{"id":421,"date":"2021-11-02T18:15:36","date_gmt":"2021-11-02T10:15:36","guid":{"rendered":"http:\/\/zt1.com\/?p=421"},"modified":"2025-02-24T10:03:12","modified_gmt":"2025-02-24T02:03:12","slug":"su8%e6%a8%a1%e5%85%b7","status":"publish","type":"post","link":"https:\/\/www.dxfluidics.com\/en\/technical-support\/process-introduction\/421\/su8%e6%a8%a1%e5%85%b7\/","title":{"rendered":"SU-8 Molds\/PDMS Chip Molds"},"content":{"rendered":"<p class=\"wp-block-paragraph\">SU-8 is a high-resolution negative photoresist known for its outstanding mechanical, dielectric, chemical resistance, and thermal properties, as well as excellent biocompatibility. In the field of microfluidics, it is commonly used to fabricate molds for preparing PDMS microfluidic chips.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Molds prepared with SU-8 offer the following advantages:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 High resolution and precision: SU-8 is a high-resolution photoresist, allowing the fabrication of complex and intricate microchannel geometries through photolithography. This results in well-defined microfluidic structures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2 Tough and durable: SU-8 molds exhibit toughness and durability, enduring repeated use, cleaning, and handling without significant degradation. They are suitable for multiple PDMS chip castings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph translation-block\">3 SU8 molds, created using photolithography, can produce line widths greater than 2 micrometers on PDMS chip molds prepared with SU-8 photoresist. Achieving aspect ratios in the range of 1:1 to 2:1 is possible. Additionally, employing multilayer photolithography techniques allows the creation of microchannel structures with different heights on SU-8 molds.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" data-id=\"1310\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/0-PDMS\u82af\u7247\u6a21\u5177-1.png\" alt=\"\" class=\"wp-image-1310\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" data-id=\"1312\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/0-PDMS\u82af\u7247\u6a21\u5177-2.png\" alt=\"\" class=\"wp-image-1312\"\/><\/figure>\n<\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/www.dxfluidics.com\/en\/technical-support\/information\/1251\/su8\u6a21\u5177\u52a0\u5de5\u5e73\u53f0\/\" data-type=\"link\" data-id=\"https:\/\/www.dxfluidics.com\/equipment\/1251\/\">Equipment for Fabricating SU8 Molds<\/a><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.dxfluidics.com\/en\/technical-support\/information\/1251\/su8\u6a21\u5177\u52a0\u5de5\u5e73\u53f0\/\"><img loading=\"lazy\" decoding=\"async\" width=\"939\" height=\"363\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/image-16.png\" alt=\"SU-8 Molds\/PDMS Chip Molds\" title=\"SU-8 Molds\/PDMS Chip Molds\" class=\"wp-image-1238\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/image-16.png 939w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/image-16-600x232.png 600w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/image-16-768x297.png 768w\" sizes=\"auto, (max-width: 939px) 100vw, 939px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For more details, please click on<a href=\"https:\/\/www.dxfluidics.com\/en\/technical-support\/information\/1251\/su8\u6a21\u5177\u52a0\u5de5\u5e73\u53f0\/\" data-type=\"link\" data-id=\"https:\/\/www.dxfluidics.com\/equipment\/1251\/\">SU-8 Processing Equipment<\/a>to learn more<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SU-8 Mold Preparation Process:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">I. Substrate Preparation<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Retrieve a clean silicon wafer from the chemical storage area, ensuring the wafer's surface is dust-free.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"241\" height=\"220\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-11.png\" alt=\"\" class=\"wp-image-1817\" style=\"width:206px;height:auto\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-11.png 241w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-11-13x12.png 13w\" sizes=\"auto, (max-width: 241px) 100vw, 241px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">II. Spin Coating<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\uff09Turn on the spin coater, place the silicon wafer on the spin coater chuck, and activate the vacuum switch to secure the wafer in place.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"269\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-12.png\" alt=\"\" class=\"wp-image-1818\" style=\"width:175px;height:auto\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-12.png 200w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-12-9x12.png 9w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">2\uff09Dispense SU-8 photoresist onto the center of the wafer. Set the spin coater speed and time based on the desired photoresist thickness and fabrication requirements. (Example: Target thickness of 50 \u03bcm, SU8-2075, 1st step: 500 rpm for 8 s, 2nd step: 1800 rpm for 30 s)<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"253\" height=\"225\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-13.png\" alt=\"\" class=\"wp-image-1819\" style=\"width:199px;height:auto\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-13.png 253w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-13-13x12.png 13w\" sizes=\"auto, (max-width: 253px) 100vw, 253px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">III. Soft Bake<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Place the coated silicon wafer on a hotplate for a pre-bake to remove volatile organic solvents from the photoresist. Adjust time and temperature according to the photoresist thickness. (Example: Target thickness of 50 \u03bcm, set temperature to 65\u00b0C, bake for 15 min, then raise temperature to 95\u00b0C, and bake for an additional 15 min)<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"313\" height=\"308\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-14.png\" alt=\"\" class=\"wp-image-1820\" style=\"width:215px;height:auto\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-14.png 313w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-14-12x12.png 12w\" sizes=\"auto, (max-width: 313px) 100vw, 313px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">IV. Exposure<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\uff09Place the pre-baked silicon wafer on the tabletop mask aligner tray.