SAW surface acoustic wave

Fig. 10. The rotary actuator (a) side view where SAW = surface acoustic wave and (b) view of the poled pie2oelectric ceramic ring showing poled segments and how temporal and spatial phase differences are estabUshed. Courtesy of Shinsei Kogyo Co.

Bulk and surface imprinting strategies are straightforward tools to generate artificial antibodies. Combined with transducers such as QCM (quartz crystal microbalance), SAW (surface acoustic wave resonator), IDC (interdigital capacitor) or SPR (surface plasmon resonator) they yield powerful chemical sensors for a very broad range of analytes. 

QCM Quartz crystal microbalance, SAW Surface acoustic wave. 

Good SAW (surface acoustic wave) characteristics are reported for Zn-terminated ZnO films homogeneously etched at low rates [95]. O-terminated crystallites lead to the development of craters which are identifiable in SEM (scanning electron microscopy) due to their higher etching rates. 

SAW, surface acoustic wave (impedance) FET, field-effect transistor EIS, electrolyte-insulator-semiconductor GOx, glucose oxidase LDH, lactate dehydrogenase LOx, lactate oxidase. 

Abbreviations FET, field effect transistor, ENFET, enzyme FET SAW, surface acoustic wave. 

Table 3. Some commercial companies that manufactured sensor-based electronic noses and related instruments in 2003. Key to sensor technologies MOS - metal oxide sensor, CP -conducting polymer, QMB - quartz crystal microhalance, FET - field effect transistor, SAW - surface acoustic wave key to analytical instruments MS - mass spectrometry, GC - gas chromatography, IMC - ion mobility cell...

Organic polymers and optical fibres [17] have been previously used to detect vapours of explosive analytes [18,19]. The transduction methods include absorption, fluorescence, conductivity, etc [16]. Such simple techniques are promising, because they can be incorporated into inexpensive and portable microelectronic devices. For example, a chemically selective silicone polymer layer on a SAW (surface acoustic wave) device has been shown to provide efficient detection for the nitroaromatic compounds [20]. The fluorescence of pentiptycene conjugated polymers [21,22] and... 

Cond, conductimetric Amp., amperometric Imped, impedimetric Pot., potentiometric CV, cyclic voltammetric DPV, differential pulse voltammetric SAW, surface acoustic wave QCM, quartz crystal microbalance. 

KNbOi (LB Number 1A-2). This crystal is ferroelectric below about 418 °C. Further phase transitions take place at about 225 °C and about — 10°C, retaining ferroelectric activity. The crystal has large electromechanical coupling constants and is useful in lead-free piezoelectric elements and SAW (surface acoustic wave) filters in communications technology (Fig. 4.5-13,4.5-14). 

LPE liquid phase epitaxy SAW surface acoustic wave... 

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