Morphological and structural analysis of the ZnO NRs by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) shows that the ZnO NRs were grown vertically on platinum electrodes with a diameter around 20-200 nm and a length of 5-7 μm. These modified electrodes were applied for detecting Salmonella enteritidis at a concentration of 103 cfu/mL. Electrochemical measurements including cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) reveal that the ZnO NR-modified platinum electrodes could detect Salmonella bacteria well with signal to noise ratio much higher than 3 : 1. In the paper by J. Zhu et al., carbon quantum dots (CQDs) with high quantum yield and good stability were synthesized from waste tea leaves and peanut shells by a one-step hydrothermal method. HWFSR systems containing novel mixer designs are capable of producing pure M-phase VO2 particles in a single step contrary to the current reactor design that uses a second post heat treatment step, and they are capable of synthesizing many other nanoparticle species, especially those requiring high temperature and pressure reaction conditions.