* The bacteria actively volatilized selenium by reducing selenite, while simultaneously removing bismuth and selenium from the growth media to synthesize nanoparticles, with strain NT-I proving to be the most effective in producing pure BiSe.
* The synthesized nanoparticles, measuring 50-100 nm in diameter, are small enough to exhibit quantum size effects, and the efficient synthesis is linked to the high selenium volatilizing capability of the bacterial strains.