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Wang L, Sheng M, Chen L, Yang F, Li C, Li H, Nie P, Lv X, Guo Z, Cao J, Wang X, Li L, Hu AL, Guan D, Du J, Cui H, Zheng X. Sub-Nanogram Resolution Measurement of Inertial Mass and Density Using Magnetic-Field-Guided Bubble Microthruster. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403867. [PMID: 38773950 DOI: 10.1002/advs.202403867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/12/2024] [Indexed: 05/24/2024]
Abstract
Artificial micro/nanomotors using active particles hold vast potential in applications such as drug delivery and microfabrication. However, upgrading them to micro/nanorobots capable of performing precise tasks with sophisticated functions remains challenging. Bubble microthruster (BMT) is introduced, a variation of the bubble-driven microrobot, which focuses the energy from a collapsing microbubble to create an inertial impact on nearby target microparticles. Utilizing ultra-high-speed imaging, the microparticle mass and density is determined with sub-nanogram resolution based on the relaxation time characterizing the microparticle's transient response. Master curves of the BMT method are shown to be dependent on the viscosity of the solution. The BMT, controlled by a gamepad with magnetic-field guidance, precisely manipulates target microparticles, including bioparticles. Validation involves measuring the polystyrene microparticle mass and hollow glass microsphere density, and assessing the mouse embryo mass densities. The BMT technique presents a promising chip-free, real-time, highly maneuverable strategy that integrates bubble microrobot-based manipulation with precise bioparticle mass and density detection, which can facilitate microscale bioparticle characterizations such as embryo growth monitoring.
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Affiliation(s)
- Leilei Wang
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Minjia Sheng
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Li Chen
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Fengchang Yang
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chenlu Li
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Hangyu Li
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Pengcheng Nie
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xinxin Lv
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Zheng Guo
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Jialing Cao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Xiaohuan Wang
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Long Li
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Anthony L Hu
- The High School Affiliated to Renmin University of China, Beijing, 100080, China
| | - Dongshi Guan
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Du
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Haihang Cui
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Xu Zheng
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
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Ambekar PA, Wang YN, Khokhlova T, Bruce M, Leotta DF, Totten S, Maxwell AD, Chan K, Liles WC, Dellinger EP, Monsky W, Adedipe AA, Matula TJ. Comparative Study of Histotripsy Pulse Parameters Used to Inactivate Escherichia coli in Suspension. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:2451-2458. [PMID: 37718123 PMCID: PMC10591824 DOI: 10.1016/j.ultrasmedbio.2023.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/07/2023] [Accepted: 08/05/2023] [Indexed: 09/19/2023]
Abstract
OBJECTIVE Bacterial loads can be effectively reduced using cavitation-mediated focused ultrasound, or histotripsy. In this study, gram-negative bacteria (Escherichia coli) in suspension were used as model bacteria to evaluate the effectiveness of two regimens of histotripsy treatments: cavitation histotripsy (CH) and boiling histotripsy (BH). METHODS Ten-milliliter volumes of Escherichia coli were treated at different negative focal pressure amplitudes and over time periods up to 40 min. Cavitation activity was characterized with coaxial passive cavitation detection (PCD) and synchronized plane wave B-mode imaging. RESULTS CH treatments exhibited a threshold behavior that was consistent with PCD metrics of cavitation. Above the threshold, bacterial inactivation followed a monotonically increasing log-linear relationship that indicated an exponential inactivation rate. BH exhibited no threshold, but instead followed a different monotonically increasing inactivation rate. Inactivation rates were larger for BH at or below the CH threshold, and larger for CH substantially above the threshold. CH studies performed at different pulse lengths at the same duty cycle had similar inactivation rates, suggesting that at any given pressure amplitude, the "on time" was the most important variable for inactivating E. coli. The maximum inactivation was produced by CH at the highest pressure amplitudes used, leading to a log reduction >4.2 for a 40 min treatment. CONCLUSION The results of this study suggest that both CH and BH can be used to inactivate E. coli in suspension, with the optimal regimen depending on the attainable peak negative focal pressure at the target.
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Affiliation(s)
- Pratik A Ambekar
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Yak-Nam Wang
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Tatiana Khokhlova
- Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Matthew Bruce
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Daniel F Leotta
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Stephanie Totten
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Adam D Maxwell
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Keith Chan
- Vantage Radiology and Diagnostic Services, Renton, WA, USA
| | - W Conrad Liles
- Department of Medicine, University of Washington, Seattle, WA, USA; Sepsis Center of Research Excellence-UW (SCORE-UW), University of Washington, Seattle, WA, USA
| | | | - Wayne Monsky
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Adeyinka A Adedipe
- Department of Emergency Medicine, University of Washington, Seattle, WA, USA
| | - Thomas J Matula
- Applied Physics Laboratory, University of Washington, Seattle, WA, USA.
