The glitchy effect was achieved via animated Gradient nodes.
Have a look at this incredible animation created by Sabrina Garcia, a 3D Artist known to many for creating outstanding sci-fi-themed artworks using Blender. First unveiled back in October 2022, the animation depicts a realistic old-school CRT display created entirely in Blender using its Geometry Nodes toolset and animated textures. According to the creator, the glitchy effect was achieved with "a lot of animated Gradient nodes that are used to drive the refractive distortion of the main material".
Click here to learn more about the animation and check out more of Sabrina's amazing works. Also, don't forget to join our 80 Level Talent platform, our Reddit page, and our Telegram channel, follow us on Instagram and Twitter, where we share breakdowns, the latest news, awesome artworks, and more.