THz-Field-Driven Scanning Tunneling Luminescence Spectroscopy (IMAGE) Yokohama National University Caption Basic concept of THz-field-driven scanning tunneling luminescence (THz-STL) spectroscopy. Luminescence from a localized plasmon can be induced by THz-field-driven inelastically tunneled electrons. Credit Yokohama National University Usage Restrictions The image may only be used with appropriate caption or credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.