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120 SMT007 MAGAZINE I JULY 2019 90 leading electronics manufacturers, suppli- ers, associations, government agencies, and universities. iNEMI is hosting a meeting at SEMICON West July 9 from 10:00 a.m. to noon at the Moscone Convention Center (San Fran- cisco). This meeting will highlight iNEMI's Roadmap and include a brainstorming session on potential new projects in the areas of back- end commonality (packaging, inspection, test, and more). Brainstorming topics to include advanced packaging, media, tools optimiza- tion, data analytics, etc. Confirmed attendees include Intel, AMD, Rudolph, KNS, Cimetrix, Jabil, ASM, SEMI, and others. SMT007 References 1. Moyne, J., & Iskandar, J. "Big Data Analytics for Smart Manufacturing: Case Studies in Semiconductor Manufac- turing," Processes Journal, Vol. 5, No. 3, July 2017. Ranjan Chatterjee is vice president and general manager, smart factory solutions, for Cimetrix, and Dan Gamota is vice presi- dent, manufacturing technology and inno- vation, for Jabil. They are co-chairs of the new smart manufacturing chapter of the 2019 iNEMI Roadmap, which will go on sale this summer. Chatterjee Gamota Finding the best way to stick wearable electronics to the body has been a challenge. But a team of research- ers has developed a graphene-based adhesive biosensor inspired by octopus "suckers." For a wearable sensor to be truly effective, it must be flexible and adhere fully to both wet and dry skin but still remain comfortable for the user. Thus, the choice of sub- strate—the material that the sensing compounds rest upon—is crucial. Woven yarn is a popular substrate, but it sometimes doesn't fully contact the skin, especially if that skin is hairy. Typical yarns and threads are also vul- nerable to wet environments. To overcome these challenges, Changhyun Pang, Changsoon Choi, and colleagues worked to develop a low- cost, graphene-based sensor with a yarn-like substrate that uses octopus-like suckers to adhere to the skin. The researchers coated an elastic polyurethane and polyester fabric with graphene oxide and soaked in L-ascorbic acid to aid in conductivity while still retain- ing its strength and stretch. From there, they added a coating of a graphene and poly(dimethylsiloxane) (PDMS) film to form a conductive path from the fabric to the skin. Finally, they etched tiny, octopus-like patterns on the film. The sensor could detect a wide range of pres- sures and motions in both wet and dry environments. The device also could monitor an array of human activities—including elec- trocardiogram signals, pulse, and speech patterns—demonstrating its potential use in medical appli- cations, the researchers say. The research is published in ACS Applied Materials & Interfaces. (Source: ACS Applied Materials & Interfaces) Octopus-inspired Wearable Sensor

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