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Title: Experimental & numerical investigations of ultra-high-speed dynamics of optically-induced droplet vaporization in soft materials Open Access Deposited

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Methodology
  • Briefly, a single pulse is fired by two sequential triggering signals: the first triggers the laser flash lamp and the second fires the Q-switch. As the laser is deposited into a soft hydrogel sample containing phase-shift droplets, the event is illuminated from the back via a 640 nm monochromatic ultra-high-speed strobed diode laser and continuous quartz tungsten-halogen lamp (. The illumination laser is triggered by the high-speed camera sync-out signal. The laser beam/pulse was aligned to the back apparatus of a 20×/0.25 high-power microspot focusing objective using three reflective broadband dielectric mirrors , three short-pass dichroic mirrors, a beam-sampler lens, and a spatial light modulator (SLM). The collected images are processed using an in-house developed MATLAB image processing routine.
Description
  • Images of droplet dynamics during and after optical excitation experiments were recorded in the ultra-fast regime at 1 million frames per second (fps) while the low-speed, quasi-static evolution was carried at 1 fps. During both the inertial and quasi-static phases, we record 1–3 frames in the reference configuration prior to the arrival of the laser-pulse to distinguish the bubble from the background. Lastly, due to the complex physics of plasma formation and chemistry, forward simulations begin at the time when the bubble reaches its maximum expansion
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Depositor
  • babeid@umich.edu
Contact information
Discipline
Funding agency
  • National Institutes of Health (NIH)
  • National Science Foundation (NSF)
  • Other Funding Agency
Other Funding agency
  • startup funding from University of Michigan, Department of Mechanical Engineering (JBE)
ORSP grant number
  • R01HL139656, CMMI2232426
Keyword
Citations to related material
  • Abeid, Bachir A, et al. (2024). Experimental and numerical investigations of ultra-high-speed dynamics of optically induced droplet cavitation in soft materials  
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Last modified
  • 10/14/2024
Published
  • 10/14/2024
Language
DOI
  • https://doi.org/10.7302/yb8v-pp71
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To Cite this Work:
A. Abeid, B., L. Fabiilli, M., Aliabouzar, M., Estrada, J. B. (2024). Experimental & numerical investigations of ultra-high-speed dynamics of optically-induced droplet vaporization in soft materials [Data set], University of Michigan - Deep Blue Data. https://doi.org/10.7302/yb8v-pp71

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Files (Count: 5; Size: 5.83 GB)

Date: 11 October 2024

Dataset Title: Experimental & numerical investigations of ultra-high-speed dynamics of optically induced droplet cavitation in soft materials

Dataset Creators: Bachir A. Abeid, Mario L. Fabiilli, Mitra Aliabouzar, Jon B. Estrada

Dataset Contact: Bachir A. Abeid babeid@umich.edu

Funding: NIH Grant R01HL139656 (MLF), startup funding from University of Michigan - Department of Mechanical Engineering (JBE),funding for experimental platform development from NSF grant CMMI2232426 (JBE)

Key Points:
- We examined effects such as droplet size and PFC core on bubble dynamics and material viscoelastic properties within three different hydrogels, each of different concentrations.
- Gelatin hydrogels reveal concentration-dependent impacts on bubble expansion and material elasticity.
- Embedding PFC droplets in gelatin increases internal pressure, resulting in higher equilibrium radius and continuous bubble growth during quasi-static evolution.
- Similar trends are observed in fibrin and polyacrylamide matrices, with differences in bubble behavior attributed to matrix properties and droplet presence.
- Droplet size exhibits minimal impact on bubble expansion during inertial dynamics but influences quasi-static evolution, with larger droplets leading to continuous growth beyond 60 seconds.
- The core composition of PFC droplets significantly affects bubble behavior, with higher boiling point droplets exhibiting higher maximum expansion and faster quasi-static dissolution rates.

Research Overview:
Perfluorocarbon (PFC) droplets represent a novel class of phase-shift contrast agent with a promise in applications in biomedical and bioengineering fields. PFC droplets undergo a fast liquid-gas transition upon exposure to acoustic or optical triggering,
offering a potential adaptable and versatile tool as contrast agent in diagnostics imaging and localized drug delivery vehicles in therapeutics systems. In this paper, we utilize advanced imaging techniques to investigate ultra-high-speed inertial dynamics and
rectified quasi-static (low-speed) diffusion evolution of optically induced PFC droplet vaporization. The study sheds light on the intricate interplay between droplet characteristics, matrix properties, and multi-timescale bubble dynamics, offering valuable insights into their behavior within biomimetic hydrogels.

