Jefford Humes | NanoIntegris Technologies: How did a $95M DARPA project bypass the silicon memory bottleneck using carbon nanotube interconnects?
00:10:09 - 00:11:33
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Summary of the clip:
How did a $95M DARPA project bypass the silicon memory bottleneck using carbon nanotube interconnects?
As classical scaling limits under Moore's Law stall, 3D monolithic integration is emerging as the premier architecture for mitigating interconnect delays and energy dissipation in high-density computing. To realize true 3D integration, silicon-compatible materials must be capable of low-temperature processing to avoid destroying underlying transistor levels.
Through a two-phase, $95 million DARPA program collaborating with MIT, the National Research Council of Canada, and SkyWater Foundry, NanoIntegris’ Isosol S-100 carbon nanotubes were integrated into a novel 3D System-on-a-Chip (3D-SoC) design. Over 50,000 high-performance CNT field-effect transistors (CNFETs) were fabricated, serving as vertical interconnects between logic and memory arrays.
This monolithic integration directly bypasses the classic "memory wall" bottleneck that plagues traditional planar silicon layouts. The architecture has demonstrated the potential to deliver a 100x to 1000x improvement in energy-delay product (EDP), offering a clear manufacturing pathway for high-throughput, low-power next-generation computer chips.
In this short video, you can learn:
* The design of a 3D System-on-a-Chip fabricated with carbon nanotube field-effect transistors.
* The details of a $95M DARPA collaboration with SkyWater Foundry to manufacture CNT-based chips.
* How monolithic 3D integration can achieve 100x to 1000x improvements in chip speed and energy efficiency.
📋 **Clip Abstract** The speaker details a massive $95M DARPA initiative that integrated Isosol S-100 carbon nanotubes into commercial foundry processes at SkyWater. By fabricating over 50,000 CNFETs in a monolithic 3D System-on-a-Chip, the project demonstrated a massive reduction in the memory-to-logic bottleneck with up to 1000x energy-delay improvements.
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#Monolithic3DIntegration, #CNFETs, #3DSoC, #CarbonNanotubeInterconnects, #SemiconductorManufacturing, #HighPerformanceComputing
This is a highlight of the presentation:
Beyond Silicon: High‑Purity Semiconducting Carbon Nanotubes as a Foundation for Next‑Generation AI Hardware
Future of Electronics RESHAPED USA 2026
10-11 June 2026
Computer History Museum, Mountain View, California, USA
Organised By:
TechBlick
More Highlights from the same talk.
00:03:14 - 00:04:58
How do you extract pure semiconducting carbon nanotubes from a chaotic raw mix of metallic and carbonaceous impurities?
How do you extract pure semiconducting carbon nanotubes from a chaotic raw mix of metallic and carbonaceous impurities?
Raw single-walled carbon nanotubes (SWCNTs) synthesized via chemical vapor deposition, arc discharge, or plasma reactors are always a highly disorganized mixture. Typically, these materials emerge as 70% semiconducting and 30% metallic, a combination that renders them unusable for high-end electronics without further processing. To overcome this, sophisticated sorting methodologies are required to isolate the pure electrical properties of individual species.
NanoIntegris utilizes advanced physical and chemical separation processes to isolate high-purity fractions. By deploying density gradient ultracentrifugation (DGU), selective polymerization, and chromatography, researchers can systematically strip away carbonaceous debris, metal catalysts, and metallic-nature tubes. This results in highly enriched, electronic-grade semiconducting or metallic solutions exceeding 99% purity.
The final validation of these materials relies on rigorous metrology, with a strong emphasis on real-world functional analysis. While spectral analysis and electron microscopy offer detailed structural feedback, the ultimate standard of purity is proven through active device fabrication. Building thin-film transistors (TFTs) directly from these enriched solutions provides the definitive measure of charge transport performance.
In this short video, you can learn:
* The post-synthesis purification techniques used to eliminate metal catalysts and amorphous carbon.
* How density gradient ultracentrifugation and selective polymerization separate metallic from semiconducting nanotubes.
* Why thin-film transistor fabrication serves as the gold standard for verifying CNT electronic purity.
📋 **Clip Abstract** This clip explains the complex chemical and physical processes required to sort raw carbon nanotubes into high-purity metallic and semiconducting fractions. It highlights the transition from mixed raw materials to 99%+ pure electronic-grade solutions validated through device testing.
#SingleWalledCarbonNanotubes, #DensityGradientUltracentrifugation, #SemiconductingNanotubes, #ThinFilmTransistors, #PrintedElectronics, #FlexibleElectronics
12:48 - 14:17
How do you prevent copper oxidation from destroying the conductivity of a hybrid silver-copper ink?
