We live inside a storm of invisible signals. Phones, Wi-Fi routers, 5G networks, smartwatches, and medical sensors constantly send and receive electromagnetic waves.
While this wireless traffic powers modern technology, it also creates a serious side effect, electromagnetic interference (EMI). These unwanted signals can confuse or disrupt delicate electronics, especially in medical devices, wearable sensors, and flexible displays, where failure is not an option.
However, a team of researchers has now shown a unique solution in the form of an ultra-thin, flexible, see-through film that can block almost all unwanted electromagnetic radiation while remaining light, transparent, and scalable for real-world use.
“This is the first time anyone has overcome the longstanding trade-off between electrical conductivity and optical transparency in metallic nanowire networks. After our laser post-treatment, both the conductivity and transparency improve simultaneously,” Jungang Zhang, lead researcher, said.
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