Labview base development system

The surface morphology of Mg sheets fabricated using different MAO conditions and soaking times were examined via scanning electron microscopy (SEM). Elements present on the surface of the MAO-Mg sheets after soaking were identified by energy dispersive spectroscopy (EDS). X-ray diffraction (XRD) was used to detect the composition on the Mg surface after MAO treatment. The short-circuit current (I_sc), open-circuit voltage (V_oc) and the short-circuit translated charge (Q_sc) were measured using a Keithley 6514 programmable electrometer (Tektronix, Inc, USA). The data were collected though the LabVIEW Base Development System (National Instruments, USA).

The air compression control system was used to generate high-pressure airflow with controllable speed and frequency. When keeping the jet on for 0.2 s and off for 0.5 s, the average gas-liquid two-phase flow volume of a vertical capillary with an inner diameter of 1 mm and an outer diameter of 2 mm is approximately 1.0 ml per cycle. Sodium chloride and DI water were used for the preparation of NaCl solutions with different concentration gradients. Liquid gas-liquid two-phase flowing and its movement in the tube are recorded by a high-speed camera (Revealer) at a typical recording speed of 30,000 frames per second. The velocity of high-speed airflow was measured by a hot wire anemometer (AR866A). The output voltage of GL-TENG was measured using a 3 Series mixed domain oscilloscope with a high-impedance (100 megohms) probe, while the current was measured via an SR570 low-noise current preamplifier (Stanford Research Systems). Data were collected through LabVIEW Base Development System (National Instruments).