Développement par compression de l'électricité polaire dans les cristaux hémièdres à faces inclinées

Curie, Jacques; Curie, Pierre

doi:10.3406/bulmi.1880.1564

Cited by 375 publications

(293 citation statements)

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“…Figure 2a is the model of Eq. (1). For this elastic film-coated quartz crystal the resonant frequency changes as the mass changes, whereas the resonant resistance is not altered, because there is no energy loss in the film.…”

Section: Principlementioning

confidence: 97%

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Quartz-crystal sensors for biosensing and chemical analysis

Muramatsu

Kim

Chang

2002

Analytical and Bioanalytical Chemistry

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The principle and applications of quartz-crystal sensors based on the three basic concepts for mass, viscosity, and viscoelastic changes are reported. In the general discussion the realization of a resonant frequency-resonant resistance diagram is described in detail. As an example of application to mass sensing, gas sensing with a carbon-coated quartz crystal is reported. Determination of the blood coagulation factor is used as an example of the application to viscosity sensing. As an example of viscoelastic measurement, an ion-exchange polymer-coated quartz crystal is investigated to show that viscoelasticity changes more than mass in the transport process. The possibility of developing new biosensors and chemical sensors is discussed on the basis of these results.

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Section: Principlementioning

confidence: 97%

“…Piezoelectricity was observed by Pierre and Jacques Curie in 1880 [1]. Compression of a quartz crystal produced an electric potential.…”

Section: Introductionmentioning

confidence: 95%

Quartz-crystal sensors for biosensing and chemical analysis

Muramatsu

Kim

Chang

2002

Analytical and Bioanalytical Chemistry

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“…By employing the piezoelectric effect, which is a long-known phenomenon, electrical energy is converted by the transmitter into mechanical energy in the form of acoustical waves. (15) Properties such as frequency (in the 1-30 kHz range) and amplitude of a sweep of acoustic waves with different wavelengths are modulated by the physical properties and geometry of objects with which the waves interact on their way to the receiver, where the mechanical energy is converted back to electrical energy employing the same piezoelectric effect. In the output spectrum thus obtained, signals only become distinguishable (up to two orders of magnitude above the noise level) when a resonance condition determined by the fill and the fill level is reached.…”

Section: Acoustic and Ultrasonic Detection Methodsmentioning

confidence: 99%

Detection and Screening of Chemicals Related to the Chemical Weapons Convention

Murray

2000

Encyclopedia of Analytical Chemistry

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Spurred by recent events, there is an ever‐growing interest in the detection of hazardous chemicals in both military and civilian contexts. The threat of chemical weapons has spread from the battlefield to cities and towns due to the threat of international terrorism. Detection of hazardous chemicals and now chemical weapons is a requirement for first responders of all sorts. While a plethora of devices and materials exist, they all have certain inherent weaknesses and no one device can be relied upon to give an unambiguous response. As usual in chemical detection, two orthogonal methods give a much higher confidence than does any single method. This article identifies hazardous chemicals identified by the Chemical Weapons Convention and provides a description of materials and devices for sensing and responding to chemical agent contamination and releases. It comparatively evaluates current and near‐term sensor options for detecting the most likely current threats. It also identifies sensor technologies that may be capable of responding to a wider range of substances (e.g., hazardous industrial chemicals and new chemical warfare agents) to provide options for coping with new threats as they develop. Previous research results on the principal background contaminants that have the potential of introducing unwanted false alarms in chemical agent detection systems are collated, and techniques that may be capable of reducing the impact of toxic material releases are suggested.

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“…The origins of medical diagnostic ultrasound and echocardiography date back to the discovery of piezoelectricity in 1880 by Pierre and Jacques Curie [2,3]. Modern day echocardiography transducers emit and receive ultrasound waves using crystals with piezoelectric properties, commonly lead zirconate titanate.…”

Section: Early Evolution Of Echocardiographymentioning

confidence: 99%