Effect of high-temperature shock-wave compression on few-layer MoS2, WS2 and MoSe2

- Few-layer MoS2, WS2 and MoSe2 subjected to high-temperature shock wave treatment.
- Interlayer separation between (0 0 2) planes decreases after shockwave treatment.
- A1g and the E2g1 Raman modes soften initially and then stiffen with shock exposure.
- DFT calculations explain the shock-induced changes in few-layer MoS2.
- Both compressive and shear strain are responsible for the observed changes.