Fig. 1. Invisibility methods based on transformation optics

Fig. 2. Principle and applications of metasurface

Fig. 3. Reflection-type ultrathin electromagnetic invisibility cloaks based on metasurfaces

Fig. 4. Polarization-insensitive reflection-type ultrathin invisibility cloaks

Fig. 5. Transmission-type ultrathin invisibility cloaks based on metasurface with balanced gain and loss

Fig. 6. Transmission-type ultrathin invisibility cloaks based on integration of metasurfaces and zero-index materials

Fig. 7. Broadening the bandwidth and the range of incident angles of ultrathin invisibility cloaks