Fig. 7
From: 2D transition metal dichalcogenides with glucan multivalency for antibody-free pathogen recognition
Detection of a single copy of bacteria with dex-WS2. a Optical photographs of distinctly spread single bacterium. b Raman mapping of the single bacterium treated with dex-WS2 based on the Raman scattering peak at 352 cm−1, demonstrating that dex-WS2 nanosheets could selectively detect E. coli at single copy level (scale bar, 2 μm)
