A surfactant assisted polyaniline coated paper based sensor with ultra-sensitive humidity sensing characteristics for smart and flexible wearables.

A new room temperature supra-molecular cryptophane A (CrypA)-coated surface acoustic wave (SAW) sensor for sensing methane gas is presented. The sensor is composed of differential resonator-oscillators, a supra-molecular CrypA coated along the acoustic propagation path, and a frequency signal acquisition module (FSAM). A two-port SAW resonator configuration with low insertion loss, single reson...

This work summarizes the electrochemical response of flavanone carbon composite electrodes in comparison with Nafion®-coated electrodes, for use as voltammetric pH sensors both buffered and low-buffered media. Square wave measurements suggest peak potential achieved from polymerization after electron-proton oxidation responds accuracy to solutions coated non-coated a shift 55.1 mV 54.6 per unit...

A relative humidity (RH) sensor based on single-mode-no-core-single-mode fiber (SNCS) structure is proposed and experimentally demonstrated. The agarose gel is coated on the no-core fiber (NCF) as the cladding, and multimode interference (MMI) occurs in the SNCS structure. The transmission spectrum of the sensor is modulated at different ambient relative humidities due to the tunable refractive...

The applicability and performance of linear solvation energy relationships (LSERs) as models of responses from polymer-coated acoustic-wave vapor sensors are critically examined. Criteria for the use of these thermodynamic models with thickness-shear-mode resonator (TSMR) and surface-acoustic-wave (SAW) vapor sensors are clarified. Published partition coefficient values derived from gas-liquid ...

Graphite oxide (GO) is generated by treating graphite with strong oxidizers. GO retains the structure of graphite, but with a larger and irregular basal plane spacing. The oxidation of graphite results in the formation of epoxide groups as well as C-OH and COOH groups. It is the presence of some of these moieties that allows GO to be dispersed in water, allowing for its use in waterborne formul...

Carbon-coated silicon nanoparticles (40 nm diameter) were used to prepare pitch-based Si/C composites with different Si contents and a pitch graphite-based Si/C/Gr composite. These prepared by pyrolysis at 900 °C of pitch/Si mixture obtained from the dispersion particles in solution THF. The as-prepared delivered high coulombic efficiencies first cycle (83–86%) stable reversible capacities (560...