Compactness is crucial for several reasons: 1. Space Efficiency: Smaller devices mean more can fit into a limited space, making them ideal for applications like electronics and medical devices. 2. Enhanced Performance: Nanoscale materials often exhibit unique properties that can improve the performance of devices. For example, carbon nanotubes have exceptional electrical and mechanical properties. 3. Energy Efficiency: Compact devices often consume less power, which is critical for sustainable technology and energy storage solutions.