fig2
![Topological transformation of magnetic hopfion in confined geometries](https://image.oaes.cc/c6670d56-42f2-47b1-bc63-35459146ca04/microstructures4069.fig.2.jpg)
Figure 2. Hopfion under geometric constriction. (A) Mid-plane cross-sections of hopfions in circular nanodisk with d = 150 nm. (B) Simulated phase-shift image and (C) under-focused LTEM image of hopfion shown in (A) for viewing directions along the z-axis. (D)