Researchers have achieved a major breakthrough in flexible electronics by developing carbon nanotube-based radio-frequency transistors capable of operating above 100 GHz. The advance could play a key role in enabling future 6G wireless communication systems, which require ultrafast, energy-efficient, and flexible electronic components.

Traditional flexible transistors have struggled to reach extremely high frequencies because flexible materials often trap heat, limiting performance and efficiency. To overcome this challenge, scientists designed transistors using carefully aligned carbon nanotube (CNT) arrays on flexible substrates. Carbon nanotubes are known for their exceptional electrical conductivity, thermal performance, and mechanical flexibility, making them ideal for next-generation electronics.

Figure 1. Transistors.

The research team also introduced an advanced electrothermal co-design approach that improves heat dissipation while maintaining strong radio-frequency performance. This strategy allowed the flexible transistors to achieve remarkable speeds without excessive power consumption. Figure 1 shows transistors.

The devices demonstrated an impressive current-gain cut-off frequency of 152 GHz and a power-gain cut-off frequency exceeding 100 GHz, setting a new benchmark for flexible electronics. Despite their high performance, the transistors maintained low power usage, an essential feature for wearable devices and portable communication technologies.

To showcase practical applications, the researchers built flexible radio-frequency amplifiers using the new transistors [1]. These amplifiers delivered strong output power and stable signal amplification in the K band, an important frequency range for wireless communications.

The breakthrough opens the door for future flexible 6G technologies, including smart wearables, flexible IoT devices, advanced medical sensors, and lightweight communication systems. The technology could also support applications in radar, imaging, and high-speed data processing.

While challenges such as large-scale manufacturing and system integration remain, the study demonstrates that carbon nanotube electronics could transform the future of flexible, ultrafast wireless devices.

References

1. https://bioengineer.org/flexible-carbon-nanotube-transistors-surpass-100-ghz/

Cite this article:

Keerthana S (2026), Ultra-Fast Flexible Transistors Reach 100 GHz Milestone, AnaTechMaz, pp.392