Fig. 2
From: Bacterial capture efficiency in fluid bloodstream improved by bendable nanowires
Nanomechanical properties of NWs. a Atomic force microscopy (AFM) height channel visualizing a single-crystalline NW. The inset shows the corresponding Derjaguin—Mueller—Toporov (DMT) Young’s modulus map. Scale bars in a and inset are 1 and 2 μm, respectively. b Schematic representation of the NiCo(OH)2CO3 NW with one crystal domain. c Profile analysis of Young’s modulus map along the blue dashed line. d AFM height channel visualizing a polycrystalline NW. The inset shows the corresponding DMT Young’s modulus map. Scale bars in d and inset are 1 and 2 μm, respectively. e Schematic representation of the NiCo2O4 NW with nanoscale multi-crystal domain. f Profile analysis of the Young’s modulus map along the green dashed line. g, h Experimental Young’s modulus of NWs as a function of diameter size and simulated Young’s modulus distributions along a single NW by COMSOL software. g Single-crystalline and h polycrystalline NWs. Error bars: standard error (n = 3). i Relationship between the applied force parallel and the lateral deflection distance (x displacement) determined by FEM using the non-linear mode in the COMSOL software. The inset shows the geometric parameters for a bent NW depicting the deflection (δ) when a force (F) is applied at the top. The bending properties of NWs in situ monitored by environmental SEM, j single-crystalline (i to iv) and k polycrystalline NWs (v to viii). Scale bars in j and k are 500 nm
