An Electrochemical Wind Velocity Sensor

Abstract

Electrochemical interfaces invariably generate unipolar electromotive force because of the unidirectional nature of electrochemical double layers. Herein we show an unprecedented generation of a time varying bipolar electric field between identical half-cell electrodes induced by tailored interfacial migration of magnetic particles. The periodic oscillation of a bipolar electric field is monotonically correlated with velocity-dependent torque, opening new electrochemical pathways targeting velocity monitoring systems.

Wireless Chemical Charging of a Metal-Ion Battery by Magnetic Particles

“…The co-precipitation method was used for the synthesis of γ-Fe 3 O 4 . − Anhydrous FeCl 3 (2.4 g) and FeCl 2 ·4H 2 O (1.98 g) were dissolved in 50 mL of deionized water separately. The solutions were then mixed by stirring them vigorously.…”

Flexible Vibrotactile Actuator Based on Soft PVC Gel Embedded Polyaniline/Silicon Dioxide Nanoparticles

“…Poly(aniline-co-3-amino benzoic acid) -covered SDNs (PANI-SDNs) was synthesized by copolymerizing aniline and 3-amino benzoic acid -doped SDNs in a 1:2 ratio respectively [31]. Typically, in a 250 mL round bottom flask, 2.0 g of 3-amino benzoic acid -doped SDNs were dispersed in 100 mL of 0.5 M HCl solution.…”

“…Since SDN possesses acidic surface environment, serve as templates for adsorption of aniline monomers, progressive research has been undertaken to design core-shell nanostructures [28][29][30]. The robust and highly bounded PANI over SDN can be achieved by covering SDN with 3-amino benzoic acid, followed by copolymerizing aniline by chemical oxidative polymerization route leads to highly stable PANI anchored SDN surfaces [31][32][33][34].…”