A surface acoustic wave ICP sensor with good temperature stability

Zhang, Bing; Hu, Hong; Ye, Aipeng; Zhang, Peng

doi:10.3233/thc-171346

Cited by 5 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various factors are considered in the design of SAW pressure sensors, including resistance to liquid exposure [37,38], resilience to residual stress [29,39], gas detection capabilities [30,31,40], and the impact of circumferential stresses including sensitivity to humidity [41,42]. Choosing an appropriate pressure sensor also requires compensation methods [29,[40][41][42][43][44][45][46][47][48][49][50][51] and optimizing crystal orientation [52,53] to mitigate potential damage from unexpected heat transfer. However, due to the inherent inflexibility of most piezoelectric materials, achieving proper SAW propagation on the curved surfaces demands careful consideration.…”

Section: Surface Acoustic Wave Pressure Sensorsmentioning

confidence: 99%

Frequency shift of a PVDF surface acoustic wave sensor on a curved surface

Masoud,

Aslam,

et al. 2024

Smart Mater. Struct.

View full text Add to dashboard Cite

Wearable sensors have generated a significant attention across various research domains, including the monitoring of human health, pressure sensing, and body health monitoring.Notably, substantial research has been focused on the utilization of piezoelectric sensors for precise pressure measurements in diverse applications, such as medical devices and structural health monitoring. This paper explains the external pressure measurement employing sensors crafted from Polyvinylidene Fluoride (PVDF), known for its remarkable ability to conform consistently to various surface shapes and curvatures. The primary objective of this study is to present an integrated experimental and numerical approach to quantifying the frequency shift of piezoelectric PVDF SAW sensors when deployed on curved surfaces, a crucial step in optimizing their performance for real-world applications. We aim to explain how changes in surface geometry impact frequency shifts concerning external pressure and movement. Our findings reveal a linear relationship between frequency shifts and geometric variations in a certain range, as supported by experimental data. Furthermore, it is observed that PVDF samples can be used to successfully measure the internal pressure of a canister. The consistency between experimental and numerical results underscores the validity and reliability of our approach. In summary, this paper contributes to our understanding of piezoelectric PVDF SAW sensor behavior when placed on curved surfaces. Our novel methodology combines experimental measurements and numerical simulations to quantify the impact of geometric changes on frequency shifts, providing valuable insights for future sensor applications.

show abstract

Section: Surface Acoustic Wave Pressure Sensorsmentioning

confidence: 99%

Frequency shift of a PVDF surface acoustic wave sensor on a curved surface

Masoud,

Aslam,

et al. 2024

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…[ 39 ] The utility of surface acoustic wave ICP sensors capable of wireless and passive information transmission are being explored in patients with hydrocephalus, hypertension, and TBI. [ 40 ]…”

Section: B) Newer Advancements In Neurocritical Carementioning

confidence: 99%

Recent advancements in the practice of neuroanaesthesia and neurocritical care: An update

Sethuraman

Bidkar

Mariappan

et al. 2023

Indian Journal of Anaesthesia

View full text Add to dashboard Cite

The practice of neuroanaesthesia has expanded significantly in recent years to keep up with various challenges posed in the perioperative care of patients for neurosurgical, interventional, neuroradiological, and diagnostic procedures. Technological advancements in neuroscience include the intraoperative use of computed tomography scans and angiograms for vascular neurosurgery, magnetic resonance imaging, neuronavigation, expansion of minimally invasive neurosurgery, neuroendoscopy, stereotaxy, radiosurgery, the performance of increasingly complex procedures, advancements in neurocritical care, etc. Recent advancements in neuroanaesthesia that can meet these challenges include the resurgence of ketamine, opioid-free anaesthesia, total intravenous anaesthesia, techniques to facilitate intraoperative neuromonitoring, awake neurosurgical and spine surgeries, etc. The current review provides an update on the recent advancements in neuroanaesthesia and neurocritical care.

show abstract

“…The drawback of typical highly sensitive SAW sensor architecture is its high sensitivity to external factors such as temperature variations, components tolerance, and ambient pressure. Although a typical SAW sensor has a reference channel (Mujahid and Dickert, 2017;Zhang et al, 2017) to cancel out the influence of these factors, the cancellation does not resolve the problem completely (He et al, 2009). A typical example of the practical situation is the influence of temperature on the sensor response.…”

Section: Introductionmentioning

confidence: 99%

Improved Stability and Performance of Surface Acoustic Wave Nanosensors Using a Digital Temperature Compensation

Balashov

Rocha²,

Hurtado³

et al. 2021

Front. Sens.

View full text Add to dashboard Cite

Surface Acoustic Waves (SAW) sensors are known to be an excellent choice for the measurement of a small concentration of analytes in gas mixtures. The use of this type of sensor has been limited until now in the industrial environment due to the sensitivity of its response to temperature variations. To overcome this problem, thermal stabilization of equipment is normally used. We propose here a simple procedure of compensation of thermal drift in SAW sensors, allowing the measurements to be performed in temperature intervals of up to 20 degrees without any thermal stabilization of the sensitive element of a sensor. By monitoring the temperature of the key points of the sensor and applying the proposed polynomial compensation, it is possible to reduce the influence of thermal instabilities of the ambient temperature to the response more than four times. The method is illustrated by a temperature compensated SAW humidity sensor with a graphene oxide nanofilm as water molecules’ sensitive element. The results show enhanced performance of the sensor over a large temperature interval.

show abstract

A surface acoustic wave ICP sensor with good temperature stability

Abstract: The temperature stability of the sensor has been greatly improved by using the differential compensation method, which validates the effectiveness of the proposed method.

Cited by 5 publications

References 8 publications

Frequency shift of a PVDF surface acoustic wave sensor on a curved surface

Frequency shift of a PVDF surface acoustic wave sensor on a curved surface

Recent advancements in the practice of neuroanaesthesia and neurocritical care: An update

Improved Stability and Performance of Surface Acoustic Wave Nanosensors Using a Digital Temperature Compensation

Contact Info

Product

Resources

About