\/i>, average count: 300 (male) and 171 (queens);\u00a0Brachyponera chinensis<\/i>, average count: 168 (worker) (Fig.\u00a01c<\/a>)), and fruit flies (Drosophila melanogaster<\/i>, average count: 730)47<\/a>,48<\/a>,49<\/a><\/sup>. Figure\u00a01d<\/a>\u00a0shows a top-view SEM image of the BAC-eye. It has a radius of 2.5\u2009mm and its microlenses are hexagonally and omnidirectionally distributed across the hemispherical dome. The most peripheral ommatidia are oriented at \u00b185\u00b0 with respect to the vertical axis, extending the viewing angle of the BAC-eye to 170\u00b0.<\/p>\n

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Fig. 1: Illustrations of the fabrication procedure and images of the BAC-eye.<\/b><\/figcaption>
\n
\"figure1\"<\/picture><\/a><\/div>\n
\n

a<\/b>\u00a0Anatomical structure of an arthropod compound eye.\u00a0b<\/b>\u00a0Labelled cross section of a BAC-eye.\u00a0c<\/b>\u00a0SEM image of a compound eye of the Asian needle ant,\u00a0Brachyponera chinensis<\/i>.\u00a0d<\/b>\u00a0SEM image of a BAC-eye.\u00a0e<\/b>\u00a0Illustration of the main steps of the fabrication procedure. The BAC-eye is produced in a hemispherical substrate by casting it in a prepared mould.\u00a0f<\/b>\u00a0Image of the 3D-printed mould.\u00a0g<\/b>\u00a0The 3D-printed substrate and a quarter sectional slice of the substrate.\u00a0h<\/b>\u00a0Image of a BAC-eye after release from the mould.\u00a0i<\/b> A view showing the flat bottom of the BAC-eye.<\/p>\n<\/div>\n<\/div>\n

Full size image<\/div>\n<\/figure>\n
Please refer to the original article:<\/a><\/div>\n<\/div>\n

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The design of the 3D BAC-eye follows the anatomical structure of an apposition compound eye (Fig.\u00a01a). Each microlens on the BAC-eye has the same function as the corneal facet lens of a natural eye.<\/p>\n","protected":false},"author":1,"featured_media":4843,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[100],"yoast_head":"\nBiomimetic apposition compound eye fabricated using microfluidic-assisted 3D printing - WenHao<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/whmicro.com\/?p=4841\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Biomimetic apposition compound eye fabricated using microfluidic-assisted 3D printing - WenHao\" \/>\n<meta property=\"og:description\" content=\"The design of the 3D BAC-eye follows the anatomical structure of an apposition compound eye (Fig.\u00a01a). 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