What's Happening?
Northrop Grumman has been awarded a $7 million contract by the Defense Advanced Research Projects Agency (DARPA) to advance diamond cooling technology for semiconductors used in military radar and communications. This Phase 2 award is part of DARPA’s
Technologies for Heat Removal in Electronics at the Device Scale (THREADS) program. The objective is to integrate diamond cooling into microelectronic devices, aiming for a tenfold increase in power density compared to the program's initial level. In Phase 1, Northrop Grumman achieved a 3.3-fold increase in power density. The company, in collaboration with Stanford University, has developed a method to grow a diamond layer within microscopic channels on the back of semiconductor devices. This innovative approach allows for efficient heat dissipation from hotspots, enabling chips to operate at higher power levels without overheating. Ben Heying, director of microelectronics at Northrop Grumman’s Space Park Foundry, highlighted that this breakthrough allows diamond-cooled chips to surpass traditional heat limitations, paving the way for a new generation of fast and reliable radio-frequency (RF) electronics. Northrop Grumman began investing in diamond-based microelectronics research in 2019.
Why It's Important?
This development is crucial for U.S. defense capabilities and the domestic semiconductor industry. Higher power density in RF systems translates to stronger signals from smaller components, which is vital for military communications and satellite links. Improved cooling also leads to reduced equipment size and weight, while simultaneously increasing speed, reliability, and operational life of critical defense electronics. The ability to operate microelectronics at higher power without thermal throttling addresses a long-standing limitation in the performance of advanced electronic systems. By embedding diamond directly into chips, Northrop Grumman is creating a 'turbocharged cooling system' that enhances the performance of even advanced materials like Gallium Nitride (GaN). Furthermore, Northrop Grumman's commitment to an open-access model for this technology means that other participants in the U.S. semiconductor industry will be able to leverage these advancements, strengthening the overall domestic supply chain and fostering innovation across the sector. This initiative directly supports the security and sustainability of the U.S. semiconductor supply chain, a critical national interest.
What's Next?
Northrop Grumman will proceed with Phase 2 of the DARPA THREADS program, focusing on integrating diamond cooling into semiconductors to achieve the targeted tenfold increase in power density. The company's open-access model suggests that the technology will be made available to other U.S. semiconductor industry participants, potentially leading to broader adoption and further innovation in microelectronics cooling. This could result in the development of more compact, powerful, and reliable electronic systems for various military applications, including advanced radar, communication systems, and satellite technology. Continued research and development in this area are expected to further push the boundaries of microelectronic performance, impacting future defense technologies and potentially commercial applications. The success of this program could also influence future DARPA investments in advanced materials and cooling solutions for high-performance electronics.
Beyond the Headlines
The integration of diamond cooling into semiconductors represents a significant leap in materials science and engineering, with profound implications beyond immediate military applications. The ability to manage heat more effectively at the device scale could unlock new possibilities for computing, telecommunications, and space exploration. Ethically, the open-access model promoted by Northrop Grumman could foster a collaborative environment within the U.S. semiconductor industry, potentially accelerating technological advancements and reducing reliance on foreign supply chains. This approach could also set a precedent for how defense-funded research can benefit the broader commercial sector. The long-term shift could see a new standard for thermal management in high-performance electronics, leading to more energy-efficient devices and systems. This innovation underscores the critical role of advanced materials in overcoming fundamental physical limitations in electronics, paving the way for smaller, faster, and more robust technologies across various sectors.
