The nodes report sensor readings every minute via a low-power 2.4GHz wireless network.
The comparison of reported sensor performances of different materials used for ammonia detection is provided in theTable S5† and also the sensor performances of previously reported TiO2 sensor materials for different gases are given in the Table S6†39,40,41,42,43,44,45,46,47,48.
Overall, the reported sensor can be applied to environmental monitoring, industrial production and the biomedicine field for dimethyl sulfide detection.
Moreover, other analytical characteristic of the sensor like lower detection limit (LOD), concentration linear range and selectivity coefficients were improved, compared to the previously reported sensor.
A microelectrode array sensor platform was designed and fabricated to increase diversity, flexibility, and versatility of testing capabilities over that of traditionally reported sensor platforms.
Besides, the reported sensor showed a high degree of portability, compact design and high analytical performance for remote BTEX monitoring, in situ and in real-time.
Although this device was tested as a liquid level sensor, but the distinct results obtained for samples with different index of refractions demonstrate that the reported sensor can also be used as a liquid refractometer.
The output signal of an optical fiber sensor in general is nonlinear, but both the signal difference (dry minus wet) and diff/dry signal ratio for the reported sensor show linear dependence with the launching power at intensities below threshold.
This is much better than that of the previously reported sensor in visible region [24, 28, 34, 39].
The detection limit for streptavidin-biotin binding of a sensor fabricated from 39-nm-diameter nanoparticles was 20-fold better than a previously reported sensor fabricated from 13-nm-diameter gold nanoparticles.
