(Color online) Concept for high-throughput screening of materials properties using thickness-shear mode resonators: (A) several key properties of interest of sensing materials and (B) the Butterworth–Van Dyke equivalent circuit model of a piezoelectric resonator near resonance with a deposited material under study (see text for details).
(Color online) Impedance measurements from a sensor resonator positioned in a test chamber: (A) direct-wired connection to analyzer and (B) wireless radio frequency connection using a transmitter coil and a receiver coil.
(Color online) Configurations of a wireless proximity resonant sensor array system for high-throughput screening of sensing materials. (A) A single transmitter coil scans across an array of receiver coils attached to resonant sensors. (B) An array of transmitter coils interrogates an array of receiver coils using an electronic multiplexer.
Fabricated coils (antennas) for wireless resonant sensor array system for the high-throughput materials screening: (A) a transmitter coil and (B) a receiver coil attached to a resonant TSM sensor.
Example of an array of four TSM resonator sensors connected to an array of four receiver coils and positioned inside of a test cell with a transparent nonconductive window.
(Color online) Modification of the water-vapor-response sensitivity upon conditioning of Nafion sensing film at different temperatures for : (A) measured response and (B) measured response as a function of partial pressure of water vapor in the range from 0 to . Traces in A and B were vertically offset for clarity.
Patterns of response of Nafion sensing film as a function of both conditioning temperature and nature of vapors: (A) measured response and (B) measured response. These data are presented for the largest tested partial pressures of vapors . Vapors: (water), EtOH (ethanol), and ACN (acetonitrile).
(Color online) Evaluation of selectivity of Nafion sensing films to several vapors after conditioning at different temperatures: (A) , (B) , and (C) . Vapors: (water), EtOH (ethanol), and ACN (acetonitrile). Concentrations of vapors are 0, 0.02, 0.04, 0.07, and . Arrows indicate the increase of concentrations of each vapor.
Desired features for wireless high-throughput impedance analysis of materials arrays using sensor systems.
Saturated vapor pressures and dielectric and polarity properties of vapors employed for the evaluation of Nafion (Ref. 44 and 45).
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