Upper Panel: schematic of optical excitation in the K valley of WS2 monolayers. Lower Panel: Photoluminescence (PL) intensity map of a triangular monolayer island of WS2 and the associated valley polarization map demonstrate the clear …more.
Updated: 10/19/2017 02:14P
The UK advertising watchdog, Advertising Standards Authority (ASA) this week ruled on a matter involving the claims of Unilevers PG Tips which makes triangular (tetrahedric) tea bags in a long-running dispute with a rival. The tea maker claimed in an ...
Updated: 07/25/2014 03:37A