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Jezeršek M, Molan K, Terlep S, Levičnik-Höfferle Š, Gašpirc B, Lukač M, Stopar D. The evolution of cavitation in narrow soft-solid wedge geometry mimicking periodontal and peri-implant pockets. ULTRASONICS SONOCHEMISTRY 2023; 94:106329. [PMID: 36801675 PMCID: PMC9945771 DOI: 10.1016/j.ultsonch.2023.106329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/27/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
In periodontology and implantology, laser-induced cavitation has not yet been used to treat biofilm-related problems. In this study we have checked how soft tissue affects the evolution of cavitation in a wedge model representing periodontal and peri-implant pocket geometry. One side of the wedge model was composed of PDMS mimicking soft periodontal or peri-implant biological tissue, the other side was composed of glass mimicking hard tooth root or implant surface, which allowed observations of the cavitation dynamics with an ultrafast camera. Different laser pulse modalities, PDMS stiffness, and irrigants were tested for their effect on the evolution of cavitation in the narrow wedge geometry. The PDMS stiffness varied in a range that corresponds to severely inflamed, moderately inflamed, or healthy gingival tissue as determined by a panel of dentists. The results imply that deformation of the soft boundary has a major effect on the Er:YAG laser-induced cavitation. The softer the boundary, the less effective the cavitation. We show that in a stiffer gingival tissues model, photoacoustic energy can be guided and focused at the tip of the wedge model, where it enables generation of secondary cavitation and more effective microstreaming. The secondary cavitation was absent in severely inflamed gingival model tissue, but could be induced with a dual-pulse AutoSWEEPS laser modality. This should in principle increase cleaning efficiency in the narrow geometries such as those found in the periodontal and peri-implant pockets and may lead to more predictable treatment outcomes.
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Affiliation(s)
- Matija Jezeršek
- University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva cesta 6, 1000 Ljubljana
| | - Katja Molan
- University of Ljubljana, Biotechnical Faculty, Department of Microbiology, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Saša Terlep
- Fotona d.o.o., Stegne 7, 1000 Ljubljana, Slovenia
| | | | - Boris Gašpirc
- University of Ljubljana, Medical Faculty, Department of Oral Medicine and Periodontology, Vrazov trg 2, 1000 Ljubljana
| | - Matjaž Lukač
- Institut Jozef Stefan, Jamova 39, 1000 Ljubljana, Slovenia
| | - David Stopar
- University of Ljubljana, Biotechnical Faculty, Department of Microbiology, Večna pot 111, 1000 Ljubljana, Slovenia.
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Zheng X, Wang X, Ding Z, Li A, Lu X, Zhang Y, Zhang Y. Investigation on the cavitation bubble collapse and the movement characteristics near spherical particles based on Weiss theorem. ULTRASONICS SONOCHEMISTRY 2023; 93:106301. [PMID: 36669430 PMCID: PMC9850427 DOI: 10.1016/j.ultsonch.2023.106301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/25/2022] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
In this paper, the cavitation bubble dynamics near two spherical particles of the same size are investigated theoretically and experimentally. According to the Weiss theorem, the flow characteristics and the Kelvin impulse are obtained and supported by the sufficient experimental data. In terms of the initial bubble position, the bubble size and the distance between the two particles, the collapse morphology and the movement characteristics of the bubble are revealed in detail. The main findings include: (1) Based on a large number of experimental results, it is found that the Kelvin impulse theoretical model established in this paper can effectively predict the movement characteristics of the cavitation bubble near two particles of the same size. (2) When the initial bubble position is gradually away from the particles along the horizontal symmetry axis near two particles of the same size, the movement distance of the bubble centroid in the first period increases first and then decreases. (3) When the initial position of the bubble centroid is at the asymmetric position near the two particles, the movement direction of the bubble centroid is biased towards the particle closer to the bubble, but not towards the center of this particle.
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Affiliation(s)
- Xiaoxiao Zheng
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Xiaoyu Wang
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhiling Ding
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China; College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China
| | - Angjun Li
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China; College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China
| | - Xuan Lu
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China; College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China
| | - Yuning Zhang
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China.
| | - Yuning Zhang
- College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China.
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5
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Robles V, Gonzalez-Parra JC, Cuando-Espitia N, Aguilar G. The effect of scalable PDMS gas-entrapping microstructures on the dynamics of a single cavitation bubble. Sci Rep 2022; 12:20379. [DOI: 10.1038/s41598-022-24746-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022] Open
Abstract
AbstractThe effect of gas-entrapping polydimethylsiloxane (PDMS) microstructures on the dynamics of cavitation bubbles laser-induced next to the PDMS surface is investigated and compared against the cavitation dynamics next to a flat smooth boundary. Local pressure gradients produced by a cavitation bubble cause the air pockets entrapped in the PDMS microstructures to expand and oscillate, leading to a repulsion of the cavitation bubble. The microstructures were fabricated as boxed crevices via a simple and scalable laser ablation technique on cast acrylic, allowing for testing of variable structure sizes and reusable molds. The bubble dynamics were observed using high speed photography and the surrounding flows were visualized and quantified using particle tracking velocimetry. Smaller entrapped air pockets showed an enhanced ability to withstand deactivation at three stand-off distances and over 50 subsequent cavitation events. This investigation provides insight into the potential to direct the collapse of a cavitation bubble away from a surface to mitigate erosion or to enhance microfluidic mixing in low Reynolds number flows.
