Beilstein J. Nanotechnol.2018,9, 499–507, doi:10.3762/bjnano.9.48
been identified: very low ammonia concentrations from 0.01 to 0.2 ppm, high ammonia concentrations from 20 to 350 ppm and, most importantly, the intermediate or physiological range of ammonia from 0.5 to 10 ppm.
Keywords: electron diffraction; electron microscopy; NH3sensors; silver nanoparticles; UV
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Figure 1:
UV–vis absorption spectra obtained from (a) the colloidal solution without ammonia and (b–i) from s...
Beilstein J. Nanotechnol.2014,5, 2179–2191, doi:10.3762/bjnano.5.227
, suggesting a high desorption barrier for the tube–NO2 interaction.
The effect of adsorption on the nanotube on the transistor characteristics can also depend on the device architecture and contact type. Bradley et al. [10] discuss a similar response in contact-passivated CNFETs for NH3sensors, but indicate
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Figure 1:
Examples of different back-gated device architectures employed for carbon nanotube field-effect tra...