Cite
MLA Citation
Tao Wang et al.. “Blue/red ratiometric pH sensors without background signals based on 808 nm-excited core–triple shell up-conversion nanoparticles.” Journal of materials chemistry, vol. 9, no. 48, 2021, pp. 17451–17460. http://access.bl.uk/ark:/81055/vdc_100148065679.0x00000e