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Chen P, Eifert J, Jung S, Strawn LK, Li H. Microbubbles Remove Listeria monocytogenes from the Surface of Stainless Steel, Cucumber, and Avocado. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8203. [PMID: 36431688 PMCID: PMC9697132 DOI: 10.3390/ma15228203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Fresh produce may be contaminated by bacterial pathogens, including Listeria monocytogenes, during harvesting, packaging, or transporting. A low-intensity cavitation process with air being injected into water was studied to determine the microbubbles' efficiency when detaching L. monocytogenes from stainless steel and the surface of fresh cucumber and avocado. Stainless steel coupons (1″ × 2″), cucumber, and avocado surfaces were inoculated with L. monocytogenes (LCDC strain). After 1, 24 or 48 h, loosely attached cells were washed off, and inoculated areas were targeted by microbubbles (~0.1-0.5 mm dia.) through a bubble diffuser (1.0 L air/min) for 1, 2, 5, or 10 min. For steel, L. monocytogenes (48 h drying) detachment peaked at 2.95 mean log reduction after 10 min of microbubbles when compared to a no-bubble treatment. After 48 h pathogen drying, cucumbers treated for 10 min showed a 1.78 mean log reduction of L. monocytogenes. For avocados, L. monocytogenes (24 h drying) detachment peaked at 1.65 log reduction after 10 min of microbubbles. Microbubble applications may be an effective, economical, and environmentally friendly way to remove L. monocytogenes, and possibly other bacterial pathogens, from food contact surfaces and the surfaces of whole, intact fresh produce.
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Affiliation(s)
- Pengyu Chen
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24061, USA
| | - Joseph Eifert
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24061, USA
| | - Sunghwan Jung
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Laura K. Strawn
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24061, USA
| | - Haofu Li
- Department of Food Science and Technology, Virginia Tech, Blacksburg, VA 24061, USA
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Tang J, Hu R, Liu H, Mo Z, Sun L. Numerical investigation of thermally controlled bubble condensation near a solid wall. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang L, Chen L, Zheng X, Yu Z, Lv W, Sheng M, Wang L, Nie P, Li H, Guan D, Cui H. Multimodal Bubble Microrobot Near an Air-Water Interface. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203872. [PMID: 36045100 DOI: 10.1002/smll.202203872] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/09/2022] [Indexed: 05/27/2023]
Abstract
The development of multifunctional and robust swimming microrobots working at the free air-liquid interface has encountered challenge as new manipulation strategies are needed to overcome the complicated interfacial restrictions. Here, flexible but reliable mechanisms are shown that achieve a remote-control bubble microrobot with multiple working modes and high maneuverability by the assistance of a soft air-liquid interface. This bubble microrobot is developed from a hollow Janus microsphere (JM) regulated by a magnetic field, which can implement switchable working modes like pusher, gripper, anchor, and sweeper. The collapse of the microbubble and the accompanying directional jet flow play a key role for functioning in these working modes, which is analogous to a "bubble tentacle." Using a simple gamepad, the orientation and the navigation of the bubble microrobot can be easily manipulated. In particular, a speed modulation method is found for the bubble microrobot, which uses vertical magnetic field to control the orientation of the JM and the direction of the bubble-induced jet flow without changing the fuel concentration. The findings demonstrate a substantial advance of the bubble microrobot specifically working at the air-liquid interface and depict some nonintuitive mechanisms that can help develop more complicated microswimmers.
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Affiliation(s)
- Leilei Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Science, Beijing, 100190, China
| | - Li Chen
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Xu Zheng
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Science, Beijing, 100190, China
| | - Zexiong Yu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Wenchao Lv
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Minjia Sheng
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Lina Wang
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Pengcheng Nie
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Science, Beijing, 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hangyu Li
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Science, Beijing, 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dongshi Guan
- State Key Laboratory of Nonlinear Mechanics, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Science, Beijing, 100190, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Haihang Cui
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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Wang X, Wu G, Zheng X, Du X, Zhang Y, Zhang Y. Theoretical investigation and experimental support for the cavitation bubble dynamics near a spherical particle based on Weiss theorem and Kelvin impulse. ULTRASONICS SONOCHEMISTRY 2022; 89:106130. [PMID: 36007327 PMCID: PMC9424607 DOI: 10.1016/j.ultsonch.2022.106130] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/09/2022] [Accepted: 08/17/2022] [Indexed: 05/05/2023]
Abstract
In the present paper, the laser-induced cavitation bubble dynamics near a fixed spherical particle is comprehensively investigated based on the Weiss theorem, the Kelvin impulse theory and the high-speed photography experiment. Firstly, the applicability range of the theoretical model in the time and the space is statistically obtained based on sufficient experimental results. Then, the in-depth theoretical analysis is carried out in terms of the liquid flow field and the bubble Kelvin impulse with the corresponding experimental results as the reasonable support. In addition, the theoretical prediction model of the bubble movement is established and experimentally fitted from the analytic expression of the Kelvin impulse. Through our research, it is found that: (1) the applicability range of the Kelvin impulse theory for the bubble near the spherical particle is approximately the dimensionless distance between the bubble and particle (γ) greater than 0.50. (2) The effect of the particle on the liquid velocity between the bubble and the particle is mainly manifested in the form of the image bubble, which always causes the liquid velocity in this region to be significantly lower than other surrounding regions. (3) The average movement velocity of the bubble centroid can be reasonably predicted by establishing a directly proportional function between the Kelvin impulse and the velocity with the relationship constant (α) equal to 3.57×10-6 ± 1.63×10-7 kg.
