On compression of alpha-cristobalite SiO2 to pressures above approximately 12 GPa, a new polymorph known as cristobalite X-I forms. The existence of cristobalite X-I has been known for several decades ...

Understanding disordered structure is difficult due to insufficient information in experimental data. Here, we overcome this issue by using a combination of diffraction and simulation to investigate ...

Scientists in China developed a method for preparing porous SiO2 materials by combining electron beam co-evaporation with selective chemical etching. Based on this method, all-silica ultraviolet laser ...

Abstract: Metal nanoshells, consisting of a dielectric core with a metallic shell of nanometer thickness, are a new, composite nanoparticle whose optical resonance can be designed in a controlled ...

National Key Laboratory of Science and Technology on High-strength Structural Materials, Central South University, Changsha 410083, China ...