Nanoscale materials such as nanopillars are sometimes used in solar cells which combats the cost of traditional silicon solar cells. Development of applications incorporating semiconductor nanoparticles to be used in the next generation of products, such as display technology, lighting, solar cells and biological imaging; see quantum dots. Recent application of nanomaterials include a range of biomedical applications, such as tissue engineering, drug delivery, and biosensors.[35][36][37][38]