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Affiliation(s)
- Xiaoyu Wang
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Guanhao Wu
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Xiaoxiao Zheng
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Xuan Du
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Yuning Zhang
- Key Laboratory of Power Station Energy Transfer Conversion and System (Ministry of Education), School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China.
| | - Yuning Zhang
- College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China
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10
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Biomechanical Sensing Using Gas Bubbles Oscillations in Liquids and Adjacent Technologies: Theory and Practical Applications. BIOSENSORS 2022; 12:bios12080624. [PMID: 36005019 PMCID: PMC9406219 DOI: 10.3390/bios12080624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/06/2022] [Accepted: 08/07/2022] [Indexed: 11/17/2022]
Abstract
Gas bubbles present in liquids underpin many natural phenomena and human-developed technologies that improve the quality of life. Since all living organisms are predominantly made of water, they may also contain bubbles—introduced both naturally and artificially—that can serve as biomechanical sensors operating in hard-to-reach places inside a living body and emitting signals that can be detected by common equipment used in ultrasound and photoacoustic imaging procedures. This kind of biosensor is the focus of the present article, where we critically review the emergent sensing technologies based on acoustically driven oscillations of bubbles in liquids and bodily fluids. This review is intended for a broad biosensing community and transdisciplinary researchers translating novel ideas from theory to experiment and then to practice. To this end, all discussions in this review are written in a language that is accessible to non-experts in specific fields of acoustics, fluid dynamics and acousto-optics.
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Seyedmirzaei Sarraf S, Rokhsar Talabazar F, Namli I, Maleki M, Sheibani Aghdam A, Gharib G, Grishenkov D, Ghorbani M, Koşar A. Fundamentals, biomedical applications and future potential of micro-scale cavitation-a review. LAB ON A CHIP 2022; 22:2237-2258. [PMID: 35531747 DOI: 10.1039/d2lc00169a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Thanks to the developments in the area of microfluidics, the cavitation-on-a-chip concept enabled researchers to control and closely monitor the cavitation phenomenon in micro-scale. In contrast to conventional scale, where cavitation bubbles are hard to be steered and manipulated, lab-on-a-chip devices provide suitable platforms to conduct smart experiments and design reliable devices to carefully harness the collapse energy of cavitation bubbles in different bio-related and industrial applications. However, bubble behavior deviates to some extent when confined to micro-scale geometries in comparison to macro-scale. Therefore, fundamentals of micro-scale cavitation deserve in-depth investigations. In this review, first we discussed the physics and fundamentals of cavitation induced by tension-based as well as energy deposition-based methods within microfluidic devices and discussed the similarities and differences in micro and macro-scale cavitation. We then covered and discussed recent developments in bio-related applications of micro-scale cavitation chips. Lastly, current challenges and future research directions towards the implementation of micro-scale cavitation phenomenon to emerging applications are presented.
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Affiliation(s)
- Seyedali Seyedmirzaei Sarraf
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
| | - Farzad Rokhsar Talabazar
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
| | - Ilayda Namli
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
| | - Mohammadamin Maleki
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
| | - Araz Sheibani Aghdam
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
| | - Ghazaleh Gharib
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics (EFSUN), Sabanci University, Orhanli, 34956, Tuzla, Istanbul, Turkey
| | - Dmitry Grishenkov
- Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, SE-141 57 Stockholm, Sweden
| | - Morteza Ghorbani
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics (EFSUN), Sabanci University, Orhanli, 34956, Tuzla, Istanbul, Turkey
| | - Ali Koşar
- Faculty of Engineering and Natural Science, Sabanci University, 34956 Tuzla, Istanbul, Turkey.
