{"id":514,"date":"2025-09-15T06:55:29","date_gmt":"2025-09-15T06:55:29","guid":{"rendered":"https:\/\/microfluidics.creative-biolabs.com\/blog\/?p=514"},"modified":"2025-09-15T06:55:29","modified_gmt":"2025-09-15T06:55:29","slug":"low-cost-polymer-microfluidic-chip-processing-technology","status":"publish","type":"post","link":"https:\/\/microfluidics.creative-biolabs.com\/blog\/low-cost-polymer-microfluidic-chip-processing-technology\/","title":{"rendered":"Low-Cost Polymer Microfluidic Chip Processing Technology"},"content":{"rendered":"

Microfluidics technology<\/u><\/a>\u00a0emerged\u00a0in the early 1990s from research on microfluidic manipulation using micro-electro-mechanical system (MEMS). Over the past decades, advancements in\u00a0analytical chemistry and life sciences have expanded the applications of\u00a0microfluidic chip<\/u><\/a>\u00a0systems to\u00a0nanofiber synthesis, nanocomposite fabrication, quantum dot synthesis, micro-nanoparticle preparation, electrochemical sensors, biochemical sensors, cell biology, and molecular analysis.<\/span><\/p>\n

Microfluidics technology enables the integration of complex chemical or biological analytical processes into a single chip, creating a micrototal analysis system (\u03bcTAS), also known as a lab-on-a-chip.<\/span><\/p>\n

Initial\u00a0microfluidic chip fabrication<\/u><\/a>\u00a0relied fuly on\u00a0MEMS techniques, which required\u00a0all processing in clean rooms with precision micromachining tools. These costly design and processing requirements\u00a0significantly limited adoption in\u00a0analytical chemistry and life sciences. Standardized glass or polymer microfluidic chips from certain\u00a0European and American companies still cost tens to hundreds of dollars each, restricting\u00a0their use and commercialization\u00a0in biology, chemistry, and medicine.<\/span><\/p>\n

Recently, experts\u00a0in mechanics, electronics, chemistry, and biology. have developed\u00a0and utilized\u00a0diverse\u00a0low-cost micromachining methods based on their specialized knowledge\u00a0and experience.<\/span><\/p>\n

Processing <\/b><\/strong>M<\/b><\/strong>aterials for <\/b><\/strong>L<\/b><\/strong>ow-<\/b><\/strong>C<\/b><\/strong>ost <\/b><\/strong>M<\/b><\/strong>icrofluidic <\/b><\/strong>C<\/b><\/strong>hips<\/b><\/strong><\/span><\/p>\n

Silicon <\/u><\/a>and glass were the earliest substrate materials used in microfluidic chips, primarily because their processing methods can be directly applied to those used in MEMS and microelectronics. However, due to their high cost and difficulty in processing, these materials were quickly replaced by lower-cost materials, such as various polymers, during the development of microfluidic chips. Existing microfluidic chip processing methods offer a wide range of low-cost materials, including various elastomers, thermoplastic polymers, thermosetting polymers, paper, and biomaterials. This article will discuss common materials suitable for low-cost microfluidic chip processing, categorized as polymers, paper, and other materials.<\/span><\/p>\n

P<\/b><\/u><\/strong>olymer <\/b><\/u><\/strong>M<\/b><\/u><\/strong>aterials<\/b><\/u><\/strong><\/a><\/span><\/p>\n

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  1. Elastomeric Materials<\/span><\/li>\n<\/ol>\n

    Elastomeric materials refer to polymeric materials that can undergo significant deformation under weak stress and quickly recover to a near-original state and size after stress relaxation. Polydimethylsiloxane (PDMS)<\/u><\/a>\u00a0is currently the most widely used elastomer material in microfluidic chips. The use of PDMS in microfluidic chips was first proposed by Whitesides et al. in 1998. PDMS offers advantages such as low cost, optical transparency, good biocompatibility, and moderate breathability, making it an ideal material for low-cost microfluidic chips. In microfluidic chip fabrication, PDMS is often molded to create microstructures on its surface, with mold accuracy even reaching the nanometer level. However, PDMS also has disadvantages such as easy deformation and collapse of channels and a small amount of absorption of fluid within the channels.<\/span><\/p>\n

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    1. Thermoplastics<\/span><\/li>\n<\/ol>\n

      Thermoplastics<\/u><\/a>\u00a0are among the most common and widely used materials in everyday life. They are very inexpensive and can be shaped after softening under certain temperature conditions. A wide variety of thermoplastic materials can be used for low-cost microfluidic chips, including polymethyl methacrylate (PMMA), polystyrene (PS), cyclic olefin copolymer (COC), polycarbonate (PC), polyethylene terephthalate (PET), and polyvinyl chloride (PVC).<\/span><\/p>\n