Evaluation of Photoacoustic Transduction Efficiency of Candle Soot Nanocomposite Transmitters

Chang, Wei-Yi; Zhang, Xu A.; Kim, Jin-Wook; Huang, Wenbin; Bagal, Abhijeet; Chang, Chih‐Hao; Fang, Tiegang; Wu, Hanchang Felix; Jiang, Xiaoning

doi:10.1109/tnano.2018.2845703

Cited by 43 publications

(44 citation statements)

References 32 publications

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“…The initially reported fabrication method involves the transplant of a spin-coated PDMS to the pre-deposited CS layer using two separate glass slides [22], because the uncured PDMS may remove the coated CS during the pouring and spin-coating. Later, it was demonstrated that direct spin-coating of PDMS on the CSdeposited glass does not cause serious damage on the CS layer by reducing the PDMS viscosity (1:100 weight ratio of toluene and PDMS) and gentle pouring [28], [29]. The detailed procedure starts with a flame synthesis using a paraffin wax candle (FIGURE 3A).…”

Section: Fabrication Of Csnp-pdms and Other Composite Transmittersmentioning

confidence: 99%

“…The photoacoustic energy conversion efficiency can be determined by eq. 4, where ρ, c, A, and p denote water density, sound speed of water, the acoustic aperture area which can be considered as the laser beam size, and pressure amplitude measured by a hydrophone, respectively [29]. E a is the acoustic energy, and E optical is the input laser pulse energy.…”

Section: Carbon-composite Transmittersmentioning

confidence: 99%

“…To simplify the carbon-coating procedure compared to the CNT growth method, a candle soot-PDMS composite transmitter (FIGURE 1) was developed. We introduced preliminary study results of CSNP-PDMS in several publications [22], [27]- [29], which present a competitive photoacoustic conversion ratio (4.41×10 −3 Pa/(W/m 2 ) with a simple and cost-efficient fabrication method [22].…”

mentioning

confidence: 99%

“…More than 95% light extinction can be achieved, and an additional absorber coating procedure (e.g. Au-deposition) is not required [29].…”

mentioning

confidence: 99%

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Candle-Soot Carbon Nanoparticles in Photoacoustics: Advantages and Challenges for Laser Ultrasound Transmitters

Kim

Chang

et al. 2019

IEEE Nanotechnology Mag.

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This manuscript provides a review of candle-soot nanoparticle (CSNP) composite laser ultrasound transmitters (LUT), and compares and contrasts this technology to other carboncomposite designs. Among many carbon-based composite LUTs, a CSNP composite has shown its advantages of maximum energy conversion and fabrication simplicity for developing highly efficient ultrasound transmitters. This review focuses on the advantages and challenges of the CSNP-composite transmitter in the aspects of nanostructure design, fabrication procedure, and promising applications. Included are a brief description of the basic principles of the laser ultrasound transmitter, a review of general properties of CSNPs, as well as details on the fabrication method, photoacoustic performance, and design factors. A comparison of the CSNP-nanocomposite to other carbon-nanocomposites is provided. Lastly, representative applications of carbonnanocomposite transmitters and future perspectives on CSNP-composite transmitters are presented. LASER ULTRASOUND TRANSMITTER The photoacoustic or optoacoustic effect refers to the generation of sound waves by absorbed light in a material [1]. Conventional photoacoustic imaging techniques involve

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Section: Fabrication Of Csnp-pdms and Other Composite Transmittersmentioning

confidence: 99%

Section: Carbon-composite Transmittersmentioning

confidence: 99%

mentioning

confidence: 99%

“…More than 95% light extinction can be achieved, and an additional absorber coating procedure (e.g. Au-deposition) is not required [29].…”

mentioning

confidence: 99%

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Candle-Soot Carbon Nanoparticles in Photoacoustics: Advantages and Challenges for Laser Ultrasound Transmitters

Kim

Chang

et al. 2019

IEEE Nanotechnology Mag.

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“…Optical ultrasound sources typically employ Q-switched lasers emitting light pulses with durations of a few nanoseconds, corresponding to optical bandwidths exceeding 100 MHz. This light is converted into ultrasound in an optically absorbing structure; to date the most efficient optical ultrasound generators reported used nanocomposites comprising functionalised multi-walled carbon nanotubes (MWC-NTs) [13], [17] or candle soot particles [18] as optical absorbers. These optical absorbers were embedded in polydimethylsiloxane (PDMS) acting as an elastomeric host with a high thermal expansion coefficient.…”

Section: Introductionmentioning

confidence: 99%

Adaptive All-Optical Ultrasound Imaging Through Temporal Modulation of Excitation Light

Alles

Colchester

Desjardins

2018

2018 IEEE International Ultrasonics Symposium (IUS)

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In this work, we demonstrate how the wide acoustic bandwidths generated by all-optical ultrasound imaging probes can be leveraged to dynamically trade-off image resolution with penetration depth. This dynamic trade-off was achieved through temporal modulation of the excitation light using bandwidthlimited linear chirps. The penetration depth of the all-optical ultrasound imaging probe used here could be arbitrarily set between 2 and 15 mm, to achieve inversely proportional spatial resolutions ranging from 128−500 µm (lateral) and 189−295 µm (axial). This added versatility in image parameters will enable seamless multi-scale ultrasound imaging that can strongly benefit interventional imaging.

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Comparison of Fabrication Methods for Fiber‐Optic Ultrasound Transmitters Using Candle‐Soot Nanoparticles

Bodian

Aytaç-Kipergil

Zhang

et al. 2023

Adv Materials Inter

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Candle‐soot nanoparticles (CSNPs) have shown great promise for fabricating optical ultrasound (OpUS) transmitters. They have a facile, inexpensive synthesis whilst their unique, porous structure enables a fast heat diffusion rate which aids high‐frequency ultrasound generation necessary for high‐resolution clinical imaging. These composites have demonstrated high ultrasound generation performance showing clinically relevant detail, when applied as macroscale OpUS transmitters comprising both concave and planar surfaces, however, less research has been invested into the translation of this material's technology to fabricate fiber‐optic transmitters for image guidance of minimally invasive interventions. Here, are reported two fabrication methods of nanocomposites composed of CSNPs embedded within polydimethylsiloxane (PDMS) deposited onto fiber‐optic end‐faces using two different optimized fabrication methods: “All‐in‐One” and “Direct Deposition.” Both types of nanocomposite exhibit a smooth, black domed structure with a maximum dome thickness of 50 µm, broadband optical absorption (>98% between 500 and 1400 nm) and both nanocomposites generated high peak‐to‐peak ultrasound pressures (>3 MPa) and wide bandwidths (>29 MHz). Further, high‐resolution (<40 µm axial resolution) B‐mode ultrasound imaging of ex vivo lamb brain tissue demonstrating how CSNP‐PDMS OpUS transmitters can allow for high fidelity minimally invasive imaging of biological tissues is demonstrated.

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Evaluation of Photoacoustic Transduction Efficiency of Candle Soot Nanocomposite Transmitters

Cited by 43 publications

References 32 publications

Candle-Soot Carbon Nanoparticles in Photoacoustics: Advantages and Challenges for Laser Ultrasound Transmitters

Candle-Soot Carbon Nanoparticles in Photoacoustics: Advantages and Challenges for Laser Ultrasound Transmitters

Adaptive All-Optical Ultrasound Imaging Through Temporal Modulation of Excitation Light

Comparison of Fabrication Methods for Fiber‐Optic Ultrasound Transmitters Using Candle‐Soot Nanoparticles

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