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. Author manuscript; available in PMC: 2018 Mar 6.
Published in final edited form as: Chem Soc Rev. 2017 Mar 6;46(5):1272–1283. doi: 10.1039/c6cs00313c

Fig. 11.

Fig. 11

(a) Schematic illustration of electrostatic interaction detection of bacterial cells based on the switchable interaction of positively charged AuNPs and negatively charged enzyme. (b) Photograph and (c) absorbance intensity at the wavelength of 595 nm of the detection solutions of with different concentrations. (d) Inkjet printing scheme for the fabrication of test strips for bacteria detection. (e) Photograph of inkjet printed test strip for the Gram positive and Gram negative bacteria detection. Reproduced with permission from ref. 43. Copyright 2011, American Chemical Society and ref. 44. Copyright 2014, American Chemical Society.