

Sure. But we need to see pics, or it didn’t happen.
The abstract doesn’t mention them re-gaining their old capacity. It only says they shrink. And something about voltage. So I have my doubts. I mean it’s nice if my spicy pillow shrinks a bit. But what does that help if it continues to stay nearly dead? And an application in products would be hard to accomplish. At that temperature, all the plastic etc is going to melt. Maybe the solder as well.
If you’re talking about normal video surveillance, I think most of today’s cameras use regular light. These sunglasses would be effective against a biometric scanner, the iPhones depth camera, a Windows Hello screen unlock or an XBox Kinect. But the average camera on the street uses visible light and likely has an IR filter in place (at daytime), so it won’t even see infrared.
What works against these are ski masks, wearing a motorcycle helmet… Or even large hat or golf hat, depending on the camera’s perspective.