A PMUT based photoacoustic system as a microfluidic concentration detector

Roy, Kaustav; Shastri, Vijayendra; Kumar, Akshay; Rout, Jagi; NA, Isha; Kalyan, Kritank; Prakash, Jaya; Pratap, Rudra

doi:10.1117/12.2608934

Cited by 7 publications

(5 citation statements)

References 41 publications

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“…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: 63%

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

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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.

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Section: Introductionmentioning

confidence: 63%

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

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show abstract

“…MEMS finds applications in a broad range of areas, such as medical technology, [ 214 , 215 , 216 ] telecommunications, [ 217 ] consumer electronics, [ 218 ] and automotive systems. [ 219 ] Innovations like inertial measurement units [ 220 ] in smartphones, pressure sensors [ 221 ] in cars, micro‐mirrors [ 222 ] in projection systems, and MUTs [ 223 , 224 , 225 , 226 , 227 , 228 , 229 , 230 , 231 , 232 ] as fingerprint sensors/medical imaging systems all demonstrate the transformative power of MEMS technology.…”

Section: Progress In the Mof Applicationsmentioning

confidence: 99%

Advances and Applications of Metal‐Organic Frameworks (MOFs) in Emerging Technologies: A Comprehensive Review

Li,

Yadav,

Zhou

et al. 2023

Global Challenges

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Metal‐organic frameworks (MOFs) that are the wonder material of the 21st century consist of metal ions/clusters coordinated to organic ligands to form one‐ or more‐dimensional porous structures with unprecedented chemical and structural tunability, exceptional thermal stability, ultrahigh porosity, and a large surface area, making them an ideal candidate for numerous potential applications. In this work, the recent progress in the design and synthetic approaches of MOFs and explore their potential applications in the fields of gas storage and separation, catalysis, magnetism, drug delivery, chemical/biosensing, supercapacitors, rechargeable batteries and self‐powered wearable sensors based on piezoelectric and triboelectric nanogenerators are summarized. Lastly, this work identifies present challenges and outlines future opportunities in this field, which can provide valuable references.

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“…The sensing principle was based on the shift in resonant frequency of PMUT resulting from the variation of the sensor's effective mass while exposed to the target gas molecules. Roy et al [147] developed a PMUT-based optofluidic platform to measure the concentration of various species dissolved in a fluid. The PZT-based PMUT was used as photoacoustic receiver, which received ultrasonic signals from fluid targets present in microfluidic channels while illuminated with a nanosecond pulsed laser.…”

Section: Chemical and Bio-sensingmentioning

confidence: 99%

Piezoelectric Micromachined Ultrasound Transducer Technology: Recent Advances and Applications

Wan

Jiang

et al. 2022

Biosensors

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The objective of this article is to review the recent advancement in piezoelectric micromachined ultrasound transducer (PMUT) technology and the associated piezoelectric materials, device fabrication and characterization, as well as applications. PMUT has been an active research topic since the late 1990s because of the ultrasound application needs of low cost large 2D arrays, and the promising progresses on piezoelectric thin films, semiconductors, and micro/nano-electromechanical system technology. However, the industrial and medical applications of PMUTs have not been very significant until the recent success of PMUT based fingerprint sensing, which inspired growing interests in PMUT research and development. In this paper, recent advances of piezoelectric materials for PMUTs are reviewed first by analyzing the material properties and their suitability for PMUTs. PMUT structures and the associated micromachining processes are next reviewed with a focus on the complementary metal oxide semiconductor compatibility. PMUT prototypes and their applications over the last decade are then summarized to show the development trend of PMUTs. Finally, the prospective future of PMUTs is discussed as well as the challenges on piezoelectric materials, micro/nanofabrication and device integration.

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A PMUT based photoacoustic system as a microfluidic concentration detector

Cited by 7 publications

References 41 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

Advances and Applications of Metal‐Organic Frameworks (MOFs) in Emerging Technologies: A Comprehensive Review

Piezoelectric Micromachined Ultrasound Transducer Technology: Recent Advances and Applications

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