XO-NANO Smartfoam XO-NANO Smartfoam specialises in additives for foams to give them new sensing or thermal properties. IDTechEx previously spoke to XO-NANO in November 2019. IDTechEx spoke to XO-NANO again in October 2022; since the previous interview XO-NANO has continued to develop its products, create some new applications, and expand the company. XO-NANO Smartfoam