A Single Cell PMUT as a Bio-Fluid Density Sensor

Roy, Kaustav; Mandal, Avinandan; Ashok, Anuj; Gupta, Harshvardhan; Shastri, Vijayendra; Pratap, Rudra

doi:10.1109/ius46767.2020.9251809

Cited by 16 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using PMUT-based ultrasonic sensor also can be used as a cost-effective sensor for imaging the coagulated lesion. 15,22,[24][25][26][27][28][29] Hence, this simulation study also shows the superiority of photoacoustic imaging as a non-invasive guiding tool for accurately monitoring the lesion area and thermal dose in the coagulated regions.…”

Section: Introductionmentioning

confidence: 61%

“…The growth of the lesion in the coagulated region was monitored using photoacoustic imaging. [13][14][15][16] The reconstructed PA images of the coagulated lesion area were generated using linear array and circular array-based transducer. [17][18][19][20][21][22][23] Both reconstructions are well-matched with the theoretically calculated lesion size.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of HIFU based lesion variation and its monitoring using photoacoustic imaging

Yadav¹,

Paul²,

KS³

et al. 2023

Photons Plus Ultrasound: Imaging and Sensing 2023

View full text Add to dashboard Cite

In the past two decades, High-Intensity Focused Ultrasound (HIFU) has been actively investigated for inducing tissue ablation for tumours, healing arteries and even skin tightening for inducing facelifts. Being a non-contact and non-invasive procedure, HIFU is an attractive alternative over other procedures like radio-frequency ablations and microwave ablations as these are semi-invasive methods. Computer simulations in this domain can provide us with a fast-track way to test and deduce results virtually before conducting related experiments. In this study, we simulated the properties of bovine liver tissue virtually in a MATLAB-based k-Wave toolbox to track lesion variations with varying HIFU on-time and with a constant amount of heat deposition. Photoacoustic reconstructions were also carried out with a linear and circular array of transducers using the simple Delay-And-Sum (DAS) algorithm to access the real-time imaging capability of this technique for HIFU therapy. All the results obtained are discussed and validated. This study will, in general, aid in deciding the HIFU configuration and operational parameters with respect to the tissue type, lesion size, and lesion location within the tissue.

show abstract

Section: Introductionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Simulation of HIFU based lesion variation and its monitoring using photoacoustic imaging

Yadav¹,

Paul²,

KS³

et al. 2023

Photons Plus Ultrasound: Imaging and Sensing 2023

View full text Add to dashboard Cite

show abstract

“…The experiment was carried out in a home-built reflection mode Acoustic Resolution-Photoacoustic Microscope (AR-PAM). 5 A schematic diagram 6 is shown in Fig. 1.…”

Section: Methods 21 Experimental Setupmentioning

confidence: 99%

Ocular imaging of Carassius auratus eyes using photoacoustic microscopy

Samanta¹,

Mathew²,

Paul³

et al. 2023

Photons Plus Ultrasound: Imaging and Sensing 2023

View full text Add to dashboard Cite

The eyes function through the cooperation of different ocular components, and complications with any components would lead to ocular diseases that deteriorate vision. Hence early and precise detection and monitoring of ocular diseases, along with the improved understanding of pathological mechanisms, becomes essential for successful treatment. Photoacoustic Imaging (PAI) is a non-invasive and non-destructive imaging modality based on the photoacoustic effect, which gives high spatial resolution, sensitivity, contrast and penetration depth. Since PAI can provide anatomic and functional ocular characterizations, it can be a potential tool for medical screening/diagnosis of ocular diseases, staging, treatment, and continuous post-treatment monitoring. Here, we perform deep-tissue imaging of the Goldfish (Carassius auratus) eye using a home-built Photoacoustic microscope to identify various ocular components like iris, crystalline lens, retina, optic nerve and blood vessels. The study can be extended to observe changes in these structures under different ophthalmic disease conditions.

show abstract

“…However, a notable limitation for acoustic density sensing was the requirement of a pair of transmitting and receiving electrodes to surround the analyte liquid, which further affected the design and fabrication process. To address this drawback, a single-cell PMUT in a dual-electrode configuration has been developed and analyzed for density sensing [ 99 ]. Roy et al have further developed and investigated the sensing performance of a dual-electrode PMUT integrated with a microfluidic channel to identify the density variation in human blood [ 100 ].…”

Section: Pmut Applicationsmentioning

confidence: 99%

Piezoelectric Micromachined Ultrasonic Transducers (PMUTs): Performance Metrics, Advancements, and Applications

Birjis

Swaminathan

Nazemi

et al. 2022

Sensors

View full text Add to dashboard Cite

With the development of technology, systems gravitate towards increasing in their complexity, miniaturization, and level of automation. Amongst these systems, ultrasonic devices have adhered to this trend of advancement. Ultrasonic systems require transducers to generate and sense ultrasonic signals. These transducers heavily impact the system’s performance. Advancements in microelectromechanical systems have led to the development of micromachined ultrasonic transducers (MUTs), which are utilized in miniaturized ultrasound systems. Piezoelectric micromachined ultrasonic transducers (PMUTs) exhibit higher capacitance and lower electrical impedance, which enhances the transducer’s sensitivity by minimizing the effect of parasitic capacitance and facilitating their integration with low-voltage electronics. PMUTs utilize high-yield batch microfabrication with the use of thin piezoelectric films. The deposition of thin piezoelectric material compatible with complementary metal-oxide semiconductors (CMOS) has opened novel avenues for the development of miniaturized compact systems with the same substrate for application and control electronics. PMUTs offer a wide variety of applications, including medical imaging, fingerprint sensing, range-finding, energy harvesting, and intrabody and underwater communication links. This paper reviews the current research and recent advancements on PMUTs and their applications. This paper investigates in detail the important transduction metrics and critical design parameters for high-performance PMUTs. Piezoelectric materials and microfabrication processes utilized to manufacture PMUTs are discussed. Promising PMUT applications and outlook on future advancements are presented.

show abstract

A Single Cell PMUT as a Bio-Fluid Density Sensor

Cited by 16 publications

References 17 publications

Simulation of HIFU based lesion variation and its monitoring using photoacoustic imaging

Simulation of HIFU based lesion variation and its monitoring using photoacoustic imaging

Ocular imaging of Carassius auratus eyes using photoacoustic microscopy

Piezoelectric Micromachined Ultrasonic Transducers (PMUTs): Performance Metrics, Advancements, and Applications

Contact Info

Product

Resources

About