Methodology:
The data are the output of the microcavitation experimental setup, which generates and records single, sub-millimeter laser-induced cavitation (LIC) bubble events at 1 million fps in soft hydrogels and materials using a combination of single 4 ns pulses of a user-adjustable,
frequencydoubled Q-switched 532 nm Nd:YAG laser (Continuum Minilite II, San Jose, CA), an ultra-high-speed imaging camera (HPV-X2; Shimadzu, Kyoto, Japan) and a low-speed imaging camera (FLIR).

Instrument and/or Software specifications: Videos where processed using Matlab R2023a

Files contained here:
Matlab file (.mat) include all processed experiments.

Three folders contain raw AVI videos.
The videos names end in time(HH_MM_SS). The prefixes are described below.

AVI24_Gelatin
- Geletin_05w_w : 05% Native Gelatin
- Geletin_10w_w : 10% Native Gelatin
- Geletin_15w_w : 15% Native Gelatin
- pfh_12_Gel_10w_w : 10% Gelatin with 12 um diameter PFH droplets
- pfo_12_Gel_10w_w : 10% Gelatin with 12 um diameter PF0 droplets
- pfp_3_Gel_10w_w : 10% Gelatin with 3 um diameter PFP droplets
- pfp_6_Gel_10w_w : 10% Gelatin with 6 um diameter PFP droplets
- pfp_Gelat_05w_w : 05% Gelatin with 12 um diameter PFP droplets
- pfp_Gelat_10w_w : 10% Gelatin with 12 um diameter PFP droplets
- pfp_Gelat_15w_w : 15% Gelatin with 12 um diameter PFP droplets

AVI24_Fibrin
- Fib_02_10X : 0.2% Native Fibrin
- Fib_02_10X_pfp : 0.2% Fibrin with 6 um diameter PFP droplets
- Fib_01_10X : 1% Native Fibrin
- Fib_01_10X_pfp : 1% Fibrin with 6 um diameter PFP droplets
- Fib_04_10X : 4% Native Fibrin
- Fib_04_10X_pfp : 4% Fibrin with 6 um diameter PFP droplets

AVI24_PA
PA_B_S1 : 3/0.1 Native Polyacrylamide (Acry/Bis %)
PA_B_pfp_S1 : 3/0.1 Polyacrylamide (Acry/Bis %) with 6 um diameter PFP droplets
PA_D_S1 : 5/0.15 Native Polyacrylamide (Acry/Bis %)
PA_D_pfp_S1 : 5/0.15 Polyacrylamide (Acry/Bis %) with 6 um diameter PFP droplets
PA_E_S1 : 5/0.3 Native Polyacrylamide (Acry/Bis %)
PA_E_pfp_S1 : 5/0.3 Polyacrylamide (Acry/Bis %) with 6 um diameter PFP droplets
PA_F_S1 : 8/0.26 Native Polyacrylamide (Acry/Bis %)
PA_F_pfp_S1 : 8/0.26 Polyacrylamide (Acry/Bis %) with 6 um diameter PFP droplets

Each files has the following variables:

Roft = Bubble radius during inertial dynamics in (m)
t = time during inertial dynamics in (s)
t_norm = Normalized time
R_norm = Normalized Radius
t0 = maximum expansion time (s)
R0 = Maximum expansion (m)
Req = equilibrium radius during inertial dynamics in (m)
Related publication(s):
Abeid, Bachir A, et al. (2024). Experimental and numerical investigations of ultra-high-speed dynamics of optically induced droplet cavitation in soft materials  

Use and Access:
This data set is made available under a Creative Commons Public Domain license (CC0 1.0).

To Cite Data:
Bachir A. Abeid, Mario L. Fabiilli, Mitra Aliabouzar, Jon B. Estrada. (2024). Experimental and numerical investigations of ultra-high-speed dynamics of optically induced droplet cavitation in soft materials [Data set]. University of Michigan - Deep Blue. https://doi.org/10.7302/yb8v-pp71

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