- Sabanci University Nanotechnology Research and Application Center, 34956 Tuzla, Istanbul, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics (EFSUN), Sabanci University, Orhanli, 34956, Tuzla, Istanbul, Turkey
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12
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Zevnik J, Dular M. Cavitation bubble interaction with compliant structures on a microscale: A contribution to the understanding of bacterial cell lysis by cavitation treatment. ULTRASONICS SONOCHEMISTRY 2022; 87:106053. [PMID: 35690044 PMCID: PMC9190065 DOI: 10.1016/j.ultsonch.2022.106053] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 05/09/2023]
Abstract
Numerous studies have already shown that the process of cavitation can be successfully used for water treatment and eradication of bacteria. However, most of the relevant studies are being conducted on a macro scale, so the understanding of the processes at a fundamental level remains poor. In attempt to further elucidate the process of cavitation-assisted water treatment on a scale of a single bubble, the present paper numerically addresses interaction between a collapsing microbubble and a nearby compliant structure, that mechanically and structurally resembles a bacterial cell. A fluid-structure interaction methodology is employed, where compressible multiphase flow is considered and the bacterial cell wall is modeled as a multi-layered shell structure. Simulations are performed for two selected model structures, each resembling the main structural features of Gram-negative and Gram-positive bacterial cell envelopes. The contribution of two independent dimensionless geometric parameters is investigated, namely the bubble-cell distance δ and their size ratio ς. Three characteristic modes of bubble collapse dynamics and four modes of spatiotemporal occurrence of peak local stresses in the bacterial cell membrane are identified throughout the parameter space considered. The former range from the development of a weak and thin jet away from the cell to spherical bubble collapses. The results show that local stresses arising from bubble-induced loads can exceed poration thresholds of cell membranes and that bacterial cell damage could be explained solely by mechanical effects in absence of thermal and chemical ones. Based on this, the damage potential of a single microbubble for bacteria eradication is estimated, showing a higher resistance of the Gram-positive model organism to the nearby bubble collapse. Microstreaming is identified as the primary mechanical mechanism of bacterial cell damage, which in certain cases may be enhanced by the occurrence of shock waves during bubble collapse. The results are also discussed in the scope of bacteria eradication by cavitation treatment on a macro scale, where processes of hydrodynamic and ultrasonic cavitation are being employed.
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Affiliation(s)
- Jure Zevnik
- University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva cesta 6, Ljubljana, Slovenia.
| | - Matevž Dular
- University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva cesta 6, Ljubljana, Slovenia
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13
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Dockar D, Gibelli L, Borg MK. Shock-induced collapse of surface nanobubbles. SOFT MATTER 2021; 17:6884-6898. [PMID: 34231638 DOI: 10.1039/d1sm00498k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The collapse of cavitation bubbles often releases high-speed liquid jets capable of surface damage, with applications in drug delivery, cancer treatment, and surface cleaning. Spherical cap-shaped surface nanobubbles have previously been found to exist on immersed substrates. Despite being known nucleation sites for cavitation, their collapsing dynamics are currently unexplored. Here, we use molecular dynamics simulations to model the shock-induced collapse of different surface nanobubble sizes and contact angles. Comparisons are made with additional collapsing spherical nanobubble simulations near a substrate, to investigate the differences in their jet formation and resulting substrate pitting damage. Our main finding is that the pitting damage in the surface nanobubble simulations is greatly reduced, when compared to the spherical nanobubbles, which is primarily caused by the weaker jets formed during their collapse. Furthermore, the pit depths for surface nanobubble collapse do not depend on bubble size, unlike in the spherical nanobubble cases, but instead depend only on their contact angle. We also find a linear scaling relationship for all bubble cases between the final substrate damage and the peak pressure impulse at the impact centre, which can now be exploited to assess the relative damage in other computational studies of collapsing bubbles. We anticipate the more controlled surface-damage features produced by surface nanobubble cavitation jets will open up new applications in advanced manufacturing, medicine, and precision cleaning.
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Affiliation(s)
- Duncan Dockar
- School of Engineering, Institute of Multiscale Thermofluids, The University of Edinburgh, Edinburgh EH9 3FB, UK.
| | - Livio Gibelli
- School of Engineering, Institute of Multiscale Thermofluids, The University of Edinburgh, Edinburgh EH9 3FB, UK.
| | - Matthew K Borg
- School of Engineering, Institute of Multiscale Thermofluids, The University of Edinburgh, Edinburgh EH9 3FB, UK.
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14
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Bashkatov A, Yang X, Mutschke G, Fritzsche B, Hossain SS, Eckert K. Dynamics of single hydrogen bubbles at Pt microelectrodes in microgravity. Phys Chem Chem Phys 2021; 23:11818-11830. [PMID: 33988200 DOI: 10.1039/d1cp00978h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The dynamics of single hydrogen bubbles electrogenerated in acidic electrolytes at a Pt microelectrode under potentiostatic conditions is investigated in microgravity during parabolic flights. Three bubble evolution scenarios have been identified depending on the electric potential applied and the acid concentration. The dominant scenario, characterized by lateral detachment of the grown bubble, is studied in detail. For that purpose, the evolution of the bubble radius, electric current and bubble trajectories, as well as the bubble lifetime are comprehensively addressed for different potentials and electrolyte concentrations. We focus particularly on analyzing bubble-bubble coalescence events which are responsible for reversals of the direction of bubble motion. Finally, as parabolic flights also permit hypergravity conditions, a detailed comparison of the characteristic bubble phenomena at various levels of gravity is drawn.
