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    Breaking News

    Manufacturing Process Creates Superhydrophobic, Non-Flat Surfaces

    The new process creates super-small channels to repel water and improve medical, electronic, and other devices.

    Manufacturing Process Creates Superhydrophobic, Non-Flat Surfaces
    Purdue University researchers have made new advancements in a manufacturing process they developed that creates super-small channels to repel water and improve medical, electronic, and other devices.
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    Purdue University08.23.19
    Imagine a better windshield that easily repels water and requires less wiping. Now imagine if that same technology could allow doctors to better detect disease or abnormalities in patients.
     
    Purdue University researchers have made new advancements in a manufacturing process they developed that creates super-small channels to repel water and improve medical, electronic, and other devices.
     
    “Our technology provides an innovative way of creating superhydrophobic, or non-water-resistant, non-flat surfaces on metallic and polymer materials,” said Yung Shin, the Donald A. and Nancy G. Roach Professor of Advanced Manufacturing in Purdue’s College of Engineering. “There is no other current technology available for creating internal hydrophobic surfaces for microchannels in a cost-effective way.”
     
    The Purdue method creates small channels where water cannot stick to the surface or gives little resistance in the flow. Water or other liquids can be sent through and create smaller cooling channels and microfluidic devices.
     

    This image shows a water drop on a created superhydrophobic surface, showing a very high contact angle.
    “The technology has many potential applications especially in the biomedical and electronic industries,” Shin said. “It provides more effective cooling options than conventional methods and helps reduce the overall size of biosensors and other medical devices that use circulating fluid to detect unhealthy conditions in a patient.”
     
    Shin said the team also sees applications for the technology and manufacturing process in self-cleaning surfaces, airplane micro hydraulics and windshields.
     
    Shin’s team uses a two-step process to create the superhydrophobic surfaces. First, the researchers create patterns or features on a metal surface with an ultra-fast laser. Then, in a process called transfer molding, the researchers create that same pattern on the polymer.
     
    The team worked with the Purdue Research Foundation Office of Technology Commercialization to patent the device and are seeking additional research partners. For more information, contact otcip@prf.org.
     
    The technology and research aligns with Purdue's Giant Leaps celebration of the university’s global advancements made in health and sustainability as part of Purdue’s 150th anniversary. Those are two of the four themes of the yearlong celebration’s Ideas Festival, designed to showcase Purdue as an intellectual center solving real-world issues.
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