graphic (IMAGE)

Rice University

graphic

Caption

A team of Rice University researchers and collaborators showed that a two-layer Janus TMD material — molybdenum sulfur selenide stacked on molybdenum disulfide (bottom right: optical image of a sample) — converts light through a process called second harmonic generation (SHG), in which the material emits light at twice the frequency of the incoming beam (left). Usually, the SHG signal forms a six-pointed ‘flower’ shape, but certain wavelengths of light distort the pattern due to optostriction (top right: symmetrical ‘flower’ pattern in gray and asymmetrical SHG signal pattern in red). 

Credit

Kunyan Zhang/Rice University

Usage Restrictions

Must credit Kunyan Zhang/Rice University

License

Original 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.