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Affiliation(s)
- Aleksandr Bashkatov
- Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328, Germany.
| | - Xuegeng Yang
- Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328, Germany.
| | - Gerd Mutschke
- Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328, Germany.
| | - Barbara Fritzsche
- Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328, Germany. and Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, Dresden, 01062, Germany.
| | - Syed Sahil Hossain
- Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328, Germany.
| | - Kerstin Eckert
- Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, Dresden, 01328, Germany. and Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, Dresden, 01062, Germany.
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15
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Caparco AA, Wang M, Das A, Bommarius AS, Champion JA. Tuning the Morphology of Protein-Inorganic Calcium-Phosphate Supraparticles via Directed Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15296-15308. [PMID: 33301323 DOI: 10.1021/acs.langmuir.0c02735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Understanding the phenomena that govern complex interfacial and directed assemblies is essential for both control and scale-up of particle syntheses. The present work describes an effort to understand, control, and tune the formation of protein-inorganic calcium-phosphate supraparticles that are produced at an oscillating air-water interface created by end-over-end rotation of the synthesis solution. Supraparticles were synthesized under an array of different conditions that varied reagent concentration, the presence of additives, tube size, and rotational speed. Paired with a fluid mechanics model of the end-over-end rotation and dimensional analysis, the sensitivity of the synthesis to physicochemical and mechanical parameters was determined. Surface tension and bubble formation were found to be important criteria for changing the size distribution of supraparticles. Thresholds for the values of the Froude, Iribarren, and rotational Reynolds numbers were identified for narrowing particle size distribution. These results both guide the specific protein-inorganic supraparticle synthesis described here and inform future manipulation and scale-up of other complex interfacial colloidal assemblies.
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Affiliation(s)
- Adam A Caparco
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Melanee Wang
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Ankita Das
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Andreas S Bommarius
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Julie A Champion
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
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16
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Tang L, Dong S, Arnold R, La Plante EC, Vega-Vila JC, Prentice D, Ellison K, Kumar A, Neithalath N, Simonetti D, Sant G, Bauchy M. Atomic Dislocations and Bond Rupture Govern Dissolution Enhancement under Acoustic Stimulation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:55399-55410. [PMID: 33258375 DOI: 10.1021/acsami.0c16424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
By focusing the power of sound, acoustic stimulation (i.e., often referred to as sonication) enables numerous "green chemistry" pathways to enhance chemical reaction rates, for instance, of mineral dissolution in aqueous environments. However, a clear understanding of the atomistic mechanism(s) by which acoustic stimulation promotes mineral dissolution remains unclear. Herein, by combining nanoscale observations of dissolving surface topographies using vertical scanning interferometry, quantifications of mineral dissolution rates via analysis of solution compositions using inductively coupled plasma optical emission spectrometry, and classical molecular dynamics simulations, we reveal how acoustic stimulation induces dissolution enhancement. Across a wide range of minerals (Mohs hardness ranging from 3 to 7, surface energy ranging from 0.3 to 7.3 J/m2, and stacking fault energy ranging from 0.8 to 10.0 J/m2), we show that acoustic fields enhance mineral dissolution rates (reactivity) by inducing atomic dislocations and/or atomic bond rupture. The relative contributions of these mechanisms depend on the mineral's underlying mechanical properties. Based on this new understanding, we create a unifying model that comprehensively describes how cavitation and acoustic stimulation processes affect mineral dissolution rates.
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Affiliation(s)
- Longwen Tang
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
| | - Shiqi Dong
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
| | - Ross Arnold
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
| | - Erika Callagon La Plante
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Juan Carlos Vega-Vila
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Dale Prentice
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
| | - Kirk Ellison
- Electric Power Research Institute (EPRI), Charlotte, North Carolina 28262-8550, United States
| | - Aditya Kumar
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Narayanan Neithalath
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85281, United States
| | - Dante Simonetti
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials (LC2), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
- California Nanosystems Institute (CNSI), University of California, Los Angeles, California 90095, United States
| | - Mathieu Bauchy
- Physics of AmoRphous and Inorganic Solids Laboratory (PARISlab), Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
- Institute for Carbon Management (ICM), University of California, Los Angeles, California 90095, United States
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17
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Orthaber U, Zevnik J, Petkovšek R, Dular M. Cavitation bubble collapse in a vicinity of a liquid-liquid interface - Basic research into emulsification process. ULTRASONICS SONOCHEMISTRY 2020; 68:105224. [PMID: 32554294 DOI: 10.1016/j.ultsonch.2020.105224] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/18/2020] [Accepted: 06/08/2020] [Indexed: 05/09/2023]
Abstract
The initial motivation for the study was to gain deeper understanding into the background of emulsion preparation by ultrasound (cavitation). In our previous work (Perdih et al., 2019) we observed rich phenomena occurring near the liquid-liquid interface which was exposed to ultrasonic cavitation. Although numerous studies of bubble dynamics in different environments (presence of free surface, solid body, shear flow and even variable gravity field) exist, one can find almost no reports on the interaction of a bubble with a liquid-liquid interface. In the present work we conducted a number of experiments where single cavitation bubble dynamics was observed on each side of the oil-water interface. These were accompanied by corresponding simulations. We investigated the details of bubble interface interaction (deformation, penetration). As predicted, by the anisotropy parameter the bubble always jets toward the interface if it grows in the lighter liquid and correspondingly away from the interface if it is initiated inside the denser liquid. We extended the analysis to the relationships of various bubble characteristics and the anisotropy parameter. Finally, based on the present and our previous study (Perdih et al., 2019), we offer new insights into the physics of ultrasonic emulsification process.
