A high-performance measurement system for simultaneous mass and resistance variation measurements on gas sensing polymer films

Fort, Ada; Rocchi, S.; Serrano-Santos, M.B.; Ulivieri, N.; Pioggia, Giovanni; Francesco, Fabio Di

doi:10.1016/j.snb.2005.07.031

Cited by 9 publications

(5 citation statements)

References 8 publications

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“…Impedance spectroscopy measurements were performed on TSM and interdigital sensors to extract several independent parameters. Independent output parameters of individual acoustic-wave transducers were measured, for example, wave propagation velocity and attenuation, series-resonant frequency and resonant admittance, and material resistance and resonance frequency. , A capacitive sensor was described that consisted of a parallel plate capacitor and a quartz crystal oscillator . Passive inductive–capacitive or passive inductive–capacitive–resistive sensors were described that measured multiple unrelated physical quantities .…”

Section: Need For Transducers With Multiple Response Mechanismsmentioning

confidence: 99%

Materials and Transducers Toward Selective Wireless Gas Sensing

et al. 2011

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Introduction 7315 1.1. Diversity of Monitoring Needs of Volatiles 7315 1.2. Chemical Interferences As the Key Noise Parameter for Wireless Sensors 7316 1.3. Goals and Scope of This Review 7317 1.4. Topics That Are Out of Scope of This Review 7317 2. Anatomy of Wireless Gas Sensors 7317 2.1. Active and Passive Wireless Sensors 7318 2.2. Transducers for Wireless Passive Sensors 7319 2.3. RFID Sensors 7320 2.4. Key Performance Factors of Wireless Sensors 7320 2.5. Summary of Specific Requirements for Wireless Gas Sensors 7321 3. Need for Transducers with Multiple Response Mechanisms 7321 3.1. Limitations of Sensor Arrays for Tethered and Wireless Gas Sensing 7322 3.2. Data Processing 7322 3.3. Multivariate Sensing 7323 4. Integration of Sensing Materials with Transducers 7323 6.3. System Approach for Development of Wireless Gas Sensors 7345 6.4. Path Forward 7345 Author Information 7346 Biographies 7346 Acknowledgment 7347 References 7347

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Section: Need For Transducers With Multiple Response Mechanismsmentioning

confidence: 99%

Materials and Transducers Toward Selective Wireless Gas Sensing

et al. 2011

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“…In addition, some polymers undergo degradation or an irreversible swelling process when exposed to certain environments (21,22), while others adsorb and respond to water vapor (23). Although, it has been revealed that the response characteristics of polymer-based chemical sensors can be improved by incorporating carbon particles (24)(25)(26)(27)(28)(29), copper (30), inorganic salts (31), and sulfonate salts/ compounds (32,33) into the polymer framework. Others have shown that molecular imprinting is an alternative method of introducing sensor selectivity (34)(35)(36)(37).…”

Section: Receptorsmentioning

confidence: 99%

Environmental Monitoring of Hydrocarbons: A Chemical Sensor Perspective

Pejcic

Eadington

Ross

2007

Environ. Sci. Technol.

115

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Assessing the environmental impact of organic pollutants requires reliable analytical tools that can rapidly screen them with minimal sample handling. Chemical sensors are expected to play an increasing role in environmental monitoring, and recent technological advances are certain to facilitate the application of chemical sensing devices. The search for highly selective, sensitive, low cost, stable, and robust sensors for hydrocarbons is an area of interest that is reflected by many publications on this topic. This report surveys some of the work that has been undertaken using sensors to detect hydrocarbons in the gas and liquid phase. The analytical capabilities of various sensors are compared and discussed in terms of their selectivity, sensitivity, and detection limit. It was found that the sensitivity is highly dependent on the experimental conditions used in the preparation of the sensing surface. Many sensors display acceptable sensitivity under controlled laboratory conditions; however, very few are selective enough to distinguish among several hydrocarbons in complex mixtures. Selectivity is still a challenge that is hindering the widespread application of chemical sensors for environmental monitoring of hydrocarbons and a number of strategies have been proposed to help overcome some of these problems.

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“…Although the material is hydrophobic, its hydrophobicity and hence affi nity for certain organic compounds can be further increased by (1), resulting in an uptake, adsorption or recognition event, (2), which then is transduced into an output signal such as an electric current or an optical signal; (b) in membrane applications, the same interface can be used to preferentially concentrate or recognize desired compounds present upstream like in sensors (1), but these compounds then diff use, convectively fl ow or are transported across the interface (2) and leading to an increase in the concentration downstream (3). However, modifying the physico-chemical properties of polymers may go along with an undesired change in their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Interfaces Based on Carbon Nanotubes, Ionic Liquids and Polymer Matrices for Sensing and Membrane Separation Applications

Serrano-Santos¹,

Ortega²,

Schäfer³

2014

Smart Membranes and Sensors

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Th e combination of carbon nanotubes with widely tunable materials such as ionic liquids and polymers theoretically provides a tremendous degree of freedom for designing thin fi lms (membranes) for specifi c sensing and separation applications. Not surprisingly, a plethora of applications has been reported in literature primarily for sensing devices. Th is chapter discusses some selected case studies which illustrate, on one hand, the exciting new opportunities which a combination of these materials off er; on the other, it stresses the strong need for evaluating their potential in the context of existing devices such as to appreciate their true benefi t.

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A high-performance measurement system for simultaneous mass and resistance variation measurements on gas sensing polymer films

Cited by 9 publications

References 8 publications

Materials and Transducers Toward Selective Wireless Gas Sensing

Materials and Transducers Toward Selective Wireless Gas Sensing

Environmental Monitoring of Hydrocarbons: A Chemical Sensor Perspective

Interfaces Based on Carbon Nanotubes, Ionic Liquids and Polymer Matrices for Sensing and Membrane Separation Applications

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