English to Serbian Tech/Engineering Electronics / Elect Eng nanotechnology - semiconductor quantum wires

We see that within this 1 micrometer range there are many quantum boxes before the interfaces are improved. Each individual sharp photoluminescence peak is from one quantum box. When the interface is improved, the quantum box number increases dramatically, which means that the single quantum wire section is longer.

Ovde sam "interface" preveo kao "međupovršinu", "peak" kao "gornja granična vrijednost" (ako niej dobro samo sugerišite pa da postavim novo pitanje).
Buni me "improve" u ovom kontekstu.
Da li se prevodi kao poboljšanje ili možda obogaćenje ili tako nešto?