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Affiliation(s)
- Uroš Orthaber
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, SI, Slovenia
| | - Jure Zevnik
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, SI, Slovenia
| | - Rok Petkovšek
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, SI, Slovenia
| | - Matevž Dular
- Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, SI, Slovenia.
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18
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Cleve S, Inserra C, Prentice P. Contrast Agent Microbubble Jetting during Initial Interaction with 200-kHz Focused Ultrasound. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:3075-3080. [PMID: 31477370 PMCID: PMC6863384 DOI: 10.1016/j.ultrasmedbio.2019.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/31/2019] [Accepted: 08/01/2019] [Indexed: 05/22/2023]
Abstract
The initial response of microbubbles flowing through a 500-μm polycarbonate capillary to a burst of 200-kHz focused ultrasound, at peak-negative pressure amplitudes from 0.7-1.5 MPa, was investigated with dual-perspective high-speed imaging. Directed jetting through the acoustic focus is demonstrated according to the pressure gradients acting across the cavitating microbubbles. At lower amplitudes, repeated microbubble-jetting is accompanied by sudden, intermittent translation. At higher amplitudes a rebound jet also forms, before disintegration into a cavitation cloud.
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Affiliation(s)
- Sarah Cleve
- Université Lyon, École Centrale de Lyon, INSA de Lyon, CNRS, LMFA UMR 5509, Écully, France
| | - Claude Inserra
- Université Lyon 1, Centre Léon Bérard, INSERM, LabTAU, Lyon, France
| | - Paul Prentice
- CavLab, Centre for Medical and Industrial Ultrasonics, University of Glasgow, Glasgow, United Kingdom.
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19
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Wang LL, Chen L, Zhang J, Duan JM, Wang L, Silber-Li ZH, Zheng X, Cui HH. Efficient Propulsion and Hovering of Bubble-Driven Hollow Micromotors underneath an Air-Liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10426-10433. [PMID: 30091934 DOI: 10.1021/acs.langmuir.8b02249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bubble-driven micromotors have attracted substantial interest due to their remarkable self-motile and cargo-delivering abilities in biomedical or environmental applications. Here, we developed a hollow micromotor that experiences fast self-propulsion underneath an air-liquid interface by periodic bubble growth and collapse. The collapsing of a single microbubble induces a ∼1 m·s-1 impulsive jetting flow that instantaneously pushes the micromotor forward. Unlike previously reported micromotors propelled by the recoiling of bubbles, cavitation-induced jetting further utilizes the energy stored in the bubble to propel the micromotor and thus enhances the energy conversion efficiency by 3 orders of magnitude. Four different modes of propulsion are, for the first time, identified by quantifying the dependence of propulsion strength on microbubble size. Meanwhile, the vertical component of the jetting flow counteracts the buoyancy of the micromotor-bubble dimer and facilitates counterintuitive hovering underneath the air-liquid interface. This work not only enriches the understanding of the propulsion mechanism of bubble-driven micromotors but also gives insight into the physical aspects of cavitation bubble dynamics near the air-liquid interface on the microscale.
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Affiliation(s)
- Lei-Lei Wang
- School of Environment and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
| | - Li Chen
- School of Environment and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
| | - Jing Zhang
- School of Environment and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
| | - Jin-Ming Duan
- School of Environment and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
| | - Lei Wang
- School of Environment and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
| | - Zhan-Hua Silber-Li
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics , Chinese Academy of Science , Beijing 100190 , China
| | - Xu Zheng
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics , Chinese Academy of Science , Beijing 100190 , China
| | - Hai-Hang Cui
- School of Environment and Municipal Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
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20
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Wang M, Zhou Y. Numerical investigation of the inertial cavitation threshold by dual-frequency excitation in the fluid and tissue. ULTRASONICS SONOCHEMISTRY 2018; 42:327-338. [PMID: 29429677 DOI: 10.1016/j.ultsonch.2017.11.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/18/2017] [Accepted: 11/29/2017] [Indexed: 06/08/2023]
Abstract
Inertial cavitation thresholds, which are defined as bubble growth by 2-fold from the equilibrium radius, by two types of ultrasonic excitation (at the classical single-frequency mode and dual-frequency mode) were calculated. The effect of the dual-frequency excitation on the inertial cavitation threshold in the different surrounding media (fluid and tissue) was studied, and the paramount parameters (driving frequency, amplitude ratio, phase difference, and frequency ratio) were also optimized to maximize the inertial cavitation. The numerical prediction confirms the previous experimental results that the dual-frequency excitation is capable of reducing the inertial cavitation threshold in comparison to the single-frequency one at the same output power. The dual-frequency excitation at the high frequency (i.e., 3.1 + 3.5 MHz vs. 1.1 + 1.3 MHz) is preferred in this study. The simulation results suggest that the same amplitudes of individual components, zero phase difference, and large frequency difference are beneficial for enhancing the bubble cavitation. Overall, this work may provide a theoretical model for further investigation of dual-frequency excitation and guidance of its applications for a better outcome.
