Particles that are mere nanometers in size are at the forefront of scientific research today. They come in many different shapes: rods, spheres, cubes, vesicles, S-shaped worms and even donut-like rings. What makes them worthy of scientific study is that, being so tiny, they exhibit quantum mechanical properties not possible with larger objects.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/shapingnanop.jpg)
Source:
https://phys.org/news/2019-10-nanoparticles-quantum-technology.html