Can carbon nanotube integration finally resolve the weight and power constraints holding back next-generation wearable displays and biosensors?
The intersection of printed electronics and biotechnology is rapidly shifting toward non-invasive, continuous physiological monitoring. Carbon nanotubes (CNTs) are poised to redefine this landscape, transitioning diagnostic tools from painful, invasive sampling to highly sensitive, wearable biochemical sensors. By leveraging the extreme surface-area-to-volume ratio and pristine charge transport of CNTs, these devices can detect minute chemical and biochemical fluctuations within the human body in real time.
Simultaneously, the augmented, virtual, and mixed reality (AR/VR/XR) sectors face severe engineering bottlenecks regarding device ergonomics, thermal management, and power density. Incorporating CNT-based semiconductor channels into the backplane circuitry of head-mounted displays offers a viable pathway to mitigate these issues. The superior carrier mobility of carbon nanotubes enables ultra-fast switching and lower operating voltages, directly translating to reduced battery sizes, minimized heat dissipation, and a significantly lighter physical footprint for headsets.
Beyond spatial computing, the consumer electronics sector continues to demand unprecedented pixel densities and form factors in display technology. High-performance CNT thin-film transistors (TFTs) are critical to achieving these ultra-high-resolution screens. By replacing traditional silicon or metal-oxide backplanes, nanotube-engineered displays can achieve faster refresh rates and superior energy efficiency, paving the way for highly integrated, multi-functional smart glass architectures.
In this short video, you can learn:
* How carbon nanotubes enable the transition from invasive testing to wearable, continuous biochemical sensing.
* The role of CNT-based semiconductors in reducing the weight and power consumption of AR/VR/XR headsets.
* The impact of nanotube technology on driving higher resolution and miniaturization in advanced display backplanes.
📋 **Clip Abstract** The speaker discusses the application of carbon nanotubes in wearable biochemical sensors for non-invasive medical monitoring, such as glucose detection. He also highlights how CNT-based semiconductors can reduce the weight and power consumption of AR headsets, alongside their potential in high-resolution display technologies.
🎤 Speaker: Jefford Humes
🏢 Company: NanoIntegris Technologies
📅 Event: Additive, Sustainable or 3D Electronics Innovations Day 2025
📍 Location: TechBlick Online Platform
🌐 Learn more at the next TechBlick event: https://www.techblick.com
#SilverCoatedCopper, #CoreShellParticles, #ConductivePastes, #HybridFillerMetallurgy, #PrintedElectronics, #AdditiveElectronics
00:05:23 - 00:07:12
Can single-walled carbon nanotubes detect disease biomarkers in human breath down to parts-per-billion sensitivity?
Can single-walled carbon nanotubes detect disease biomarkers in human breath down to parts-per-billion sensitivity?
Developing non-invasive medical diagnostics requires sensor materials capable of detecting target gas molecules at incredibly low concentrations in complex environments. Using 99% pure semiconducting single-walled carbon nanotubes spray-coated onto a P-type silicon wafer, researchers have developed highly sensitive sensor platforms. To ensure mechanical stability and reliable charge transfer, precise substrate adhesion techniques are deployed.
The sensing mechanism relies on surface functionalization using aminopropyltriethoxysilane (APTES) to modify both the outer and inner surfaces of the nanotube network. The attached amine groups act as specific adsorption sites that selectively promote the binding of nitric oxide (NO) molecules. This molecular interaction causes measurable changes in the electrical conductivity of the CNT network channel without resulting in sensor saturation.
The resulting sensor exhibits an exceptional recovery rate of over 90% and achieves a theoretical detection limit of just 0.2 parts per billion (ppb). This extreme sensitivity enables the non-invasive monitoring of exhaled nitric oxide, which is a clinical biomarker for asthma, rhinitis, and gastrointestinal inflammation.
In this short video, you can learn:
* How spray-coated semiconducting CNT networks are functionalized with APTES for selective gas targeting.
* The chemical mechanism behind non-saturating nitric oxide adsorption on modified nanotube surfaces.
* How a 0.2 ppb detection limit enables non-invasive diagnosis of respiratory and systemic inflammatory diseases.
📋 **Clip Abstract** This clip details the fabrication of a high-sensitivity nitric oxide sensor using functionalized 99% semiconducting carbon nanotubes. It explains how surface chemistry allows the detection of health biomarkers in exhaled breath at sub-parts-per-billion levels.
#SemiconductingSWCNT, #APTESFunctionalization, #NitricOxideSensing, #SubPpbGasSensors, #PrintedElectronics, #NonInvasiveDiagnostics