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Affiliation(s)
- Mingjun Wang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave., 639798, Singapore; Motor Group, R&D, ASM Pacific Technology Ltd, 3/F, Watson Centre, 16-22 Kung Yip St, Kwai Chung, Hong Kong, PR China.
| | - Yufeng Zhou
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave., 639798, Singapore
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21
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Macoskey JJ, Zhang X, Hall TL, Shi J, Beig SA, Johnsen E, Lee FT, Cain CA, Xu Z. Bubble-Induced Color Doppler Feedback Correlates with Histotripsy-Induced Destruction of Structural Components in Liver Tissue. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:602-612. [PMID: 29329687 PMCID: PMC5801099 DOI: 10.1016/j.ultrasmedbio.2017.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/09/2017] [Accepted: 11/20/2017] [Indexed: 06/01/2023]
Abstract
Bubble-induced color Doppler (BCD) is a histotripsy-therapy monitoring technique that uses Doppler ultrasound to track the motion of residual cavitation nuclei that persist after the collapse of the histotripsy bubble cloud. In this study, BCD is used to monitor tissue fractionation during histotripsy tissue therapy, and the BCD signal is correlated with the destruction of structural and non-structural components identified histologically to further understand how BCD monitors the extent of treatment. A 500-kHz, 112-element phased histotripsy array is used to generate approximately 6- × 6- × 7-mm lesions within ex vivo bovine liver tissue by scanning more than 219 locations with 30-1000 pulses per location. A 128-element L7-4 imaging probe is used to acquire BCD signals during all treatments. The BCD signal is then quantitatively analyzed using the time-to-peak rebound velocity (tprv) metric. Using the Pearson correlation coefficient, the tprv is compared with histologic analytics of lesions generated by various numbers of pulses using a significance level of 0.001. Histologic analytics in this study include viable cell count, reticulin-stained type III collagen area and trichrome-stained type I collagen area. It is found that the tprv metric has a statistically significant correlation with the change in reticulin-stained type III collagen area with a Pearson correlation coefficient of -0.94 (p <0.001), indicating that changes in BCD are more likely because of destruction of the structural components of tissue.
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Affiliation(s)
- Jonathan J Macoskey
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.
| | - Xi Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Timothy L Hall
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jiaqi Shi
- Department of Pathology, University of Michigan, Ann Arbor, MI, USA
| | | | - Eric Johnsen
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Fred T Lee
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Charles A Cain
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Department of Electrical Engineering & Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - Zhen Xu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
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22
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Zhang J, Zheng X, Cui H, Silber-Li Z. The Self-Propulsion of the Spherical Pt–SiO2 Janus Micro-Motor. MICROMACHINES 2017. [PMCID: PMC6189969 DOI: 10.3390/mi8040123] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The double-faced Janus micro-motor, which utilizes the heterogeneity between its two hemispheres to generate self-propulsion, has shown great potential in water cleaning, drug delivery in micro/nanofluidics, and provision of power for a novel micro-robot. In this paper, we focus on the self-propulsion of a platinum–silica (Pt–SiO2) spherical Janus micro-motor (JM), which is one of the simplest micro-motors, suspended in a hydrogen peroxide solution (H2O2). Due to the catalytic decomposition of H2O2 on the Pt side, the JM is propelled by the established concentration gradient known as diffusoiphoretic motion. Furthermore, as the JM size increases to O (10 μm), oxygen molecules nucleate on the Pt surface, forming microbubbles. In this case, a fast bubble propulsion is realized by the microbubble cavitation-induced jet flow. We systematically review the results of the above two distinct mechanisms: self-diffusiophoresis and microbubble propulsion. Their typical behaviors are demonstrated, based mainly on experimental observations. The theoretical description and the numerical approach are also introduced. We show that this tiny motor, though it has a very simple structure, relies on sophisticated physical principles and can be used to fulfill many novel functions.
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Affiliation(s)
- Jing Zhang
- School of Environment and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; (J.Z.); (H.C.)
| | - Xu Zheng
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
- Correspondence: ; Tel.: +86-10-8254-3925
| | - Haihang Cui
- School of Environment and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; (J.Z.); (H.C.)
| | - Zhanhua Silber-Li
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
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23
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Affiliation(s)
- Shengcai Li
- School of Engineering, Warwick University, Coventry, UK
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