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IISER-Kolkata Develops New Technology For Printing Electronics

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Scientists at IISER Kolkata have developed a new technology for printing flexible electronics – such as radio frequency identification devices or RFID tags.

These RFID tags are used to unlock hotel rooms or smart windows in planes.

Meeting the growing demand for printed, flexible electronics, a team of researchers at IISER-Kolkata has developed a technique that uses laser driven micro-bubbles to literally “write” or pattern on transparent surfaces.

Printed electronics is one of the fastest growing areas in the electronics industry primarily due to its very low cost and flexibility.

These electronics are based on materials called conducting polymers, plastic or resin surfaces, which need to be “doped” or laced with synthetic materials to enhance conductivity.

The process of synthesis, doping, and patterning/lithography for designing circuits is mostly separate, and often complex and time consuming.

The researchers call it “micro-bubble based writing” which has been developed over the last four years.

Typically, the ‘printing’ for printed electronics is carried out through inkjet printers or screen printers.

The team anticipates that their method may provide a new paradigm in solution printed electronic circuits and devices in the future.

The team comprises of Subhrokoli Ghosh, Santu Das, Shuvojit Paul, Preethi Thomas, Basudev Roy, Apartha Mitra, and Soumyajit Roy. The development is published in the ‘Journal of Materials Chemistry C’ in June.

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