Nanoscale hollow spheres having a specific range of outer diameter, inner diameter and wall thickness, useful as building material, filling material or construction material, as a radiopaque material in the ultrasound investigations

摘要

Nanoscale hollow spheres having an outer diameter of 10-100 nm, preferably 20-50 nm, an inner diameter of 1-90 nm, preferably 10-40 nm, and a wall thickness of 2-40 nm, preferably 5-20 nm, are claimed.