<\/p>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"312\" height=\"229\" data-id=\"1826\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-18.png\" alt=\"\" class=\"wp-image-1826\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-18.png 312w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-18-16x12.png 16w\" sizes=\"auto, (max-width: 312px) 100vw, 312px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"266\" data-id=\"1821\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-15.png\" alt=\"\" class=\"wp-image-1821\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-15.png 290w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-15-13x12.png 13w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" data-id=\"1323\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/09\/1-\u8bbe\u5907-\u5149\u523b\u673a.png\" alt=\"\" class=\"wp-image-1323\"\/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2\uff09Expose the wafer using an appropriate mask. Adjust exposure time and intensity based on the type and thickness of SU-8 photoresist. (Example: Target thickness of 50 \u03bcm, set exposure energy to 25 mW\/cm2, exposure time of 12 s)<sup>2<\/sup>\uff0c\u65f6\u95f412s\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V. Post-Bake<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Place the exposed silicon wafer on a hotplate for post-exposure baking to ensure completion of the cross-linking reaction in the photoresist. (Example: Target thickness of 50 \u03bcm, set temperature to 65\u00b0C, bake for 7 min, then raise temperature to 95\u00b0C, and bake for an additional 3 min)<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"258\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-16.png\" alt=\"\" class=\"wp-image-1822\" style=\"width:204px;height:auto\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-16.png 258w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-16-100x100.png 100w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-16-12x12.png 12w\" sizes=\"auto, (max-width: 258px) 100vw, 258px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">VI. Development<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Immerse the wafer in a developer solution to dissolve the unexposed portion of the photoresist, forming the pattern of the mold. (Adjust development time based on photoresist thickness and developer concentration; example: development time of 20 min)<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"421\" height=\"287\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-17.png\" alt=\"\" class=\"wp-image-1823\" style=\"width:295px;height:auto\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-17.png 421w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/02\/image-17-18x12.png 18w\" sizes=\"auto, (max-width: 421px) 100vw, 421px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">VII. Cleaning<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Clean the developed wafer with isopropanol solvent to remove excess photoresist.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VIII. Inspection<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use a microscope to inspect the prepared SU-8 mold, checking the dimensions of the microstructures, and confirming the clarity and quality of the pattern.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-pale-cyan-blue-background-color has-background has-medium-font-size\">Ordering Methods<\/h3>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"140\" height=\"140\" data-id=\"1378\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/10\/image-26.png\" alt=\"\" class=\"wp-image-1378\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/10\/image-26.png 140w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/10\/image-26-100x100.png 100w\" sizes=\"auto, (max-width: 140px) 100vw, 140px\" \/><figcaption class=\"wp-element-caption\">Taobao store<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"396\" height=\"396\" data-id=\"1142\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/06\/image.png\" alt=\"\" class=\"wp-image-1142\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/06\/image.png 396w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/06\/image-300x300.png 300w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2023\/06\/image-100x100.png 100w\" sizes=\"auto, (max-width: 396px) 100vw, 396px\" \/><figcaption class=\"wp-element-caption\">Wechat\uff08TEL:18112558497)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"720\" data-id=\"1599\" src=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/01\/R.jpg\" alt=\"\" class=\"wp-image-1599\" srcset=\"https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/01\/R.jpg 900w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/01\/R-600x480.jpg 600w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/01\/R-768x614.jpg 768w, https:\/\/www.dxfluidics.com\/wp-content\/uploads\/2024\/01\/R-15x12.jpg 15w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><figcaption class=\"wp-element-caption\">   E-mail\uff1asale@dxfluidics.com<\/figcaption><\/figure>\n<\/figure>","protected":false},"excerpt":{"rendered":"<p>SU-8\u662f\u4e00\u79cd\u9ad8\u5206\u8fa8\u7387\u7684\u8d1f\u6027\u5149\u523b\u80f6\uff0c\u62e5\u6709\u5353\u8d8a\u7684\u673a\u68b0\u3001\u4ecb\u7535\u3001\u8010\u5316\u5b66\u6027\u548c\u70ed\u6027\u80fd\uff0c\u4ee5\u53ca\u51fa\u8272\u7684\u751f\u7269\u76f8\u5bb9\u6027\u3002\u5728\u5fae\u6d41\u63a7\u9886\u57df [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1297,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[89],"tags":[],"class_list":["post-421","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-process-introduction"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SU8\u6a21\u5177\/PDMS\u82af\u7247\u6a21\u5177 - \u9876\u65ed\u5fae\u63a7<\/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:\/\/www.dxfluidics.com\/en\/technical-support\/process-introduction\/421\/su8\u6a21\u5177\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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