2D Materials for Monolithic 3D AI Computing

Dr. Xuejun Xie Founder and CEO of PhantaField Inc. San Francisco Bay Area IEEE Nanotechnology Council 2020, 2017 & 2014 Nanotechnology Council Outstanding Chapter (world-wide) 2019, 2016 & 2014 IEEE Outstanding Chapter (Western USA) 2019, 2016 IEEE Outstanding Chapter (Santa Clara Valley) http://sites.ieee.org/sfbanano Brain-Scale Intelligence with Atomic-Scale Technology: From 2D Materials to Monolithic 3D AI Computing Dr. Xuejun Xie Founder and CEO PhantaField Inc., In-Person Meeting 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 Walk-In attendance is welcomed but discouraged (cash or check; no credit cards) Please assist us in our event planning! If you decide not to attend... - please cancel reservations by 8:00 AM on Thursday, ** Tickets cancelled by 8 AM on September 17, 2026 will have payments refunded*** Note: Eventbrite Fees will not be refunded Day of Event Sign In & Registration Information: Please be prepared to present a Photo ID when entering EAG and signing in for the seminar. (Driver's license, or another government issued identification). Registration information now also includes attendee Citizenship . Location: EAG Laboratories 810 Kifer Road, Sunnyvale ==> Use corner entrance: Kifer Road / San Lucar Court ==> Do not enter at main entrance on Kifer Road (Parking: on street or in parking lot behind EAG) Brain-Scale Intelligence with Atomic-Scale Technology: From 2D Materials to Monolithic 3D AI Computing Abstract: 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: A subthermionic tunnel field-effect transistor with an atomically thin channel PhantaField PFG-1 Sophon Whitepaper Speaker Bio: Dr. Xuejun Xie Founder & CEO; PhantaField Inc. Dr. Xuejun Xie is the Founder and CEO of PhantaField Inc., where he leads the development of low-temperature 2D semiconductor growth technology and monolithic 3D AI computing architectures. He earned his Ph.D. in Electrical and Computer Engineering from the University of California, Santa Barbara, where his work on atomically thin devices contributed to the first 2D-channel tunnel field-effect transistor to break the 60 mV/decade thermionic limit, published in Nature. He also led the demonstration of a room-temperature 2D memristive transistor with optical short-term plasticity—a light-sensitive neuromorphic device built on an MoS₂ quantum-dot superlattice formed by electron-beam irradiation—presented at IEDM 2017. Before founding PhantaField, he served as a Senior Scientist at IMT, now Atomica. His work bridges semiconductor materials, devices, and manufacturing, with a focus on translating atomic-scale innovations into scalable, energy-efficient computing. PhantaField is advised and backed by Prof. Chenming Hu, inventor of the FinFET and former CTO of TSMC. If you have questions or problems with your registration, please contact [email protected] * Please help us manage our event planning. When we have many walk-in attendees, it is difficult for us to order the proper amount of food for lunch. ** Tickets cancelled by 8 AM on September 17, will have payments refunded*** Note: Eventbrite Fees will not be refunded When it comes to understanding the physical structure, chemical properties and performance of advanced materials and integrated circuitry, no other scientific services company offers the breadth of experience, diversity of analytical techniques or technical ingenuity of EAG Laboratories. We deliver multi-disciplinary, problem-solving expertise to help our customers accelerate innovation, ensure quality and safety, and protect intellectual property.