Shown above are representative snapshots of the compression of hexagonal ice to high-density amorphous ice. Blue and red spheres represent different local environments of water molecules based on ...

Amorphous Si shows an irreversible sharp transition to an amorphous metallic phase near 16 GPa. At 77 K, amorphous ice changes from its low-density to high-density polyamorph under pressure in a ...

Despite their assumption that the lake was frozen and devoid of organisms, ground-penetrating radar scans indicated the ...