Raman Spectra (IMAGE) Institute for Basic Science Caption This is the raman spectra of exfoliated NiPS3. (a) Spectra of a thick sheet (d 107 nm). These spectra are indistinguishable from those reported for bulk NiPS3. (b) Spectra of thin NiPS3 sheets (2-7 layers), together with the spectrum of a thick sheet shown in panel (a), and the substrate spectrum. All spectra were acquired in a single pass, under identical experimental conditions. Credit IBS Usage Restrictions None 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.