Alexander G Ramm
The problem of practical preparing small impedance particles with prescribed boundary impedance is formulated and its importance in physics and technology is emphasized. If this problem is solved then materials with a desired refraction coefficient can be prepared. These include meta-materials and materials with a desired radiation pattern. Some arguments are given to prove the existence of small particles with the prescribed boundary impedance.
English 
Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Hindi