Miniaturized gas monitoring system employing several SAW sensors

Plötner, Matthias; Berger, O.; Stab, H.; Fischer, Wolf‐Joachim; König, Pascal D.; Beyerlein, Detlev; Schwarz, A. S.

doi:10.1109/freq.2001.956334

Cited by 9 publications

(4 citation statements)

References 7 publications

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“…Much of the success of SAW-based sensors has been for gas-phase targets, and a wide variety of sensors have been successful for both inorganic 59,60,61,62,63 ( e.g. , hydrogen, ozone, nitrogen dioxide, etc.)…”

Section: Saw-based Sensorsmentioning

confidence: 99%

Surface acoustic wave devices for chemical sensing and microfluidics: a review and perspective

et al. 2017

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Surface acoustic waves (SAWs), are electro-mechanical waves that form on the surface of piezoelectric crystals. Because they are easy to construct and operate, SAW devices have proven to be versatile and powerful platforms for either direct chemical sensing or for upstream microfluidic processing and sample preparation. This review summarizes recent advances in the development of SAW devices for chemical sensing and analysis. The use of SAW techniques for chemical detection in both gaseous and liquid media is discussed, as well as recent fabrication advances that are pointing the way for the next generation of SAW sensors. Similarly, applications and progress in using SAW devices as microfluidic platforms are covered, ranging from atomization and mixing to new approaches to lysing and cell adhesion studies. Finally, potential new directions and perspectives on the field as it moves forward are offered, with a specific focus on potential strategies for making SAW technologies for bioanalytical applications.

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Section: Saw-based Sensorsmentioning

confidence: 99%

Surface acoustic wave devices for chemical sensing and microfluidics: a review and perspective

et al. 2017

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“…In the third example,12 hyperbranched SAW polymers carrying terminal hydrogen‐bond acidic phenol and fluorinated alcohol sensor groups, but no internal sensor groups, gave good responses to the nerve agent simulant DMMP, and the phenol polymers out‐performed the fluorinated alcohol polymers. In the fourth example, a hyperbranched polyester carrying both internal and terminal hydrogen‐bond acidic phenol groups, and coated onto an 80 MHz SAW platform, gave good responses to ammonia 24. In the light of these results, this hyperbranched polyester24, 25 (Fig.…”

Section: Introductionmentioning

confidence: 91%

“…In the fourth example, a hyperbranched polyester carrying both internal and terminal hydrogen‐bond acidic phenol groups, and coated onto an 80 MHz SAW platform, gave good responses to ammonia 24. In the light of these results, this hyperbranched polyester24, 25 (Fig. 1) was selected for further study with DMMP, and also with the explosives simulant dinitrotoluene (DNT).…”

Section: Introductionmentioning

confidence: 99%

Hyperbranched polyesters with internal and exo‐presented hydrogen‐bond acidic sensor groups for surface acoustic wave sensors

Hartmann-Thompson

Keeley

Voit

et al. 2007

J of Applied Polymer Sci

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Three hyperbranched aromatic polyesters carrying both internal and exo-presented hydrogen-bond acidic phenol, carboxylic acid, or mixed phenol/acetoxy groups were coated onto 500 MHz surface acoustic wave (SAW) sensor platforms, and sensor responses to the nerve agent simulant dimethyl methylphosphonate (DMMP) and the explosives simulant dinitrotoluene (DNT) were studied. All three hyperbranched polyesters gave strong responses to DMMP, and the hyperbranched polyester carrying carboxylic acid groups gave a particularly strong response. The hyperbranched polyester carrying phenol groups gave the best response to DNT of the three polymers studied. The DMMP and DNT responses of the three hyperbranched polyesters were also compared with hyperbranched SAW sensor polymers carrying exo-presented phenolic sensor groups only, and also with linear SAW sensor polymers carrying phenolic sensor groups.

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“…This includes the detection of chemical warfare agents, explosives, organic and inorganic vapors, etc. [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ]. The bio-MEMS devices that are frequently used in the field of biomedical applications have transformed lab-on-a-chip research.…”

Section: Introductionmentioning

confidence: 99%

Surface Acoustic Wave (SAW) Sensors: Physics, Materials, and Applications

Mandal

Banerjee

2022

Sensors

174

100

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Surface acoustic waves (SAWs) are the guided waves that propagate along the top surface of a material with wave vectors orthogonal to the normal direction to the surface. Based on these waves, SAW sensors are conceptualized by employing piezoelectric crystals where the guided elastodynamic waves are generated through an electromechanical coupling. Electromechanical coupling in both active and passive modes is achieved by integrating interdigitated electrode transducers (IDT) with the piezoelectric crystals. Innovative meta-designs of the periodic IDTs define the functionality and application of SAW sensors. This review article presents the physics of guided surface acoustic waves and the piezoelectric materials used for designing SAW sensors. Then, how the piezoelectric materials and cuts could alter the functionality of the sensors is explained. The article summarizes a few key configurations of the electrodes and respective guidelines for generating different guided wave patterns such that new applications can be foreseen. Finally, the article explores the applications of SAW sensors and their progress in the fields of biomedical, microfluidics, chemical, and mechano-biological applications along with their crucial roles and potential plans for improvements in the long-term future in the field of science and technology.

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Miniaturized gas monitoring system employing several SAW sensors

Cited by 9 publications

References 7 publications

Surface acoustic wave devices for chemical sensing and microfluidics: a review and perspective

Surface acoustic wave devices for chemical sensing and microfluidics: a review and perspective

Hyperbranched polyesters with internal and exo‐presented hydrogen‐bond acidic sensor groups for surface acoustic wave sensors

Surface Acoustic Wave (SAW) Sensors: Physics, Materials, and Applications

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