Measuring moisture content in cookies using dielectric spectroscopy

Detecting surface features on conducting specimens through an insulation layer using a capacitive imaging technique

“…Nonetheless, capacitive imaging shows considerable promise for the detection of CUI. It is also worth mentioning that work reported elsewhere indicated that such coplanar capacitive sensors are sensitive to moisture content and water intrusion in non-conducting specimens [30][31][32][33], thus this CI approach also has the potential to detect the presence of water within the insulation layer, as an early warning of CUI. Work including the experiments on industrial specimens with actual Corrosion Under Insulation is currently being performed.…”

Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: a review

“…FEF sensors are also used in parallel plate configuration, with one in front of the other and the SUT between them. Li et al (2003) used FEF sensors in this configuration to monitor the moisture content in cookies. In this case, sensors with three concentric electrodes were used with frequency ranging between 10 Hz and 10 kHz.…”

Thermal, Structural, and Physical Properties of Freeze Dried Tropical Fruit Powder

“…Li et al [11] measured moisture content of cookies using dielectric spectroscopy. Nelson and Datta [12] measured the dielectric constant and loss factor with an open-ended coaxial line probe and an impedance analyzer on external surfaces and internal tissue of four cultivars of miniature watermelons provided new permittivity data over a range of maturities at frequencies from 10 MHz to 1.8 GHz at 24 ∘ C. They reported that both the dielectric constant and loss factor of internal tissues decreased monotonically with increasing frequency showing the dominance of ionic conduction at lower frequencies and dipolar losses at the higher frequencies.…”