2D Materials for Monolithic 3D AI Computing

Brain-Scale Intelligence with Atomic-Scale Technology: From 2D Materials to Monolithic 3D AI Computing
What becomes possible when we scale computing vertically rather than relying on ever-smaller transistors?
This talk introduces PhantaField’s approach to connecting atomic-scale materials engineering with AI chip architecture—using low-temperature two-dimensional semiconductors to bring memory and computation closer together.
The talk begins with NanoGalaxy, PhantaField’s 12-inch plasma- and photon-enhanced metalorganic chemical vapor deposition (MOCVD) platform. Designed to grow two-dimensional transition-metal dichalcogenides, including MoS₂, at temperatures below 450 °C, NanoGalaxy combines plasma activation and in-situ ultraviolet illumination to support low-temperature growth and defect control. We will discuss how this approach addresses the thermal constraints of back-end-of-line integration and opens a path to building successive layers of active devices above existing circuitry. We will then introduce Sophon, PhantaField’s monolithic 3D AI accelerator architecture. Its 64-tier reference design interleaves logic and memory above a mature 28 nm silicon base, targeting 330 GB of embedded DRAM and 2.1 PB/s of local weight bandwidth.
Connecting materials, manufacturing, and architecture, the presentation will examine the device-performance requirements, integration challenges, and potential system-level benefits of this approach. The central theme is a path toward brain-scale intelligence through atomic-scale technology—not simply by scaling with more electricity, but by rethinking how computation and memory are built together.
Read More: (https://www.nature.com/articles/nature15387)(https://www.phantafield.com/whitepaper)
Speaker:
Dr. Xuejun Xie
Founder & CEO PhantaField Inc
AGENDA:
Thursday September 17, 2026
11:30 AM: Networking, Pizza & Drinks
Noon — 1 pm: Seminar
Please register on Eventbrite before 9:30 AM on Thursday September 17, 2026
$4 IEEE members $6 non IEEE members
(discounts for unemployed and students )
Bldg: ==> Use corner entrance: Kifer Road / San Lucar Court ==> Do not enter at main entrance on Kifer Road, EAG Labs, 810 Kifer Road, Sunnyvale, California, California, United States, 95051